Squashed 'waflib/' content from commit 6e726eb

git-subtree-dir: waflib
git-subtree-split: 6e726eb11d3e21be410549d27dd1aa94678f3d09

182 files changed, 41465 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8d35cb3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__
+*.pyc
diff --git a/Build.py b/Build.py
new file mode 100644
index 0000000..1afcba6
--- /dev/null
+++ b/Build.py
@@ -0,0 +1,1491 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Classes related to the build phase (build, clean, install, step, etc)
+
+The inheritance tree is the following:
+
+"""
+
+import os, sys, errno, re, shutil, stat
+try:
+	import cPickle
+except ImportError:
+	import pickle as cPickle
+from waflib import Node, Runner, TaskGen, Utils, ConfigSet, Task, Logs, Options, Context, Errors
+
+CACHE_DIR = 'c4che'
+"""Name of the cache directory"""
+
+CACHE_SUFFIX = '_cache.py'
+"""ConfigSet cache files for variants are written under :py:attr:´waflib.Build.CACHE_DIR´ in the form ´variant_name´_cache.py"""
+
+INSTALL = 1337
+"""Positive value '->' install, see :py:attr:`waflib.Build.BuildContext.is_install`"""
+
+UNINSTALL = -1337
+"""Negative value '<-' uninstall, see :py:attr:`waflib.Build.BuildContext.is_install`"""
+
+SAVED_ATTRS = 'root node_sigs task_sigs imp_sigs raw_deps node_deps'.split()
+"""Build class members to save between the runs; these should be all dicts
+except for `root` which represents a :py:class:`waflib.Node.Node` instance
+"""
+
+CFG_FILES = 'cfg_files'
+"""Files from the build directory to hash before starting the build (``config.h`` written during the configuration)"""
+
+POST_AT_ONCE = 0
+"""Post mode: all task generators are posted before any task executed"""
+
+POST_LAZY = 1
+"""Post mode: post the task generators group after group, the tasks in the next group are created when the tasks in the previous groups are done"""
+
+PROTOCOL = -1
+if sys.platform == 'cli':
+	PROTOCOL = 0
+
+class BuildContext(Context.Context):
+	'''executes the build'''
+
+	cmd = 'build'
+	variant = ''
+
+	def __init__(self, **kw):
+		super(BuildContext, self).__init__(**kw)
+
+		self.is_install = 0
+		"""Non-zero value when installing or uninstalling file"""
+
+		self.top_dir = kw.get('top_dir', Context.top_dir)
+		"""See :py:attr:`waflib.Context.top_dir`; prefer :py:attr:`waflib.Build.BuildContext.srcnode`"""
+
+		self.out_dir = kw.get('out_dir', Context.out_dir)
+		"""See :py:attr:`waflib.Context.out_dir`; prefer :py:attr:`waflib.Build.BuildContext.bldnode`"""
+
+		self.run_dir = kw.get('run_dir', Context.run_dir)
+		"""See :py:attr:`waflib.Context.run_dir`"""
+
+		self.launch_dir = Context.launch_dir
+		"""See :py:attr:`waflib.Context.out_dir`; prefer :py:meth:`waflib.Build.BuildContext.launch_node`"""
+
+		self.post_mode = POST_LAZY
+		"""Whether to post the task generators at once or group-by-group (default is group-by-group)"""
+
+		self.cache_dir = kw.get('cache_dir')
+		if not self.cache_dir:
+			self.cache_dir = os.path.join(self.out_dir, CACHE_DIR)
+
+		self.all_envs = {}
+		"""Map names to :py:class:`waflib.ConfigSet.ConfigSet`, the empty string must map to the default environment"""
+
+		# ======================================= #
+		# cache variables
+
+		self.node_sigs = {}
+		"""Dict mapping build nodes to task identifier (uid), it indicates whether a task created a particular file (persists across builds)"""
+
+		self.task_sigs = {}
+		"""Dict mapping task identifiers (uid) to task signatures (persists across builds)"""
+
+		self.imp_sigs = {}
+		"""Dict mapping task identifiers (uid) to implicit task dependencies used for scanning targets (persists across builds)"""
+
+		self.node_deps = {}
+		"""Dict mapping task identifiers (uid) to node dependencies found by :py:meth:`waflib.Task.Task.scan` (persists across builds)"""
+
+		self.raw_deps = {}
+		"""Dict mapping task identifiers (uid) to custom data returned by :py:meth:`waflib.Task.Task.scan` (persists across builds)"""
+
+		self.task_gen_cache_names = {}
+
+		self.jobs = Options.options.jobs
+		"""Amount of jobs to run in parallel"""
+
+		self.targets = Options.options.targets
+		"""List of targets to build (default: \*)"""
+
+		self.keep = Options.options.keep
+		"""Whether the build should continue past errors"""
+
+		self.progress_bar = Options.options.progress_bar
+		"""
+		Level of progress status:
+
+		0. normal output
+		1. progress bar
+		2. IDE output
+		3. No output at all
+		"""
+
+		# Manual dependencies.
+		self.deps_man = Utils.defaultdict(list)
+		"""Manual dependencies set by :py:meth:`waflib.Build.BuildContext.add_manual_dependency`"""
+
+		# just the structure here
+		self.current_group = 0
+		"""
+		Current build group
+		"""
+
+		self.groups = []
+		"""
+		List containing lists of task generators
+		"""
+
+		self.group_names = {}
+		"""
+		Map group names to the group lists. See :py:meth:`waflib.Build.BuildContext.add_group`
+		"""
+
+		for v in SAVED_ATTRS:
+			if not hasattr(self, v):
+				setattr(self, v, {})
+
+	def get_variant_dir(self):
+		"""Getter for the variant_dir attribute"""
+		if not self.variant:
+			return self.out_dir
+		return os.path.join(self.out_dir, os.path.normpath(self.variant))
+	variant_dir = property(get_variant_dir, None)
+
+	def __call__(self, *k, **kw):
+		"""
+		Create a task generator and add it to the current build group. The following forms are equivalent::
+
+			def build(bld):
+				tg = bld(a=1, b=2)
+
+			def build(bld):
+				tg = bld()
+				tg.a = 1
+				tg.b = 2
+
+			def build(bld):
+				tg = TaskGen.task_gen(a=1, b=2)
+				bld.add_to_group(tg, None)
+
+		:param group: group name to add the task generator to
+		:type group: string
+		"""
+		kw['bld'] = self
+		ret = TaskGen.task_gen(*k, **kw)
+		self.task_gen_cache_names = {} # reset the cache, each time
+		self.add_to_group(ret, group=kw.get('group'))
+		return ret
+
+	def __copy__(self):
+		"""
+		Build contexts cannot be copied
+
+		:raises: :py:class:`waflib.Errors.WafError`
+		"""
+		raise Errors.WafError('build contexts cannot be copied')
+
+	def load_envs(self):
+		"""
+		The configuration command creates files of the form ``build/c4che/NAMEcache.py``. This method
+		creates a :py:class:`waflib.ConfigSet.ConfigSet` instance for each ``NAME`` by reading those
+		files and stores them in :py:attr:`waflib.Build.BuildContext.allenvs`.
+		"""
+		node = self.root.find_node(self.cache_dir)
+		if not node:
+			raise Errors.WafError('The project was not configured: run "waf configure" first!')
+		lst = node.ant_glob('**/*%s' % CACHE_SUFFIX, quiet=True)
+
+		if not lst:
+			raise Errors.WafError('The cache directory is empty: reconfigure the project')
+
+		for x in lst:
+			name = x.path_from(node).replace(CACHE_SUFFIX, '').replace('\\', '/')
+			env = ConfigSet.ConfigSet(x.abspath())
+			self.all_envs[name] = env
+			for f in env[CFG_FILES]:
+				newnode = self.root.find_resource(f)
+				if not newnode or not newnode.exists():
+					raise Errors.WafError('Missing configuration file %r, reconfigure the project!' % f)
+
+	def init_dirs(self):
+		"""
+		Initialize the project directory and the build directory by creating the nodes
+		:py:attr:`waflib.Build.BuildContext.srcnode` and :py:attr:`waflib.Build.BuildContext.bldnode`
+		corresponding to ``top_dir`` and ``variant_dir`` respectively. The ``bldnode`` directory is
+		created if necessary.
+		"""
+		if not (os.path.isabs(self.top_dir) and os.path.isabs(self.out_dir)):
+			raise Errors.WafError('The project was not configured: run "waf configure" first!')
+
+		self.path = self.srcnode = self.root.find_dir(self.top_dir)
+		self.bldnode = self.root.make_node(self.variant_dir)
+		self.bldnode.mkdir()
+
+	def execute(self):
+		"""
+		Restore data from previous builds and call :py:meth:`waflib.Build.BuildContext.execute_build`.
+		Overrides from :py:func:`waflib.Context.Context.execute`
+		"""
+		self.restore()
+		if not self.all_envs:
+			self.load_envs()
+		self.execute_build()
+
+	def execute_build(self):
+		"""
+		Execute the build by:
+
+		* reading the scripts (see :py:meth:`waflib.Context.Context.recurse`)
+		* calling :py:meth:`waflib.Build.BuildContext.pre_build` to call user build functions
+		* calling :py:meth:`waflib.Build.BuildContext.compile` to process the tasks
+		* calling :py:meth:`waflib.Build.BuildContext.post_build` to call user build functions
+		"""
+
+		Logs.info("Waf: Entering directory `%s'", self.variant_dir)
+		self.recurse([self.run_dir])
+		self.pre_build()
+
+		# display the time elapsed in the progress bar
+		self.timer = Utils.Timer()
+
+		try:
+			self.compile()
+		finally:
+			if self.progress_bar == 1 and sys.stderr.isatty():
+				c = self.producer.processed or 1
+				m = self.progress_line(c, c, Logs.colors.BLUE, Logs.colors.NORMAL)
+				Logs.info(m, extra={'stream': sys.stderr, 'c1': Logs.colors.cursor_off, 'c2' : Logs.colors.cursor_on})
+			Logs.info("Waf: Leaving directory `%s'", self.variant_dir)
+		try:
+			self.producer.bld = None
+			del self.producer
+		except AttributeError:
+			pass
+		self.post_build()
+
+	def restore(self):
+		"""
+		Load data from a previous run, sets the attributes listed in :py:const:`waflib.Build.SAVED_ATTRS`
+		"""
+		try:
+			env = ConfigSet.ConfigSet(os.path.join(self.cache_dir, 'build.config.py'))
+		except EnvironmentError:
+			pass
+		else:
+			if env.version < Context.HEXVERSION:
+				raise Errors.WafError('Project was configured with a different version of Waf, please reconfigure it')
+
+			for t in env.tools:
+				self.setup(**t)
+
+		dbfn = os.path.join(self.variant_dir, Context.DBFILE)
+		try:
+			data = Utils.readf(dbfn, 'rb')
+		except (EnvironmentError, EOFError):
+			# handle missing file/empty file
+			Logs.debug('build: Could not load the build cache %s (missing)', dbfn)
+		else:
+			try:
+				Node.pickle_lock.acquire()
+				Node.Nod3 = self.node_class
+				try:
+					data = cPickle.loads(data)
+				except Exception as e:
+					Logs.debug('build: Could not pickle the build cache %s: %r', dbfn, e)
+				else:
+					for x in SAVED_ATTRS:
+						setattr(self, x, data.get(x, {}))
+			finally:
+				Node.pickle_lock.release()
+
+		self.init_dirs()
+
+	def store(self):
+		"""
+		Store data for next runs, set the attributes listed in :py:const:`waflib.Build.SAVED_ATTRS`. Uses a temporary
+		file to avoid problems on ctrl+c.
+		"""
+		data = {}
+		for x in SAVED_ATTRS:
+			data[x] = getattr(self, x)
+		db = os.path.join(self.variant_dir, Context.DBFILE)
+
+		try:
+			Node.pickle_lock.acquire()
+			Node.Nod3 = self.node_class
+			x = cPickle.dumps(data, PROTOCOL)
+		finally:
+			Node.pickle_lock.release()
+
+		Utils.writef(db + '.tmp', x, m='wb')
+
+		try:
+			st = os.stat(db)
+			os.remove(db)
+			if not Utils.is_win32: # win32 has no chown but we're paranoid
+				os.chown(db + '.tmp', st.st_uid, st.st_gid)
+		except (AttributeError, OSError):
+			pass
+
+		# do not use shutil.move (copy is not thread-safe)
+		os.rename(db + '.tmp', db)
+
+	def compile(self):
+		"""
+		Run the build by creating an instance of :py:class:`waflib.Runner.Parallel`
+		The cache file is written when at least a task was executed.
+
+		:raises: :py:class:`waflib.Errors.BuildError` in case the build fails
+		"""
+		Logs.debug('build: compile()')
+
+		# delegate the producer-consumer logic to another object to reduce the complexity
+		self.producer = Runner.Parallel(self, self.jobs)
+		self.producer.biter = self.get_build_iterator()
+		try:
+			self.producer.start()
+		except KeyboardInterrupt:
+			if self.is_dirty():
+				self.store()
+			raise
+		else:
+			if self.is_dirty():
+				self.store()
+
+		if self.producer.error:
+			raise Errors.BuildError(self.producer.error)
+
+	def is_dirty(self):
+		return self.producer.dirty
+
+	def setup(self, tool, tooldir=None, funs=None):
+		"""
+		Import waf tools defined during the configuration::
+
+			def configure(conf):
+				conf.load('glib2')
+
+			def build(bld):
+				pass # glib2 is imported implicitly
+
+		:param tool: tool list
+		:type tool: list
+		:param tooldir: optional tool directory (sys.path)
+		:type tooldir: list of string
+		:param funs: unused variable
+		"""
+		if isinstance(tool, list):
+			for i in tool:
+				self.setup(i, tooldir)
+			return
+
+		module = Context.load_tool(tool, tooldir)
+		if hasattr(module, "setup"):
+			module.setup(self)
+
+	def get_env(self):
+		"""Getter for the env property"""
+		try:
+			return self.all_envs[self.variant]
+		except KeyError:
+			return self.all_envs['']
+	def set_env(self, val):
+		"""Setter for the env property"""
+		self.all_envs[self.variant] = val
+
+	env = property(get_env, set_env)
+
+	def add_manual_dependency(self, path, value):
+		"""
+		Adds a dependency from a node object to a value::
+
+			def build(bld):
+				bld.add_manual_dependency(
+					bld.path.find_resource('wscript'),
+					bld.root.find_resource('/etc/fstab'))
+
+		:param path: file path
+		:type path: string or :py:class:`waflib.Node.Node`
+		:param value: value to depend
+		:type value: :py:class:`waflib.Node.Node`, byte object, or function returning a byte object
+		"""
+		if not path:
+			raise ValueError('Invalid input path %r' % path)
+
+		if isinstance(path, Node.Node):
+			node = path
+		elif os.path.isabs(path):
+			node = self.root.find_resource(path)
+		else:
+			node = self.path.find_resource(path)
+		if not node:
+			raise ValueError('Could not find the path %r' % path)
+
+		if isinstance(value, list):
+			self.deps_man[node].extend(value)
+		else:
+			self.deps_man[node].append(value)
+
+	def launch_node(self):
+		"""Returns the launch directory as a :py:class:`waflib.Node.Node` object (cached)"""
+		try:
+			# private cache
+			return self.p_ln
+		except AttributeError:
+			self.p_ln = self.root.find_dir(self.launch_dir)
+			return self.p_ln
+
+	def hash_env_vars(self, env, vars_lst):
+		"""
+		Hashes configuration set variables::
+
+			def build(bld):
+				bld.hash_env_vars(bld.env, ['CXX', 'CC'])
+
+		This method uses an internal cache.
+
+		:param env: Configuration Set
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		:param vars_lst: list of variables
+		:type vars_list: list of string
+		"""
+
+		if not env.table:
+			env = env.parent
+			if not env:
+				return Utils.SIG_NIL
+
+		idx = str(id(env)) + str(vars_lst)
+		try:
+			cache = self.cache_env
+		except AttributeError:
+			cache = self.cache_env = {}
+		else:
+			try:
+				return self.cache_env[idx]
+			except KeyError:
+				pass
+
+		lst = [env[a] for a in vars_lst]
+		cache[idx] = ret = Utils.h_list(lst)
+		Logs.debug('envhash: %s %r', Utils.to_hex(ret), lst)
+		return ret
+
+	def get_tgen_by_name(self, name):
+		"""
+		Fetches a task generator by its name or its target attribute;
+		the name must be unique in a build::
+
+			def build(bld):
+				tg = bld(name='foo')
+				tg == bld.get_tgen_by_name('foo')
+
+		This method use a private internal cache.
+
+		:param name: Task generator name
+		:raises: :py:class:`waflib.Errors.WafError` in case there is no task genenerator by that name
+		"""
+		cache = self.task_gen_cache_names
+		if not cache:
+			# create the index lazily
+			for g in self.groups:
+				for tg in g:
+					try:
+						cache[tg.name] = tg
+					except AttributeError:
+						# raised if not a task generator, which should be uncommon
+						pass
+		try:
+			return cache[name]
+		except KeyError:
+			raise Errors.WafError('Could not find a task generator for the name %r' % name)
+
+	def progress_line(self, idx, total, col1, col2):
+		"""
+		Computes a progress bar line displayed when running ``waf -p``
+
+		:returns: progress bar line
+		:rtype: string
+		"""
+		if not sys.stderr.isatty():
+			return ''
+
+		n = len(str(total))
+
+		Utils.rot_idx += 1
+		ind = Utils.rot_chr[Utils.rot_idx % 4]
+
+		pc = (100. * idx)/total
+		fs = "[%%%dd/%%d][%%s%%2d%%%%%%s][%s][" % (n, ind)
+		left = fs % (idx, total, col1, pc, col2)
+		right = '][%s%s%s]' % (col1, self.timer, col2)
+
+		cols = Logs.get_term_cols() - len(left) - len(right) + 2*len(col1) + 2*len(col2)
+		if cols < 7:
+			cols = 7
+
+		ratio = ((cols * idx)//total) - 1
+
+		bar = ('='*ratio+'>').ljust(cols)
+		msg = Logs.indicator % (left, bar, right)
+
+		return msg
+
+	def declare_chain(self, *k, **kw):
+		"""
+		Wraps :py:func:`waflib.TaskGen.declare_chain` for convenience
+		"""
+		return TaskGen.declare_chain(*k, **kw)
+
+	def pre_build(self):
+		"""Executes user-defined methods before the build starts, see :py:meth:`waflib.Build.BuildContext.add_pre_fun`"""
+		for m in getattr(self, 'pre_funs', []):
+			m(self)
+
+	def post_build(self):
+		"""Executes user-defined methods after the build is successful, see :py:meth:`waflib.Build.BuildContext.add_post_fun`"""
+		for m in getattr(self, 'post_funs', []):
+			m(self)
+
+	def add_pre_fun(self, meth):
+		"""
+		Binds a callback method to execute after the scripts are read and before the build starts::
+
+			def mycallback(bld):
+				print("Hello, world!")
+
+			def build(bld):
+				bld.add_pre_fun(mycallback)
+		"""
+		try:
+			self.pre_funs.append(meth)
+		except AttributeError:
+			self.pre_funs = [meth]
+
+	def add_post_fun(self, meth):
+		"""
+		Binds a callback method to execute immediately after the build is successful::
+
+			def call_ldconfig(bld):
+				bld.exec_command('/sbin/ldconfig')
+
+			def build(bld):
+				if bld.cmd == 'install':
+					bld.add_pre_fun(call_ldconfig)
+		"""
+		try:
+			self.post_funs.append(meth)
+		except AttributeError:
+			self.post_funs = [meth]
+
+	def get_group(self, x):
+		"""
+		Returns the build group named `x`, or the current group if `x` is None
+
+		:param x: name or number or None
+		:type x: string, int or None
+		"""
+		if not self.groups:
+			self.add_group()
+		if x is None:
+			return self.groups[self.current_group]
+		if x in self.group_names:
+			return self.group_names[x]
+		return self.groups[x]
+
+	def add_to_group(self, tgen, group=None):
+		"""Adds a task or a task generator to the build; there is no attempt to remove it if it was already added."""
+		assert(isinstance(tgen, TaskGen.task_gen) or isinstance(tgen, Task.Task))
+		tgen.bld = self
+		self.get_group(group).append(tgen)
+
+	def get_group_name(self, g):
+		"""
+		Returns the name of the input build group
+
+		:param g: build group object or build group index
+		:type g: integer or list
+		:return: name
+		:rtype: string
+		"""
+		if not isinstance(g, list):
+			g = self.groups[g]
+		for x in self.group_names:
+			if id(self.group_names[x]) == id(g):
+				return x
+		return ''
+
+	def get_group_idx(self, tg):
+		"""
+		Returns the index of the group containing the task generator given as argument::
+
+			def build(bld):
+				tg = bld(name='nada')
+				0 == bld.get_group_idx(tg)
+
+		:param tg: Task generator object
+		:type tg: :py:class:`waflib.TaskGen.task_gen`
+		:rtype: int
+		"""
+		se = id(tg)
+		for i, tmp in enumerate(self.groups):
+			for t in tmp:
+				if id(t) == se:
+					return i
+		return None
+
+	def add_group(self, name=None, move=True):
+		"""
+		Adds a new group of tasks/task generators. By default the new group becomes
+		the default group for new task generators (make sure to create build groups in order).
+
+		:param name: name for this group
+		:type name: string
+		:param move: set this new group as default group (True by default)
+		:type move: bool
+		:raises: :py:class:`waflib.Errors.WafError` if a group by the name given already exists
+		"""
+		if name and name in self.group_names:
+			raise Errors.WafError('add_group: name %s already present', name)
+		g = []
+		self.group_names[name] = g
+		self.groups.append(g)
+		if move:
+			self.current_group = len(self.groups) - 1
+
+	def set_group(self, idx):
+		"""
+		Sets the build group at position idx as current so that newly added
+		task generators are added to this one by default::
+
+			def build(bld):
+				bld(rule='touch ${TGT}', target='foo.txt')
+				bld.add_group() # now the current group is 1
+				bld(rule='touch ${TGT}', target='bar.txt')
+				bld.set_group(0) # now the current group is 0
+				bld(rule='touch ${TGT}', target='truc.txt') # build truc.txt before bar.txt
+
+		:param idx: group name or group index
+		:type idx: string or int
+		"""
+		if isinstance(idx, str):
+			g = self.group_names[idx]
+			for i, tmp in enumerate(self.groups):
+				if id(g) == id(tmp):
+					self.current_group = i
+					break
+		else:
+			self.current_group = idx
+
+	def total(self):
+		"""
+		Approximate task count: this value may be inaccurate if task generators
+		are posted lazily (see :py:attr:`waflib.Build.BuildContext.post_mode`).
+		The value :py:attr:`waflib.Runner.Parallel.total` is updated during the task execution.
+
+		:rtype: int
+		"""
+		total = 0
+		for group in self.groups:
+			for tg in group:
+				try:
+					total += len(tg.tasks)
+				except AttributeError:
+					total += 1
+		return total
+
+	def get_targets(self):
+		"""
+		This method returns a pair containing the index of the last build group to post,
+		and the list of task generator objects corresponding to the target names.
+
+		This is used internally by :py:meth:`waflib.Build.BuildContext.get_build_iterator`
+		to perform partial builds::
+
+			$ waf --targets=myprogram,myshlib
+
+		:return: the minimum build group index, and list of task generators
+		:rtype: tuple
+		"""
+		to_post = []
+		min_grp = 0
+		for name in self.targets.split(','):
+			tg = self.get_tgen_by_name(name)
+			m = self.get_group_idx(tg)
+			if m > min_grp:
+				min_grp = m
+				to_post = [tg]
+			elif m == min_grp:
+				to_post.append(tg)
+		return (min_grp, to_post)
+
+	def get_all_task_gen(self):
+		"""
+		Returns a list of all task generators for troubleshooting purposes.
+		"""
+		lst = []
+		for g in self.groups:
+			lst.extend(g)
+		return lst
+
+	def post_group(self):
+		"""
+		Post task generators from the group indexed by self.current_group; used internally
+		by :py:meth:`waflib.Build.BuildContext.get_build_iterator`
+		"""
+		def tgpost(tg):
+			try:
+				f = tg.post
+			except AttributeError:
+				pass
+			else:
+				f()
+
+		if self.targets == '*':
+			for tg in self.groups[self.current_group]:
+				tgpost(tg)
+		elif self.targets:
+			if self.current_group < self._min_grp:
+				for tg in self.groups[self.current_group]:
+					tgpost(tg)
+			else:
+				for tg in self._exact_tg:
+					tg.post()
+		else:
+			ln = self.launch_node()
+			if ln.is_child_of(self.bldnode):
+				Logs.warn('Building from the build directory, forcing --targets=*')
+				ln = self.srcnode
+			elif not ln.is_child_of(self.srcnode):
+				Logs.warn('CWD %s is not under %s, forcing --targets=* (run distclean?)', ln.abspath(), self.srcnode.abspath())
+				ln = self.srcnode
+
+			def is_post(tg, ln):
+				try:
+					p = tg.path
+				except AttributeError:
+					pass
+				else:
+					if p.is_child_of(ln):
+						return True
+
+			def is_post_group():
+				for i, g in enumerate(self.groups):
+					if i > self.current_group:
+						for tg in g:
+							if is_post(tg, ln):
+								return True
+
+			if self.post_mode == POST_LAZY and ln != self.srcnode:
+				# partial folder builds require all targets from a previous build group
+				if is_post_group():
+					ln = self.srcnode
+
+			for tg in self.groups[self.current_group]:
+				if is_post(tg, ln):
+					tgpost(tg)
+
+	def get_tasks_group(self, idx):
+		"""
+		Returns all task instances for the build group at position idx,
+		used internally by :py:meth:`waflib.Build.BuildContext.get_build_iterator`
+
+		:rtype: list of :py:class:`waflib.Task.Task`
+		"""
+		tasks = []
+		for tg in self.groups[idx]:
+			try:
+				tasks.extend(tg.tasks)
+			except AttributeError: # not a task generator
+				tasks.append(tg)
+		return tasks
+
+	def get_build_iterator(self):
+		"""
+		Creates a Python generator object that returns lists of tasks that may be processed in parallel.
+
+		:return: tasks which can be executed immediately
+		:rtype: generator returning lists of :py:class:`waflib.Task.Task`
+		"""
+		if self.targets and self.targets != '*':
+			(self._min_grp, self._exact_tg) = self.get_targets()
+
+		if self.post_mode != POST_LAZY:
+			for self.current_group, _ in enumerate(self.groups):
+				self.post_group()
+
+		for self.current_group, _ in enumerate(self.groups):
+			# first post the task generators for the group
+			if self.post_mode != POST_AT_ONCE:
+				self.post_group()
+
+			# then extract the tasks
+			tasks = self.get_tasks_group(self.current_group)
+
+			# if the constraints are set properly (ext_in/ext_out, before/after)
+			# the call to set_file_constraints may be removed (can be a 15% penalty on no-op rebuilds)
+			# (but leave set_file_constraints for the installation step)
+			#
+			# if the tasks have only files, set_file_constraints is required but set_precedence_constraints is not necessary
+			#
+			Task.set_file_constraints(tasks)
+			Task.set_precedence_constraints(tasks)
+
+			self.cur_tasks = tasks
+			if tasks:
+				yield tasks
+
+		while 1:
+			# the build stops once there are no tasks to process
+			yield []
+
+	def install_files(self, dest, files, **kw):
+		"""
+		Creates a task generator to install files on the system::
+
+			def build(bld):
+				bld.install_files('${DATADIR}', self.path.find_resource('wscript'))
+
+		:param dest: path representing the destination directory
+		:type dest: :py:class:`waflib.Node.Node` or string (absolute path)
+		:param files: input files
+		:type files: list of strings or list of :py:class:`waflib.Node.Node`
+		:param env: configuration set to expand *dest*
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		:param relative_trick: preserve the folder hierarchy when installing whole folders
+		:type relative_trick: bool
+		:param cwd: parent node for searching srcfile, when srcfile is not an instance of :py:class:`waflib.Node.Node`
+		:type cwd: :py:class:`waflib.Node.Node`
+		:param postpone: execute the task immediately to perform the installation (False by default)
+		:type postpone: bool
+		"""
+		assert(dest)
+		tg = self(features='install_task', install_to=dest, install_from=files, **kw)
+		tg.dest = tg.install_to
+		tg.type = 'install_files'
+		if not kw.get('postpone', True):
+			tg.post()
+		return tg
+
+	def install_as(self, dest, srcfile, **kw):
+		"""
+		Creates a task generator to install a file on the system with a different name::
+
+			def build(bld):
+				bld.install_as('${PREFIX}/bin', 'myapp', chmod=Utils.O755)
+
+		:param dest: destination file
+		:type dest: :py:class:`waflib.Node.Node` or string (absolute path)
+		:param srcfile: input file
+		:type srcfile: string or :py:class:`waflib.Node.Node`
+		:param cwd: parent node for searching srcfile, when srcfile is not an instance of :py:class:`waflib.Node.Node`
+		:type cwd: :py:class:`waflib.Node.Node`
+		:param env: configuration set for performing substitutions in dest
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		:param postpone: execute the task immediately to perform the installation (False by default)
+		:type postpone: bool
+		"""
+		assert(dest)
+		tg = self(features='install_task', install_to=dest, install_from=srcfile, **kw)
+		tg.dest = tg.install_to
+		tg.type = 'install_as'
+		if not kw.get('postpone', True):
+			tg.post()
+		return tg
+
+	def symlink_as(self, dest, src, **kw):
+		"""
+		Creates a task generator to install a symlink::
+
+			def build(bld):
+				bld.symlink_as('${PREFIX}/lib/libfoo.so', 'libfoo.so.1.2.3')
+
+		:param dest: absolute path of the symlink
+		:type dest: :py:class:`waflib.Node.Node` or string (absolute path)
+		:param src: link contents, which is a relative or absolute path which may exist or not
+		:type src: string
+		:param env: configuration set for performing substitutions in dest
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		:param add: add the task created to a build group - set ``False`` only if the installation task is created after the build has started
+		:type add: bool
+		:param postpone: execute the task immediately to perform the installation
+		:type postpone: bool
+		:param relative_trick: make the symlink relative (default: ``False``)
+		:type relative_trick: bool
+		"""
+		assert(dest)
+		tg = self(features='install_task', install_to=dest, install_from=src, **kw)
+		tg.dest = tg.install_to
+		tg.type = 'symlink_as'
+		tg.link = src
+		# TODO if add: self.add_to_group(tsk)
+		if not kw.get('postpone', True):
+			tg.post()
+		return tg
+
+@TaskGen.feature('install_task')
+@TaskGen.before_method('process_rule', 'process_source')
+def process_install_task(self):
+	"""Creates the installation task for the current task generator; uses :py:func:`waflib.Build.add_install_task` internally."""
+	self.add_install_task(**self.__dict__)
+
+@TaskGen.taskgen_method
+def add_install_task(self, **kw):
+	"""
+	Creates the installation task for the current task generator, and executes it immediately if necessary
+
+	:returns: An installation task
+	:rtype: :py:class:`waflib.Build.inst`
+	"""
+	if not self.bld.is_install:
+		return
+	if not kw['install_to']:
+		return
+
+	if kw['type'] == 'symlink_as' and Utils.is_win32:
+		if kw.get('win32_install'):
+			kw['type'] = 'install_as'
+		else:
+			# just exit
+			return
+
+	tsk = self.install_task = self.create_task('inst')
+	tsk.chmod = kw.get('chmod', Utils.O644)
+	tsk.link = kw.get('link', '') or kw.get('install_from', '')
+	tsk.relative_trick = kw.get('relative_trick', False)
+	tsk.type = kw['type']
+	tsk.install_to = tsk.dest = kw['install_to']
+	tsk.install_from = kw['install_from']
+	tsk.relative_base = kw.get('cwd') or kw.get('relative_base', self.path)
+	tsk.install_user = kw.get('install_user')
+	tsk.install_group = kw.get('install_group')
+	tsk.init_files()
+	if not kw.get('postpone', True):
+		tsk.run_now()
+	return tsk
+
+@TaskGen.taskgen_method
+def add_install_files(self, **kw):
+	"""
+	Creates an installation task for files
+
+	:returns: An installation task
+	:rtype: :py:class:`waflib.Build.inst`
+	"""
+	kw['type'] = 'install_files'
+	return self.add_install_task(**kw)
+
+@TaskGen.taskgen_method
+def add_install_as(self, **kw):
+	"""
+	Creates an installation task for a single file
+
+	:returns: An installation task
+	:rtype: :py:class:`waflib.Build.inst`
+	"""
+	kw['type'] = 'install_as'
+	return self.add_install_task(**kw)
+
+@TaskGen.taskgen_method
+def add_symlink_as(self, **kw):
+	"""
+	Creates an installation task for a symbolic link
+
+	:returns: An installation task
+	:rtype: :py:class:`waflib.Build.inst`
+	"""
+	kw['type'] = 'symlink_as'
+	return self.add_install_task(**kw)
+
+class inst(Task.Task):
+	"""Task that installs files or symlinks; it is typically executed by :py:class:`waflib.Build.InstallContext` and :py:class:`waflib.Build.UnInstallContext`"""
+	def __str__(self):
+		"""Returns an empty string to disable the standard task display"""
+		return ''
+
+	def uid(self):
+		"""Returns a unique identifier for the task"""
+		lst = self.inputs + self.outputs + [self.link, self.generator.path.abspath()]
+		return Utils.h_list(lst)
+
+	def init_files(self):
+		"""
+		Initializes the task input and output nodes
+		"""
+		if self.type == 'symlink_as':
+			inputs = []
+		else:
+			inputs = self.generator.to_nodes(self.install_from)
+			if self.type == 'install_as':
+				assert len(inputs) == 1
+		self.set_inputs(inputs)
+
+		dest = self.get_install_path()
+		outputs = []
+		if self.type == 'symlink_as':
+			if self.relative_trick:
+				self.link = os.path.relpath(self.link, os.path.dirname(dest))
+			outputs.append(self.generator.bld.root.make_node(dest))
+		elif self.type == 'install_as':
+			outputs.append(self.generator.bld.root.make_node(dest))
+		else:
+			for y in inputs:
+				if self.relative_trick:
+					destfile = os.path.join(dest, y.path_from(self.relative_base))
+				else:
+					destfile = os.path.join(dest, y.name)
+				outputs.append(self.generator.bld.root.make_node(destfile))
+		self.set_outputs(outputs)
+
+	def runnable_status(self):
+		"""
+		Installation tasks are always executed, so this method returns either :py:const:`waflib.Task.ASK_LATER` or :py:const:`waflib.Task.RUN_ME`.
+		"""
+		ret = super(inst, self).runnable_status()
+		if ret == Task.SKIP_ME and self.generator.bld.is_install:
+			return Task.RUN_ME
+		return ret
+
+	def post_run(self):
+		"""
+		Disables any post-run operations
+		"""
+		pass
+
+	def get_install_path(self, destdir=True):
+		"""
+		Returns the destination path where files will be installed, pre-pending `destdir`.
+
+		:rtype: string
+		"""
+		if isinstance(self.install_to, Node.Node):
+			dest = self.install_to.abspath()
+		else:
+			dest = Utils.subst_vars(self.install_to, self.env)
+		if destdir and Options.options.destdir:
+			dest = os.path.join(Options.options.destdir, os.path.splitdrive(dest)[1].lstrip(os.sep))
+		return dest
+
+	def copy_fun(self, src, tgt):
+		"""
+		Copies a file from src to tgt, preserving permissions and trying to work
+		around path limitations on Windows platforms. On Unix-like platforms,
+		the owner/group of the target file may be set through install_user/install_group
+
+		:param src: absolute path
+		:type src: string
+		:param tgt: absolute path
+		:type tgt: string
+		"""
+		# override this if you want to strip executables
+		# kw['tsk'].source is the task that created the files in the build
+		if Utils.is_win32 and len(tgt) > 259 and not tgt.startswith('\\\\?\\'):
+			tgt = '\\\\?\\' + tgt
+		shutil.copy2(src, tgt)
+		self.fix_perms(tgt)
+
+	def rm_empty_dirs(self, tgt):
+		"""
+		Removes empty folders recursively when uninstalling.
+
+		:param tgt: absolute path
+		:type tgt: string
+		"""
+		while tgt:
+			tgt = os.path.dirname(tgt)
+			try:
+				os.rmdir(tgt)
+			except OSError:
+				break
+
+	def run(self):
+		"""
+		Performs file or symlink installation
+		"""
+		is_install = self.generator.bld.is_install
+		if not is_install: # unnecessary?
+			return
+
+		for x in self.outputs:
+			if is_install == INSTALL:
+				x.parent.mkdir()
+		if self.type == 'symlink_as':
+			fun = is_install == INSTALL and self.do_link or self.do_unlink
+			fun(self.link, self.outputs[0].abspath())
+		else:
+			fun = is_install == INSTALL and self.do_install or self.do_uninstall
+			launch_node = self.generator.bld.launch_node()
+			for x, y in zip(self.inputs, self.outputs):
+				fun(x.abspath(), y.abspath(), x.path_from(launch_node))
+
+	def run_now(self):
+		"""
+		Try executing the installation task right now
+
+		:raises: :py:class:`waflib.Errors.TaskNotReady`
+		"""
+		status = self.runnable_status()
+		if status not in (Task.RUN_ME, Task.SKIP_ME):
+			raise Errors.TaskNotReady('Could not process %r: status %r' % (self, status))
+		self.run()
+		self.hasrun = Task.SUCCESS
+
+	def do_install(self, src, tgt, lbl, **kw):
+		"""
+		Copies a file from src to tgt with given file permissions. The actual copy is only performed
+		if the source and target file sizes or timestamps differ. When the copy occurs,
+		the file is always first removed and then copied so as to prevent stale inodes.
+
+		:param src: file name as absolute path
+		:type src: string
+		:param tgt: file destination, as absolute path
+		:type tgt: string
+		:param lbl: file source description
+		:type lbl: string
+		:param chmod: installation mode
+		:type chmod: int
+		:raises: :py:class:`waflib.Errors.WafError` if the file cannot be written
+		"""
+		if not Options.options.force:
+			# check if the file is already there to avoid a copy
+			try:
+				st1 = os.stat(tgt)
+				st2 = os.stat(src)
+			except OSError:
+				pass
+			else:
+				# same size and identical timestamps -> make no copy
+				if st1.st_mtime + 2 >= st2.st_mtime and st1.st_size == st2.st_size:
+					if not self.generator.bld.progress_bar:
+						Logs.info('- install %s (from %s)', tgt, lbl)
+					return False
+
+		if not self.generator.bld.progress_bar:
+			Logs.info('+ install %s (from %s)', tgt, lbl)
+
+		# Give best attempt at making destination overwritable,
+		# like the 'install' utility used by 'make install' does.
+		try:
+			os.chmod(tgt, Utils.O644 | stat.S_IMODE(os.stat(tgt).st_mode))
+		except EnvironmentError:
+			pass
+
+		# following is for shared libs and stale inodes (-_-)
+		try:
+			os.remove(tgt)
+		except OSError:
+			pass
+
+		try:
+			self.copy_fun(src, tgt)
+		except EnvironmentError as e:
+			if not os.path.exists(src):
+				Logs.error('File %r does not exist', src)
+			elif not os.path.isfile(src):
+				Logs.error('Input %r is not a file', src)
+			raise Errors.WafError('Could not install the file %r' % tgt, e)
+
+	def fix_perms(self, tgt):
+		"""
+		Change the ownership of the file/folder/link pointed by the given path
+		This looks up for `install_user` or `install_group` attributes
+		on the task or on the task generator::
+
+			def build(bld):
+				bld.install_as('${PREFIX}/wscript',
+					'wscript',
+					install_user='nobody', install_group='nogroup')
+				bld.symlink_as('${PREFIX}/wscript_link',
+					Utils.subst_vars('${PREFIX}/wscript', bld.env),
+					install_user='nobody', install_group='nogroup')
+		"""
+		if not Utils.is_win32:
+			user = getattr(self, 'install_user', None) or getattr(self.generator, 'install_user', None)
+			group = getattr(self, 'install_group', None) or getattr(self.generator, 'install_group', None)
+			if user or group:
+				Utils.lchown(tgt, user or -1, group or -1)
+		if not os.path.islink(tgt):
+			os.chmod(tgt, self.chmod)
+
+	def do_link(self, src, tgt, **kw):
+		"""
+		Creates a symlink from tgt to src.
+
+		:param src: file name as absolute path
+		:type src: string
+		:param tgt: file destination, as absolute path
+		:type tgt: string
+		"""
+		if os.path.islink(tgt) and os.readlink(tgt) == src:
+			if not self.generator.bld.progress_bar:
+				Logs.info('- symlink %s (to %s)', tgt, src)
+		else:
+			try:
+				os.remove(tgt)
+			except OSError:
+				pass
+			if not self.generator.bld.progress_bar:
+				Logs.info('+ symlink %s (to %s)', tgt, src)
+			os.symlink(src, tgt)
+			self.fix_perms(tgt)
+
+	def do_uninstall(self, src, tgt, lbl, **kw):
+		"""
+		See :py:meth:`waflib.Build.inst.do_install`
+		"""
+		if not self.generator.bld.progress_bar:
+			Logs.info('- remove %s', tgt)
+
+		#self.uninstall.append(tgt)
+		try:
+			os.remove(tgt)
+		except OSError as e:
+			if e.errno != errno.ENOENT:
+				if not getattr(self, 'uninstall_error', None):
+					self.uninstall_error = True
+					Logs.warn('build: some files could not be uninstalled (retry with -vv to list them)')
+				if Logs.verbose > 1:
+					Logs.warn('Could not remove %s (error code %r)', e.filename, e.errno)
+		self.rm_empty_dirs(tgt)
+
+	def do_unlink(self, src, tgt, **kw):
+		"""
+		See :py:meth:`waflib.Build.inst.do_link`
+		"""
+		try:
+			if not self.generator.bld.progress_bar:
+				Logs.info('- remove %s', tgt)
+			os.remove(tgt)
+		except OSError:
+			pass
+		self.rm_empty_dirs(tgt)
+
+class InstallContext(BuildContext):
+	'''installs the targets on the system'''
+	cmd = 'install'
+
+	def __init__(self, **kw):
+		super(InstallContext, self).__init__(**kw)
+		self.is_install = INSTALL
+
+class UninstallContext(InstallContext):
+	'''removes the targets installed'''
+	cmd = 'uninstall'
+
+	def __init__(self, **kw):
+		super(UninstallContext, self).__init__(**kw)
+		self.is_install = UNINSTALL
+
+class CleanContext(BuildContext):
+	'''cleans the project'''
+	cmd = 'clean'
+	def execute(self):
+		"""
+		See :py:func:`waflib.Build.BuildContext.execute`.
+		"""
+		self.restore()
+		if not self.all_envs:
+			self.load_envs()
+
+		self.recurse([self.run_dir])
+		try:
+			self.clean()
+		finally:
+			self.store()
+
+	def clean(self):
+		"""
+		Remove most files from the build directory, and reset all caches.
+
+		Custom lists of files to clean can be declared as `bld.clean_files`.
+		For example, exclude `build/program/myprogram` from getting removed::
+
+			def build(bld):
+				bld.clean_files = bld.bldnode.ant_glob('**',
+					excl='.lock* config.log c4che/* config.h program/myprogram',
+					quiet=True, generator=True)
+		"""
+		Logs.debug('build: clean called')
+
+		if hasattr(self, 'clean_files'):
+			for n in self.clean_files:
+				n.delete()
+		elif self.bldnode != self.srcnode:
+			# would lead to a disaster if top == out
+			lst = []
+			for env in self.all_envs.values():
+				lst.extend(self.root.find_or_declare(f) for f in env[CFG_FILES])
+			for n in self.bldnode.ant_glob('**/*', excl='.lock* *conf_check_*/** config.log c4che/*', quiet=True):
+				if n in lst:
+					continue
+				n.delete()
+		self.root.children = {}
+
+		for v in SAVED_ATTRS:
+			if v == 'root':
+				continue
+			setattr(self, v, {})
+
+class ListContext(BuildContext):
+	'''lists the targets to execute'''
+	cmd = 'list'
+
+	def execute(self):
+		"""
+		In addition to printing the name of each build target,
+		a description column will include text for each task
+		generator which has a "description" field set.
+
+		See :py:func:`waflib.Build.BuildContext.execute`.
+		"""
+		self.restore()
+		if not self.all_envs:
+			self.load_envs()
+
+		self.recurse([self.run_dir])
+		self.pre_build()
+
+		# display the time elapsed in the progress bar
+		self.timer = Utils.Timer()
+
+		for g in self.groups:
+			for tg in g:
+				try:
+					f = tg.post
+				except AttributeError:
+					pass
+				else:
+					f()
+
+		try:
+			# force the cache initialization
+			self.get_tgen_by_name('')
+		except Errors.WafError:
+			pass
+
+		targets = sorted(self.task_gen_cache_names)
+
+		# figure out how much to left-justify, for largest target name
+		line_just = max(len(t) for t in targets) if targets else 0
+
+		for target in targets:
+			tgen = self.task_gen_cache_names[target]
+
+			# Support displaying the description for the target
+			# if it was set on the tgen
+			descript = getattr(tgen, 'description', '')
+			if descript:
+				target = target.ljust(line_just)
+				descript = ': %s' % descript
+
+			Logs.pprint('GREEN', target, label=descript)
+
+class StepContext(BuildContext):
+	'''executes tasks in a step-by-step fashion, for debugging'''
+	cmd = 'step'
+
+	def __init__(self, **kw):
+		super(StepContext, self).__init__(**kw)
+		self.files = Options.options.files
+
+	def compile(self):
+		"""
+		Overrides :py:meth:`waflib.Build.BuildContext.compile` to perform a partial build
+		on tasks matching the input/output pattern given (regular expression matching)::
+
+			$ waf step --files=foo.c,bar.c,in:truc.c,out:bar.o
+			$ waf step --files=in:foo.cpp.1.o # link task only
+
+		"""
+		if not self.files:
+			Logs.warn('Add a pattern for the debug build, for example "waf step --files=main.c,app"')
+			BuildContext.compile(self)
+			return
+
+		targets = []
+		if self.targets and self.targets != '*':
+			targets = self.targets.split(',')
+
+		for g in self.groups:
+			for tg in g:
+				if targets and tg.name not in targets:
+					continue
+
+				try:
+					f = tg.post
+				except AttributeError:
+					pass
+				else:
+					f()
+
+			for pat in self.files.split(','):
+				matcher = self.get_matcher(pat)
+				for tg in g:
+					if isinstance(tg, Task.Task):
+						lst = [tg]
+					else:
+						lst = tg.tasks
+					for tsk in lst:
+						do_exec = False
+						for node in tsk.inputs:
+							if matcher(node, output=False):
+								do_exec = True
+								break
+						for node in tsk.outputs:
+							if matcher(node, output=True):
+								do_exec = True
+								break
+						if do_exec:
+							ret = tsk.run()
+							Logs.info('%s -> exit %r', tsk, ret)
+
+	def get_matcher(self, pat):
+		"""
+		Converts a step pattern into a function
+
+		:param: pat: pattern of the form in:truc.c,out:bar.o
+		:returns: Python function that uses Node objects as inputs and returns matches
+		:rtype: function
+		"""
+		# this returns a function
+		inn = True
+		out = True
+		if pat.startswith('in:'):
+			out = False
+			pat = pat.replace('in:', '')
+		elif pat.startswith('out:'):
+			inn = False
+			pat = pat.replace('out:', '')
+
+		anode = self.root.find_node(pat)
+		pattern = None
+		if not anode:
+			if not pat.startswith('^'):
+				pat = '^.+?%s' % pat
+			if not pat.endswith('$'):
+				pat = '%s$' % pat
+			pattern = re.compile(pat)
+
+		def match(node, output):
+			if output and not out:
+				return False
+			if not output and not inn:
+				return False
+
+			if anode:
+				return anode == node
+			else:
+				return pattern.match(node.abspath())
+		return match
+
+class EnvContext(BuildContext):
+	"""Subclass EnvContext to create commands that require configuration data in 'env'"""
+	fun = cmd = None
+	def execute(self):
+		"""
+		See :py:func:`waflib.Build.BuildContext.execute`.
+		"""
+		self.restore()
+		if not self.all_envs:
+			self.load_envs()
+		self.recurse([self.run_dir])
+
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..a4147d2
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,25 @@
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
diff --git a/ConfigSet.py b/ConfigSet.py
new file mode 100644
index 0000000..b300bb5
--- /dev/null
+++ b/ConfigSet.py
@@ -0,0 +1,361 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+
+ConfigSet: a special dict
+
+The values put in :py:class:`ConfigSet` must be serializable (dicts, lists, strings)
+"""
+
+import copy, re, os
+from waflib import Logs, Utils
+re_imp = re.compile('^(#)*?([^#=]*?)\ =\ (.*?)$', re.M)
+
+class ConfigSet(object):
+	"""
+	A copy-on-write dict with human-readable serialized format. The serialization format
+	is human-readable (python-like) and performed by using eval() and repr().
+	For high performance prefer pickle. Do not store functions as they are not serializable.
+
+	The values can be accessed by attributes or by keys::
+
+		from waflib.ConfigSet import ConfigSet
+		env = ConfigSet()
+		env.FOO = 'test'
+		env['FOO'] = 'test'
+	"""
+	__slots__ = ('table', 'parent')
+	def __init__(self, filename=None):
+		self.table = {}
+		"""
+		Internal dict holding the object values
+		"""
+		#self.parent = None
+
+		if filename:
+			self.load(filename)
+
+	def __contains__(self, key):
+		"""
+		Enables the *in* syntax::
+
+			if 'foo' in env:
+				print(env['foo'])
+		"""
+		if key in self.table:
+			return True
+		try:
+			return self.parent.__contains__(key)
+		except AttributeError:
+			return False # parent may not exist
+
+	def keys(self):
+		"""Dict interface"""
+		keys = set()
+		cur = self
+		while cur:
+			keys.update(cur.table.keys())
+			cur = getattr(cur, 'parent', None)
+		keys = list(keys)
+		keys.sort()
+		return keys
+
+	def __iter__(self):
+		return iter(self.keys())
+
+	def __str__(self):
+		"""Text representation of the ConfigSet (for debugging purposes)"""
+		return "\n".join(["%r %r" % (x, self.__getitem__(x)) for x in self.keys()])
+
+	def __getitem__(self, key):
+		"""
+		Dictionary interface: get value from key::
+
+			def configure(conf):
+				conf.env['foo'] = {}
+				print(env['foo'])
+		"""
+		try:
+			while 1:
+				x = self.table.get(key)
+				if not x is None:
+					return x
+				self = self.parent
+		except AttributeError:
+			return []
+
+	def __setitem__(self, key, value):
+		"""
+		Dictionary interface: set value from key
+		"""
+		self.table[key] = value
+
+	def __delitem__(self, key):
+		"""
+		Dictionary interface: mark the value as missing
+		"""
+		self[key] = []
+
+	def __getattr__(self, name):
+		"""
+		Attribute access provided for convenience. The following forms are equivalent::
+
+			def configure(conf):
+				conf.env.value
+				conf.env['value']
+		"""
+		if name in self.__slots__:
+			return object.__getattribute__(self, name)
+		else:
+			return self[name]
+
+	def __setattr__(self, name, value):
+		"""
+		Attribute access provided for convenience. The following forms are equivalent::
+
+			def configure(conf):
+				conf.env.value = x
+				env['value'] = x
+		"""
+		if name in self.__slots__:
+			object.__setattr__(self, name, value)
+		else:
+			self[name] = value
+
+	def __delattr__(self, name):
+		"""
+		Attribute access provided for convenience. The following forms are equivalent::
+
+			def configure(conf):
+				del env.value
+				del env['value']
+		"""
+		if name in self.__slots__:
+			object.__delattr__(self, name)
+		else:
+			del self[name]
+
+	def derive(self):
+		"""
+		Returns a new ConfigSet deriving from self. The copy returned
+		will be a shallow copy::
+
+			from waflib.ConfigSet import ConfigSet
+			env = ConfigSet()
+			env.append_value('CFLAGS', ['-O2'])
+			child = env.derive()
+			child.CFLAGS.append('test') # warning! this will modify 'env'
+			child.CFLAGS = ['-O3'] # new list, ok
+			child.append_value('CFLAGS', ['-O3']) # ok
+
+		Use :py:func:`ConfigSet.detach` to detach the child from the parent.
+		"""
+		newenv = ConfigSet()
+		newenv.parent = self
+		return newenv
+
+	def detach(self):
+		"""
+		Detaches this instance from its parent (if present)
+
+		Modifying the parent :py:class:`ConfigSet` will not change the current object
+		Modifying this :py:class:`ConfigSet` will not modify the parent one.
+		"""
+		tbl = self.get_merged_dict()
+		try:
+			delattr(self, 'parent')
+		except AttributeError:
+			pass
+		else:
+			keys = tbl.keys()
+			for x in keys:
+				tbl[x] = copy.deepcopy(tbl[x])
+			self.table = tbl
+		return self
+
+	def get_flat(self, key):
+		"""
+		Returns a value as a string. If the input is a list, the value returned is space-separated.
+
+		:param key: key to use
+		:type key: string
+		"""
+		s = self[key]
+		if isinstance(s, str):
+			return s
+		return ' '.join(s)
+
+	def _get_list_value_for_modification(self, key):
+		"""
+		Returns a list value for further modification.
+
+		The list may be modified inplace and there is no need to do this afterwards::
+
+			self.table[var] = value
+		"""
+		try:
+			value = self.table[key]
+		except KeyError:
+			try:
+				value = self.parent[key]
+			except AttributeError:
+				value = []
+			else:
+				if isinstance(value, list):
+					# force a copy
+					value = value[:]
+				else:
+					value = [value]
+			self.table[key] = value
+		else:
+			if not isinstance(value, list):
+				self.table[key] = value = [value]
+		return value
+
+	def append_value(self, var, val):
+		"""
+		Appends a value to the specified config key::
+
+			def build(bld):
+				bld.env.append_value('CFLAGS', ['-O2'])
+
+		The value must be a list or a tuple
+		"""
+		if isinstance(val, str): # if there were string everywhere we could optimize this
+			val = [val]
+		current_value = self._get_list_value_for_modification(var)
+		current_value.extend(val)
+
+	def prepend_value(self, var, val):
+		"""
+		Prepends a value to the specified item::
+
+			def configure(conf):
+				conf.env.prepend_value('CFLAGS', ['-O2'])
+
+		The value must be a list or a tuple
+		"""
+		if isinstance(val, str):
+			val = [val]
+		self.table[var] =  val + self._get_list_value_for_modification(var)
+
+	def append_unique(self, var, val):
+		"""
+		Appends a value to the specified item only if it's not already present::
+
+			def build(bld):
+				bld.env.append_unique('CFLAGS', ['-O2', '-g'])
+
+		The value must be a list or a tuple
+		"""
+		if isinstance(val, str):
+			val = [val]
+		current_value = self._get_list_value_for_modification(var)
+
+		for x in val:
+			if x not in current_value:
+				current_value.append(x)
+
+	def get_merged_dict(self):
+		"""
+		Computes the merged dictionary from the fusion of self and all its parent
+
+		:rtype: a ConfigSet object
+		"""
+		table_list = []
+		env = self
+		while 1:
+			table_list.insert(0, env.table)
+			try:
+				env = env.parent
+			except AttributeError:
+				break
+		merged_table = {}
+		for table in table_list:
+			merged_table.update(table)
+		return merged_table
+
+	def store(self, filename):
+		"""
+		Serializes the :py:class:`ConfigSet` data to a file. See :py:meth:`ConfigSet.load` for reading such files.
+
+		:param filename: file to use
+		:type filename: string
+		"""
+		try:
+			os.makedirs(os.path.split(filename)[0])
+		except OSError:
+			pass
+
+		buf = []
+		merged_table = self.get_merged_dict()
+		keys = list(merged_table.keys())
+		keys.sort()
+
+		try:
+			fun = ascii
+		except NameError:
+			fun = repr
+
+		for k in keys:
+			if k != 'undo_stack':
+				buf.append('%s = %s\n' % (k, fun(merged_table[k])))
+		Utils.writef(filename, ''.join(buf))
+
+	def load(self, filename):
+		"""
+		Restores contents from a file (current values are not cleared). Files are written using :py:meth:`ConfigSet.store`.
+
+		:param filename: file to use
+		:type filename: string
+		"""
+		tbl = self.table
+		code = Utils.readf(filename, m='rU')
+		for m in re_imp.finditer(code):
+			g = m.group
+			tbl[g(2)] = eval(g(3))
+		Logs.debug('env: %s', self.table)
+
+	def update(self, d):
+		"""
+		Dictionary interface: replace values with the ones from another dict
+
+		:param d: object to use the value from
+		:type d: dict-like object
+		"""
+		self.table.update(d)
+
+	def stash(self):
+		"""
+		Stores the object state to provide transactionality semantics::
+
+			env = ConfigSet()
+			env.stash()
+			try:
+				env.append_value('CFLAGS', '-O3')
+				call_some_method(env)
+			finally:
+				env.revert()
+
+		The history is kept in a stack, and is lost during the serialization by :py:meth:`ConfigSet.store`
+		"""
+		orig = self.table
+		tbl = self.table = self.table.copy()
+		for x in tbl.keys():
+			tbl[x] = copy.deepcopy(tbl[x])
+		self.undo_stack = self.undo_stack + [orig]
+
+	def commit(self):
+		"""
+		Commits transactional changes. See :py:meth:`ConfigSet.stash`
+		"""
+		self.undo_stack.pop(-1)
+
+	def revert(self):
+		"""
+		Reverts the object to a previous state. See :py:meth:`ConfigSet.stash`
+		"""
+		self.table = self.undo_stack.pop(-1)
+
diff --git a/Configure.py b/Configure.py
new file mode 100644
index 0000000..d0a4793
--- /dev/null
+++ b/Configure.py
@@ -0,0 +1,638 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Configuration system
+
+A :py:class:`waflib.Configure.ConfigurationContext` instance is created when ``waf configure`` is called, it is used to:
+
+* create data dictionaries (ConfigSet instances)
+* store the list of modules to import
+* hold configuration routines such as ``find_program``, etc
+"""
+
+import os, re, shlex, shutil, sys, time, traceback
+from waflib import ConfigSet, Utils, Options, Logs, Context, Build, Errors
+
+WAF_CONFIG_LOG = 'config.log'
+"""Name of the configuration log file"""
+
+autoconfig = False
+"""Execute the configuration automatically"""
+
+conf_template = '''# project %(app)s configured on %(now)s by
+# waf %(wafver)s (abi %(abi)s, python %(pyver)x on %(systype)s)
+# using %(args)s
+#'''
+
+class ConfigurationContext(Context.Context):
+	'''configures the project'''
+
+	cmd = 'configure'
+
+	error_handlers = []
+	"""
+	Additional functions to handle configuration errors
+	"""
+
+	def __init__(self, **kw):
+		super(ConfigurationContext, self).__init__(**kw)
+		self.environ = dict(os.environ)
+		self.all_envs = {}
+
+		self.top_dir = None
+		self.out_dir = None
+
+		self.tools = [] # tools loaded in the configuration, and that will be loaded when building
+
+		self.hash = 0
+		self.files = []
+
+		self.tool_cache = []
+
+		self.setenv('')
+
+	def setenv(self, name, env=None):
+		"""
+		Set a new config set for conf.env. If a config set of that name already exists,
+		recall it without modification.
+
+		The name is the filename prefix to save to ``c4che/NAME_cache.py``, and it
+		is also used as *variants* by the build commands.
+		Though related to variants, whatever kind of data may be stored in the config set::
+
+			def configure(cfg):
+				cfg.env.ONE = 1
+				cfg.setenv('foo')
+				cfg.env.ONE = 2
+
+			def build(bld):
+				2 == bld.env_of_name('foo').ONE
+
+		:param name: name of the configuration set
+		:type name: string
+		:param env: ConfigSet to copy, or an empty ConfigSet is created
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		"""
+		if name not in self.all_envs or env:
+			if not env:
+				env = ConfigSet.ConfigSet()
+				self.prepare_env(env)
+			else:
+				env = env.derive()
+			self.all_envs[name] = env
+		self.variant = name
+
+	def get_env(self):
+		"""Getter for the env property"""
+		return self.all_envs[self.variant]
+	def set_env(self, val):
+		"""Setter for the env property"""
+		self.all_envs[self.variant] = val
+
+	env = property(get_env, set_env)
+
+	def init_dirs(self):
+		"""
+		Initialize the project directory and the build directory
+		"""
+
+		top = self.top_dir
+		if not top:
+			top = Options.options.top
+		if not top:
+			top = getattr(Context.g_module, Context.TOP, None)
+		if not top:
+			top = self.path.abspath()
+		top = os.path.abspath(top)
+
+		self.srcnode = (os.path.isabs(top) and self.root or self.path).find_dir(top)
+		assert(self.srcnode)
+
+		out = self.out_dir
+		if not out:
+			out = Options.options.out
+		if not out:
+			out = getattr(Context.g_module, Context.OUT, None)
+		if not out:
+			out = Options.lockfile.replace('.lock-waf_%s_' % sys.platform, '').replace('.lock-waf', '')
+
+		# someone can be messing with symlinks
+		out = os.path.realpath(out)
+
+		self.bldnode = (os.path.isabs(out) and self.root or self.path).make_node(out)
+		self.bldnode.mkdir()
+
+		if not os.path.isdir(self.bldnode.abspath()):
+			conf.fatal('Could not create the build directory %s' % self.bldnode.abspath())
+
+	def execute(self):
+		"""
+		See :py:func:`waflib.Context.Context.execute`
+		"""
+		self.init_dirs()
+
+		self.cachedir = self.bldnode.make_node(Build.CACHE_DIR)
+		self.cachedir.mkdir()
+
+		path = os.path.join(self.bldnode.abspath(), WAF_CONFIG_LOG)
+		self.logger = Logs.make_logger(path, 'cfg')
+
+		app = getattr(Context.g_module, 'APPNAME', '')
+		if app:
+			ver = getattr(Context.g_module, 'VERSION', '')
+			if ver:
+				app = "%s (%s)" % (app, ver)
+
+		params = {'now': time.ctime(), 'pyver': sys.hexversion, 'systype': sys.platform, 'args': " ".join(sys.argv), 'wafver': Context.WAFVERSION, 'abi': Context.ABI, 'app': app}
+		self.to_log(conf_template % params)
+		self.msg('Setting top to', self.srcnode.abspath())
+		self.msg('Setting out to', self.bldnode.abspath())
+
+		if id(self.srcnode) == id(self.bldnode):
+			Logs.warn('Setting top == out')
+		elif id(self.path) != id(self.srcnode):
+			if self.srcnode.is_child_of(self.path):
+				Logs.warn('Are you certain that you do not want to set top="." ?')
+
+		super(ConfigurationContext, self).execute()
+
+		self.store()
+
+		Context.top_dir = self.srcnode.abspath()
+		Context.out_dir = self.bldnode.abspath()
+
+		# this will write a configure lock so that subsequent builds will
+		# consider the current path as the root directory (see prepare_impl).
+		# to remove: use 'waf distclean'
+		env = ConfigSet.ConfigSet()
+		env.argv = sys.argv
+		env.options = Options.options.__dict__
+		env.config_cmd = self.cmd
+
+		env.run_dir = Context.run_dir
+		env.top_dir = Context.top_dir
+		env.out_dir = Context.out_dir
+
+		# conf.hash & conf.files hold wscript files paths and hash
+		# (used only by Configure.autoconfig)
+		env.hash = self.hash
+		env.files = self.files
+		env.environ = dict(self.environ)
+
+		if not (self.env.NO_LOCK_IN_RUN or env.environ.get('NO_LOCK_IN_RUN') or getattr(Options.options, 'no_lock_in_run')):
+			env.store(os.path.join(Context.run_dir, Options.lockfile))
+		if not (self.env.NO_LOCK_IN_TOP or env.environ.get('NO_LOCK_IN_TOP') or getattr(Options.options, 'no_lock_in_top')):
+			env.store(os.path.join(Context.top_dir, Options.lockfile))
+		if not (self.env.NO_LOCK_IN_OUT or env.environ.get('NO_LOCK_IN_OUT') or getattr(Options.options, 'no_lock_in_out')):
+			env.store(os.path.join(Context.out_dir, Options.lockfile))
+
+	def prepare_env(self, env):
+		"""
+		Insert *PREFIX*, *BINDIR* and *LIBDIR* values into ``env``
+
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		:param env: a ConfigSet, usually ``conf.env``
+		"""
+		if not env.PREFIX:
+			if Options.options.prefix or Utils.is_win32:
+				env.PREFIX = Options.options.prefix
+			else:
+				env.PREFIX = '/'
+		if not env.BINDIR:
+			if Options.options.bindir:
+				env.BINDIR = Options.options.bindir
+			else:
+				env.BINDIR = Utils.subst_vars('${PREFIX}/bin', env)
+		if not env.LIBDIR:
+			if Options.options.libdir:
+				env.LIBDIR = Options.options.libdir
+			else:
+				env.LIBDIR = Utils.subst_vars('${PREFIX}/lib%s' % Utils.lib64(), env)
+
+	def store(self):
+		"""Save the config results into the cache file"""
+		n = self.cachedir.make_node('build.config.py')
+		n.write('version = 0x%x\ntools = %r\n' % (Context.HEXVERSION, self.tools))
+
+		if not self.all_envs:
+			self.fatal('nothing to store in the configuration context!')
+
+		for key in self.all_envs:
+			tmpenv = self.all_envs[key]
+			tmpenv.store(os.path.join(self.cachedir.abspath(), key + Build.CACHE_SUFFIX))
+
+	def load(self, tool_list, tooldir=None, funs=None, with_sys_path=True, cache=False):
+		"""
+		Load Waf tools, which will be imported whenever a build is started.
+
+		:param tool_list: waf tools to import
+		:type tool_list: list of string
+		:param tooldir: paths for the imports
+		:type tooldir: list of string
+		:param funs: functions to execute from the waf tools
+		:type funs: list of string
+		:param cache: whether to prevent the tool from running twice
+		:type cache: bool
+		"""
+
+		tools = Utils.to_list(tool_list)
+		if tooldir:
+			tooldir = Utils.to_list(tooldir)
+		for tool in tools:
+			# avoid loading the same tool more than once with the same functions
+			# used by composite projects
+
+			if cache:
+				mag = (tool, id(self.env), tooldir, funs)
+				if mag in self.tool_cache:
+					self.to_log('(tool %s is already loaded, skipping)' % tool)
+					continue
+				self.tool_cache.append(mag)
+
+			module = None
+			try:
+				module = Context.load_tool(tool, tooldir, ctx=self, with_sys_path=with_sys_path)
+			except ImportError as e:
+				self.fatal('Could not load the Waf tool %r from %r\n%s' % (tool, getattr(e, 'waf_sys_path', sys.path), e))
+			except Exception as e:
+				self.to_log('imp %r (%r & %r)' % (tool, tooldir, funs))
+				self.to_log(traceback.format_exc())
+				raise
+
+			if funs is not None:
+				self.eval_rules(funs)
+			else:
+				func = getattr(module, 'configure', None)
+				if func:
+					if type(func) is type(Utils.readf):
+						func(self)
+					else:
+						self.eval_rules(func)
+
+			self.tools.append({'tool':tool, 'tooldir':tooldir, 'funs':funs})
+
+	def post_recurse(self, node):
+		"""
+		Records the path and a hash of the scripts visited, see :py:meth:`waflib.Context.Context.post_recurse`
+
+		:param node: script
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+		super(ConfigurationContext, self).post_recurse(node)
+		self.hash = Utils.h_list((self.hash, node.read('rb')))
+		self.files.append(node.abspath())
+
+	def eval_rules(self, rules):
+		"""
+		Execute configuration tests provided as list of functions to run
+
+		:param rules: list of configuration method names
+		:type rules: list of string
+		"""
+		self.rules = Utils.to_list(rules)
+		for x in self.rules:
+			f = getattr(self, x)
+			if not f:
+				self.fatal('No such configuration function %r' % x)
+			f()
+
+def conf(f):
+	"""
+	Decorator: attach new configuration functions to :py:class:`waflib.Build.BuildContext` and
+	:py:class:`waflib.Configure.ConfigurationContext`. The methods bound will accept a parameter
+	named 'mandatory' to disable the configuration errors::
+
+		def configure(conf):
+			conf.find_program('abc', mandatory=False)
+
+	:param f: method to bind
+	:type f: function
+	"""
+	def fun(*k, **kw):
+		mandatory = kw.pop('mandatory', True)
+		try:
+			return f(*k, **kw)
+		except Errors.ConfigurationError:
+			if mandatory:
+				raise
+
+	fun.__name__ = f.__name__
+	setattr(ConfigurationContext, f.__name__, fun)
+	setattr(Build.BuildContext, f.__name__, fun)
+	return f
+
+@conf
+def add_os_flags(self, var, dest=None, dup=False):
+	"""
+	Import operating system environment values into ``conf.env`` dict::
+
+		def configure(conf):
+			conf.add_os_flags('CFLAGS')
+
+	:param var: variable to use
+	:type var: string
+	:param dest: destination variable, by default the same as var
+	:type dest: string
+	:param dup: add the same set of flags again
+	:type dup: bool
+	"""
+	try:
+		flags = shlex.split(self.environ[var])
+	except KeyError:
+		return
+	if dup or ''.join(flags) not in ''.join(Utils.to_list(self.env[dest or var])):
+		self.env.append_value(dest or var, flags)
+
+@conf
+def cmd_to_list(self, cmd):
+	"""
+	Detect if a command is written in pseudo shell like ``ccache g++`` and return a list.
+
+	:param cmd: command
+	:type cmd: a string or a list of string
+	"""
+	if isinstance(cmd, str):
+		if os.path.isfile(cmd):
+			# do not take any risk
+			return [cmd]
+		if os.sep == '/':
+			return shlex.split(cmd)
+		else:
+			try:
+				return shlex.split(cmd, posix=False)
+			except TypeError:
+				# Python 2.5 on windows?
+				return shlex.split(cmd)
+	return cmd
+
+@conf
+def check_waf_version(self, mini='1.9.99', maxi='2.1.0', **kw):
+	"""
+	Raise a Configuration error if the Waf version does not strictly match the given bounds::
+
+		conf.check_waf_version(mini='1.9.99', maxi='2.1.0')
+
+	:type  mini: number, tuple or string
+	:param mini: Minimum required version
+	:type  maxi: number, tuple or string
+	:param maxi: Maximum allowed version
+	"""
+	self.start_msg('Checking for waf version in %s-%s' % (str(mini), str(maxi)), **kw)
+	ver = Context.HEXVERSION
+	if Utils.num2ver(mini) > ver:
+		self.fatal('waf version should be at least %r (%r found)' % (Utils.num2ver(mini), ver))
+	if Utils.num2ver(maxi) < ver:
+		self.fatal('waf version should be at most %r (%r found)' % (Utils.num2ver(maxi), ver))
+	self.end_msg('ok', **kw)
+
+@conf
+def find_file(self, filename, path_list=[]):
+	"""
+	Find a file in a list of paths
+
+	:param filename: name of the file to search for
+	:param path_list: list of directories to search
+	:return: the first matching filename; else a configuration exception is raised
+	"""
+	for n in Utils.to_list(filename):
+		for d in Utils.to_list(path_list):
+			p = os.path.expanduser(os.path.join(d, n))
+			if os.path.exists(p):
+				return p
+	self.fatal('Could not find %r' % filename)
+
+@conf
+def find_program(self, filename, **kw):
+	"""
+	Search for a program on the operating system
+
+	When var is used, you may set os.environ[var] to help find a specific program version, for example::
+
+		$ CC='ccache gcc' waf configure
+
+	:param path_list: paths to use for searching
+	:type param_list: list of string
+	:param var: store the result to conf.env[var] where var defaults to filename.upper() if not provided; the result is stored as a list of strings
+	:type var: string
+	:param value: obtain the program from the value passed exclusively
+	:type value: list or string (list is preferred)
+	:param exts: list of extensions for the binary (do not add an extension for portability)
+	:type exts: list of string
+	:param msg: name to display in the log, by default filename is used
+	:type msg: string
+	:param interpreter: interpreter for the program
+	:type interpreter: ConfigSet variable key
+	:raises: :py:class:`waflib.Errors.ConfigurationError`
+	"""
+
+	exts = kw.get('exts', Utils.is_win32 and '.exe,.com,.bat,.cmd' or ',.sh,.pl,.py')
+
+	environ = kw.get('environ', getattr(self, 'environ', os.environ))
+
+	ret = ''
+
+	filename = Utils.to_list(filename)
+	msg = kw.get('msg', ', '.join(filename))
+
+	var = kw.get('var', '')
+	if not var:
+		var = re.sub(r'[-.]', '_', filename[0].upper())
+
+	path_list = kw.get('path_list', '')
+	if path_list:
+		path_list = Utils.to_list(path_list)
+	else:
+		path_list = environ.get('PATH', '').split(os.pathsep)
+
+	if kw.get('value'):
+		# user-provided in command-line options and passed to find_program
+		ret = self.cmd_to_list(kw['value'])
+	elif environ.get(var):
+		# user-provided in the os environment
+		ret = self.cmd_to_list(environ[var])
+	elif self.env[var]:
+		# a default option in the wscript file
+		ret = self.cmd_to_list(self.env[var])
+	else:
+		if not ret:
+			ret = self.find_binary(filename, exts.split(','), path_list)
+		if not ret and Utils.winreg:
+			ret = Utils.get_registry_app_path(Utils.winreg.HKEY_CURRENT_USER, filename)
+		if not ret and Utils.winreg:
+			ret = Utils.get_registry_app_path(Utils.winreg.HKEY_LOCAL_MACHINE, filename)
+		ret = self.cmd_to_list(ret)
+
+	if ret:
+		if len(ret) == 1:
+			retmsg = ret[0]
+		else:
+			retmsg = ret
+	else:
+		retmsg = False
+
+	self.msg('Checking for program %r' % msg, retmsg, **kw)
+	if not kw.get('quiet'):
+		self.to_log('find program=%r paths=%r var=%r -> %r' % (filename, path_list, var, ret))
+
+	if not ret:
+		self.fatal(kw.get('errmsg', '') or 'Could not find the program %r' % filename)
+
+	interpreter = kw.get('interpreter')
+	if interpreter is None:
+		if not Utils.check_exe(ret[0], env=environ):
+			self.fatal('Program %r is not executable' % ret)
+		self.env[var] = ret
+	else:
+		self.env[var] = self.env[interpreter] + ret
+
+	return ret
+
+@conf
+def find_binary(self, filenames, exts, paths):
+	for f in filenames:
+		for ext in exts:
+			exe_name = f + ext
+			if os.path.isabs(exe_name):
+				if os.path.isfile(exe_name):
+					return exe_name
+			else:
+				for path in paths:
+					x = os.path.expanduser(os.path.join(path, exe_name))
+					if os.path.isfile(x):
+						return x
+	return None
+
+@conf
+def run_build(self, *k, **kw):
+	"""
+	Create a temporary build context to execute a build. A reference to that build
+	context is kept on self.test_bld for debugging purposes, and you should not rely
+	on it too much (read the note on the cache below).
+	The parameters given in the arguments to this function are passed as arguments for
+	a single task generator created in the build. Only three parameters are obligatory:
+
+	:param features: features to pass to a task generator created in the build
+	:type features: list of string
+	:param compile_filename: file to create for the compilation (default: *test.c*)
+	:type compile_filename: string
+	:param code: code to write in the filename to compile
+	:type code: string
+
+	Though this function returns *0* by default, the build may set an attribute named *retval* on the
+	build context object to return a particular value. See :py:func:`waflib.Tools.c_config.test_exec_fun` for example.
+
+	This function also provides a limited cache. To use it, provide the following option::
+
+		def options(opt):
+			opt.add_option('--confcache', dest='confcache', default=0,
+				action='count', help='Use a configuration cache')
+
+	And execute the configuration with the following command-line::
+
+		$ waf configure --confcache
+
+	"""
+	lst = [str(v) for (p, v) in kw.items() if p != 'env']
+	h = Utils.h_list(lst)
+	dir = self.bldnode.abspath() + os.sep + (not Utils.is_win32 and '.' or '') + 'conf_check_' + Utils.to_hex(h)
+
+	try:
+		os.makedirs(dir)
+	except OSError:
+		pass
+
+	try:
+		os.stat(dir)
+	except OSError:
+		self.fatal('cannot use the configuration test folder %r' % dir)
+
+	cachemode = getattr(Options.options, 'confcache', None)
+	if cachemode == 1:
+		try:
+			proj = ConfigSet.ConfigSet(os.path.join(dir, 'cache_run_build'))
+		except EnvironmentError:
+			pass
+		else:
+			ret = proj['cache_run_build']
+			if isinstance(ret, str) and ret.startswith('Test does not build'):
+				self.fatal(ret)
+			return ret
+
+	bdir = os.path.join(dir, 'testbuild')
+
+	if not os.path.exists(bdir):
+		os.makedirs(bdir)
+
+	cls_name = kw.get('run_build_cls') or getattr(self, 'run_build_cls', 'build')
+	self.test_bld = bld = Context.create_context(cls_name, top_dir=dir, out_dir=bdir)
+	bld.init_dirs()
+	bld.progress_bar = 0
+	bld.targets = '*'
+
+	bld.logger = self.logger
+	bld.all_envs.update(self.all_envs) # not really necessary
+	bld.env = kw['env']
+
+	bld.kw = kw
+	bld.conf = self
+	kw['build_fun'](bld)
+	ret = -1
+	try:
+		try:
+			bld.compile()
+		except Errors.WafError:
+			ret = 'Test does not build: %s' % traceback.format_exc()
+			self.fatal(ret)
+		else:
+			ret = getattr(bld, 'retval', 0)
+	finally:
+		if cachemode == 1:
+			# cache the results each time
+			proj = ConfigSet.ConfigSet()
+			proj['cache_run_build'] = ret
+			proj.store(os.path.join(dir, 'cache_run_build'))
+		else:
+			shutil.rmtree(dir)
+	return ret
+
+@conf
+def ret_msg(self, msg, args):
+	if isinstance(msg, str):
+		return msg
+	return msg(args)
+
+@conf
+def test(self, *k, **kw):
+
+	if not 'env' in kw:
+		kw['env'] = self.env.derive()
+
+	# validate_c for example
+	if kw.get('validate'):
+		kw['validate'](kw)
+
+	self.start_msg(kw['msg'], **kw)
+	ret = None
+	try:
+		ret = self.run_build(*k, **kw)
+	except self.errors.ConfigurationError:
+		self.end_msg(kw['errmsg'], 'YELLOW', **kw)
+		if Logs.verbose > 1:
+			raise
+		else:
+			self.fatal('The configuration failed')
+	else:
+		kw['success'] = ret
+
+	if kw.get('post_check'):
+		ret = kw['post_check'](kw)
+
+	if ret:
+		self.end_msg(kw['errmsg'], 'YELLOW', **kw)
+		self.fatal('The configuration failed %r' % ret)
+	else:
+		self.end_msg(self.ret_msg(kw['okmsg'], kw), **kw)
+	return ret
+
diff --git a/Context.py b/Context.py
new file mode 100644
index 0000000..bb47c92
--- /dev/null
+++ b/Context.py
@@ -0,0 +1,737 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2010-2018 (ita)
+
+"""
+Classes and functions enabling the command system
+"""
+
+import os, re, imp, sys
+from waflib import Utils, Errors, Logs
+import waflib.Node
+
+# the following 3 constants are updated on each new release (do not touch)
+HEXVERSION=0x2000b00
+"""Constant updated on new releases"""
+
+WAFVERSION="2.0.11"
+"""Constant updated on new releases"""
+
+WAFREVISION="a97f6fb0941091b4966b625f15ec32fa783a8bec"
+"""Git revision when the waf version is updated"""
+
+ABI = 20
+"""Version of the build data cache file format (used in :py:const:`waflib.Context.DBFILE`)"""
+
+DBFILE = '.wafpickle-%s-%d-%d' % (sys.platform, sys.hexversion, ABI)
+"""Name of the pickle file for storing the build data"""
+
+APPNAME = 'APPNAME'
+"""Default application name (used by ``waf dist``)"""
+
+VERSION = 'VERSION'
+"""Default application version (used by ``waf dist``)"""
+
+TOP  = 'top'
+"""The variable name for the top-level directory in wscript files"""
+
+OUT  = 'out'
+"""The variable name for the output directory in wscript files"""
+
+WSCRIPT_FILE = 'wscript'
+"""Name of the waf script files"""
+
+launch_dir = ''
+"""Directory from which waf has been called"""
+run_dir = ''
+"""Location of the wscript file to use as the entry point"""
+top_dir = ''
+"""Location of the project directory (top), if the project was configured"""
+out_dir = ''
+"""Location of the build directory (out), if the project was configured"""
+waf_dir = ''
+"""Directory containing the waf modules"""
+
+default_encoding = Utils.console_encoding()
+"""Encoding to use when reading outputs from other processes"""
+
+g_module = None
+"""
+Module representing the top-level wscript file (see :py:const:`waflib.Context.run_dir`)
+"""
+
+STDOUT = 1
+STDERR = -1
+BOTH   = 0
+
+classes = []
+"""
+List of :py:class:`waflib.Context.Context` subclasses that can be used as waf commands. The classes
+are added automatically by a metaclass.
+"""
+
+def create_context(cmd_name, *k, **kw):
+	"""
+	Returns a new :py:class:`waflib.Context.Context` instance corresponding to the given command.
+	Used in particular by :py:func:`waflib.Scripting.run_command`
+
+	:param cmd_name: command name
+	:type cmd_name: string
+	:param k: arguments to give to the context class initializer
+	:type k: list
+	:param k: keyword arguments to give to the context class initializer
+	:type k: dict
+	:return: Context object
+	:rtype: :py:class:`waflib.Context.Context`
+	"""
+	for x in classes:
+		if x.cmd == cmd_name:
+			return x(*k, **kw)
+	ctx = Context(*k, **kw)
+	ctx.fun = cmd_name
+	return ctx
+
+class store_context(type):
+	"""
+	Metaclass that registers command classes into the list :py:const:`waflib.Context.classes`
+	Context classes must provide an attribute 'cmd' representing the command name, and a function
+	attribute 'fun' representing the function name that the command uses.
+	"""
+	def __init__(cls, name, bases, dct):
+		super(store_context, cls).__init__(name, bases, dct)
+		name = cls.__name__
+
+		if name in ('ctx', 'Context'):
+			return
+
+		try:
+			cls.cmd
+		except AttributeError:
+			raise Errors.WafError('Missing command for the context class %r (cmd)' % name)
+
+		if not getattr(cls, 'fun', None):
+			cls.fun = cls.cmd
+
+		classes.insert(0, cls)
+
+ctx = store_context('ctx', (object,), {})
+"""Base class for all :py:class:`waflib.Context.Context` classes"""
+
+class Context(ctx):
+	"""
+	Default context for waf commands, and base class for new command contexts.
+
+	Context objects are passed to top-level functions::
+
+		def foo(ctx):
+			print(ctx.__class__.__name__) # waflib.Context.Context
+
+	Subclasses must define the class attributes 'cmd' and 'fun':
+
+	:param cmd: command to execute as in ``waf cmd``
+	:type cmd: string
+	:param fun: function name to execute when the command is called
+	:type fun: string
+
+	.. inheritance-diagram:: waflib.Context.Context waflib.Build.BuildContext waflib.Build.InstallContext waflib.Build.UninstallContext waflib.Build.StepContext waflib.Build.ListContext waflib.Configure.ConfigurationContext waflib.Scripting.Dist waflib.Scripting.DistCheck waflib.Build.CleanContext
+
+	"""
+
+	errors = Errors
+	"""
+	Shortcut to :py:mod:`waflib.Errors` provided for convenience
+	"""
+
+	tools = {}
+	"""
+	A module cache for wscript files; see :py:meth:`Context.Context.load`
+	"""
+
+	def __init__(self, **kw):
+		try:
+			rd = kw['run_dir']
+		except KeyError:
+			rd = run_dir
+
+		# binds the context to the nodes in use to avoid a context singleton
+		self.node_class = type('Nod3', (waflib.Node.Node,), {})
+		self.node_class.__module__ = 'waflib.Node'
+		self.node_class.ctx = self
+
+		self.root = self.node_class('', None)
+		self.cur_script = None
+		self.path = self.root.find_dir(rd)
+
+		self.stack_path = []
+		self.exec_dict = {'ctx':self, 'conf':self, 'bld':self, 'opt':self}
+		self.logger = None
+
+	def finalize(self):
+		"""
+		Called to free resources such as logger files
+		"""
+		try:
+			logger = self.logger
+		except AttributeError:
+			pass
+		else:
+			Logs.free_logger(logger)
+			delattr(self, 'logger')
+
+	def load(self, tool_list, *k, **kw):
+		"""
+		Loads a Waf tool as a module, and try calling the function named :py:const:`waflib.Context.Context.fun`
+		from it.  A ``tooldir`` argument may be provided as a list of module paths.
+
+		:param tool_list: list of Waf tool names to load
+		:type tool_list: list of string or space-separated string
+		"""
+		tools = Utils.to_list(tool_list)
+		path = Utils.to_list(kw.get('tooldir', ''))
+		with_sys_path = kw.get('with_sys_path', True)
+
+		for t in tools:
+			module = load_tool(t, path, with_sys_path=with_sys_path)
+			fun = getattr(module, kw.get('name', self.fun), None)
+			if fun:
+				fun(self)
+
+	def execute(self):
+		"""
+		Here, it calls the function name in the top-level wscript file. Most subclasses
+		redefine this method to provide additional functionality.
+		"""
+		self.recurse([os.path.dirname(g_module.root_path)])
+
+	def pre_recurse(self, node):
+		"""
+		Method executed immediately before a folder is read by :py:meth:`waflib.Context.Context.recurse`.
+		The current script is bound as a Node object on ``self.cur_script``, and the current path
+		is bound to ``self.path``
+
+		:param node: script
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+		self.stack_path.append(self.cur_script)
+
+		self.cur_script = node
+		self.path = node.parent
+
+	def post_recurse(self, node):
+		"""
+		Restores ``self.cur_script`` and ``self.path`` right after :py:meth:`waflib.Context.Context.recurse` terminates.
+
+		:param node: script
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+		self.cur_script = self.stack_path.pop()
+		if self.cur_script:
+			self.path = self.cur_script.parent
+
+	def recurse(self, dirs, name=None, mandatory=True, once=True, encoding=None):
+		"""
+		Runs user-provided functions from the supplied list of directories.
+		The directories can be either absolute, or relative to the directory
+		of the wscript file
+
+		The methods :py:meth:`waflib.Context.Context.pre_recurse` and
+		:py:meth:`waflib.Context.Context.post_recurse` are called immediately before
+		and after a script has been executed.
+
+		:param dirs: List of directories to visit
+		:type dirs: list of string or space-separated string
+		:param name: Name of function to invoke from the wscript
+		:type  name: string
+		:param mandatory: whether sub wscript files are required to exist
+		:type  mandatory: bool
+		:param once: read the script file once for a particular context
+		:type once: bool
+		"""
+		try:
+			cache = self.recurse_cache
+		except AttributeError:
+			cache = self.recurse_cache = {}
+
+		for d in Utils.to_list(dirs):
+
+			if not os.path.isabs(d):
+				# absolute paths only
+				d = os.path.join(self.path.abspath(), d)
+
+			WSCRIPT     = os.path.join(d, WSCRIPT_FILE)
+			WSCRIPT_FUN = WSCRIPT + '_' + (name or self.fun)
+
+			node = self.root.find_node(WSCRIPT_FUN)
+			if node and (not once or node not in cache):
+				cache[node] = True
+				self.pre_recurse(node)
+				try:
+					function_code = node.read('rU', encoding)
+					exec(compile(function_code, node.abspath(), 'exec'), self.exec_dict)
+				finally:
+					self.post_recurse(node)
+			elif not node:
+				node = self.root.find_node(WSCRIPT)
+				tup = (node, name or self.fun)
+				if node and (not once or tup not in cache):
+					cache[tup] = True
+					self.pre_recurse(node)
+					try:
+						wscript_module = load_module(node.abspath(), encoding=encoding)
+						user_function = getattr(wscript_module, (name or self.fun), None)
+						if not user_function:
+							if not mandatory:
+								continue
+							raise Errors.WafError('No function %r defined in %s' % (name or self.fun, node.abspath()))
+						user_function(self)
+					finally:
+						self.post_recurse(node)
+				elif not node:
+					if not mandatory:
+						continue
+					try:
+						os.listdir(d)
+					except OSError:
+						raise Errors.WafError('Cannot read the folder %r' % d)
+					raise Errors.WafError('No wscript file in directory %s' % d)
+
+	def log_command(self, cmd, kw):
+		if Logs.verbose:
+			fmt = os.environ.get('WAF_CMD_FORMAT')
+			if fmt == 'string':
+				if not isinstance(cmd, str):
+					cmd = Utils.shell_escape(cmd)
+			Logs.debug('runner: %r', cmd)
+			Logs.debug('runner_env: kw=%s', kw)
+
+	def exec_command(self, cmd, **kw):
+		"""
+		Runs an external process and returns the exit status::
+
+			def run(tsk):
+				ret = tsk.generator.bld.exec_command('touch foo.txt')
+				return ret
+
+		If the context has the attribute 'log', then captures and logs the process stderr/stdout.
+		Unlike :py:meth:`waflib.Context.Context.cmd_and_log`, this method does not return the
+		stdout/stderr values captured.
+
+		:param cmd: command argument for subprocess.Popen
+		:type cmd: string or list
+		:param kw: keyword arguments for subprocess.Popen. The parameters input/timeout will be passed to wait/communicate.
+		:type kw: dict
+		:returns: process exit status
+		:rtype: integer
+		:raises: :py:class:`waflib.Errors.WafError` if an invalid executable is specified for a non-shell process
+		:raises: :py:class:`waflib.Errors.WafError` in case of execution failure
+		"""
+		subprocess = Utils.subprocess
+		kw['shell'] = isinstance(cmd, str)
+		self.log_command(cmd, kw)
+
+		if self.logger:
+			self.logger.info(cmd)
+
+		if 'stdout' not in kw:
+			kw['stdout'] = subprocess.PIPE
+		if 'stderr' not in kw:
+			kw['stderr'] = subprocess.PIPE
+
+		if Logs.verbose and not kw['shell'] and not Utils.check_exe(cmd[0]):
+			raise Errors.WafError('Program %s not found!' % cmd[0])
+
+		cargs = {}
+		if 'timeout' in kw:
+			if sys.hexversion >= 0x3030000:
+				cargs['timeout'] = kw['timeout']
+				if not 'start_new_session' in kw:
+					kw['start_new_session'] = True
+			del kw['timeout']
+		if 'input' in kw:
+			if kw['input']:
+				cargs['input'] = kw['input']
+				kw['stdin'] = subprocess.PIPE
+			del kw['input']
+
+		if 'cwd' in kw:
+			if not isinstance(kw['cwd'], str):
+				kw['cwd'] = kw['cwd'].abspath()
+
+		encoding = kw.pop('decode_as', default_encoding)
+
+		try:
+			ret, out, err = Utils.run_process(cmd, kw, cargs)
+		except Exception as e:
+			raise Errors.WafError('Execution failure: %s' % str(e), ex=e)
+
+		if out:
+			if not isinstance(out, str):
+				out = out.decode(encoding, errors='replace')
+			if self.logger:
+				self.logger.debug('out: %s', out)
+			else:
+				Logs.info(out, extra={'stream':sys.stdout, 'c1': ''})
+		if err:
+			if not isinstance(err, str):
+				err = err.decode(encoding, errors='replace')
+			if self.logger:
+				self.logger.error('err: %s' % err)
+			else:
+				Logs.info(err, extra={'stream':sys.stderr, 'c1': ''})
+
+		return ret
+
+	def cmd_and_log(self, cmd, **kw):
+		"""
+		Executes a process and returns stdout/stderr if the execution is successful.
+		An exception is thrown when the exit status is non-0. In that case, both stderr and stdout
+		will be bound to the WafError object (configuration tests)::
+
+			def configure(conf):
+				out = conf.cmd_and_log(['echo', 'hello'], output=waflib.Context.STDOUT, quiet=waflib.Context.BOTH)
+				(out, err) = conf.cmd_and_log(['echo', 'hello'], output=waflib.Context.BOTH)
+				(out, err) = conf.cmd_and_log(cmd, input='\\n'.encode(), output=waflib.Context.STDOUT)
+				try:
+					conf.cmd_and_log(['which', 'someapp'], output=waflib.Context.BOTH)
+				except Errors.WafError as e:
+					print(e.stdout, e.stderr)
+
+		:param cmd: args for subprocess.Popen
+		:type cmd: list or string
+		:param kw: keyword arguments for subprocess.Popen. The parameters input/timeout will be passed to wait/communicate.
+		:type kw: dict
+		:returns: a tuple containing the contents of stdout and stderr
+		:rtype: string
+		:raises: :py:class:`waflib.Errors.WafError` if an invalid executable is specified for a non-shell process
+		:raises: :py:class:`waflib.Errors.WafError` in case of execution failure; stdout/stderr/returncode are bound to the exception object
+		"""
+		subprocess = Utils.subprocess
+		kw['shell'] = isinstance(cmd, str)
+		self.log_command(cmd, kw)
+
+		quiet = kw.pop('quiet', None)
+		to_ret = kw.pop('output', STDOUT)
+
+		if Logs.verbose and not kw['shell'] and not Utils.check_exe(cmd[0]):
+			raise Errors.WafError('Program %r not found!' % cmd[0])
+
+		kw['stdout'] = kw['stderr'] = subprocess.PIPE
+		if quiet is None:
+			self.to_log(cmd)
+
+		cargs = {}
+		if 'timeout' in kw:
+			if sys.hexversion >= 0x3030000:
+				cargs['timeout'] = kw['timeout']
+				if not 'start_new_session' in kw:
+					kw['start_new_session'] = True
+			del kw['timeout']
+		if 'input' in kw:
+			if kw['input']:
+				cargs['input'] = kw['input']
+				kw['stdin'] = subprocess.PIPE
+			del kw['input']
+
+		if 'cwd' in kw:
+			if not isinstance(kw['cwd'], str):
+				kw['cwd'] = kw['cwd'].abspath()
+
+		encoding = kw.pop('decode_as', default_encoding)
+
+		try:
+			ret, out, err = Utils.run_process(cmd, kw, cargs)
+		except Exception as e:
+			raise Errors.WafError('Execution failure: %s' % str(e), ex=e)
+
+		if not isinstance(out, str):
+			out = out.decode(encoding, errors='replace')
+		if not isinstance(err, str):
+			err = err.decode(encoding, errors='replace')
+
+		if out and quiet != STDOUT and quiet != BOTH:
+			self.to_log('out: %s' % out)
+		if err and quiet != STDERR and quiet != BOTH:
+			self.to_log('err: %s' % err)
+
+		if ret:
+			e = Errors.WafError('Command %r returned %r' % (cmd, ret))
+			e.returncode = ret
+			e.stderr = err
+			e.stdout = out
+			raise e
+
+		if to_ret == BOTH:
+			return (out, err)
+		elif to_ret == STDERR:
+			return err
+		return out
+
+	def fatal(self, msg, ex=None):
+		"""
+		Prints an error message in red and stops command execution; this is
+		usually used in the configuration section::
+
+			def configure(conf):
+				conf.fatal('a requirement is missing')
+
+		:param msg: message to display
+		:type msg: string
+		:param ex: optional exception object
+		:type ex: exception
+		:raises: :py:class:`waflib.Errors.ConfigurationError`
+		"""
+		if self.logger:
+			self.logger.info('from %s: %s' % (self.path.abspath(), msg))
+		try:
+			logfile = self.logger.handlers[0].baseFilename
+		except AttributeError:
+			pass
+		else:
+			if os.environ.get('WAF_PRINT_FAILURE_LOG'):
+				# see #1930
+				msg = 'Log from (%s):\n%s\n' % (logfile, Utils.readf(logfile))
+			else:
+				msg = '%s\n(complete log in %s)' % (msg, logfile)
+		raise self.errors.ConfigurationError(msg, ex=ex)
+
+	def to_log(self, msg):
+		"""
+		Logs information to the logger (if present), or to stderr.
+		Empty messages are not printed::
+
+			def build(bld):
+				bld.to_log('starting the build')
+
+		Provide a logger on the context class or override this method if necessary.
+
+		:param msg: message
+		:type msg: string
+		"""
+		if not msg:
+			return
+		if self.logger:
+			self.logger.info(msg)
+		else:
+			sys.stderr.write(str(msg))
+			sys.stderr.flush()
+
+
+	def msg(self, *k, **kw):
+		"""
+		Prints a configuration message of the form ``msg: result``.
+		The second part of the message will be in colors. The output
+		can be disabled easly by setting ``in_msg`` to a positive value::
+
+			def configure(conf):
+				self.in_msg = 1
+				conf.msg('Checking for library foo', 'ok')
+				# no output
+
+		:param msg: message to display to the user
+		:type msg: string
+		:param result: result to display
+		:type result: string or boolean
+		:param color: color to use, see :py:const:`waflib.Logs.colors_lst`
+		:type color: string
+		"""
+		try:
+			msg = kw['msg']
+		except KeyError:
+			msg = k[0]
+
+		self.start_msg(msg, **kw)
+
+		try:
+			result = kw['result']
+		except KeyError:
+			result = k[1]
+
+		color = kw.get('color')
+		if not isinstance(color, str):
+			color = result and 'GREEN' or 'YELLOW'
+
+		self.end_msg(result, color, **kw)
+
+	def start_msg(self, *k, **kw):
+		"""
+		Prints the beginning of a 'Checking for xxx' message. See :py:meth:`waflib.Context.Context.msg`
+		"""
+		if kw.get('quiet'):
+			return
+
+		msg = kw.get('msg') or k[0]
+		try:
+			if self.in_msg:
+				self.in_msg += 1
+				return
+		except AttributeError:
+			self.in_msg = 0
+		self.in_msg += 1
+
+		try:
+			self.line_just = max(self.line_just, len(msg))
+		except AttributeError:
+			self.line_just = max(40, len(msg))
+		for x in (self.line_just * '-', msg):
+			self.to_log(x)
+		Logs.pprint('NORMAL', "%s :" % msg.ljust(self.line_just), sep='')
+
+	def end_msg(self, *k, **kw):
+		"""Prints the end of a 'Checking for' message. See :py:meth:`waflib.Context.Context.msg`"""
+		if kw.get('quiet'):
+			return
+		self.in_msg -= 1
+		if self.in_msg:
+			return
+
+		result = kw.get('result') or k[0]
+
+		defcolor = 'GREEN'
+		if result is True:
+			msg = 'ok'
+		elif not result:
+			msg = 'not found'
+			defcolor = 'YELLOW'
+		else:
+			msg = str(result)
+
+		self.to_log(msg)
+		try:
+			color = kw['color']
+		except KeyError:
+			if len(k) > 1 and k[1] in Logs.colors_lst:
+				# compatibility waf 1.7
+				color = k[1]
+			else:
+				color = defcolor
+		Logs.pprint(color, msg)
+
+	def load_special_tools(self, var, ban=[]):
+		"""
+		Loads third-party extensions modules for certain programming languages
+		by trying to list certain files in the extras/ directory. This method
+		is typically called once for a programming language group, see for
+		example :py:mod:`waflib.Tools.compiler_c`
+
+		:param var: glob expression, for example 'cxx\_\*.py'
+		:type var: string
+		:param ban: list of exact file names to exclude
+		:type ban: list of string
+		"""
+		if os.path.isdir(waf_dir):
+			lst = self.root.find_node(waf_dir).find_node('waflib/extras').ant_glob(var)
+			for x in lst:
+				if not x.name in ban:
+					load_tool(x.name.replace('.py', ''))
+		else:
+			from zipfile import PyZipFile
+			waflibs = PyZipFile(waf_dir)
+			lst = waflibs.namelist()
+			for x in lst:
+				if not re.match('waflib/extras/%s' % var.replace('*', '.*'), var):
+					continue
+				f = os.path.basename(x)
+				doban = False
+				for b in ban:
+					r = b.replace('*', '.*')
+					if re.match(r, f):
+						doban = True
+				if not doban:
+					f = f.replace('.py', '')
+					load_tool(f)
+
+cache_modules = {}
+"""
+Dictionary holding already loaded modules (wscript), indexed by their absolute path.
+The modules are added automatically by :py:func:`waflib.Context.load_module`
+"""
+
+def load_module(path, encoding=None):
+	"""
+	Loads a wscript file as a python module. This method caches results in :py:attr:`waflib.Context.cache_modules`
+
+	:param path: file path
+	:type path: string
+	:return: Loaded Python module
+	:rtype: module
+	"""
+	try:
+		return cache_modules[path]
+	except KeyError:
+		pass
+
+	module = imp.new_module(WSCRIPT_FILE)
+	try:
+		code = Utils.readf(path, m='rU', encoding=encoding)
+	except EnvironmentError:
+		raise Errors.WafError('Could not read the file %r' % path)
+
+	module_dir = os.path.dirname(path)
+	sys.path.insert(0, module_dir)
+	try:
+		exec(compile(code, path, 'exec'), module.__dict__)
+	finally:
+		sys.path.remove(module_dir)
+
+	cache_modules[path] = module
+	return module
+
+def load_tool(tool, tooldir=None, ctx=None, with_sys_path=True):
+	"""
+	Importx a Waf tool as a python module, and stores it in the dict :py:const:`waflib.Context.Context.tools`
+
+	:type  tool: string
+	:param tool: Name of the tool
+	:type  tooldir: list
+	:param tooldir: List of directories to search for the tool module
+	:type  with_sys_path: boolean
+	:param with_sys_path: whether or not to search the regular sys.path, besides waf_dir and potentially given tooldirs
+	"""
+	if tool == 'java':
+		tool = 'javaw' # jython
+	else:
+		tool = tool.replace('++', 'xx')
+
+	if not with_sys_path:
+		back_path = sys.path
+		sys.path = []
+	try:
+		if tooldir:
+			assert isinstance(tooldir, list)
+			sys.path = tooldir + sys.path
+			try:
+				__import__(tool)
+			except ImportError as e:
+				e.waf_sys_path = list(sys.path)
+				raise
+			finally:
+				for d in tooldir:
+					sys.path.remove(d)
+			ret = sys.modules[tool]
+			Context.tools[tool] = ret
+			return ret
+		else:
+			if not with_sys_path:
+				sys.path.insert(0, waf_dir)
+			try:
+				for x in ('waflib.Tools.%s', 'waflib.extras.%s', 'waflib.%s', '%s'):
+					try:
+						__import__(x % tool)
+						break
+					except ImportError:
+						x = None
+				else: # raise an exception
+					__import__(tool)
+			except ImportError as e:
+				e.waf_sys_path = list(sys.path)
+				raise
+			finally:
+				if not with_sys_path:
+					sys.path.remove(waf_dir)
+			ret = sys.modules[x % tool]
+			Context.tools[tool] = ret
+			return ret
+	finally:
+		if not with_sys_path:
+			sys.path += back_path
+
diff --git a/Errors.py b/Errors.py
new file mode 100644
index 0000000..bf75c1b
--- /dev/null
+++ b/Errors.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2010-2018 (ita)
+
+"""
+Exceptions used in the Waf code
+"""
+
+import traceback, sys
+
+class WafError(Exception):
+	"""Base class for all Waf errors"""
+	def __init__(self, msg='', ex=None):
+		"""
+		:param msg: error message
+		:type msg: string
+		:param ex: exception causing this error (optional)
+		:type ex: exception
+		"""
+		Exception.__init__(self)
+		self.msg = msg
+		assert not isinstance(msg, Exception)
+
+		self.stack = []
+		if ex:
+			if not msg:
+				self.msg = str(ex)
+			if isinstance(ex, WafError):
+				self.stack = ex.stack
+			else:
+				self.stack = traceback.extract_tb(sys.exc_info()[2])
+		self.stack += traceback.extract_stack()[:-1]
+		self.verbose_msg = ''.join(traceback.format_list(self.stack))
+
+	def __str__(self):
+		return str(self.msg)
+
+class BuildError(WafError):
+	"""Error raised during the build and install phases"""
+	def __init__(self, error_tasks=[]):
+		"""
+		:param error_tasks: tasks that could not complete normally
+		:type error_tasks: list of task objects
+		"""
+		self.tasks = error_tasks
+		WafError.__init__(self, self.format_error())
+
+	def format_error(self):
+		"""Formats the error messages from the tasks that failed"""
+		lst = ['Build failed']
+		for tsk in self.tasks:
+			txt = tsk.format_error()
+			if txt:
+				lst.append(txt)
+		return '\n'.join(lst)
+
+class ConfigurationError(WafError):
+	"""Configuration exception raised in particular by :py:meth:`waflib.Context.Context.fatal`"""
+	pass
+
+class TaskRescan(WafError):
+	"""Task-specific exception type signalling required signature recalculations"""
+	pass
+
+class TaskNotReady(WafError):
+	"""Task-specific exception type signalling that task signatures cannot be computed"""
+	pass
+
diff --git a/Logs.py b/Logs.py
new file mode 100644
index 0000000..2a47516
--- /dev/null
+++ b/Logs.py
@@ -0,0 +1,379 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+logging, colors, terminal width and pretty-print
+"""
+
+import os, re, traceback, sys
+from waflib import Utils, ansiterm
+
+if not os.environ.get('NOSYNC', False):
+	# synchronized output is nearly mandatory to prevent garbled output
+	if sys.stdout.isatty() and id(sys.stdout) == id(sys.__stdout__):
+		sys.stdout = ansiterm.AnsiTerm(sys.stdout)
+	if sys.stderr.isatty() and id(sys.stderr) == id(sys.__stderr__):
+		sys.stderr = ansiterm.AnsiTerm(sys.stderr)
+
+# import the logging module after since it holds a reference on sys.stderr
+# in case someone uses the root logger
+import logging
+
+LOG_FORMAT = os.environ.get('WAF_LOG_FORMAT', '%(asctime)s %(c1)s%(zone)s%(c2)s %(message)s')
+HOUR_FORMAT = os.environ.get('WAF_HOUR_FORMAT', '%H:%M:%S')
+
+zones = []
+"""
+See :py:class:`waflib.Logs.log_filter`
+"""
+
+verbose = 0
+"""
+Global verbosity level, see :py:func:`waflib.Logs.debug` and :py:func:`waflib.Logs.error`
+"""
+
+colors_lst = {
+'USE' : True,
+'BOLD'  :'\x1b[01;1m',
+'RED'   :'\x1b[01;31m',
+'GREEN' :'\x1b[32m',
+'YELLOW':'\x1b[33m',
+'PINK'  :'\x1b[35m',
+'BLUE'  :'\x1b[01;34m',
+'CYAN'  :'\x1b[36m',
+'GREY'  :'\x1b[37m',
+'NORMAL':'\x1b[0m',
+'cursor_on'  :'\x1b[?25h',
+'cursor_off' :'\x1b[?25l',
+}
+
+indicator = '\r\x1b[K%s%s%s'
+
+try:
+	unicode
+except NameError:
+	unicode = None
+
+def enable_colors(use):
+	"""
+	If *1* is given, then the system will perform a few verifications
+	before enabling colors, such as checking whether the interpreter
+	is running in a terminal. A value of zero will disable colors,
+	and a value above *1* will force colors.
+
+	:param use: whether to enable colors or not
+	:type use: integer
+	"""
+	if use == 1:
+		if not (sys.stderr.isatty() or sys.stdout.isatty()):
+			use = 0
+		if Utils.is_win32 and os.name != 'java':
+			term = os.environ.get('TERM', '') # has ansiterm
+		else:
+			term = os.environ.get('TERM', 'dumb')
+
+		if term in ('dumb', 'emacs'):
+			use = 0
+
+	if use >= 1:
+		os.environ['TERM'] = 'vt100'
+
+	colors_lst['USE'] = use
+
+# If console packages are available, replace the dummy function with a real
+# implementation
+try:
+	get_term_cols = ansiterm.get_term_cols
+except AttributeError:
+	def get_term_cols():
+		return 80
+
+get_term_cols.__doc__ = """
+	Returns the console width in characters.
+
+	:return: the number of characters per line
+	:rtype: int
+	"""
+
+def get_color(cl):
+	"""
+	Returns the ansi sequence corresponding to the given color name.
+	An empty string is returned when coloring is globally disabled.
+
+	:param cl: color name in capital letters
+	:type cl: string
+	"""
+	if colors_lst['USE']:
+		return colors_lst.get(cl, '')
+	return ''
+
+class color_dict(object):
+	"""attribute-based color access, eg: colors.PINK"""
+	def __getattr__(self, a):
+		return get_color(a)
+	def __call__(self, a):
+		return get_color(a)
+
+colors = color_dict()
+
+re_log = re.compile(r'(\w+): (.*)', re.M)
+class log_filter(logging.Filter):
+	"""
+	Waf logs are of the form 'name: message', and can be filtered by 'waf --zones=name'.
+	For example, the following::
+
+		from waflib import Logs
+		Logs.debug('test: here is a message')
+
+	Will be displayed only when executing::
+
+		$ waf --zones=test
+	"""
+	def __init__(self, name=''):
+		logging.Filter.__init__(self, name)
+
+	def filter(self, rec):
+		"""
+		Filters log records by zone and by logging level
+
+		:param rec: log entry
+		"""
+		rec.zone = rec.module
+		if rec.levelno >= logging.INFO:
+			return True
+
+		m = re_log.match(rec.msg)
+		if m:
+			rec.zone = m.group(1)
+			rec.msg = m.group(2)
+
+		if zones:
+			return getattr(rec, 'zone', '') in zones or '*' in zones
+		elif not verbose > 2:
+			return False
+		return True
+
+class log_handler(logging.StreamHandler):
+	"""Dispatches messages to stderr/stdout depending on the severity level"""
+	def emit(self, record):
+		"""
+		Delegates the functionality to :py:meth:`waflib.Log.log_handler.emit_override`
+		"""
+		# default implementation
+		try:
+			try:
+				self.stream = record.stream
+			except AttributeError:
+				if record.levelno >= logging.WARNING:
+					record.stream = self.stream = sys.stderr
+				else:
+					record.stream = self.stream = sys.stdout
+			self.emit_override(record)
+			self.flush()
+		except (KeyboardInterrupt, SystemExit):
+			raise
+		except: # from the python library -_-
+			self.handleError(record)
+
+	def emit_override(self, record, **kw):
+		"""
+		Writes the log record to the desired stream (stderr/stdout)
+		"""
+		self.terminator = getattr(record, 'terminator', '\n')
+		stream = self.stream
+		if unicode:
+			# python2
+			msg = self.formatter.format(record)
+			fs = '%s' + self.terminator
+			try:
+				if (isinstance(msg, unicode) and getattr(stream, 'encoding', None)):
+					fs = fs.decode(stream.encoding)
+					try:
+						stream.write(fs % msg)
+					except UnicodeEncodeError:
+						stream.write((fs % msg).encode(stream.encoding))
+				else:
+					stream.write(fs % msg)
+			except UnicodeError:
+				stream.write((fs % msg).encode('utf-8'))
+		else:
+			logging.StreamHandler.emit(self, record)
+
+class formatter(logging.Formatter):
+	"""Simple log formatter which handles colors"""
+	def __init__(self):
+		logging.Formatter.__init__(self, LOG_FORMAT, HOUR_FORMAT)
+
+	def format(self, rec):
+		"""
+		Formats records and adds colors as needed. The records do not get
+		a leading hour format if the logging level is above *INFO*.
+		"""
+		try:
+			msg = rec.msg.decode('utf-8')
+		except Exception:
+			msg = rec.msg
+
+		use = colors_lst['USE']
+		if (use == 1 and rec.stream.isatty()) or use == 2:
+
+			c1 = getattr(rec, 'c1', None)
+			if c1 is None:
+				c1 = ''
+				if rec.levelno >= logging.ERROR:
+					c1 = colors.RED
+				elif rec.levelno >= logging.WARNING:
+					c1 = colors.YELLOW
+				elif rec.levelno >= logging.INFO:
+					c1 = colors.GREEN
+			c2 = getattr(rec, 'c2', colors.NORMAL)
+			msg = '%s%s%s' % (c1, msg, c2)
+		else:
+			# remove single \r that make long lines in text files
+			# and other terminal commands
+			msg = re.sub(r'\r(?!\n)|\x1B\[(K|.*?(m|h|l))', '', msg)
+
+		if rec.levelno >= logging.INFO:
+			# the goal of this is to format without the leading "Logs, hour" prefix
+			if rec.args:
+				return msg % rec.args
+			return msg
+
+		rec.msg = msg
+		rec.c1 = colors.PINK
+		rec.c2 = colors.NORMAL
+		return logging.Formatter.format(self, rec)
+
+log = None
+"""global logger for Logs.debug, Logs.error, etc"""
+
+def debug(*k, **kw):
+	"""
+	Wraps logging.debug and discards messages if the verbosity level :py:attr:`waflib.Logs.verbose` ≤ 0
+	"""
+	if verbose:
+		k = list(k)
+		k[0] = k[0].replace('\n', ' ')
+		log.debug(*k, **kw)
+
+def error(*k, **kw):
+	"""
+	Wrap logging.errors, adds the stack trace when the verbosity level :py:attr:`waflib.Logs.verbose` ≥ 2
+	"""
+	log.error(*k, **kw)
+	if verbose > 2:
+		st = traceback.extract_stack()
+		if st:
+			st = st[:-1]
+			buf = []
+			for filename, lineno, name, line in st:
+				buf.append('  File %r, line %d, in %s' % (filename, lineno, name))
+				if line:
+					buf.append('	%s' % line.strip())
+			if buf:
+				log.error('\n'.join(buf))
+
+def warn(*k, **kw):
+	"""
+	Wraps logging.warn
+	"""
+	log.warn(*k, **kw)
+
+def info(*k, **kw):
+	"""
+	Wraps logging.info
+	"""
+	log.info(*k, **kw)
+
+def init_log():
+	"""
+	Initializes the logger :py:attr:`waflib.Logs.log`
+	"""
+	global log
+	log = logging.getLogger('waflib')
+	log.handlers = []
+	log.filters = []
+	hdlr = log_handler()
+	hdlr.setFormatter(formatter())
+	log.addHandler(hdlr)
+	log.addFilter(log_filter())
+	log.setLevel(logging.DEBUG)
+
+def make_logger(path, name):
+	"""
+	Creates a simple logger, which is often used to redirect the context command output::
+
+		from waflib import Logs
+		bld.logger = Logs.make_logger('test.log', 'build')
+		bld.check(header_name='sadlib.h', features='cxx cprogram', mandatory=False)
+
+		# have the file closed immediately
+		Logs.free_logger(bld.logger)
+
+		# stop logging
+		bld.logger = None
+
+	The method finalize() of the command will try to free the logger, if any
+
+	:param path: file name to write the log output to
+	:type path: string
+	:param name: logger name (loggers are reused)
+	:type name: string
+	"""
+	logger = logging.getLogger(name)
+	if sys.hexversion > 0x3000000:
+		encoding = sys.stdout.encoding
+	else:
+		encoding = None
+	hdlr = logging.FileHandler(path, 'w', encoding=encoding)
+	formatter = logging.Formatter('%(message)s')
+	hdlr.setFormatter(formatter)
+	logger.addHandler(hdlr)
+	logger.setLevel(logging.DEBUG)
+	return logger
+
+def make_mem_logger(name, to_log, size=8192):
+	"""
+	Creates a memory logger to avoid writing concurrently to the main logger
+	"""
+	from logging.handlers import MemoryHandler
+	logger = logging.getLogger(name)
+	hdlr = MemoryHandler(size, target=to_log)
+	formatter = logging.Formatter('%(message)s')
+	hdlr.setFormatter(formatter)
+	logger.addHandler(hdlr)
+	logger.memhandler = hdlr
+	logger.setLevel(logging.DEBUG)
+	return logger
+
+def free_logger(logger):
+	"""
+	Frees the resources held by the loggers created through make_logger or make_mem_logger.
+	This is used for file cleanup and for handler removal (logger objects are re-used).
+	"""
+	try:
+		for x in logger.handlers:
+			x.close()
+			logger.removeHandler(x)
+	except Exception:
+		pass
+
+def pprint(col, msg, label='', sep='\n'):
+	"""
+	Prints messages in color immediately on stderr::
+
+		from waflib import Logs
+		Logs.pprint('RED', 'Something bad just happened')
+
+	:param col: color name to use in :py:const:`Logs.colors_lst`
+	:type col: string
+	:param msg: message to display
+	:type msg: string or a value that can be printed by %s
+	:param label: a message to add after the colored output
+	:type label: string
+	:param sep: a string to append at the end (line separator)
+	:type sep: string
+	"""
+	info('%s%s%s %s', colors(col), msg, colors.NORMAL, label, extra={'terminator':sep})
+
diff --git a/Node.py b/Node.py
new file mode 100644
index 0000000..4ac1ea8
--- /dev/null
+++ b/Node.py
@@ -0,0 +1,970 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Node: filesystem structure
+
+#. Each file/folder is represented by exactly one node.
+
+#. Some potential class properties are stored on :py:class:`waflib.Build.BuildContext` : nodes to depend on, etc.
+   Unused class members can increase the `.wafpickle` file size sensibly.
+
+#. Node objects should never be created directly, use
+   the methods :py:func:`Node.make_node` or :py:func:`Node.find_node` for the low-level operations
+
+#. The methods :py:func:`Node.find_resource`, :py:func:`Node.find_dir` :py:func:`Node.find_or_declare` must be
+   used when a build context is present
+
+#. Each instance of :py:class:`waflib.Context.Context` has a unique :py:class:`Node` subclass required for serialization.
+   (:py:class:`waflib.Node.Nod3`, see the :py:class:`waflib.Context.Context` initializer). A reference to the context
+   owning a node is held as *self.ctx*
+"""
+
+import os, re, sys, shutil
+from waflib import Utils, Errors
+
+exclude_regs = '''
+**/*~
+**/#*#
+**/.#*
+**/%*%
+**/._*
+**/*.swp
+**/CVS
+**/CVS/**
+**/.cvsignore
+**/SCCS
+**/SCCS/**
+**/vssver.scc
+**/.svn
+**/.svn/**
+**/BitKeeper
+**/.git
+**/.git/**
+**/.gitignore
+**/.bzr
+**/.bzrignore
+**/.bzr/**
+**/.hg
+**/.hg/**
+**/_MTN
+**/_MTN/**
+**/.arch-ids
+**/{arch}
+**/_darcs
+**/_darcs/**
+**/.intlcache
+**/.DS_Store'''
+"""
+Ant patterns for files and folders to exclude while doing the
+recursive traversal in :py:meth:`waflib.Node.Node.ant_glob`
+"""
+
+def ant_matcher(s, ignorecase):
+	reflags = re.I if ignorecase else 0
+	ret = []
+	for x in Utils.to_list(s):
+		x = x.replace('\\', '/').replace('//', '/')
+		if x.endswith('/'):
+			x += '**'
+		accu = []
+		for k in x.split('/'):
+			if k == '**':
+				accu.append(k)
+			else:
+				k = k.replace('.', '[.]').replace('*','.*').replace('?', '.').replace('+', '\\+')
+				k = '^%s$' % k
+				try:
+					exp = re.compile(k, flags=reflags)
+				except Exception as e:
+					raise Errors.WafError('Invalid pattern: %s' % k, e)
+				else:
+					accu.append(exp)
+		ret.append(accu)
+	return ret
+
+def ant_sub_filter(name, nn):
+	ret = []
+	for lst in nn:
+		if not lst:
+			pass
+		elif lst[0] == '**':
+			ret.append(lst)
+			if len(lst) > 1:
+				if lst[1].match(name):
+					ret.append(lst[2:])
+			else:
+				ret.append([])
+		elif lst[0].match(name):
+			ret.append(lst[1:])
+	return ret
+
+def ant_sub_matcher(name, pats):
+	nacc = ant_sub_filter(name, pats[0])
+	nrej = ant_sub_filter(name, pats[1])
+	if [] in nrej:
+		nacc = []
+	return [nacc, nrej]
+
+class Node(object):
+	"""
+	This class is organized in two parts:
+
+	* The basic methods meant for filesystem access (compute paths, create folders, etc)
+	* The methods bound to a :py:class:`waflib.Build.BuildContext` (require ``bld.srcnode`` and ``bld.bldnode``)
+	"""
+
+	dict_class = dict
+	"""
+	Subclasses can provide a dict class to enable case insensitivity for example.
+	"""
+
+	__slots__ = ('name', 'parent', 'children', 'cache_abspath', 'cache_isdir')
+	def __init__(self, name, parent):
+		"""
+		.. note:: Use :py:func:`Node.make_node` or :py:func:`Node.find_node` instead of calling this constructor
+		"""
+		self.name = name
+		self.parent = parent
+		if parent:
+			if name in parent.children:
+				raise Errors.WafError('node %s exists in the parent files %r already' % (name, parent))
+			parent.children[name] = self
+
+	def __setstate__(self, data):
+		"Deserializes node information, used for persistence"
+		self.name = data[0]
+		self.parent = data[1]
+		if data[2] is not None:
+			# Issue 1480
+			self.children = self.dict_class(data[2])
+
+	def __getstate__(self):
+		"Serializes node information, used for persistence"
+		return (self.name, self.parent, getattr(self, 'children', None))
+
+	def __str__(self):
+		"""
+		String representation (abspath), for debugging purposes
+
+		:rtype: string
+		"""
+		return self.abspath()
+
+	def __repr__(self):
+		"""
+		String representation (abspath), for debugging purposes
+
+		:rtype: string
+		"""
+		return self.abspath()
+
+	def __copy__(self):
+		"""
+		Provided to prevent nodes from being copied
+
+		:raises: :py:class:`waflib.Errors.WafError`
+		"""
+		raise Errors.WafError('nodes are not supposed to be copied')
+
+	def read(self, flags='r', encoding='latin-1'):
+		"""
+		Reads and returns the contents of the file represented by this node, see :py:func:`waflib.Utils.readf`::
+
+			def build(bld):
+				bld.path.find_node('wscript').read()
+
+		:param flags: Open mode
+		:type  flags: string
+		:param encoding: encoding value for Python3
+		:type encoding: string
+		:rtype: string or bytes
+		:return: File contents
+		"""
+		return Utils.readf(self.abspath(), flags, encoding)
+
+	def write(self, data, flags='w', encoding='latin-1'):
+		"""
+		Writes data to the file represented by this node, see :py:func:`waflib.Utils.writef`::
+
+			def build(bld):
+				bld.path.make_node('foo.txt').write('Hello, world!')
+
+		:param data: data to write
+		:type  data: string
+		:param flags: Write mode
+		:type  flags: string
+		:param encoding: encoding value for Python3
+		:type encoding: string
+		"""
+		Utils.writef(self.abspath(), data, flags, encoding)
+
+	def read_json(self, convert=True, encoding='utf-8'):
+		"""
+		Reads and parses the contents of this node as JSON (Python ≥ 2.6)::
+
+			def build(bld):
+				bld.path.find_node('abc.json').read_json()
+
+		Note that this by default automatically decodes unicode strings on Python2, unlike what the Python JSON module does.
+
+		:type  convert: boolean
+		:param convert: Prevents decoding of unicode strings on Python2
+		:type  encoding: string
+		:param encoding: The encoding of the file to read. This default to UTF8 as per the JSON standard
+		:rtype: object
+		:return: Parsed file contents
+		"""
+		import json # Python 2.6 and up
+		object_pairs_hook = None
+		if convert and sys.hexversion < 0x3000000:
+			try:
+				_type = unicode
+			except NameError:
+				_type = str
+
+			def convert(value):
+				if isinstance(value, list):
+					return [convert(element) for element in value]
+				elif isinstance(value, _type):
+					return str(value)
+				else:
+					return value
+
+			def object_pairs(pairs):
+				return dict((str(pair[0]), convert(pair[1])) for pair in pairs)
+
+			object_pairs_hook = object_pairs
+
+		return json.loads(self.read(encoding=encoding), object_pairs_hook=object_pairs_hook)
+
+	def write_json(self, data, pretty=True):
+		"""
+		Writes a python object as JSON to disk (Python ≥ 2.6) as UTF-8 data (JSON standard)::
+
+			def build(bld):
+				bld.path.find_node('xyz.json').write_json(199)
+
+		:type  data: object
+		:param data: The data to write to disk
+		:type  pretty: boolean
+		:param pretty: Determines if the JSON will be nicely space separated
+		"""
+		import json # Python 2.6 and up
+		indent = 2
+		separators = (',', ': ')
+		sort_keys = pretty
+		newline = os.linesep
+		if not pretty:
+			indent = None
+			separators = (',', ':')
+			newline = ''
+		output = json.dumps(data, indent=indent, separators=separators, sort_keys=sort_keys) + newline
+		self.write(output, encoding='utf-8')
+
+	def exists(self):
+		"""
+		Returns whether the Node is present on the filesystem
+
+		:rtype: bool
+		"""
+		return os.path.exists(self.abspath())
+
+	def isdir(self):
+		"""
+		Returns whether the Node represents a folder
+
+		:rtype: bool
+		"""
+		return os.path.isdir(self.abspath())
+
+	def chmod(self, val):
+		"""
+		Changes the file/dir permissions::
+
+			def build(bld):
+				bld.path.chmod(493) # 0755
+		"""
+		os.chmod(self.abspath(), val)
+
+	def delete(self, evict=True):
+		"""
+		Removes the file/folder from the filesystem (equivalent to `rm -rf`), and remove this object from the Node tree.
+		Do not use this object after calling this method.
+		"""
+		try:
+			try:
+				if os.path.isdir(self.abspath()):
+					shutil.rmtree(self.abspath())
+				else:
+					os.remove(self.abspath())
+			except OSError:
+				if os.path.exists(self.abspath()):
+					raise
+		finally:
+			if evict:
+				self.evict()
+
+	def evict(self):
+		"""
+		Removes this node from the Node tree
+		"""
+		del self.parent.children[self.name]
+
+	def suffix(self):
+		"""
+		Returns the file rightmost extension, for example `a.b.c.d → .d`
+
+		:rtype: string
+		"""
+		k = max(0, self.name.rfind('.'))
+		return self.name[k:]
+
+	def height(self):
+		"""
+		Returns the depth in the folder hierarchy from the filesystem root or from all the file drives
+
+		:returns: filesystem depth
+		:rtype: integer
+		"""
+		d = self
+		val = -1
+		while d:
+			d = d.parent
+			val += 1
+		return val
+
+	def listdir(self):
+		"""
+		Lists the folder contents
+
+		:returns: list of file/folder names ordered alphabetically
+		:rtype: list of string
+		"""
+		lst = Utils.listdir(self.abspath())
+		lst.sort()
+		return lst
+
+	def mkdir(self):
+		"""
+		Creates a folder represented by this node. Intermediate folders are created as needed.
+
+		:raises: :py:class:`waflib.Errors.WafError` when the folder is missing
+		"""
+		if self.isdir():
+			return
+
+		try:
+			self.parent.mkdir()
+		except OSError:
+			pass
+
+		if self.name:
+			try:
+				os.makedirs(self.abspath())
+			except OSError:
+				pass
+
+			if not self.isdir():
+				raise Errors.WafError('Could not create the directory %r' % self)
+
+			try:
+				self.children
+			except AttributeError:
+				self.children = self.dict_class()
+
+	def find_node(self, lst):
+		"""
+		Finds a node on the file system (files or folders), and creates the corresponding Node objects if it exists
+
+		:param lst: relative path
+		:type lst: string or list of string
+		:returns: The corresponding Node object or None if no entry was found on the filesystem
+		:rtype: :py:class:´waflib.Node.Node´
+		"""
+
+		if isinstance(lst, str):
+			lst = [x for x in Utils.split_path(lst) if x and x != '.']
+
+		if lst and lst[0].startswith('\\\\') and not self.parent:
+			node = self.ctx.root.make_node(lst[0])
+			node.cache_isdir = True
+			return node.find_node(lst[1:])
+
+		cur = self
+		for x in lst:
+			if x == '..':
+				cur = cur.parent or cur
+				continue
+
+			try:
+				ch = cur.children
+			except AttributeError:
+				cur.children = self.dict_class()
+			else:
+				try:
+					cur = ch[x]
+					continue
+				except KeyError:
+					pass
+
+			# optimistic: create the node first then look if it was correct to do so
+			cur = self.__class__(x, cur)
+			if not cur.exists():
+				cur.evict()
+				return None
+
+		if not cur.exists():
+			cur.evict()
+			return None
+
+		return cur
+
+	def make_node(self, lst):
+		"""
+		Returns or creates a Node object corresponding to the input path without considering the filesystem.
+
+		:param lst: relative path
+		:type lst: string or list of string
+		:rtype: :py:class:´waflib.Node.Node´
+		"""
+		if isinstance(lst, str):
+			lst = [x for x in Utils.split_path(lst) if x and x != '.']
+
+		cur = self
+		for x in lst:
+			if x == '..':
+				cur = cur.parent or cur
+				continue
+
+			try:
+				cur = cur.children[x]
+			except AttributeError:
+				cur.children = self.dict_class()
+			except KeyError:
+				pass
+			else:
+				continue
+			cur = self.__class__(x, cur)
+		return cur
+
+	def search_node(self, lst):
+		"""
+		Returns a Node previously defined in the data structure. The filesystem is not considered.
+
+		:param lst: relative path
+		:type lst: string or list of string
+		:rtype: :py:class:´waflib.Node.Node´ or None if there is no entry in the Node datastructure
+		"""
+		if isinstance(lst, str):
+			lst = [x for x in Utils.split_path(lst) if x and x != '.']
+
+		cur = self
+		for x in lst:
+			if x == '..':
+				cur = cur.parent or cur
+			else:
+				try:
+					cur = cur.children[x]
+				except (AttributeError, KeyError):
+					return None
+		return cur
+
+	def path_from(self, node):
+		"""
+		Path of this node seen from the other::
+
+			def build(bld):
+				n1 = bld.path.find_node('foo/bar/xyz.txt')
+				n2 = bld.path.find_node('foo/stuff/')
+				n1.path_from(n2) # '../bar/xyz.txt'
+
+		:param node: path to use as a reference
+		:type node: :py:class:`waflib.Node.Node`
+		:returns: a relative path or an absolute one if that is better
+		:rtype: string
+		"""
+		c1 = self
+		c2 = node
+
+		c1h = c1.height()
+		c2h = c2.height()
+
+		lst = []
+		up = 0
+
+		while c1h > c2h:
+			lst.append(c1.name)
+			c1 = c1.parent
+			c1h -= 1
+
+		while c2h > c1h:
+			up += 1
+			c2 = c2.parent
+			c2h -= 1
+
+		while not c1 is c2:
+			lst.append(c1.name)
+			up += 1
+
+			c1 = c1.parent
+			c2 = c2.parent
+
+		if c1.parent:
+			lst.extend(['..'] * up)
+			lst.reverse()
+			return os.sep.join(lst) or '.'
+		else:
+			return self.abspath()
+
+	def abspath(self):
+		"""
+		Returns the absolute path. A cache is kept in the context as ``cache_node_abspath``
+
+		:rtype: string
+		"""
+		try:
+			return self.cache_abspath
+		except AttributeError:
+			pass
+		# think twice before touching this (performance + complexity + correctness)
+
+		if not self.parent:
+			val = os.sep
+		elif not self.parent.name:
+			val = os.sep + self.name
+		else:
+			val = self.parent.abspath() + os.sep + self.name
+		self.cache_abspath = val
+		return val
+
+	if Utils.is_win32:
+		def abspath(self):
+			try:
+				return self.cache_abspath
+			except AttributeError:
+				pass
+			if not self.parent:
+				val = ''
+			elif not self.parent.name:
+				val = self.name + os.sep
+			else:
+				val = self.parent.abspath().rstrip(os.sep) + os.sep + self.name
+			self.cache_abspath = val
+			return val
+
+	def is_child_of(self, node):
+		"""
+		Returns whether the object belongs to a subtree of the input node::
+
+			def build(bld):
+				node = bld.path.find_node('wscript')
+				node.is_child_of(bld.path) # True
+
+		:param node: path to use as a reference
+		:type node: :py:class:`waflib.Node.Node`
+		:rtype: bool
+		"""
+		p = self
+		diff = self.height() - node.height()
+		while diff > 0:
+			diff -= 1
+			p = p.parent
+		return p is node
+
+	def ant_iter(self, accept=None, maxdepth=25, pats=[], dir=False, src=True, remove=True, quiet=False):
+		"""
+		Recursive method used by :py:meth:`waflib.Node.ant_glob`.
+
+		:param accept: function used for accepting/rejecting a node, returns the patterns that can be still accepted in recursion
+		:type accept: function
+		:param maxdepth: maximum depth in the filesystem (25)
+		:type maxdepth: int
+		:param pats: list of patterns to accept and list of patterns to exclude
+		:type pats: tuple
+		:param dir: return folders too (False by default)
+		:type dir: bool
+		:param src: return files (True by default)
+		:type src: bool
+		:param remove: remove files/folders that do not exist (True by default)
+		:type remove: bool
+		:param quiet: disable build directory traversal warnings (verbose mode)
+		:type quiet: bool
+		:returns: A generator object to iterate from
+		:rtype: iterator
+		"""
+		dircont = self.listdir()
+		dircont.sort()
+
+		try:
+			lst = set(self.children.keys())
+		except AttributeError:
+			self.children = self.dict_class()
+		else:
+			if remove:
+				for x in lst - set(dircont):
+					self.children[x].evict()
+
+		for name in dircont:
+			npats = accept(name, pats)
+			if npats and npats[0]:
+				accepted = [] in npats[0]
+
+				node = self.make_node([name])
+
+				isdir = node.isdir()
+				if accepted:
+					if isdir:
+						if dir:
+							yield node
+					elif src:
+						yield node
+
+				if isdir:
+					node.cache_isdir = True
+					if maxdepth:
+						for k in node.ant_iter(accept=accept, maxdepth=maxdepth - 1, pats=npats, dir=dir, src=src, remove=remove, quiet=quiet):
+							yield k
+
+	def ant_glob(self, *k, **kw):
+		"""
+		Finds files across folders and returns Node objects:
+
+		* ``**/*`` find all files recursively
+		* ``**/*.class`` find all files ending by .class
+		* ``..`` find files having two dot characters
+
+		For example::
+
+			def configure(cfg):
+				# find all .cpp files
+				cfg.path.ant_glob('**/*.cpp')
+				# find particular files from the root filesystem (can be slow)
+				cfg.root.ant_glob('etc/*.txt')
+				# simple exclusion rule example
+				cfg.path.ant_glob('*.c*', excl=['*.c'], src=True, dir=False)
+
+		For more information about the patterns, consult http://ant.apache.org/manual/dirtasks.html
+		Please remember that the '..' sequence does not represent the parent directory::
+
+			def configure(cfg):
+				cfg.path.ant_glob('../*.h') # incorrect
+				cfg.path.parent.ant_glob('*.h') # correct
+
+		The Node structure is itself a filesystem cache, so certain precautions must
+		be taken while matching files in the build or installation phases.
+		Nodes objects that do have a corresponding file or folder are garbage-collected by default.
+		This garbage collection is usually required to prevent returning files that do not
+		exist anymore. Yet, this may also remove Node objects of files that are yet-to-be built.
+
+		This typically happens when trying to match files in the build directory,
+		but there are also cases when files are created in the source directory.
+		Run ``waf -v`` to display any warnings, and try consider passing ``remove=False``
+		when matching files in the build directory.
+
+		Since ant_glob can traverse both source and build folders, it is a best practice
+		to call this method only from the most specific build node::
+
+			def build(bld):
+				# traverses the build directory, may need ``remove=False``:
+				bld.path.ant_glob('project/dir/**/*.h')
+				# better, no accidental build directory traversal:
+				bld.path.find_node('project/dir').ant_glob('**/*.h') # best
+
+		In addition, files and folders are listed immediately. When matching files in the
+		build folders, consider passing ``generator=True`` so that the generator object
+		returned can defer computation to a later stage. For example::
+
+			def build(bld):
+				bld(rule='tar xvf ${SRC}', source='arch.tar')
+				bld.add_group()
+				gen = bld.bldnode.ant_glob("*.h", generator=True, remove=True)
+				# files will be listed only after the arch.tar is unpacked
+				bld(rule='ls ${SRC}', source=gen, name='XYZ')
+
+
+		:param incl: ant patterns or list of patterns to include
+		:type incl: string or list of strings
+		:param excl: ant patterns or list of patterns to exclude
+		:type excl: string or list of strings
+		:param dir: return folders too (False by default)
+		:type dir: bool
+		:param src: return files (True by default)
+		:type src: bool
+		:param maxdepth: maximum depth of recursion
+		:type maxdepth: int
+		:param ignorecase: ignore case while matching (False by default)
+		:type ignorecase: bool
+		:param generator: Whether to evaluate the Nodes lazily
+		:type generator: bool
+		:param remove: remove files/folders that do not exist (True by default)
+		:type remove: bool
+		:param quiet: disable build directory traversal warnings (verbose mode)
+		:type quiet: bool
+		:returns: The corresponding Node objects as a list or as a generator object (generator=True)
+		:rtype: by default, list of :py:class:`waflib.Node.Node` instances
+		"""
+		src = kw.get('src', True)
+		dir = kw.get('dir')
+		excl = kw.get('excl', exclude_regs)
+		incl = k and k[0] or kw.get('incl', '**')
+		remove = kw.get('remove', True)
+		maxdepth = kw.get('maxdepth', 25)
+		ignorecase = kw.get('ignorecase', False)
+		quiet = kw.get('quiet', False)
+		pats = (ant_matcher(incl, ignorecase), ant_matcher(excl, ignorecase))
+
+		if kw.get('generator'):
+			return Utils.lazy_generator(self.ant_iter, (ant_sub_matcher, maxdepth, pats, dir, src, remove, quiet))
+
+		it = self.ant_iter(ant_sub_matcher, maxdepth, pats, dir, src, remove, quiet)
+		if kw.get('flat'):
+			# returns relative paths as a space-delimited string
+			# prefer Node objects whenever possible
+			return ' '.join(x.path_from(self) for x in it)
+		return list(it)
+
+	# ----------------------------------------------------------------------------
+	# the methods below require the source/build folders (bld.srcnode/bld.bldnode)
+
+	def is_src(self):
+		"""
+		Returns True if the node is below the source directory. Note that ``!is_src() ≠ is_bld()``
+
+		:rtype: bool
+		"""
+		cur = self
+		x = self.ctx.srcnode
+		y = self.ctx.bldnode
+		while cur.parent:
+			if cur is y:
+				return False
+			if cur is x:
+				return True
+			cur = cur.parent
+		return False
+
+	def is_bld(self):
+		"""
+		Returns True if the node is below the build directory. Note that ``!is_bld() ≠ is_src()``
+
+		:rtype: bool
+		"""
+		cur = self
+		y = self.ctx.bldnode
+		while cur.parent:
+			if cur is y:
+				return True
+			cur = cur.parent
+		return False
+
+	def get_src(self):
+		"""
+		Returns the corresponding Node object in the source directory (or self if already
+		under the source directory). Use this method only if the purpose is to create
+		a Node object (this is common with folders but not with files, see ticket 1937)
+
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		cur = self
+		x = self.ctx.srcnode
+		y = self.ctx.bldnode
+		lst = []
+		while cur.parent:
+			if cur is y:
+				lst.reverse()
+				return x.make_node(lst)
+			if cur is x:
+				return self
+			lst.append(cur.name)
+			cur = cur.parent
+		return self
+
+	def get_bld(self):
+		"""
+		Return the corresponding Node object in the build directory (or self if already
+		under the build directory). Use this method only if the purpose is to create
+		a Node object (this is common with folders but not with files, see ticket 1937)
+
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		cur = self
+		x = self.ctx.srcnode
+		y = self.ctx.bldnode
+		lst = []
+		while cur.parent:
+			if cur is y:
+				return self
+			if cur is x:
+				lst.reverse()
+				return self.ctx.bldnode.make_node(lst)
+			lst.append(cur.name)
+			cur = cur.parent
+		# the file is external to the current project, make a fake root in the current build directory
+		lst.reverse()
+		if lst and Utils.is_win32 and len(lst[0]) == 2 and lst[0].endswith(':'):
+			lst[0] = lst[0][0]
+		return self.ctx.bldnode.make_node(['__root__'] + lst)
+
+	def find_resource(self, lst):
+		"""
+		Use this method in the build phase to find source files corresponding to the relative path given.
+
+		First it looks up the Node data structure to find any declared Node object in the build directory.
+		If None is found, it then considers the filesystem in the source directory.
+
+		:param lst: relative path
+		:type lst: string or list of string
+		:returns: the corresponding Node object or None
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		if isinstance(lst, str):
+			lst = [x for x in Utils.split_path(lst) if x and x != '.']
+
+		node = self.get_bld().search_node(lst)
+		if not node:
+			node = self.get_src().find_node(lst)
+		if node and node.isdir():
+			return None
+		return node
+
+	def find_or_declare(self, lst):
+		"""
+		Use this method in the build phase to declare output files which
+		are meant to be written in the build directory.
+
+		This method creates the Node object and its parent folder
+		as needed.
+
+		:param lst: relative path
+		:type lst: string or list of string
+		"""
+		if isinstance(lst, str) and os.path.isabs(lst):
+			node = self.ctx.root.make_node(lst)
+		else:
+			node = self.get_bld().make_node(lst)
+		node.parent.mkdir()
+		return node
+
+	def find_dir(self, lst):
+		"""
+		Searches for a folder on the filesystem (see :py:meth:`waflib.Node.Node.find_node`)
+
+		:param lst: relative path
+		:type lst: string or list of string
+		:returns: The corresponding Node object or None if there is no such folder
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		if isinstance(lst, str):
+			lst = [x for x in Utils.split_path(lst) if x and x != '.']
+
+		node = self.find_node(lst)
+		if node and not node.isdir():
+			return None
+		return node
+
+	# helpers for building things
+	def change_ext(self, ext, ext_in=None):
+		"""
+		Declares a build node with a distinct extension; this is uses :py:meth:`waflib.Node.Node.find_or_declare`
+
+		:return: A build node of the same path, but with a different extension
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		name = self.name
+		if ext_in is None:
+			k = name.rfind('.')
+			if k >= 0:
+				name = name[:k] + ext
+			else:
+				name = name + ext
+		else:
+			name = name[:- len(ext_in)] + ext
+
+		return self.parent.find_or_declare([name])
+
+	def bldpath(self):
+		"""
+		Returns the relative path seen from the build directory ``src/foo.cpp``
+
+		:rtype: string
+		"""
+		return self.path_from(self.ctx.bldnode)
+
+	def srcpath(self):
+		"""
+		Returns the relative path seen from the source directory ``../src/foo.cpp``
+
+		:rtype: string
+		"""
+		return self.path_from(self.ctx.srcnode)
+
+	def relpath(self):
+		"""
+		If a file in the build directory, returns :py:meth:`waflib.Node.Node.bldpath`,
+		else returns :py:meth:`waflib.Node.Node.srcpath`
+
+		:rtype: string
+		"""
+		cur = self
+		x = self.ctx.bldnode
+		while cur.parent:
+			if cur is x:
+				return self.bldpath()
+			cur = cur.parent
+		return self.srcpath()
+
+	def bld_dir(self):
+		"""
+		Equivalent to self.parent.bldpath()
+
+		:rtype: string
+		"""
+		return self.parent.bldpath()
+
+	def h_file(self):
+		"""
+		See :py:func:`waflib.Utils.h_file`
+
+		:return: a hash representing the file contents
+		:rtype: string or bytes
+		"""
+		return Utils.h_file(self.abspath())
+
+	def get_bld_sig(self):
+		"""
+		Returns a signature (see :py:meth:`waflib.Node.Node.h_file`) for the purpose
+		of build dependency calculation. This method uses a per-context cache.
+
+		:return: a hash representing the object contents
+		:rtype: string or bytes
+		"""
+		# previous behaviour can be set by returning self.ctx.node_sigs[self] when a build node
+		try:
+			cache = self.ctx.cache_sig
+		except AttributeError:
+			cache = self.ctx.cache_sig = {}
+		try:
+			ret = cache[self]
+		except KeyError:
+			p = self.abspath()
+			try:
+				ret = cache[self] = self.h_file()
+			except EnvironmentError:
+				if self.isdir():
+					# allow folders as build nodes, do not use the creation time
+					st = os.stat(p)
+					ret = cache[self] = Utils.h_list([p, st.st_ino, st.st_mode])
+					return ret
+				raise
+		return ret
+
+pickle_lock = Utils.threading.Lock()
+"""Lock mandatory for thread-safe node serialization"""
+
+class Nod3(Node):
+	"""Mandatory subclass for thread-safe node serialization"""
+	pass # do not remove
+
+
diff --git a/Options.py b/Options.py
new file mode 100644
index 0000000..ad802d4
--- /dev/null
+++ b/Options.py
@@ -0,0 +1,342 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Scott Newton, 2005 (scottn)
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+Support for waf command-line options
+
+Provides default and command-line options, as well the command
+that reads the ``options`` wscript function.
+"""
+
+import os, tempfile, optparse, sys, re
+from waflib import Logs, Utils, Context, Errors
+
+options = optparse.Values()
+"""
+A global dictionary representing user-provided command-line options::
+
+	$ waf --foo=bar
+"""
+
+commands = []
+"""
+List of commands to execute extracted from the command-line. This list
+is consumed during the execution by :py:func:`waflib.Scripting.run_commands`.
+"""
+
+envvars = []
+"""
+List of environment variable declarations placed after the Waf executable name.
+These are detected by searching for "=" in the remaining arguments.
+You probably do not want to use this.
+"""
+
+lockfile = os.environ.get('WAFLOCK', '.lock-waf_%s_build' % sys.platform)
+"""
+Name of the lock file that marks a project as configured
+"""
+
+class opt_parser(optparse.OptionParser):
+	"""
+	Command-line options parser.
+	"""
+	def __init__(self, ctx, allow_unknown=False):
+		optparse.OptionParser.__init__(self, conflict_handler='resolve', add_help_option=False,
+			version='waf %s (%s)' % (Context.WAFVERSION, Context.WAFREVISION))
+		self.formatter.width = Logs.get_term_cols()
+		self.ctx = ctx
+		self.allow_unknown = allow_unknown
+
+	def _process_args(self, largs, rargs, values):
+		"""
+		Custom _process_args to allow unknown options according to the allow_unknown status
+		"""
+		while rargs:
+			try:
+				optparse.OptionParser._process_args(self,largs,rargs,values)
+			except (optparse.BadOptionError, optparse.AmbiguousOptionError) as e:
+				if self.allow_unknown:
+					largs.append(e.opt_str)
+				else:
+					self.error(str(e))
+
+	def print_usage(self, file=None):
+		return self.print_help(file)
+
+	def get_usage(self):
+		"""
+		Builds the message to print on ``waf --help``
+
+		:rtype: string
+		"""
+		cmds_str = {}
+		for cls in Context.classes:
+			if not cls.cmd or cls.cmd == 'options' or cls.cmd.startswith( '_' ):
+				continue
+
+			s = cls.__doc__ or ''
+			cmds_str[cls.cmd] = s
+
+		if Context.g_module:
+			for (k, v) in Context.g_module.__dict__.items():
+				if k in ('options', 'init', 'shutdown'):
+					continue
+
+				if type(v) is type(Context.create_context):
+					if v.__doc__ and not k.startswith('_'):
+						cmds_str[k] = v.__doc__
+
+		just = 0
+		for k in cmds_str:
+			just = max(just, len(k))
+
+		lst = ['  %s: %s' % (k.ljust(just), v) for (k, v) in cmds_str.items()]
+		lst.sort()
+		ret = '\n'.join(lst)
+
+		return '''waf [commands] [options]
+
+Main commands (example: ./waf build -j4)
+%s
+''' % ret
+
+
+class OptionsContext(Context.Context):
+	"""
+	Collects custom options from wscript files and parses the command line.
+	Sets the global :py:const:`waflib.Options.commands` and :py:const:`waflib.Options.options` values.
+	"""
+	cmd = 'options'
+	fun = 'options'
+
+	def __init__(self, **kw):
+		super(OptionsContext, self).__init__(**kw)
+
+		self.parser = opt_parser(self)
+		"""Instance of :py:class:`waflib.Options.opt_parser`"""
+
+		self.option_groups = {}
+
+		jobs = self.jobs()
+		p = self.add_option
+		color = os.environ.get('NOCOLOR', '') and 'no' or 'auto'
+		if os.environ.get('CLICOLOR', '') == '0':
+			color = 'no'
+		elif os.environ.get('CLICOLOR_FORCE', '') == '1':
+			color = 'yes'
+		p('-c', '--color',    dest='colors',  default=color, action='store', help='whether to use colors (yes/no/auto) [default: auto]', choices=('yes', 'no', 'auto'))
+		p('-j', '--jobs',     dest='jobs',    default=jobs,  type='int', help='amount of parallel jobs (%r)' % jobs)
+		p('-k', '--keep',     dest='keep',    default=0,     action='count', help='continue despite errors (-kk to try harder)')
+		p('-v', '--verbose',  dest='verbose', default=0,     action='count', help='verbosity level -v -vv or -vvv [default: 0]')
+		p('--zones',          dest='zones',   default='',    action='store', help='debugging zones (task_gen, deps, tasks, etc)')
+		p('--profile',        dest='profile', default=0,     action='store_true', help=optparse.SUPPRESS_HELP)
+		p('--pdb',            dest='pdb',     default=0,     action='store_true', help=optparse.SUPPRESS_HELP)
+		p('-h', '--help',     dest='whelp',   default=0,     action='store_true', help="show this help message and exit")
+
+		gr = self.add_option_group('Configuration options')
+		self.option_groups['configure options'] = gr
+
+		gr.add_option('-o', '--out', action='store', default='', help='build dir for the project', dest='out')
+		gr.add_option('-t', '--top', action='store', default='', help='src dir for the project', dest='top')
+
+		gr.add_option('--no-lock-in-run', action='store_true', default='', help=optparse.SUPPRESS_HELP, dest='no_lock_in_run')
+		gr.add_option('--no-lock-in-out', action='store_true', default='', help=optparse.SUPPRESS_HELP, dest='no_lock_in_out')
+		gr.add_option('--no-lock-in-top', action='store_true', default='', help=optparse.SUPPRESS_HELP, dest='no_lock_in_top')
+
+		default_prefix = getattr(Context.g_module, 'default_prefix', os.environ.get('PREFIX'))
+		if not default_prefix:
+			if Utils.unversioned_sys_platform() == 'win32':
+				d = tempfile.gettempdir()
+				default_prefix = d[0].upper() + d[1:]
+				# win32 preserves the case, but gettempdir does not
+			else:
+				default_prefix = '/usr/local/'
+		gr.add_option('--prefix', dest='prefix', default=default_prefix, help='installation prefix [default: %r]' % default_prefix)
+		gr.add_option('--bindir', dest='bindir', help='bindir')
+		gr.add_option('--libdir', dest='libdir', help='libdir')
+
+		gr = self.add_option_group('Build and installation options')
+		self.option_groups['build and install options'] = gr
+		gr.add_option('-p', '--progress', dest='progress_bar', default=0, action='count', help= '-p: progress bar; -pp: ide output')
+		gr.add_option('--targets',        dest='targets', default='', action='store', help='task generators, e.g. "target1,target2"')
+
+		gr = self.add_option_group('Step options')
+		self.option_groups['step options'] = gr
+		gr.add_option('--files',          dest='files', default='', action='store', help='files to process, by regexp, e.g. "*/main.c,*/test/main.o"')
+
+		default_destdir = os.environ.get('DESTDIR', '')
+
+		gr = self.add_option_group('Installation and uninstallation options')
+		self.option_groups['install/uninstall options'] = gr
+		gr.add_option('--destdir', help='installation root [default: %r]' % default_destdir, default=default_destdir, dest='destdir')
+		gr.add_option('-f', '--force', dest='force', default=False, action='store_true', help='force file installation')
+		gr.add_option('--distcheck-args', metavar='ARGS', help='arguments to pass to distcheck', default=None, action='store')
+
+	def jobs(self):
+		"""
+		Finds the optimal amount of cpu cores to use for parallel jobs.
+		At runtime the options can be obtained from :py:const:`waflib.Options.options` ::
+
+			from waflib.Options import options
+			njobs = options.jobs
+
+		:return: the amount of cpu cores
+		:rtype: int
+		"""
+		count = int(os.environ.get('JOBS', 0))
+		if count < 1:
+			if 'NUMBER_OF_PROCESSORS' in os.environ:
+				# on Windows, use the NUMBER_OF_PROCESSORS environment variable
+				count = int(os.environ.get('NUMBER_OF_PROCESSORS', 1))
+			else:
+				# on everything else, first try the POSIX sysconf values
+				if hasattr(os, 'sysconf_names'):
+					if 'SC_NPROCESSORS_ONLN' in os.sysconf_names:
+						count = int(os.sysconf('SC_NPROCESSORS_ONLN'))
+					elif 'SC_NPROCESSORS_CONF' in os.sysconf_names:
+						count = int(os.sysconf('SC_NPROCESSORS_CONF'))
+				if not count and os.name not in ('nt', 'java'):
+					try:
+						tmp = self.cmd_and_log(['sysctl', '-n', 'hw.ncpu'], quiet=0)
+					except Errors.WafError:
+						pass
+					else:
+						if re.match('^[0-9]+$', tmp):
+							count = int(tmp)
+		if count < 1:
+			count = 1
+		elif count > 1024:
+			count = 1024
+		return count
+
+	def add_option(self, *k, **kw):
+		"""
+		Wraps ``optparse.add_option``::
+
+			def options(ctx):
+				ctx.add_option('-u', '--use', dest='use', default=False,
+					action='store_true', help='a boolean option')
+
+		:rtype: optparse option object
+		"""
+		return self.parser.add_option(*k, **kw)
+
+	def add_option_group(self, *k, **kw):
+		"""
+		Wraps ``optparse.add_option_group``::
+
+			def options(ctx):
+				gr = ctx.add_option_group('some options')
+				gr.add_option('-u', '--use', dest='use', default=False, action='store_true')
+
+		:rtype: optparse option group object
+		"""
+		try:
+			gr = self.option_groups[k[0]]
+		except KeyError:
+			gr = self.parser.add_option_group(*k, **kw)
+		self.option_groups[k[0]] = gr
+		return gr
+
+	def get_option_group(self, opt_str):
+		"""
+		Wraps ``optparse.get_option_group``::
+
+			def options(ctx):
+				gr = ctx.get_option_group('configure options')
+				gr.add_option('-o', '--out', action='store', default='',
+					help='build dir for the project', dest='out')
+
+		:rtype: optparse option group object
+		"""
+		try:
+			return self.option_groups[opt_str]
+		except KeyError:
+			for group in self.parser.option_groups:
+				if group.title == opt_str:
+					return group
+			return None
+
+	def sanitize_path(self, path, cwd=None):
+		if not cwd:
+			cwd = Context.launch_dir
+		p = os.path.expanduser(path)
+		p = os.path.join(cwd, p)
+		p = os.path.normpath(p)
+		p = os.path.abspath(p)
+		return p
+
+	def parse_cmd_args(self, _args=None, cwd=None, allow_unknown=False):
+		"""
+		Just parse the arguments
+		"""
+		self.parser.allow_unknown = allow_unknown
+		(options, leftover_args) = self.parser.parse_args(args=_args)
+		envvars = []
+		commands = []
+		for arg in leftover_args:
+			if '=' in arg:
+				envvars.append(arg)
+			elif arg != 'options':
+				commands.append(arg)
+
+		for name in 'top out destdir prefix bindir libdir'.split():
+			# those paths are usually expanded from Context.launch_dir
+			if getattr(options, name, None):
+				path = self.sanitize_path(getattr(options, name), cwd)
+				setattr(options, name, path)
+		return options, commands, envvars
+
+	def init_module_vars(self, arg_options, arg_commands, arg_envvars):
+		options.__dict__.clear()
+		del commands[:]
+		del envvars[:]
+
+		options.__dict__.update(arg_options.__dict__)
+		commands.extend(arg_commands)
+		envvars.extend(arg_envvars)
+
+		for var in envvars:
+			(name, value) = var.split('=', 1)
+			os.environ[name.strip()] = value
+
+	def init_logs(self, options, commands, envvars):
+		Logs.verbose = options.verbose
+		if options.verbose >= 1:
+			self.load('errcheck')
+
+		colors = {'yes' : 2, 'auto' : 1, 'no' : 0}[options.colors]
+		Logs.enable_colors(colors)
+
+		if options.zones:
+			Logs.zones = options.zones.split(',')
+			if not Logs.verbose:
+				Logs.verbose = 1
+		elif Logs.verbose > 0:
+			Logs.zones = ['runner']
+		if Logs.verbose > 2:
+			Logs.zones = ['*']
+
+	def parse_args(self, _args=None):
+		"""
+		Parses arguments from a list which is not necessarily the command-line.
+		Initializes the module variables options, commands and envvars
+		If help is requested, prints it and exit the application
+
+		:param _args: arguments
+		:type _args: list of strings
+		"""
+		options, commands, envvars = self.parse_cmd_args()
+		self.init_logs(options, commands, envvars)
+		self.init_module_vars(options, commands, envvars)
+
+	def execute(self):
+		"""
+		See :py:func:`waflib.Context.Context.execute`
+		"""
+		super(OptionsContext, self).execute()
+		self.parse_args()
+		Utils.alloc_process_pool(options.jobs)
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c5361b9
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+Autowaf
+=======
+
+This is autowaf, a bundle of waf and a few extensions intended to be easy to
+use directly as source code in a project.  Using this as a submodule or subtree
+named `waflib` in a project allows waf to be used without including binary
+encoded data in the waf script.  This gets along with revision control and
+distributions better, among other advantages, without losing
+self-containedness.
+
+To use this in a project, add this repository as a directory named `waflib` in
+the top level of the project, and link or copy `waf` to the top level.
+
+Two waf extras are also included: `autowaf.py` and `lv2.py`.
+
+The `autowaf.py` module is a kitchen sink of Python utilities for building
+consistent packages, and can be imported in a wcript as
+`waflib.extras.autowaf`.
+
+The `lv2.py` extra defines options for LV2 plugin installation paths.  It can
+be used by calling `opt.load('lv2')` and `conf.load('lv2')` in the appropriate
+locations in a wscript.
+
+ -- David Robillard <d@drobilla.net>
diff --git a/Runner.py b/Runner.py
new file mode 100644
index 0000000..261084d
--- /dev/null
+++ b/Runner.py
@@ -0,0 +1,611 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Runner.py: Task scheduling and execution
+"""
+
+import heapq, traceback
+try:
+	from queue import Queue, PriorityQueue
+except ImportError:
+	from Queue import Queue
+	try:
+		from Queue import PriorityQueue
+	except ImportError:
+		class PriorityQueue(Queue):
+			def _init(self, maxsize):
+				self.maxsize = maxsize
+				self.queue = []
+			def _put(self, item):
+				heapq.heappush(self.queue, item)
+			def _get(self):
+				return heapq.heappop(self.queue)
+
+from waflib import Utils, Task, Errors, Logs
+
+GAP = 5
+"""
+Wait for at least ``GAP * njobs`` before trying to enqueue more tasks to run
+"""
+
+class PriorityTasks(object):
+	def __init__(self):
+		self.lst = []
+	def __len__(self):
+		return len(self.lst)
+	def __iter__(self):
+		return iter(self.lst)
+	def clear(self):
+		self.lst = []
+	def append(self, task):
+		heapq.heappush(self.lst, task)
+	def appendleft(self, task):
+		"Deprecated, do not use"
+		heapq.heappush(self.lst, task)
+	def pop(self):
+		return heapq.heappop(self.lst)
+	def extend(self, lst):
+		if self.lst:
+			for x in lst:
+				self.append(x)
+		else:
+			if isinstance(lst, list):
+				self.lst = lst
+				heapq.heapify(lst)
+			else:
+				self.lst = lst.lst
+
+class Consumer(Utils.threading.Thread):
+	"""
+	Daemon thread object that executes a task. It shares a semaphore with
+	the coordinator :py:class:`waflib.Runner.Spawner`. There is one
+	instance per task to consume.
+	"""
+	def __init__(self, spawner, task):
+		Utils.threading.Thread.__init__(self)
+		self.task = task
+		"""Task to execute"""
+		self.spawner = spawner
+		"""Coordinator object"""
+		self.setDaemon(1)
+		self.start()
+	def run(self):
+		"""
+		Processes a single task
+		"""
+		try:
+			if not self.spawner.master.stop:
+				self.spawner.master.process_task(self.task)
+		finally:
+			self.spawner.sem.release()
+			self.spawner.master.out.put(self.task)
+			self.task = None
+			self.spawner = None
+
+class Spawner(Utils.threading.Thread):
+	"""
+	Daemon thread that consumes tasks from :py:class:`waflib.Runner.Parallel` producer and
+	spawns a consuming thread :py:class:`waflib.Runner.Consumer` for each
+	:py:class:`waflib.Task.Task` instance.
+	"""
+	def __init__(self, master):
+		Utils.threading.Thread.__init__(self)
+		self.master = master
+		""":py:class:`waflib.Runner.Parallel` producer instance"""
+		self.sem = Utils.threading.Semaphore(master.numjobs)
+		"""Bounded semaphore that prevents spawning more than *n* concurrent consumers"""
+		self.setDaemon(1)
+		self.start()
+	def run(self):
+		"""
+		Spawns new consumers to execute tasks by delegating to :py:meth:`waflib.Runner.Spawner.loop`
+		"""
+		try:
+			self.loop()
+		except Exception:
+			# Python 2 prints unnecessary messages when shutting down
+			# we also want to stop the thread properly
+			pass
+	def loop(self):
+		"""
+		Consumes task objects from the producer; ends when the producer has no more
+		task to provide.
+		"""
+		master = self.master
+		while 1:
+			task = master.ready.get()
+			self.sem.acquire()
+			if not master.stop:
+				task.log_display(task.generator.bld)
+			Consumer(self, task)
+
+class Parallel(object):
+	"""
+	Schedule the tasks obtained from the build context for execution.
+	"""
+	def __init__(self, bld, j=2):
+		"""
+		The initialization requires a build context reference
+		for computing the total number of jobs.
+		"""
+
+		self.numjobs = j
+		"""
+		Amount of parallel consumers to use
+		"""
+
+		self.bld = bld
+		"""
+		Instance of :py:class:`waflib.Build.BuildContext`
+		"""
+
+		self.outstanding = PriorityTasks()
+		"""Heap of :py:class:`waflib.Task.Task` that may be ready to be executed"""
+
+		self.postponed = PriorityTasks()
+		"""Heap of :py:class:`waflib.Task.Task` which are not ready to run for non-DAG reasons"""
+
+		self.incomplete = set()
+		"""List of :py:class:`waflib.Task.Task` waiting for dependent tasks to complete (DAG)"""
+
+		self.ready = PriorityQueue(0)
+		"""List of :py:class:`waflib.Task.Task` ready to be executed by consumers"""
+
+		self.out = Queue(0)
+		"""List of :py:class:`waflib.Task.Task` returned by the task consumers"""
+
+		self.count = 0
+		"""Amount of tasks that may be processed by :py:class:`waflib.Runner.TaskConsumer`"""
+
+		self.processed = 0
+		"""Amount of tasks processed"""
+
+		self.stop = False
+		"""Error flag to stop the build"""
+
+		self.error = []
+		"""Tasks that could not be executed"""
+
+		self.biter = None
+		"""Task iterator which must give groups of parallelizable tasks when calling ``next()``"""
+
+		self.dirty = False
+		"""
+		Flag that indicates that the build cache must be saved when a task was executed
+		(calls :py:meth:`waflib.Build.BuildContext.store`)"""
+
+		self.revdeps = Utils.defaultdict(set)
+		"""
+		The reverse dependency graph of dependencies obtained from Task.run_after
+		"""
+
+		self.spawner = Spawner(self)
+		"""
+		Coordinating daemon thread that spawns thread consumers
+		"""
+
+	def get_next_task(self):
+		"""
+		Obtains the next Task instance to run
+
+		:rtype: :py:class:`waflib.Task.Task`
+		"""
+		if not self.outstanding:
+			return None
+		return self.outstanding.pop()
+
+	def postpone(self, tsk):
+		"""
+		Adds the task to the list :py:attr:`waflib.Runner.Parallel.postponed`.
+		The order is scrambled so as to consume as many tasks in parallel as possible.
+
+		:param tsk: task instance
+		:type tsk: :py:class:`waflib.Task.Task`
+		"""
+		self.postponed.append(tsk)
+
+	def refill_task_list(self):
+		"""
+		Pulls a next group of tasks to execute in :py:attr:`waflib.Runner.Parallel.outstanding`.
+		Ensures that all tasks in the current build group are complete before processing the next one.
+		"""
+		while self.count > self.numjobs * GAP:
+			self.get_out()
+
+		while not self.outstanding:
+			if self.count:
+				self.get_out()
+				if self.outstanding:
+					break
+			elif self.postponed:
+				try:
+					cond = self.deadlock == self.processed
+				except AttributeError:
+					pass
+				else:
+					if cond:
+						# The most common reason is conflicting build order declaration
+						# for example: "X run_after Y" and "Y run_after X"
+						# Another can be changing "run_after" dependencies while the build is running
+						# for example: updating "tsk.run_after" in the "runnable_status" method
+						lst = []
+						for tsk in self.postponed:
+							deps = [id(x) for x in tsk.run_after if not x.hasrun]
+							lst.append('%s\t-> %r' % (repr(tsk), deps))
+							if not deps:
+								lst.append('\n  task %r dependencies are done, check its *runnable_status*?' % id(tsk))
+						raise Errors.WafError('Deadlock detected: check the task build order%s' % ''.join(lst))
+				self.deadlock = self.processed
+
+			if self.postponed:
+				self.outstanding.extend(self.postponed)
+				self.postponed.clear()
+			elif not self.count:
+				if self.incomplete:
+					for x in self.incomplete:
+						for k in x.run_after:
+							if not k.hasrun:
+								break
+						else:
+							# dependency added after the build started without updating revdeps
+							self.incomplete.remove(x)
+							self.outstanding.append(x)
+							break
+					else:
+						raise Errors.WafError('Broken revdeps detected on %r' % self.incomplete)
+				else:
+					tasks = next(self.biter)
+					ready, waiting = self.prio_and_split(tasks)
+					self.outstanding.extend(ready)
+					self.incomplete.update(waiting)
+					self.total = self.bld.total()
+					break
+
+	def add_more_tasks(self, tsk):
+		"""
+		If a task provides :py:attr:`waflib.Task.Task.more_tasks`, then the tasks contained
+		in that list are added to the current build and will be processed before the next build group.
+
+		The priorities for dependent tasks are not re-calculated globally
+
+		:param tsk: task instance
+		:type tsk: :py:attr:`waflib.Task.Task`
+		"""
+		if getattr(tsk, 'more_tasks', None):
+			more = set(tsk.more_tasks)
+			groups_done = set()
+			def iteri(a, b):
+				for x in a:
+					yield x
+				for x in b:
+					yield x
+
+			# Update the dependency tree
+			# this assumes that task.run_after values were updated
+			for x in iteri(self.outstanding, self.incomplete):
+				for k in x.run_after:
+					if isinstance(k, Task.TaskGroup):
+						if k not in groups_done:
+							groups_done.add(k)
+							for j in k.prev & more:
+								self.revdeps[j].add(k)
+					elif k in more:
+						self.revdeps[k].add(x)
+
+			ready, waiting = self.prio_and_split(tsk.more_tasks)
+			self.outstanding.extend(ready)
+			self.incomplete.update(waiting)
+			self.total += len(tsk.more_tasks)
+
+	def mark_finished(self, tsk):
+		def try_unfreeze(x):
+			# DAG ancestors are likely to be in the incomplete set
+			# This assumes that the run_after contents have not changed
+			# after the build starts, else a deadlock may occur
+			if x in self.incomplete:
+				# TODO remove dependencies to free some memory?
+				# x.run_after.remove(tsk)
+				for k in x.run_after:
+					if not k.hasrun:
+						break
+				else:
+					self.incomplete.remove(x)
+					self.outstanding.append(x)
+
+		if tsk in self.revdeps:
+			for x in self.revdeps[tsk]:
+				if isinstance(x, Task.TaskGroup):
+					x.prev.remove(tsk)
+					if not x.prev:
+						for k in x.next:
+							# TODO necessary optimization?
+							k.run_after.remove(x)
+							try_unfreeze(k)
+						# TODO necessary optimization?
+						x.next = []
+				else:
+					try_unfreeze(x)
+			del self.revdeps[tsk]
+
+		if hasattr(tsk, 'semaphore'):
+			sem = tsk.semaphore
+			sem.release(tsk)
+			while sem.waiting and not sem.is_locked():
+				# take a frozen task, make it ready to run
+				x = sem.waiting.pop()
+				self._add_task(x)
+
+	def get_out(self):
+		"""
+		Waits for a Task that task consumers add to :py:attr:`waflib.Runner.Parallel.out` after execution.
+		Adds more Tasks if necessary through :py:attr:`waflib.Runner.Parallel.add_more_tasks`.
+
+		:rtype: :py:attr:`waflib.Task.Task`
+		"""
+		tsk = self.out.get()
+		if not self.stop:
+			self.add_more_tasks(tsk)
+		self.mark_finished(tsk)
+
+		self.count -= 1
+		self.dirty = True
+		return tsk
+
+	def add_task(self, tsk):
+		"""
+		Enqueue a Task to :py:attr:`waflib.Runner.Parallel.ready` so that consumers can run them.
+
+		:param tsk: task instance
+		:type tsk: :py:attr:`waflib.Task.Task`
+		"""
+		# TODO change in waf 2.1
+		self.ready.put(tsk)
+
+	def _add_task(self, tsk):
+		if hasattr(tsk, 'semaphore'):
+			sem = tsk.semaphore
+			try:
+				sem.acquire(tsk)
+			except IndexError:
+				sem.waiting.add(tsk)
+				return
+
+		self.count += 1
+		self.processed += 1
+		if self.numjobs == 1:
+			tsk.log_display(tsk.generator.bld)
+			try:
+				self.process_task(tsk)
+			finally:
+				self.out.put(tsk)
+		else:
+			self.add_task(tsk)
+
+	def process_task(self, tsk):
+		"""
+		Processes a task and attempts to stop the build in case of errors
+		"""
+		tsk.process()
+		if tsk.hasrun != Task.SUCCESS:
+			self.error_handler(tsk)
+
+	def skip(self, tsk):
+		"""
+		Mark a task as skipped/up-to-date
+		"""
+		tsk.hasrun = Task.SKIPPED
+		self.mark_finished(tsk)
+
+	def cancel(self, tsk):
+		"""
+		Mark a task as failed because of unsatisfiable dependencies
+		"""
+		tsk.hasrun = Task.CANCELED
+		self.mark_finished(tsk)
+
+	def error_handler(self, tsk):
+		"""
+		Called when a task cannot be executed. The flag :py:attr:`waflib.Runner.Parallel.stop` is set,
+		unless the build is executed with::
+
+			$ waf build -k
+
+		:param tsk: task instance
+		:type tsk: :py:attr:`waflib.Task.Task`
+		"""
+		if not self.bld.keep:
+			self.stop = True
+		self.error.append(tsk)
+
+	def task_status(self, tsk):
+		"""
+		Obtains the task status to decide whether to run it immediately or not.
+
+		:return: the exit status, for example :py:attr:`waflib.Task.ASK_LATER`
+		:rtype: integer
+		"""
+		try:
+			return tsk.runnable_status()
+		except Exception:
+			self.processed += 1
+			tsk.err_msg = traceback.format_exc()
+			if not self.stop and self.bld.keep:
+				self.skip(tsk)
+				if self.bld.keep == 1:
+					# if -k stop on the first exception, if -kk try to go as far as possible
+					if Logs.verbose > 1 or not self.error:
+						self.error.append(tsk)
+					self.stop = True
+				else:
+					if Logs.verbose > 1:
+						self.error.append(tsk)
+				return Task.EXCEPTION
+
+			tsk.hasrun = Task.EXCEPTION
+			self.error_handler(tsk)
+
+			return Task.EXCEPTION
+
+	def start(self):
+		"""
+		Obtains Task instances from the BuildContext instance and adds the ones that need to be executed to
+		:py:class:`waflib.Runner.Parallel.ready` so that the :py:class:`waflib.Runner.Spawner` consumer thread
+		has them executed. Obtains the executed Tasks back from :py:class:`waflib.Runner.Parallel.out`
+		and marks the build as failed by setting the ``stop`` flag.
+		If only one job is used, then executes the tasks one by one, without consumers.
+		"""
+		self.total = self.bld.total()
+
+		while not self.stop:
+
+			self.refill_task_list()
+
+			# consider the next task
+			tsk = self.get_next_task()
+			if not tsk:
+				if self.count:
+					# tasks may add new ones after they are run
+					continue
+				else:
+					# no tasks to run, no tasks running, time to exit
+					break
+
+			if tsk.hasrun:
+				# if the task is marked as "run", just skip it
+				self.processed += 1
+				continue
+
+			if self.stop: # stop immediately after a failure is detected
+				break
+
+			st = self.task_status(tsk)
+			if st == Task.RUN_ME:
+				self._add_task(tsk)
+			elif st == Task.ASK_LATER:
+				self.postpone(tsk)
+			elif st == Task.SKIP_ME:
+				self.processed += 1
+				self.skip(tsk)
+				self.add_more_tasks(tsk)
+			elif st == Task.CANCEL_ME:
+				# A dependency problem has occurred, and the
+				# build is most likely run with `waf -k`
+				if Logs.verbose > 1:
+					self.error.append(tsk)
+				self.processed += 1
+				self.cancel(tsk)
+
+		# self.count represents the tasks that have been made available to the consumer threads
+		# collect all the tasks after an error else the message may be incomplete
+		while self.error and self.count:
+			self.get_out()
+
+		self.ready.put(None)
+		if not self.stop:
+			assert not self.count
+			assert not self.postponed
+			assert not self.incomplete
+
+	def prio_and_split(self, tasks):
+		"""
+		Label input tasks with priority values, and return a pair containing
+		the tasks that are ready to run and the tasks that are necessarily
+		waiting for other tasks to complete.
+
+		The priority system is really meant as an optional layer for optimization:
+		dependency cycles are found quickly, and builds should be more efficient.
+		A high priority number means that a task is processed first.
+
+		This method can be overridden to disable the priority system::
+
+			def prio_and_split(self, tasks):
+				return tasks, []
+
+		:return: A pair of task lists
+		:rtype: tuple
+		"""
+		# to disable:
+		#return tasks, []
+		for x in tasks:
+			x.visited = 0
+
+		reverse = self.revdeps
+
+		groups_done = set()
+		for x in tasks:
+			for k in x.run_after:
+				if isinstance(k, Task.TaskGroup):
+					if k not in groups_done:
+						groups_done.add(k)
+						for j in k.prev:
+							reverse[j].add(k)
+				else:
+					reverse[k].add(x)
+
+		# the priority number is not the tree depth
+		def visit(n):
+			if isinstance(n, Task.TaskGroup):
+				return sum(visit(k) for k in n.next)
+
+			if n.visited == 0:
+				n.visited = 1
+
+				if n in reverse:
+					rev = reverse[n]
+					n.prio_order = n.tree_weight + len(rev) + sum(visit(k) for k in rev)
+				else:
+					n.prio_order = n.tree_weight
+
+				n.visited = 2
+			elif n.visited == 1:
+				raise Errors.WafError('Dependency cycle found!')
+			return n.prio_order
+
+		for x in tasks:
+			if x.visited != 0:
+				# must visit all to detect cycles
+				continue
+			try:
+				visit(x)
+			except Errors.WafError:
+				self.debug_cycles(tasks, reverse)
+
+		ready = []
+		waiting = []
+		for x in tasks:
+			for k in x.run_after:
+				if not k.hasrun:
+					waiting.append(x)
+					break
+			else:
+				ready.append(x)
+		return (ready, waiting)
+
+	def debug_cycles(self, tasks, reverse):
+		tmp = {}
+		for x in tasks:
+			tmp[x] = 0
+
+		def visit(n, acc):
+			if isinstance(n, Task.TaskGroup):
+				for k in n.next:
+					visit(k, acc)
+				return
+			if tmp[n] == 0:
+				tmp[n] = 1
+				for k in reverse.get(n, []):
+					visit(k, [n] + acc)
+				tmp[n] = 2
+			elif tmp[n] == 1:
+				lst = []
+				for tsk in acc:
+					lst.append(repr(tsk))
+					if tsk is n:
+						# exclude prior nodes, we want the minimum cycle
+						break
+				raise Errors.WafError('Task dependency cycle in "run_after" constraints: %s' % ''.join(lst))
+		for x in tasks:
+			visit(x, [])
+
diff --git a/Scripting.py b/Scripting.py
new file mode 100644
index 0000000..749d4f2
--- /dev/null
+++ b/Scripting.py
@@ -0,0 +1,614 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"Module called for configuring, compiling and installing targets"
+
+from __future__ import with_statement
+
+import os, shlex, shutil, traceback, errno, sys, stat
+from waflib import Utils, Configure, Logs, Options, ConfigSet, Context, Errors, Build, Node
+
+build_dir_override = None
+
+no_climb_commands = ['configure']
+
+default_cmd = "build"
+
+def waf_entry_point(current_directory, version, wafdir):
+	"""
+	This is the main entry point, all Waf execution starts here.
+
+	:param current_directory: absolute path representing the current directory
+	:type current_directory: string
+	:param version: version number
+	:type version: string
+	:param wafdir: absolute path representing the directory of the waf library
+	:type wafdir: string
+	"""
+	Logs.init_log()
+
+	if Context.WAFVERSION != version:
+		Logs.error('Waf script %r and library %r do not match (directory %r)', version, Context.WAFVERSION, wafdir)
+		sys.exit(1)
+
+	# Store current directory before any chdir
+	Context.waf_dir = wafdir
+	Context.run_dir = Context.launch_dir = current_directory
+	start_dir = current_directory
+	no_climb = os.environ.get('NOCLIMB')
+
+	if len(sys.argv) > 1:
+		# os.path.join handles absolute paths
+		# if sys.argv[1] is not an absolute path, then it is relative to the current working directory
+		potential_wscript = os.path.join(current_directory, sys.argv[1])
+		if os.path.basename(potential_wscript) == Context.WSCRIPT_FILE and os.path.isfile(potential_wscript):
+			# need to explicitly normalize the path, as it may contain extra '/.'
+			path = os.path.normpath(os.path.dirname(potential_wscript))
+			start_dir = os.path.abspath(path)
+			no_climb = True
+			sys.argv.pop(1)
+
+	ctx = Context.create_context('options')
+	(options, commands, env) = ctx.parse_cmd_args(allow_unknown=True)
+	if options.top:
+		start_dir = Context.run_dir = Context.top_dir = options.top
+		no_climb = True
+	if options.out:
+		Context.out_dir = options.out
+
+	# if 'configure' is in the commands, do not search any further
+	if not no_climb:
+		for k in no_climb_commands:
+			for y in commands:
+				if y.startswith(k):
+					no_climb = True
+					break
+
+	# try to find a lock file (if the project was configured)
+	# at the same time, store the first wscript file seen
+	cur = start_dir
+	while cur:
+		try:
+			lst = os.listdir(cur)
+		except OSError:
+			lst = []
+			Logs.error('Directory %r is unreadable!', cur)
+		if Options.lockfile in lst:
+			env = ConfigSet.ConfigSet()
+			try:
+				env.load(os.path.join(cur, Options.lockfile))
+				ino = os.stat(cur)[stat.ST_INO]
+			except EnvironmentError:
+				pass
+			else:
+				# check if the folder was not moved
+				for x in (env.run_dir, env.top_dir, env.out_dir):
+					if not x:
+						continue
+					if Utils.is_win32:
+						if cur == x:
+							load = True
+							break
+					else:
+						# if the filesystem features symlinks, compare the inode numbers
+						try:
+							ino2 = os.stat(x)[stat.ST_INO]
+						except OSError:
+							pass
+						else:
+							if ino == ino2:
+								load = True
+								break
+				else:
+					Logs.warn('invalid lock file in %s', cur)
+					load = False
+
+				if load:
+					Context.run_dir = env.run_dir
+					Context.top_dir = env.top_dir
+					Context.out_dir = env.out_dir
+					break
+
+		if not Context.run_dir:
+			if Context.WSCRIPT_FILE in lst:
+				Context.run_dir = cur
+
+		next = os.path.dirname(cur)
+		if next == cur:
+			break
+		cur = next
+
+		if no_climb:
+			break
+
+	wscript = os.path.normpath(os.path.join(Context.run_dir, Context.WSCRIPT_FILE))
+	if not os.path.exists(wscript):
+		if options.whelp:
+			Logs.warn('These are the generic options (no wscript/project found)')
+			ctx.parser.print_help()
+			sys.exit(0)
+		Logs.error('Waf: Run from a folder containing a %r file (or try -h for the generic options)', Context.WSCRIPT_FILE)
+		sys.exit(1)
+
+	try:
+		os.chdir(Context.run_dir)
+	except OSError:
+		Logs.error('Waf: The folder %r is unreadable', Context.run_dir)
+		sys.exit(1)
+
+	try:
+		set_main_module(wscript)
+	except Errors.WafError as e:
+		Logs.pprint('RED', e.verbose_msg)
+		Logs.error(str(e))
+		sys.exit(1)
+	except Exception as e:
+		Logs.error('Waf: The wscript in %r is unreadable', Context.run_dir)
+		traceback.print_exc(file=sys.stdout)
+		sys.exit(2)
+
+	if options.profile:
+		import cProfile, pstats
+		cProfile.runctx('from waflib import Scripting; Scripting.run_commands()', {}, {}, 'profi.txt')
+		p = pstats.Stats('profi.txt')
+		p.sort_stats('time').print_stats(75) # or 'cumulative'
+	else:
+		try:
+			try:
+				run_commands()
+			except:
+				if options.pdb:
+					import pdb
+					type, value, tb = sys.exc_info()
+					traceback.print_exc()
+					pdb.post_mortem(tb)
+				else:
+					raise
+		except Errors.WafError as e:
+			if Logs.verbose > 1:
+				Logs.pprint('RED', e.verbose_msg)
+			Logs.error(e.msg)
+			sys.exit(1)
+		except SystemExit:
+			raise
+		except Exception as e:
+			traceback.print_exc(file=sys.stdout)
+			sys.exit(2)
+		except KeyboardInterrupt:
+			Logs.pprint('RED', 'Interrupted')
+			sys.exit(68)
+
+def set_main_module(file_path):
+	"""
+	Read the main wscript file into :py:const:`waflib.Context.Context.g_module` and
+	bind default functions such as ``init``, ``dist``, ``distclean`` if not defined.
+	Called by :py:func:`waflib.Scripting.waf_entry_point` during the initialization.
+
+	:param file_path: absolute path representing the top-level wscript file
+	:type file_path: string
+	"""
+	Context.g_module = Context.load_module(file_path)
+	Context.g_module.root_path = file_path
+
+	# note: to register the module globally, use the following:
+	# sys.modules['wscript_main'] = g_module
+
+	def set_def(obj):
+		name = obj.__name__
+		if not name in Context.g_module.__dict__:
+			setattr(Context.g_module, name, obj)
+	for k in (dist, distclean, distcheck):
+		set_def(k)
+	# add dummy init and shutdown functions if they're not defined
+	if not 'init' in Context.g_module.__dict__:
+		Context.g_module.init = Utils.nada
+	if not 'shutdown' in Context.g_module.__dict__:
+		Context.g_module.shutdown = Utils.nada
+	if not 'options' in Context.g_module.__dict__:
+		Context.g_module.options = Utils.nada
+
+def parse_options():
+	"""
+	Parses the command-line options and initialize the logging system.
+	Called by :py:func:`waflib.Scripting.waf_entry_point` during the initialization.
+	"""
+	ctx = Context.create_context('options')
+	ctx.execute()
+	if not Options.commands:
+		Options.commands.append(default_cmd)
+	if Options.options.whelp:
+		ctx.parser.print_help()
+		sys.exit(0)
+
+def run_command(cmd_name):
+	"""
+	Executes a single Waf command. Called by :py:func:`waflib.Scripting.run_commands`.
+
+	:param cmd_name: command to execute, like ``build``
+	:type cmd_name: string
+	"""
+	ctx = Context.create_context(cmd_name)
+	ctx.log_timer = Utils.Timer()
+	ctx.options = Options.options # provided for convenience
+	ctx.cmd = cmd_name
+	try:
+		ctx.execute()
+	finally:
+		# Issue 1374
+		ctx.finalize()
+	return ctx
+
+def run_commands():
+	"""
+	Execute the Waf commands that were given on the command-line, and the other options
+	Called by :py:func:`waflib.Scripting.waf_entry_point` during the initialization, and executed
+	after :py:func:`waflib.Scripting.parse_options`.
+	"""
+	parse_options()
+	run_command('init')
+	while Options.commands:
+		cmd_name = Options.commands.pop(0)
+		ctx = run_command(cmd_name)
+		Logs.info('%r finished successfully (%s)', cmd_name, ctx.log_timer)
+	run_command('shutdown')
+
+###########################################################################################
+
+def distclean_dir(dirname):
+	"""
+	Distclean function called in the particular case when::
+
+		top == out
+
+	:param dirname: absolute path of the folder to clean
+	:type dirname: string
+	"""
+	for (root, dirs, files) in os.walk(dirname):
+		for f in files:
+			if f.endswith(('.o', '.moc', '.exe')):
+				fname = os.path.join(root, f)
+				try:
+					os.remove(fname)
+				except OSError:
+					Logs.warn('Could not remove %r', fname)
+
+	for x in (Context.DBFILE, 'config.log'):
+		try:
+			os.remove(x)
+		except OSError:
+			pass
+
+	try:
+		shutil.rmtree('c4che')
+	except OSError:
+		pass
+
+def distclean(ctx):
+	'''removes build folders and data'''
+
+	def remove_and_log(k, fun):
+		try:
+			fun(k)
+		except EnvironmentError as e:
+			if e.errno != errno.ENOENT:
+				Logs.warn('Could not remove %r', k)
+
+	# remove waf cache folders on the top-level
+	if not Options.commands:
+		for k in os.listdir('.'):
+			for x in '.waf-2 waf-2 .waf3-2 waf3-2'.split():
+				if k.startswith(x):
+					remove_and_log(k, shutil.rmtree)
+
+	# remove a build folder, if any
+	cur = '.'
+	if ctx.options.no_lock_in_top:
+		cur = ctx.options.out
+
+	try:
+		lst = os.listdir(cur)
+	except OSError:
+		Logs.warn('Could not read %r', cur)
+		return
+
+	if Options.lockfile in lst:
+		f = os.path.join(cur, Options.lockfile)
+		try:
+			env = ConfigSet.ConfigSet(f)
+		except EnvironmentError:
+			Logs.warn('Could not read %r', f)
+			return
+
+		if not env.out_dir or not env.top_dir:
+			Logs.warn('Invalid lock file %r', f)
+			return
+
+		if env.out_dir == env.top_dir:
+			distclean_dir(env.out_dir)
+		else:
+			remove_and_log(env.out_dir, shutil.rmtree)
+
+		for k in (env.out_dir, env.top_dir, env.run_dir):
+			p = os.path.join(k, Options.lockfile)
+			remove_and_log(p, os.remove)
+
+class Dist(Context.Context):
+	'''creates an archive containing the project source code'''
+	cmd = 'dist'
+	fun = 'dist'
+	algo = 'tar.bz2'
+	ext_algo = {}
+
+	def execute(self):
+		"""
+		See :py:func:`waflib.Context.Context.execute`
+		"""
+		self.recurse([os.path.dirname(Context.g_module.root_path)])
+		self.archive()
+
+	def archive(self):
+		"""
+		Creates the source archive.
+		"""
+		import tarfile
+
+		arch_name = self.get_arch_name()
+
+		try:
+			self.base_path
+		except AttributeError:
+			self.base_path = self.path
+
+		node = self.base_path.make_node(arch_name)
+		try:
+			node.delete()
+		except OSError:
+			pass
+
+		files = self.get_files()
+
+		if self.algo.startswith('tar.'):
+			tar = tarfile.open(node.abspath(), 'w:' + self.algo.replace('tar.', ''))
+
+			for x in files:
+				self.add_tar_file(x, tar)
+			tar.close()
+		elif self.algo == 'zip':
+			import zipfile
+			zip = zipfile.ZipFile(node.abspath(), 'w', compression=zipfile.ZIP_DEFLATED)
+
+			for x in files:
+				archive_name = self.get_base_name() + '/' + x.path_from(self.base_path)
+				zip.write(x.abspath(), archive_name, zipfile.ZIP_DEFLATED)
+			zip.close()
+		else:
+			self.fatal('Valid algo types are tar.bz2, tar.gz, tar.xz or zip')
+
+		try:
+			from hashlib import sha256
+		except ImportError:
+			digest = ''
+		else:
+			digest = ' (sha256=%r)' % sha256(node.read(flags='rb')).hexdigest()
+
+		Logs.info('New archive created: %s%s', self.arch_name, digest)
+
+	def get_tar_path(self, node):
+		"""
+		Return the path to use for a node in the tar archive, the purpose of this
+		is to let subclases resolve symbolic links or to change file names
+
+		:return: absolute path
+		:rtype: string
+		"""
+		return node.abspath()
+
+	def add_tar_file(self, x, tar):
+		"""
+		Adds a file to the tar archive. Symlinks are not verified.
+
+		:param x: file path
+		:param tar: tar file object
+		"""
+		p = self.get_tar_path(x)
+		tinfo = tar.gettarinfo(name=p, arcname=self.get_tar_prefix() + '/' + x.path_from(self.base_path))
+		tinfo.uid   = 0
+		tinfo.gid   = 0
+		tinfo.uname = 'root'
+		tinfo.gname = 'root'
+
+		if os.path.isfile(p):
+			with open(p, 'rb') as f:
+				tar.addfile(tinfo, fileobj=f)
+		else:
+			tar.addfile(tinfo)
+
+	def get_tar_prefix(self):
+		"""
+		Returns the base path for files added into the archive tar file
+
+		:rtype: string
+		"""
+		try:
+			return self.tar_prefix
+		except AttributeError:
+			return self.get_base_name()
+
+	def get_arch_name(self):
+		"""
+		Returns the archive file name.
+		Set the attribute *arch_name* to change the default value::
+
+			def dist(ctx):
+				ctx.arch_name = 'ctx.tar.bz2'
+
+		:rtype: string
+		"""
+		try:
+			self.arch_name
+		except AttributeError:
+			self.arch_name = self.get_base_name() + '.' + self.ext_algo.get(self.algo, self.algo)
+		return self.arch_name
+
+	def get_base_name(self):
+		"""
+		Returns the default name of the main directory in the archive, which is set to *appname-version*.
+		Set the attribute *base_name* to change the default value::
+
+			def dist(ctx):
+				ctx.base_name = 'files'
+
+		:rtype: string
+		"""
+		try:
+			self.base_name
+		except AttributeError:
+			appname = getattr(Context.g_module, Context.APPNAME, 'noname')
+			version = getattr(Context.g_module, Context.VERSION, '1.0')
+			self.base_name = appname + '-' + version
+		return self.base_name
+
+	def get_excl(self):
+		"""
+		Returns the patterns to exclude for finding the files in the top-level directory.
+		Set the attribute *excl* to change the default value::
+
+			def dist(ctx):
+				ctx.excl = 'build **/*.o **/*.class'
+
+		:rtype: string
+		"""
+		try:
+			return self.excl
+		except AttributeError:
+			self.excl = Node.exclude_regs + ' **/waf-2.* **/.waf-2.* **/waf3-2.* **/.waf3-2.* **/*~ **/*.rej **/*.orig **/*.pyc **/*.pyo **/*.bak **/*.swp **/.lock-w*'
+			if Context.out_dir:
+				nd = self.root.find_node(Context.out_dir)
+				if nd:
+					self.excl += ' ' + nd.path_from(self.base_path)
+			return self.excl
+
+	def get_files(self):
+		"""
+		Files to package are searched automatically by :py:func:`waflib.Node.Node.ant_glob`.
+		Set *files* to prevent this behaviour::
+
+			def dist(ctx):
+				ctx.files = ctx.path.find_node('wscript')
+
+		Files are also searched from the directory 'base_path', to change it, set::
+
+			def dist(ctx):
+				ctx.base_path = path
+
+		:rtype: list of :py:class:`waflib.Node.Node`
+		"""
+		try:
+			files = self.files
+		except AttributeError:
+			files = self.base_path.ant_glob('**/*', excl=self.get_excl())
+		return files
+
+def dist(ctx):
+	'''makes a tarball for redistributing the sources'''
+	pass
+
+class DistCheck(Dist):
+	"""creates an archive with dist, then tries to build it"""
+	fun = 'distcheck'
+	cmd = 'distcheck'
+
+	def execute(self):
+		"""
+		See :py:func:`waflib.Context.Context.execute`
+		"""
+		self.recurse([os.path.dirname(Context.g_module.root_path)])
+		self.archive()
+		self.check()
+
+	def make_distcheck_cmd(self, tmpdir):
+		cfg = []
+		if Options.options.distcheck_args:
+			cfg = shlex.split(Options.options.distcheck_args)
+		else:
+			cfg = [x for x in sys.argv if x.startswith('-')]
+		cmd = [sys.executable, sys.argv[0], 'configure', 'build', 'install', 'uninstall', '--destdir=' + tmpdir] + cfg
+		return cmd
+
+	def check(self):
+		"""
+		Creates the archive, uncompresses it and tries to build the project
+		"""
+		import tempfile, tarfile
+
+		with tarfile.open(self.get_arch_name()) as t:
+			for x in t:
+				t.extract(x)
+
+		instdir = tempfile.mkdtemp('.inst', self.get_base_name())
+		cmd = self.make_distcheck_cmd(instdir)
+		ret = Utils.subprocess.Popen(cmd, cwd=self.get_base_name()).wait()
+		if ret:
+			raise Errors.WafError('distcheck failed with code %r' % ret)
+
+		if os.path.exists(instdir):
+			raise Errors.WafError('distcheck succeeded, but files were left in %s' % instdir)
+
+		shutil.rmtree(self.get_base_name())
+
+
+def distcheck(ctx):
+	'''checks if the project compiles (tarball from 'dist')'''
+	pass
+
+def autoconfigure(execute_method):
+	"""
+	Decorator that enables context commands to run *configure* as needed.
+	"""
+	def execute(self):
+		"""
+		Wraps :py:func:`waflib.Context.Context.execute` on the context class
+		"""
+		if not Configure.autoconfig:
+			return execute_method(self)
+
+		env = ConfigSet.ConfigSet()
+		do_config = False
+		try:
+			env.load(os.path.join(Context.top_dir, Options.lockfile))
+		except EnvironmentError:
+			Logs.warn('Configuring the project')
+			do_config = True
+		else:
+			if env.run_dir != Context.run_dir:
+				do_config = True
+			else:
+				h = 0
+				for f in env.files:
+					try:
+						h = Utils.h_list((h, Utils.readf(f, 'rb')))
+					except EnvironmentError:
+						do_config = True
+						break
+				else:
+					do_config = h != env.hash
+
+		if do_config:
+			cmd = env.config_cmd or 'configure'
+			if Configure.autoconfig == 'clobber':
+				tmp = Options.options.__dict__
+				if env.options:
+					Options.options.__dict__ = env.options
+				try:
+					run_command(cmd)
+				finally:
+					Options.options.__dict__ = tmp
+			else:
+				run_command(cmd)
+			run_command(self.cmd)
+		else:
+			return execute_method(self)
+	return execute
+Build.BuildContext.execute = autoconfigure(Build.BuildContext.execute)
+
diff --git a/Task.py b/Task.py
new file mode 100644
index 0000000..0fc449d
--- /dev/null
+++ b/Task.py
@@ -0,0 +1,1394 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Tasks represent atomic operations such as processes.
+"""
+
+import os, re, sys, tempfile, traceback
+from waflib import Utils, Logs, Errors
+
+# task states
+NOT_RUN = 0
+"""The task was not executed yet"""
+
+MISSING = 1
+"""The task has been executed but the files have not been created"""
+
+CRASHED = 2
+"""The task execution returned a non-zero exit status"""
+
+EXCEPTION = 3
+"""An exception occurred in the task execution"""
+
+CANCELED = 4
+"""A dependency for the task is missing so it was cancelled"""
+
+SKIPPED = 8
+"""The task did not have to be executed"""
+
+SUCCESS = 9
+"""The task was successfully executed"""
+
+ASK_LATER = -1
+"""The task is not ready to be executed"""
+
+SKIP_ME = -2
+"""The task does not need to be executed"""
+
+RUN_ME = -3
+"""The task must be executed"""
+
+CANCEL_ME = -4
+"""The task cannot be executed because of a dependency problem"""
+
+COMPILE_TEMPLATE_SHELL = '''
+def f(tsk):
+	env = tsk.env
+	gen = tsk.generator
+	bld = gen.bld
+	cwdx = tsk.get_cwd()
+	p = env.get_flat
+	tsk.last_cmd = cmd = \'\'\' %s \'\'\' % s
+	return tsk.exec_command(cmd, cwd=cwdx, env=env.env or None)
+'''
+
+COMPILE_TEMPLATE_NOSHELL = '''
+def f(tsk):
+	env = tsk.env
+	gen = tsk.generator
+	bld = gen.bld
+	cwdx = tsk.get_cwd()
+	def to_list(xx):
+		if isinstance(xx, str): return [xx]
+		return xx
+	def merge(lst1, lst2):
+		if lst1 and lst2:
+			return lst1[:-1] + [lst1[-1] + lst2[0]] + lst2[1:]
+		return lst1 + lst2
+	lst = []
+	%s
+	if '' in lst:
+		lst = [x for x in lst if x]
+	tsk.last_cmd = lst
+	return tsk.exec_command(lst, cwd=cwdx, env=env.env or None)
+'''
+
+COMPILE_TEMPLATE_SIG_VARS = '''
+def f(tsk):
+	super(tsk.__class__, tsk).sig_vars()
+	env = tsk.env
+	gen = tsk.generator
+	bld = gen.bld
+	cwdx = tsk.get_cwd()
+	p = env.get_flat
+	buf = []
+	%s
+	tsk.m.update(repr(buf).encode())
+'''
+
+classes = {}
+"""
+The metaclass :py:class:`waflib.Task.store_task_type` stores all class tasks
+created by user scripts or Waf tools to this dict. It maps class names to class objects.
+"""
+
+class store_task_type(type):
+	"""
+	Metaclass: store the task classes into the dict pointed by the
+	class attribute 'register' which defaults to :py:const:`waflib.Task.classes`,
+
+	The attribute 'run_str' is compiled into a method 'run' bound to the task class.
+	"""
+	def __init__(cls, name, bases, dict):
+		super(store_task_type, cls).__init__(name, bases, dict)
+		name = cls.__name__
+
+		if name != 'evil' and name != 'Task':
+			if getattr(cls, 'run_str', None):
+				# if a string is provided, convert it to a method
+				(f, dvars) = compile_fun(cls.run_str, cls.shell)
+				cls.hcode = Utils.h_cmd(cls.run_str)
+				cls.orig_run_str = cls.run_str
+				# change the name of run_str or it is impossible to subclass with a function
+				cls.run_str = None
+				cls.run = f
+				# process variables
+				cls.vars = list(set(cls.vars + dvars))
+				cls.vars.sort()
+				if cls.vars:
+					fun = compile_sig_vars(cls.vars)
+					if fun:
+						cls.sig_vars = fun
+			elif getattr(cls, 'run', None) and not 'hcode' in cls.__dict__:
+				# getattr(cls, 'hcode') would look in the upper classes
+				cls.hcode = Utils.h_cmd(cls.run)
+
+			# be creative
+			getattr(cls, 'register', classes)[name] = cls
+
+evil = store_task_type('evil', (object,), {})
+"Base class provided to avoid writing a metaclass, so the code can run in python 2.6 and 3.x unmodified"
+
+class Task(evil):
+	"""
+	Task objects represents actions to perform such as commands to execute by calling the `run` method.
+
+	Detecting when to execute a task occurs in the method :py:meth:`waflib.Task.Task.runnable_status`.
+
+	Detecting which tasks to execute is performed through a hash value returned by
+	:py:meth:`waflib.Task.Task.signature`. The task signature is persistent from build to build.
+	"""
+	vars = []
+	"""ConfigSet variables that should trigger a rebuild (class attribute used for :py:meth:`waflib.Task.Task.sig_vars`)"""
+
+	always_run = False
+	"""Specify whether task instances must always be executed or not (class attribute)"""
+
+	shell = False
+	"""Execute the command with the shell (class attribute)"""
+
+	color = 'GREEN'
+	"""Color for the console display, see :py:const:`waflib.Logs.colors_lst`"""
+
+	ext_in = []
+	"""File extensions that objects of this task class may use"""
+
+	ext_out = []
+	"""File extensions that objects of this task class may create"""
+
+	before = []
+	"""List of task class names to execute before instances of this class"""
+
+	after = []
+	"""List of task class names to execute after instances of this class"""
+
+	hcode = Utils.SIG_NIL
+	"""String representing an additional hash for the class representation"""
+
+	keep_last_cmd = False
+	"""Whether to keep the last command executed on the instance after execution.
+	This may be useful for certain extensions but it can a lot of memory.
+	"""
+
+	weight = 0
+	"""Optional weight to tune the priority for task instances.
+	The higher, the earlier. The weight only applies to single task objects."""
+
+	tree_weight = 0
+	"""Optional weight to tune the priority of task instances and whole subtrees.
+	The higher, the earlier."""
+
+	prio_order = 0
+	"""Priority order set by the scheduler on instances during the build phase.
+	You most likely do not need to set it.
+	"""
+
+	__slots__ = ('hasrun', 'generator', 'env', 'inputs', 'outputs', 'dep_nodes', 'run_after')
+
+	def __init__(self, *k, **kw):
+		self.hasrun = NOT_RUN
+		try:
+			self.generator = kw['generator']
+		except KeyError:
+			self.generator = self
+
+		self.env = kw['env']
+		""":py:class:`waflib.ConfigSet.ConfigSet` object (make sure to provide one)"""
+
+		self.inputs  = []
+		"""List of input nodes, which represent the files used by the task instance"""
+
+		self.outputs = []
+		"""List of output nodes, which represent the files created by the task instance"""
+
+		self.dep_nodes = []
+		"""List of additional nodes to depend on"""
+
+		self.run_after = set()
+		"""Set of tasks that must be executed before this one"""
+
+	def __lt__(self, other):
+		return self.priority() > other.priority()
+	def __le__(self, other):
+		return self.priority() >= other.priority()
+	def __gt__(self, other):
+		return self.priority() < other.priority()
+	def __ge__(self, other):
+		return self.priority() <= other.priority()
+
+	def get_cwd(self):
+		"""
+		:return: current working directory
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		bld = self.generator.bld
+		ret = getattr(self, 'cwd', None) or getattr(bld, 'cwd', bld.bldnode)
+		if isinstance(ret, str):
+			if os.path.isabs(ret):
+				ret = bld.root.make_node(ret)
+			else:
+				ret = self.generator.path.make_node(ret)
+		return ret
+
+	def quote_flag(self, x):
+		"""
+		Surround a process argument by quotes so that a list of arguments can be written to a file
+
+		:param x: flag
+		:type x: string
+		:return: quoted flag
+		:rtype: string
+		"""
+		old = x
+		if '\\' in x:
+			x = x.replace('\\', '\\\\')
+		if '"' in x:
+			x = x.replace('"', '\\"')
+		if old != x or ' ' in x or '\t' in x or "'" in x:
+			x = '"%s"' % x
+		return x
+
+	def priority(self):
+		"""
+		Priority of execution; the higher, the earlier
+
+		:return: the priority value
+		:rtype: a tuple of numeric values
+		"""
+		return (self.weight + self.prio_order, - getattr(self.generator, 'tg_idx_count', 0))
+
+	def split_argfile(self, cmd):
+		"""
+		Splits a list of process commands into the executable part and its list of arguments
+
+		:return: a tuple containing the executable first and then the rest of arguments
+		:rtype: tuple
+		"""
+		return ([cmd[0]], [self.quote_flag(x) for x in cmd[1:]])
+
+	def exec_command(self, cmd, **kw):
+		"""
+		Wrapper for :py:meth:`waflib.Context.Context.exec_command`.
+		This version set the current working directory (``build.variant_dir``),
+		applies PATH settings (if self.env.PATH is provided), and can run long
+		commands through a temporary ``@argfile``.
+
+		:param cmd: process command to execute
+		:type cmd: list of string (best) or string (process will use a shell)
+		:return: the return code
+		:rtype: int
+
+		Optional parameters:
+
+		#. cwd: current working directory (Node or string)
+		#. stdout: set to None to prevent waf from capturing the process standard output
+		#. stderr: set to None to prevent waf from capturing the process standard error
+		#. timeout: timeout value (Python 3)
+		"""
+		if not 'cwd' in kw:
+			kw['cwd'] = self.get_cwd()
+
+		if hasattr(self, 'timeout'):
+			kw['timeout'] = self.timeout
+
+		if self.env.PATH:
+			env = kw['env'] = dict(kw.get('env') or self.env.env or os.environ)
+			env['PATH'] = self.env.PATH if isinstance(self.env.PATH, str) else os.pathsep.join(self.env.PATH)
+
+		if hasattr(self, 'stdout'):
+			kw['stdout'] = self.stdout
+		if hasattr(self, 'stderr'):
+			kw['stderr'] = self.stderr
+
+		# workaround for command line length limit:
+		# http://support.microsoft.com/kb/830473
+		if not isinstance(cmd, str) and (len(repr(cmd)) >= 8192 if Utils.is_win32 else len(cmd) > 200000):
+			cmd, args = self.split_argfile(cmd)
+			try:
+				(fd, tmp) = tempfile.mkstemp()
+				os.write(fd, '\r\n'.join(args).encode())
+				os.close(fd)
+				if Logs.verbose:
+					Logs.debug('argfile: @%r -> %r', tmp, args)
+				return self.generator.bld.exec_command(cmd + ['@' + tmp], **kw)
+			finally:
+				try:
+					os.remove(tmp)
+				except OSError:
+					# anti-virus and indexers can keep files open -_-
+					pass
+		else:
+			return self.generator.bld.exec_command(cmd, **kw)
+
+	def process(self):
+		"""
+		Runs the task and handles errors
+
+		:return: 0 or None if everything is fine
+		:rtype: integer
+		"""
+		# remove the task signature immediately before it is executed
+		# so that the task will be executed again in case of failure
+		try:
+			del self.generator.bld.task_sigs[self.uid()]
+		except KeyError:
+			pass
+
+		try:
+			ret = self.run()
+		except Exception:
+			self.err_msg = traceback.format_exc()
+			self.hasrun = EXCEPTION
+		else:
+			if ret:
+				self.err_code = ret
+				self.hasrun = CRASHED
+			else:
+				try:
+					self.post_run()
+				except Errors.WafError:
+					pass
+				except Exception:
+					self.err_msg = traceback.format_exc()
+					self.hasrun = EXCEPTION
+				else:
+					self.hasrun = SUCCESS
+
+		if self.hasrun != SUCCESS and self.scan:
+			# rescan dependencies on next run
+			try:
+				del self.generator.bld.imp_sigs[self.uid()]
+			except KeyError:
+				pass
+
+	def log_display(self, bld):
+		"Writes the execution status on the context logger"
+		if self.generator.bld.progress_bar == 3:
+			return
+
+		s = self.display()
+		if s:
+			if bld.logger:
+				logger = bld.logger
+			else:
+				logger = Logs
+
+			if self.generator.bld.progress_bar == 1:
+				c1 = Logs.colors.cursor_off
+				c2 = Logs.colors.cursor_on
+				logger.info(s, extra={'stream': sys.stderr, 'terminator':'', 'c1': c1, 'c2' : c2})
+			else:
+				logger.info(s, extra={'terminator':'', 'c1': '', 'c2' : ''})
+
+	def display(self):
+		"""
+		Returns an execution status for the console, the progress bar, or the IDE output.
+
+		:rtype: string
+		"""
+		col1 = Logs.colors(self.color)
+		col2 = Logs.colors.NORMAL
+		master = self.generator.bld.producer
+
+		def cur():
+			# the current task position, computed as late as possible
+			return master.processed - master.ready.qsize()
+
+		if self.generator.bld.progress_bar == 1:
+			return self.generator.bld.progress_line(cur(), master.total, col1, col2)
+
+		if self.generator.bld.progress_bar == 2:
+			ela = str(self.generator.bld.timer)
+			try:
+				ins  = ','.join([n.name for n in self.inputs])
+			except AttributeError:
+				ins = ''
+			try:
+				outs = ','.join([n.name for n in self.outputs])
+			except AttributeError:
+				outs = ''
+			return '|Total %s|Current %s|Inputs %s|Outputs %s|Time %s|\n' % (master.total, cur(), ins, outs, ela)
+
+		s = str(self)
+		if not s:
+			return None
+
+		total = master.total
+		n = len(str(total))
+		fs = '[%%%dd/%%%dd] %%s%%s%%s%%s\n' % (n, n)
+		kw = self.keyword()
+		if kw:
+			kw += ' '
+		return fs % (cur(), total, kw, col1, s, col2)
+
+	def hash_constraints(self):
+		"""
+		Identifies a task type for all the constraints relevant for the scheduler: precedence, file production
+
+		:return: a hash value
+		:rtype: string
+		"""
+		return (tuple(self.before), tuple(self.after), tuple(self.ext_in), tuple(self.ext_out), self.__class__.__name__, self.hcode)
+
+	def format_error(self):
+		"""
+		Returns an error message to display the build failure reasons
+
+		:rtype: string
+		"""
+		if Logs.verbose:
+			msg = ': %r\n%r' % (self, getattr(self, 'last_cmd', ''))
+		else:
+			msg = ' (run with -v to display more information)'
+		name = getattr(self.generator, 'name', '')
+		if getattr(self, "err_msg", None):
+			return self.err_msg
+		elif not self.hasrun:
+			return 'task in %r was not executed for some reason: %r' % (name, self)
+		elif self.hasrun == CRASHED:
+			try:
+				return ' -> task in %r failed with exit status %r%s' % (name, self.err_code, msg)
+			except AttributeError:
+				return ' -> task in %r failed%s' % (name, msg)
+		elif self.hasrun == MISSING:
+			return ' -> missing files in %r%s' % (name, msg)
+		elif self.hasrun == CANCELED:
+			return ' -> %r canceled because of missing dependencies' % name
+		else:
+			return 'invalid status for task in %r: %r' % (name, self.hasrun)
+
+	def colon(self, var1, var2):
+		"""
+		Enable scriptlet expressions of the form ${FOO_ST:FOO}
+		If the first variable (FOO_ST) is empty, then an empty list is returned
+
+		The results will be slightly different if FOO_ST is a list, for example::
+
+			env.FOO    = ['p1', 'p2']
+			env.FOO_ST = '-I%s'
+			# ${FOO_ST:FOO} returns
+			['-Ip1', '-Ip2']
+
+			env.FOO_ST = ['-a', '-b']
+			# ${FOO_ST:FOO} returns
+			['-a', '-b', 'p1', '-a', '-b', 'p2']
+		"""
+		tmp = self.env[var1]
+		if not tmp:
+			return []
+
+		if isinstance(var2, str):
+			it = self.env[var2]
+		else:
+			it = var2
+		if isinstance(tmp, str):
+			return [tmp % x for x in it]
+		else:
+			lst = []
+			for y in it:
+				lst.extend(tmp)
+				lst.append(y)
+			return lst
+
+	def __str__(self):
+		"string to display to the user"
+		name = self.__class__.__name__
+		if self.outputs:
+			if name.endswith(('lib', 'program')) or not self.inputs:
+				node = self.outputs[0]
+				return node.path_from(node.ctx.launch_node())
+		if not (self.inputs or self.outputs):
+			return self.__class__.__name__
+		if len(self.inputs) == 1:
+			node = self.inputs[0]
+			return node.path_from(node.ctx.launch_node())
+
+		src_str = ' '.join([a.path_from(a.ctx.launch_node()) for a in self.inputs])
+		tgt_str = ' '.join([a.path_from(a.ctx.launch_node()) for a in self.outputs])
+		if self.outputs:
+			sep = ' -> '
+		else:
+			sep = ''
+		return '%s: %s%s%s' % (self.__class__.__name__, src_str, sep, tgt_str)
+
+	def keyword(self):
+		"Display keyword used to prettify the console outputs"
+		name = self.__class__.__name__
+		if name.endswith(('lib', 'program')):
+			return 'Linking'
+		if len(self.inputs) == 1 and len(self.outputs) == 1:
+			return 'Compiling'
+		if not self.inputs:
+			if self.outputs:
+				return 'Creating'
+			else:
+				return 'Running'
+		return 'Processing'
+
+	def __repr__(self):
+		"for debugging purposes"
+		try:
+			ins = ",".join([x.name for x in self.inputs])
+			outs = ",".join([x.name for x in self.outputs])
+		except AttributeError:
+			ins = ",".join([str(x) for x in self.inputs])
+			outs = ",".join([str(x) for x in self.outputs])
+		return "".join(['\n\t{task %r: ' % id(self), self.__class__.__name__, " ", ins, " -> ", outs, '}'])
+
+	def uid(self):
+		"""
+		Returns an identifier used to determine if tasks are up-to-date. Since the
+		identifier will be stored between executions, it must be:
+
+			- unique for a task: no two tasks return the same value (for a given build context)
+			- the same for a given task instance
+
+		By default, the node paths, the class name, and the function are used
+		as inputs to compute a hash.
+
+		The pointer to the object (python built-in 'id') will change between build executions,
+		and must be avoided in such hashes.
+
+		:return: hash value
+		:rtype: string
+		"""
+		try:
+			return self.uid_
+		except AttributeError:
+			m = Utils.md5(self.__class__.__name__)
+			up = m.update
+			for x in self.inputs + self.outputs:
+				up(x.abspath())
+			self.uid_ = m.digest()
+			return self.uid_
+
+	def set_inputs(self, inp):
+		"""
+		Appends the nodes to the *inputs* list
+
+		:param inp: input nodes
+		:type inp: node or list of nodes
+		"""
+		if isinstance(inp, list):
+			self.inputs += inp
+		else:
+			self.inputs.append(inp)
+
+	def set_outputs(self, out):
+		"""
+		Appends the nodes to the *outputs* list
+
+		:param out: output nodes
+		:type out: node or list of nodes
+		"""
+		if isinstance(out, list):
+			self.outputs += out
+		else:
+			self.outputs.append(out)
+
+	def set_run_after(self, task):
+		"""
+		Run this task only after the given *task*.
+
+		Calling this method from :py:meth:`waflib.Task.Task.runnable_status` may cause
+		build deadlocks; see :py:meth:`waflib.Tools.fc.fc.runnable_status` for details.
+
+		:param task: task
+		:type task: :py:class:`waflib.Task.Task`
+		"""
+		assert isinstance(task, Task)
+		self.run_after.add(task)
+
+	def signature(self):
+		"""
+		Task signatures are stored between build executions, they are use to track the changes
+		made to the input nodes (not to the outputs!). The signature hashes data from various sources:
+
+		* explicit dependencies: files listed in the inputs (list of node objects) :py:meth:`waflib.Task.Task.sig_explicit_deps`
+		* implicit dependencies: list of nodes returned by scanner methods (when present) :py:meth:`waflib.Task.Task.sig_implicit_deps`
+		* hashed data: variables/values read from task.vars/task.env :py:meth:`waflib.Task.Task.sig_vars`
+
+		If the signature is expected to give a different result, clear the cache kept in ``self.cache_sig``::
+
+			from waflib import Task
+			class cls(Task.Task):
+				def signature(self):
+					sig = super(Task.Task, self).signature()
+					delattr(self, 'cache_sig')
+					return super(Task.Task, self).signature()
+
+		:return: the signature value
+		:rtype: string or bytes
+		"""
+		try:
+			return self.cache_sig
+		except AttributeError:
+			pass
+
+		self.m = Utils.md5(self.hcode)
+
+		# explicit deps
+		self.sig_explicit_deps()
+
+		# env vars
+		self.sig_vars()
+
+		# implicit deps / scanner results
+		if self.scan:
+			try:
+				self.sig_implicit_deps()
+			except Errors.TaskRescan:
+				return self.signature()
+
+		ret = self.cache_sig = self.m.digest()
+		return ret
+
+	def runnable_status(self):
+		"""
+		Returns the Task status
+
+		:return: a task state in :py:const:`waflib.Task.RUN_ME`,
+			:py:const:`waflib.Task.SKIP_ME`, :py:const:`waflib.Task.CANCEL_ME` or :py:const:`waflib.Task.ASK_LATER`.
+		:rtype: int
+		"""
+		bld = self.generator.bld
+		if bld.is_install < 0:
+			return SKIP_ME
+
+		for t in self.run_after:
+			if not t.hasrun:
+				return ASK_LATER
+			elif t.hasrun < SKIPPED:
+				# a dependency has an error
+				return CANCEL_ME
+
+		# first compute the signature
+		try:
+			new_sig = self.signature()
+		except Errors.TaskNotReady:
+			return ASK_LATER
+
+		# compare the signature to a signature computed previously
+		key = self.uid()
+		try:
+			prev_sig = bld.task_sigs[key]
+		except KeyError:
+			Logs.debug('task: task %r must run: it was never run before or the task code changed', self)
+			return RUN_ME
+
+		if new_sig != prev_sig:
+			Logs.debug('task: task %r must run: the task signature changed', self)
+			return RUN_ME
+
+		# compare the signatures of the outputs
+		for node in self.outputs:
+			sig = bld.node_sigs.get(node)
+			if not sig:
+				Logs.debug('task: task %r must run: an output node has no signature', self)
+				return RUN_ME
+			if sig != key:
+				Logs.debug('task: task %r must run: an output node was produced by another task', self)
+				return RUN_ME
+			if not node.exists():
+				Logs.debug('task: task %r must run: an output node does not exist', self)
+				return RUN_ME
+
+		return (self.always_run and RUN_ME) or SKIP_ME
+
+	def post_run(self):
+		"""
+		Called after successful execution to record that the task has run by
+		updating the entry in :py:attr:`waflib.Build.BuildContext.task_sigs`.
+		"""
+		bld = self.generator.bld
+		for node in self.outputs:
+			if not node.exists():
+				self.hasrun = MISSING
+				self.err_msg = '-> missing file: %r' % node.abspath()
+				raise Errors.WafError(self.err_msg)
+			bld.node_sigs[node] = self.uid() # make sure this task produced the files in question
+		bld.task_sigs[self.uid()] = self.signature()
+		if not self.keep_last_cmd:
+			try:
+				del self.last_cmd
+			except AttributeError:
+				pass
+
+	def sig_explicit_deps(self):
+		"""
+		Used by :py:meth:`waflib.Task.Task.signature`; it hashes :py:attr:`waflib.Task.Task.inputs`
+		and :py:attr:`waflib.Task.Task.dep_nodes` signatures.
+		"""
+		bld = self.generator.bld
+		upd = self.m.update
+
+		# the inputs
+		for x in self.inputs + self.dep_nodes:
+			upd(x.get_bld_sig())
+
+		# manual dependencies, they can slow down the builds
+		if bld.deps_man:
+			additional_deps = bld.deps_man
+			for x in self.inputs + self.outputs:
+				try:
+					d = additional_deps[x]
+				except KeyError:
+					continue
+
+				for v in d:
+					try:
+						v = v.get_bld_sig()
+					except AttributeError:
+						if hasattr(v, '__call__'):
+							v = v() # dependency is a function, call it
+					upd(v)
+
+	def sig_deep_inputs(self):
+		"""
+		Enable rebuilds on input files task signatures. Not used by default.
+
+		Example: hashes of output programs can be unchanged after being re-linked,
+		despite the libraries being different. This method can thus prevent stale unit test
+		results (waf_unit_test.py).
+
+		Hashing input file timestamps is another possibility for the implementation.
+		This may cause unnecessary rebuilds when input tasks are frequently executed.
+		Here is an implementation example::
+
+			lst = []
+			for node in self.inputs + self.dep_nodes:
+				st = os.stat(node.abspath())
+				lst.append(st.st_mtime)
+				lst.append(st.st_size)
+			self.m.update(Utils.h_list(lst))
+
+		The downside of the implementation is that it absolutely requires all build directory
+		files to be declared within the current build.
+		"""
+		bld = self.generator.bld
+		lst = [bld.task_sigs[bld.node_sigs[node]] for node in (self.inputs + self.dep_nodes) if node.is_bld()]
+		self.m.update(Utils.h_list(lst))
+
+	def sig_vars(self):
+		"""
+		Used by :py:meth:`waflib.Task.Task.signature`; it hashes :py:attr:`waflib.Task.Task.env` variables/values
+		When overriding this method, and if scriptlet expressions are used, make sure to follow
+		the code in :py:meth:`waflib.Task.Task.compile_sig_vars` to enable dependencies on scriptlet results.
+		"""
+		sig = self.generator.bld.hash_env_vars(self.env, self.vars)
+		self.m.update(sig)
+
+	scan = None
+	"""
+	This method, when provided, returns a tuple containing:
+
+	* a list of nodes corresponding to real files
+	* a list of names for files not found in path_lst
+
+	For example::
+
+		from waflib.Task import Task
+		class mytask(Task):
+			def scan(self, node):
+				return ([], [])
+
+	The first and second lists in the tuple are stored in :py:attr:`waflib.Build.BuildContext.node_deps` and
+	:py:attr:`waflib.Build.BuildContext.raw_deps` respectively.
+	"""
+
+	def sig_implicit_deps(self):
+		"""
+		Used by :py:meth:`waflib.Task.Task.signature`; it hashes node signatures
+		obtained by scanning for dependencies (:py:meth:`waflib.Task.Task.scan`).
+
+		The exception :py:class:`waflib.Errors.TaskRescan` is thrown
+		when a file has changed. In this case, the method :py:meth:`waflib.Task.Task.signature` is called
+		once again, and return here to call :py:meth:`waflib.Task.Task.scan` and searching for dependencies.
+		"""
+		bld = self.generator.bld
+
+		# get the task signatures from previous runs
+		key = self.uid()
+		prev = bld.imp_sigs.get(key, [])
+
+		# for issue #379
+		if prev:
+			try:
+				if prev == self.compute_sig_implicit_deps():
+					return prev
+			except Errors.TaskNotReady:
+				raise
+			except EnvironmentError:
+				# when a file was renamed, remove the stale nodes (headers in folders without source files)
+				# this will break the order calculation for headers created during the build in the source directory (should be uncommon)
+				# the behaviour will differ when top != out
+				for x in bld.node_deps.get(self.uid(), []):
+					if not x.is_bld() and not x.exists():
+						try:
+							del x.parent.children[x.name]
+						except KeyError:
+							pass
+			del bld.imp_sigs[key]
+			raise Errors.TaskRescan('rescan')
+
+		# no previous run or the signature of the dependencies has changed, rescan the dependencies
+		(bld.node_deps[key], bld.raw_deps[key]) = self.scan()
+		if Logs.verbose:
+			Logs.debug('deps: scanner for %s: %r; unresolved: %r', self, bld.node_deps[key], bld.raw_deps[key])
+
+		# recompute the signature and return it
+		try:
+			bld.imp_sigs[key] = self.compute_sig_implicit_deps()
+		except EnvironmentError:
+			for k in bld.node_deps.get(self.uid(), []):
+				if not k.exists():
+					Logs.warn('Dependency %r for %r is missing: check the task declaration and the build order!', k, self)
+			raise
+
+	def compute_sig_implicit_deps(self):
+		"""
+		Used by :py:meth:`waflib.Task.Task.sig_implicit_deps` for computing the actual hash of the
+		:py:class:`waflib.Node.Node` returned by the scanner.
+
+		:return: a hash value for the implicit dependencies
+		:rtype: string or bytes
+		"""
+		upd = self.m.update
+		self.are_implicit_nodes_ready()
+
+		# scanner returns a node that does not have a signature
+		# just *ignore* the error and let them figure out from the compiler output
+		# waf -k behaviour
+		for k in self.generator.bld.node_deps.get(self.uid(), []):
+			upd(k.get_bld_sig())
+		return self.m.digest()
+
+	def are_implicit_nodes_ready(self):
+		"""
+		For each node returned by the scanner, see if there is a task that creates it,
+		and infer the build order
+
+		This has a low performance impact on null builds (1.86s->1.66s) thanks to caching (28s->1.86s)
+		"""
+		bld = self.generator.bld
+		try:
+			cache = bld.dct_implicit_nodes
+		except AttributeError:
+			bld.dct_implicit_nodes = cache = {}
+
+		# one cache per build group
+		try:
+			dct = cache[bld.current_group]
+		except KeyError:
+			dct = cache[bld.current_group] = {}
+			for tsk in bld.cur_tasks:
+				for x in tsk.outputs:
+					dct[x] = tsk
+
+		modified = False
+		for x in bld.node_deps.get(self.uid(), []):
+			if x in dct:
+				self.run_after.add(dct[x])
+				modified = True
+
+		if modified:
+			for tsk in self.run_after:
+				if not tsk.hasrun:
+					#print "task is not ready..."
+					raise Errors.TaskNotReady('not ready')
+if sys.hexversion > 0x3000000:
+	def uid(self):
+		try:
+			return self.uid_
+		except AttributeError:
+			m = Utils.md5(self.__class__.__name__.encode('latin-1', 'xmlcharrefreplace'))
+			up = m.update
+			for x in self.inputs + self.outputs:
+				up(x.abspath().encode('latin-1', 'xmlcharrefreplace'))
+			self.uid_ = m.digest()
+			return self.uid_
+	uid.__doc__ = Task.uid.__doc__
+	Task.uid = uid
+
+def is_before(t1, t2):
+	"""
+	Returns a non-zero value if task t1 is to be executed before task t2::
+
+		t1.ext_out = '.h'
+		t2.ext_in = '.h'
+		t2.after = ['t1']
+		t1.before = ['t2']
+		waflib.Task.is_before(t1, t2) # True
+
+	:param t1: Task object
+	:type t1: :py:class:`waflib.Task.Task`
+	:param t2: Task object
+	:type t2: :py:class:`waflib.Task.Task`
+	"""
+	to_list = Utils.to_list
+	for k in to_list(t2.ext_in):
+		if k in to_list(t1.ext_out):
+			return 1
+
+	if t1.__class__.__name__ in to_list(t2.after):
+		return 1
+
+	if t2.__class__.__name__ in to_list(t1.before):
+		return 1
+
+	return 0
+
+def set_file_constraints(tasks):
+	"""
+	Updates the ``run_after`` attribute of all tasks based on the task inputs and outputs
+
+	:param tasks: tasks
+	:type tasks: list of :py:class:`waflib.Task.Task`
+	"""
+	ins = Utils.defaultdict(set)
+	outs = Utils.defaultdict(set)
+	for x in tasks:
+		for a in x.inputs:
+			ins[a].add(x)
+		for a in x.dep_nodes:
+			ins[a].add(x)
+		for a in x.outputs:
+			outs[a].add(x)
+
+	links = set(ins.keys()).intersection(outs.keys())
+	for k in links:
+		for a in ins[k]:
+			a.run_after.update(outs[k])
+
+
+class TaskGroup(object):
+	"""
+	Wrap nxm task order constraints into a single object
+	to prevent the creation of large list/set objects
+
+	This is an optimization
+	"""
+	def __init__(self, prev, next):
+		self.prev = prev
+		self.next = next
+		self.done = False
+
+	def get_hasrun(self):
+		for k in self.prev:
+			if not k.hasrun:
+				return NOT_RUN
+		return SUCCESS
+
+	hasrun = property(get_hasrun, None)
+
+def set_precedence_constraints(tasks):
+	"""
+	Updates the ``run_after`` attribute of all tasks based on the after/before/ext_out/ext_in attributes
+
+	:param tasks: tasks
+	:type tasks: list of :py:class:`waflib.Task.Task`
+	"""
+	cstr_groups = Utils.defaultdict(list)
+	for x in tasks:
+		h = x.hash_constraints()
+		cstr_groups[h].append(x)
+
+	keys = list(cstr_groups.keys())
+	maxi = len(keys)
+
+	# this list should be short
+	for i in range(maxi):
+		t1 = cstr_groups[keys[i]][0]
+		for j in range(i + 1, maxi):
+			t2 = cstr_groups[keys[j]][0]
+
+			# add the constraints based on the comparisons
+			if is_before(t1, t2):
+				a = i
+				b = j
+			elif is_before(t2, t1):
+				a = j
+				b = i
+			else:
+				continue
+
+			a = cstr_groups[keys[a]]
+			b = cstr_groups[keys[b]]
+
+			if len(a) < 2 or len(b) < 2:
+				for x in b:
+					x.run_after.update(a)
+			else:
+				group = TaskGroup(set(a), set(b))
+				for x in b:
+					x.run_after.add(group)
+
+def funex(c):
+	"""
+	Compiles a scriptlet expression into a Python function
+
+	:param c: function to compile
+	:type c: string
+	:return: the function 'f' declared in the input string
+	:rtype: function
+	"""
+	dc = {}
+	exec(c, dc)
+	return dc['f']
+
+re_cond = re.compile('(?P<var>\w+)|(?P<or>\|)|(?P<and>&)')
+re_novar = re.compile(r'^(SRC|TGT)\W+.*?$')
+reg_act = re.compile(r'(?P<backslash>\\)|(?P<dollar>\$\$)|(?P<subst>\$\{(?P<var>\w+)(?P<code>.*?)\})', re.M)
+def compile_fun_shell(line):
+	"""
+	Creates a compiled function to execute a process through a sub-shell
+	"""
+	extr = []
+	def repl(match):
+		g = match.group
+		if g('dollar'):
+			return "$"
+		elif g('backslash'):
+			return '\\\\'
+		elif g('subst'):
+			extr.append((g('var'), g('code')))
+			return "%s"
+		return None
+	line = reg_act.sub(repl, line) or line
+	dvars = []
+	def add_dvar(x):
+		if x not in dvars:
+			dvars.append(x)
+
+	def replc(m):
+		# performs substitutions and populates dvars
+		if m.group('and'):
+			return ' and '
+		elif m.group('or'):
+			return ' or '
+		else:
+			x = m.group('var')
+			add_dvar(x)
+			return 'env[%r]' % x
+
+	parm = []
+	app = parm.append
+	for (var, meth) in extr:
+		if var == 'SRC':
+			if meth:
+				app('tsk.inputs%s' % meth)
+			else:
+				app('" ".join([a.path_from(cwdx) for a in tsk.inputs])')
+		elif var == 'TGT':
+			if meth:
+				app('tsk.outputs%s' % meth)
+			else:
+				app('" ".join([a.path_from(cwdx) for a in tsk.outputs])')
+		elif meth:
+			if meth.startswith(':'):
+				add_dvar(var)
+				m = meth[1:]
+				if m == 'SRC':
+					m = '[a.path_from(cwdx) for a in tsk.inputs]'
+				elif m == 'TGT':
+					m = '[a.path_from(cwdx) for a in tsk.outputs]'
+				elif re_novar.match(m):
+					m = '[tsk.inputs%s]' % m[3:]
+				elif re_novar.match(m):
+					m = '[tsk.outputs%s]' % m[3:]
+				else:
+					add_dvar(m)
+					if m[:3] not in ('tsk', 'gen', 'bld'):
+						m = '%r' % m
+				app('" ".join(tsk.colon(%r, %s))' % (var, m))
+			elif meth.startswith('?'):
+				# In A?B|C output env.A if one of env.B or env.C is non-empty
+				expr = re_cond.sub(replc, meth[1:])
+				app('p(%r) if (%s) else ""' % (var, expr))
+			else:
+				call = '%s%s' % (var, meth)
+				add_dvar(call)
+				app(call)
+		else:
+			add_dvar(var)
+			app("p('%s')" % var)
+	if parm:
+		parm = "%% (%s) " % (',\n\t\t'.join(parm))
+	else:
+		parm = ''
+
+	c = COMPILE_TEMPLATE_SHELL % (line, parm)
+	Logs.debug('action: %s', c.strip().splitlines())
+	return (funex(c), dvars)
+
+reg_act_noshell = re.compile(r"(?P<space>\s+)|(?P<subst>\$\{(?P<var>\w+)(?P<code>.*?)\})|(?P<text>([^$ \t\n\r\f\v]|\$\$)+)", re.M)
+def compile_fun_noshell(line):
+	"""
+	Creates a compiled function to execute a process without a sub-shell
+	"""
+	buf = []
+	dvars = []
+	merge = False
+	app = buf.append
+
+	def add_dvar(x):
+		if x not in dvars:
+			dvars.append(x)
+
+	def replc(m):
+		# performs substitutions and populates dvars
+		if m.group('and'):
+			return ' and '
+		elif m.group('or'):
+			return ' or '
+		else:
+			x = m.group('var')
+			add_dvar(x)
+			return 'env[%r]' % x
+
+	for m in reg_act_noshell.finditer(line):
+		if m.group('space'):
+			merge = False
+			continue
+		elif m.group('text'):
+			app('[%r]' % m.group('text').replace('$$', '$'))
+		elif m.group('subst'):
+			var = m.group('var')
+			code = m.group('code')
+			if var == 'SRC':
+				if code:
+					app('[tsk.inputs%s]' % code)
+				else:
+					app('[a.path_from(cwdx) for a in tsk.inputs]')
+			elif var == 'TGT':
+				if code:
+					app('[tsk.outputs%s]' % code)
+				else:
+					app('[a.path_from(cwdx) for a in tsk.outputs]')
+			elif code:
+				if code.startswith(':'):
+					# a composed variable ${FOO:OUT}
+					add_dvar(var)
+					m = code[1:]
+					if m == 'SRC':
+						m = '[a.path_from(cwdx) for a in tsk.inputs]'
+					elif m == 'TGT':
+						m = '[a.path_from(cwdx) for a in tsk.outputs]'
+					elif re_novar.match(m):
+						m = '[tsk.inputs%s]' % m[3:]
+					elif re_novar.match(m):
+						m = '[tsk.outputs%s]' % m[3:]
+					else:
+						add_dvar(m)
+						if m[:3] not in ('tsk', 'gen', 'bld'):
+							m = '%r' % m
+					app('tsk.colon(%r, %s)' % (var, m))
+				elif code.startswith('?'):
+					# In A?B|C output env.A if one of env.B or env.C is non-empty
+					expr = re_cond.sub(replc, code[1:])
+					app('to_list(env[%r] if (%s) else [])' % (var, expr))
+				else:
+					# plain code such as ${tsk.inputs[0].abspath()}
+					call = '%s%s' % (var, code)
+					add_dvar(call)
+					app('gen.to_list(%s)' % call)
+			else:
+				# a plain variable such as # a plain variable like ${AR}
+				app('to_list(env[%r])' % var)
+				add_dvar(var)
+		if merge:
+			tmp = 'merge(%s, %s)' % (buf[-2], buf[-1])
+			del buf[-1]
+			buf[-1] = tmp
+		merge = True # next turn
+
+	buf = ['lst.extend(%s)' % x for x in buf]
+	fun = COMPILE_TEMPLATE_NOSHELL % "\n\t".join(buf)
+	Logs.debug('action: %s', fun.strip().splitlines())
+	return (funex(fun), dvars)
+
+def compile_fun(line, shell=False):
+	"""
+	Parses a string expression such as '${CC} ${SRC} -o ${TGT}' and returns a pair containing:
+
+	* The function created (compiled) for use as :py:meth:`waflib.Task.Task.run`
+	* The list of variables that must cause rebuilds when *env* data is modified
+
+	for example::
+
+		from waflib.Task import compile_fun
+		compile_fun('cxx', '${CXX} -o ${TGT[0]} ${SRC} -I ${SRC[0].parent.bldpath()}')
+
+		def build(bld):
+			bld(source='wscript', rule='echo "foo\\${SRC[0].name}\\bar"')
+
+	The env variables (CXX, ..) on the task must not hold dicts so as to preserve a consistent order.
+	The reserved keywords ``TGT`` and ``SRC`` represent the task input and output nodes
+
+	"""
+	if isinstance(line, str):
+		if line.find('<') > 0 or line.find('>') > 0 or line.find('&&') > 0:
+			shell = True
+	else:
+		dvars_lst = []
+		funs_lst = []
+		for x in line:
+			if isinstance(x, str):
+				fun, dvars = compile_fun(x, shell)
+				dvars_lst += dvars
+				funs_lst.append(fun)
+			else:
+				# assume a function to let through
+				funs_lst.append(x)
+		def composed_fun(task):
+			for x in funs_lst:
+				ret = x(task)
+				if ret:
+					return ret
+			return None
+		return composed_fun, dvars_lst
+	if shell:
+		return compile_fun_shell(line)
+	else:
+		return compile_fun_noshell(line)
+
+def compile_sig_vars(vars):
+	"""
+	This method produces a sig_vars method suitable for subclasses that provide
+	scriptlet code in their run_str code.
+	If no such method can be created, this method returns None.
+
+	The purpose of the sig_vars method returned is to ensures
+	that rebuilds occur whenever the contents of the expression changes.
+	This is the case B below::
+
+		import time
+		# case A: regular variables
+		tg = bld(rule='echo ${FOO}')
+		tg.env.FOO = '%s' % time.time()
+		# case B
+		bld(rule='echo ${gen.foo}', foo='%s' % time.time())
+
+	:param vars: env variables such as CXXFLAGS or gen.foo
+	:type vars: list of string
+	:return: A sig_vars method relevant for dependencies if adequate, else None
+	:rtype: A function, or None in most cases
+	"""
+	buf = []
+	for x in sorted(vars):
+		if x[:3] in ('tsk', 'gen', 'bld'):
+			buf.append('buf.append(%s)' % x)
+	if buf:
+		return funex(COMPILE_TEMPLATE_SIG_VARS % '\n\t'.join(buf))
+	return None
+
+def task_factory(name, func=None, vars=None, color='GREEN', ext_in=[], ext_out=[], before=[], after=[], shell=False, scan=None):
+	"""
+	Returns a new task subclass with the function ``run`` compiled from the line given.
+
+	:param func: method run
+	:type func: string or function
+	:param vars: list of variables to hash
+	:type vars: list of string
+	:param color: color to use
+	:type color: string
+	:param shell: when *func* is a string, enable/disable the use of the shell
+	:type shell: bool
+	:param scan: method scan
+	:type scan: function
+	:rtype: :py:class:`waflib.Task.Task`
+	"""
+
+	params = {
+		'vars': vars or [], # function arguments are static, and this one may be modified by the class
+		'color': color,
+		'name': name,
+		'shell': shell,
+		'scan': scan,
+	}
+
+	if isinstance(func, str) or isinstance(func, tuple):
+		params['run_str'] = func
+	else:
+		params['run'] = func
+
+	cls = type(Task)(name, (Task,), params)
+	classes[name] = cls
+
+	if ext_in:
+		cls.ext_in = Utils.to_list(ext_in)
+	if ext_out:
+		cls.ext_out = Utils.to_list(ext_out)
+	if before:
+		cls.before = Utils.to_list(before)
+	if after:
+		cls.after = Utils.to_list(after)
+
+	return cls
+
+def deep_inputs(cls):
+	"""
+	Task class decorator to enable rebuilds on input files task signatures
+	"""
+	def sig_explicit_deps(self):
+		Task.sig_explicit_deps(self)
+		Task.sig_deep_inputs(self)
+	cls.sig_explicit_deps = sig_explicit_deps
+	return cls
+
+TaskBase = Task
+"Provided for compatibility reasons, TaskBase should not be used"
+
+class TaskSemaphore(object):
+	"""
+	Task semaphores provide a simple and efficient way of throttling the amount of
+	a particular task to run concurrently. The throttling value is capped
+	by the amount of maximum jobs, so for example, a `TaskSemaphore(10)`
+	has no effect in a `-j2` build.
+
+	Task semaphores are typically specified on the task class level::
+
+		class compile(waflib.Task.Task):
+			semaphore = waflib.Task.TaskSemaphore(2)
+			run_str = 'touch ${TGT}'
+
+	Task semaphores are meant to be used by the build scheduler in the main
+	thread, so there are no guarantees of thread safety.
+	"""
+	def __init__(self, num):
+		"""
+		:param num: maximum value of concurrent tasks
+		:type num: int
+		"""
+		self.num = num
+		self.locking = set()
+		self.waiting = set()
+
+	def is_locked(self):
+		"""Returns True if this semaphore cannot be acquired by more tasks"""
+		return len(self.locking) >= self.num
+
+	def acquire(self, tsk):
+		"""
+		Mark the semaphore as used by the given task (not re-entrant).
+
+		:param tsk: task object
+		:type tsk: :py:class:`waflib.Task.Task`
+		:raises: :py:class:`IndexError` in case the resource is already acquired
+		"""
+		if self.is_locked():
+			raise IndexError('Cannot lock more %r' % self.locking)
+		self.locking.add(tsk)
+
+	def release(self, tsk):
+		"""
+		Mark the semaphore as unused by the given task.
+
+		:param tsk: task object
+		:type tsk: :py:class:`waflib.Task.Task`
+		:raises: :py:class:`KeyError` in case the resource is not acquired by the task
+		"""
+		self.locking.remove(tsk)
+
diff --git a/TaskGen.py b/TaskGen.py
new file mode 100644
index 0000000..a74e643
--- /dev/null
+++ b/TaskGen.py
@@ -0,0 +1,917 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Task generators
+
+The class :py:class:`waflib.TaskGen.task_gen` encapsulates the creation of task objects (low-level code)
+The instances can have various parameters, but the creation of task nodes (Task.py)
+is deferred. To achieve this, various methods are called from the method "apply"
+"""
+
+import copy, re, os, functools
+from waflib import Task, Utils, Logs, Errors, ConfigSet, Node
+
+feats = Utils.defaultdict(set)
+"""remember the methods declaring features"""
+
+HEADER_EXTS = ['.h', '.hpp', '.hxx', '.hh']
+
+class task_gen(object):
+	"""
+	Instances of this class create :py:class:`waflib.Task.Task` when
+	calling the method :py:meth:`waflib.TaskGen.task_gen.post` from the main thread.
+	A few notes:
+
+	* The methods to call (*self.meths*) can be specified dynamically (removing, adding, ..)
+	* The 'features' are used to add methods to self.meths and then execute them
+	* The attribute 'path' is a node representing the location of the task generator
+	* The tasks created are added to the attribute *tasks*
+	* The attribute 'idx' is a counter of task generators in the same path
+	"""
+
+	mappings = Utils.ordered_iter_dict()
+	"""Mappings are global file extension mappings that are retrieved in the order of definition"""
+
+	prec = Utils.defaultdict(set)
+	"""Dict that holds the precedence execution rules for task generator methods"""
+
+	def __init__(self, *k, **kw):
+		"""
+		Task generator objects predefine various attributes (source, target) for possible
+		processing by process_rule (make-like rules) or process_source (extensions, misc methods)
+
+		Tasks are stored on the attribute 'tasks'. They are created by calling methods
+		listed in ``self.meths`` or referenced in the attribute ``features``
+		A topological sort is performed to execute the methods in correct order.
+
+		The extra key/value elements passed in ``kw`` are set as attributes
+		"""
+		self.source = []
+		self.target = ''
+
+		self.meths = []
+		"""
+		List of method names to execute (internal)
+		"""
+
+		self.features = []
+		"""
+		List of feature names for bringing new methods in
+		"""
+
+		self.tasks = []
+		"""
+		Tasks created are added to this list
+		"""
+
+		if not 'bld' in kw:
+			# task generators without a build context :-/
+			self.env = ConfigSet.ConfigSet()
+			self.idx = 0
+			self.path = None
+		else:
+			self.bld = kw['bld']
+			self.env = self.bld.env.derive()
+			self.path = self.bld.path # emulate chdir when reading scripts
+
+			# Provide a unique index per folder
+			# This is part of a measure to prevent output file name collisions
+			path = self.path.abspath()
+			try:
+				self.idx = self.bld.idx[path] = self.bld.idx.get(path, 0) + 1
+			except AttributeError:
+				self.bld.idx = {}
+				self.idx = self.bld.idx[path] = 1
+
+			# Record the global task generator count
+			try:
+				self.tg_idx_count = self.bld.tg_idx_count = self.bld.tg_idx_count + 1
+			except AttributeError:
+				self.tg_idx_count = self.bld.tg_idx_count = 1
+
+		for key, val in kw.items():
+			setattr(self, key, val)
+
+	def __str__(self):
+		"""Debugging helper"""
+		return "<task_gen %r declared in %s>" % (self.name, self.path.abspath())
+
+	def __repr__(self):
+		"""Debugging helper"""
+		lst = []
+		for x in self.__dict__:
+			if x not in ('env', 'bld', 'compiled_tasks', 'tasks'):
+				lst.append("%s=%s" % (x, repr(getattr(self, x))))
+		return "bld(%s) in %s" % (", ".join(lst), self.path.abspath())
+
+	def get_cwd(self):
+		"""
+		Current working directory for the task generator, defaults to the build directory.
+		This is still used in a few places but it should disappear at some point as the classes
+		define their own working directory.
+
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		return self.bld.bldnode
+
+	def get_name(self):
+		"""
+		If the attribute ``name`` is not set on the instance,
+		the name is computed from the target name::
+
+			def build(bld):
+				x = bld(name='foo')
+				x.get_name() # foo
+				y = bld(target='bar')
+				y.get_name() # bar
+
+		:rtype: string
+		:return: name of this task generator
+		"""
+		try:
+			return self._name
+		except AttributeError:
+			if isinstance(self.target, list):
+				lst = [str(x) for x in self.target]
+				name = self._name = ','.join(lst)
+			else:
+				name = self._name = str(self.target)
+			return name
+	def set_name(self, name):
+		self._name = name
+
+	name = property(get_name, set_name)
+
+	def to_list(self, val):
+		"""
+		Ensures that a parameter is a list, see :py:func:`waflib.Utils.to_list`
+
+		:type val: string or list of string
+		:param val: input to return as a list
+		:rtype: list
+		"""
+		if isinstance(val, str):
+			return val.split()
+		else:
+			return val
+
+	def post(self):
+		"""
+		Creates tasks for this task generators. The following operations are performed:
+
+		#. The body of this method is called only once and sets the attribute ``posted``
+		#. The attribute ``features`` is used to add more methods in ``self.meths``
+		#. The methods are sorted by the precedence table ``self.prec`` or `:waflib:attr:waflib.TaskGen.task_gen.prec`
+		#. The methods are then executed in order
+		#. The tasks created are added to :py:attr:`waflib.TaskGen.task_gen.tasks`
+		"""
+		if getattr(self, 'posted', None):
+			return False
+		self.posted = True
+
+		keys = set(self.meths)
+		keys.update(feats['*'])
+
+		# add the methods listed in the features
+		self.features = Utils.to_list(self.features)
+		for x in self.features:
+			st = feats[x]
+			if st:
+				keys.update(st)
+			elif not x in Task.classes:
+				Logs.warn('feature %r does not exist - bind at least one method to it?', x)
+
+		# copy the precedence table
+		prec = {}
+		prec_tbl = self.prec
+		for x in prec_tbl:
+			if x in keys:
+				prec[x] = prec_tbl[x]
+
+		# elements disconnected
+		tmp = []
+		for a in keys:
+			for x in prec.values():
+				if a in x:
+					break
+			else:
+				tmp.append(a)
+
+		tmp.sort(reverse=True)
+
+		# topological sort
+		out = []
+		while tmp:
+			e = tmp.pop()
+			if e in keys:
+				out.append(e)
+			try:
+				nlst = prec[e]
+			except KeyError:
+				pass
+			else:
+				del prec[e]
+				for x in nlst:
+					for y in prec:
+						if x in prec[y]:
+							break
+					else:
+						tmp.append(x)
+						tmp.sort(reverse=True)
+
+		if prec:
+			buf = ['Cycle detected in the method execution:']
+			for k, v in prec.items():
+				buf.append('- %s after %s' % (k, [x for x in v if x in prec]))
+			raise Errors.WafError('\n'.join(buf))
+		self.meths = out
+
+		# then we run the methods in order
+		Logs.debug('task_gen: posting %s %d', self, id(self))
+		for x in out:
+			try:
+				v = getattr(self, x)
+			except AttributeError:
+				raise Errors.WafError('%r is not a valid task generator method' % x)
+			Logs.debug('task_gen: -> %s (%d)', x, id(self))
+			v()
+
+		Logs.debug('task_gen: posted %s', self.name)
+		return True
+
+	def get_hook(self, node):
+		"""
+		Returns the ``@extension`` method to call for a Node of a particular extension.
+
+		:param node: Input file to process
+		:type node: :py:class:`waflib.Tools.Node.Node`
+		:return: A method able to process the input node by looking at the extension
+		:rtype: function
+		"""
+		name = node.name
+		for k in self.mappings:
+			try:
+				if name.endswith(k):
+					return self.mappings[k]
+			except TypeError:
+				# regexps objects
+				if k.match(name):
+					return self.mappings[k]
+		keys = list(self.mappings.keys())
+		raise Errors.WafError("File %r has no mapping in %r (load a waf tool?)" % (node, keys))
+
+	def create_task(self, name, src=None, tgt=None, **kw):
+		"""
+		Creates task instances.
+
+		:param name: task class name
+		:type name: string
+		:param src: input nodes
+		:type src: list of :py:class:`waflib.Tools.Node.Node`
+		:param tgt: output nodes
+		:type tgt: list of :py:class:`waflib.Tools.Node.Node`
+		:return: A task object
+		:rtype: :py:class:`waflib.Task.Task`
+		"""
+		task = Task.classes[name](env=self.env.derive(), generator=self)
+		if src:
+			task.set_inputs(src)
+		if tgt:
+			task.set_outputs(tgt)
+		task.__dict__.update(kw)
+		self.tasks.append(task)
+		return task
+
+	def clone(self, env):
+		"""
+		Makes a copy of a task generator. Once the copy is made, it is necessary to ensure that the
+		it does not create the same output files as the original, or the same files may
+		be compiled several times.
+
+		:param env: A configuration set
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		:return: A copy
+		:rtype: :py:class:`waflib.TaskGen.task_gen`
+		"""
+		newobj = self.bld()
+		for x in self.__dict__:
+			if x in ('env', 'bld'):
+				continue
+			elif x in ('path', 'features'):
+				setattr(newobj, x, getattr(self, x))
+			else:
+				setattr(newobj, x, copy.copy(getattr(self, x)))
+
+		newobj.posted = False
+		if isinstance(env, str):
+			newobj.env = self.bld.all_envs[env].derive()
+		else:
+			newobj.env = env.derive()
+
+		return newobj
+
+def declare_chain(name='', rule=None, reentrant=None, color='BLUE',
+	ext_in=[], ext_out=[], before=[], after=[], decider=None, scan=None, install_path=None, shell=False):
+	"""
+	Creates a new mapping and a task class for processing files by extension.
+	See Tools/flex.py for an example.
+
+	:param name: name for the task class
+	:type name: string
+	:param rule: function to execute or string to be compiled in a function
+	:type rule: string or function
+	:param reentrant: re-inject the output file in the process (done automatically, set to 0 to disable)
+	:type reentrant: int
+	:param color: color for the task output
+	:type color: string
+	:param ext_in: execute the task only after the files of such extensions are created
+	:type ext_in: list of string
+	:param ext_out: execute the task only before files of such extensions are processed
+	:type ext_out: list of string
+	:param before: execute instances of this task before classes of the given names
+	:type before: list of string
+	:param after: execute instances of this task after classes of the given names
+	:type after: list of string
+	:param decider: if present, function that returns a list of output file extensions (overrides ext_out for output files, but not for the build order)
+	:type decider: function
+	:param scan: scanner function for the task
+	:type scan: function
+	:param install_path: installation path for the output nodes
+	:type install_path: string
+	"""
+	ext_in = Utils.to_list(ext_in)
+	ext_out = Utils.to_list(ext_out)
+	if not name:
+		name = rule
+	cls = Task.task_factory(name, rule, color=color, ext_in=ext_in, ext_out=ext_out, before=before, after=after, scan=scan, shell=shell)
+
+	def x_file(self, node):
+		if ext_in:
+			_ext_in = ext_in[0]
+
+		tsk = self.create_task(name, node)
+		cnt = 0
+
+		ext = decider(self, node) if decider else cls.ext_out
+		for x in ext:
+			k = node.change_ext(x, ext_in=_ext_in)
+			tsk.outputs.append(k)
+
+			if reentrant != None:
+				if cnt < int(reentrant):
+					self.source.append(k)
+			else:
+				# reinject downstream files into the build
+				for y in self.mappings: # ~ nfile * nextensions :-/
+					if k.name.endswith(y):
+						self.source.append(k)
+						break
+			cnt += 1
+
+		if install_path:
+			self.install_task = self.add_install_files(install_to=install_path, install_from=tsk.outputs)
+		return tsk
+
+	for x in cls.ext_in:
+		task_gen.mappings[x] = x_file
+	return x_file
+
+def taskgen_method(func):
+	"""
+	Decorator that registers method as a task generator method.
+	The function must accept a task generator as first parameter::
+
+		from waflib.TaskGen import taskgen_method
+		@taskgen_method
+		def mymethod(self):
+			pass
+
+	:param func: task generator method to add
+	:type func: function
+	:rtype: function
+	"""
+	setattr(task_gen, func.__name__, func)
+	return func
+
+def feature(*k):
+	"""
+	Decorator that registers a task generator method that will be executed when the
+	object attribute ``feature`` contains the corresponding key(s)::
+
+		from waflib.Task import feature
+		@feature('myfeature')
+		def myfunction(self):
+			print('that is my feature!')
+		def build(bld):
+			bld(features='myfeature')
+
+	:param k: feature names
+	:type k: list of string
+	"""
+	def deco(func):
+		setattr(task_gen, func.__name__, func)
+		for name in k:
+			feats[name].update([func.__name__])
+		return func
+	return deco
+
+def before_method(*k):
+	"""
+	Decorator that registera task generator method which will be executed
+	before the functions of given name(s)::
+
+		from waflib.TaskGen import feature, before
+		@feature('myfeature')
+		@before_method('fun2')
+		def fun1(self):
+			print('feature 1!')
+		@feature('myfeature')
+		def fun2(self):
+			print('feature 2!')
+		def build(bld):
+			bld(features='myfeature')
+
+	:param k: method names
+	:type k: list of string
+	"""
+	def deco(func):
+		setattr(task_gen, func.__name__, func)
+		for fun_name in k:
+			task_gen.prec[func.__name__].add(fun_name)
+		return func
+	return deco
+before = before_method
+
+def after_method(*k):
+	"""
+	Decorator that registers a task generator method which will be executed
+	after the functions of given name(s)::
+
+		from waflib.TaskGen import feature, after
+		@feature('myfeature')
+		@after_method('fun2')
+		def fun1(self):
+			print('feature 1!')
+		@feature('myfeature')
+		def fun2(self):
+			print('feature 2!')
+		def build(bld):
+			bld(features='myfeature')
+
+	:param k: method names
+	:type k: list of string
+	"""
+	def deco(func):
+		setattr(task_gen, func.__name__, func)
+		for fun_name in k:
+			task_gen.prec[fun_name].add(func.__name__)
+		return func
+	return deco
+after = after_method
+
+def extension(*k):
+	"""
+	Decorator that registers a task generator method which will be invoked during
+	the processing of source files for the extension given::
+
+		from waflib import Task
+		class mytask(Task):
+			run_str = 'cp ${SRC} ${TGT}'
+		@extension('.moo')
+		def create_maa_file(self, node):
+			self.create_task('mytask', node, node.change_ext('.maa'))
+		def build(bld):
+			bld(source='foo.moo')
+	"""
+	def deco(func):
+		setattr(task_gen, func.__name__, func)
+		for x in k:
+			task_gen.mappings[x] = func
+		return func
+	return deco
+
+@taskgen_method
+def to_nodes(self, lst, path=None):
+	"""
+	Flatten the input list of string/nodes/lists into a list of nodes.
+
+	It is used by :py:func:`waflib.TaskGen.process_source` and :py:func:`waflib.TaskGen.process_rule`.
+	It is designed for source files, for folders, see :py:func:`waflib.Tools.ccroot.to_incnodes`:
+
+	:param lst: input list
+	:type lst: list of string and nodes
+	:param path: path from which to search the nodes (by default, :py:attr:`waflib.TaskGen.task_gen.path`)
+	:type path: :py:class:`waflib.Tools.Node.Node`
+	:rtype: list of :py:class:`waflib.Tools.Node.Node`
+	"""
+	tmp = []
+	path = path or self.path
+	find = path.find_resource
+
+	if isinstance(lst, Node.Node):
+		lst = [lst]
+
+	for x in Utils.to_list(lst):
+		if isinstance(x, str):
+			node = find(x)
+		elif hasattr(x, 'name'):
+			node = x
+		else:
+			tmp.extend(self.to_nodes(x))
+			continue
+		if not node:
+			raise Errors.WafError('source not found: %r in %r' % (x, self))
+		tmp.append(node)
+	return tmp
+
+@feature('*')
+def process_source(self):
+	"""
+	Processes each element in the attribute ``source`` by extension.
+
+	#. The *source* list is converted through :py:meth:`waflib.TaskGen.to_nodes` to a list of :py:class:`waflib.Node.Node` first.
+	#. File extensions are mapped to methods having the signature: ``def meth(self, node)`` by :py:meth:`waflib.TaskGen.extension`
+	#. The method is retrieved through :py:meth:`waflib.TaskGen.task_gen.get_hook`
+	#. When called, the methods may modify self.source to append more source to process
+	#. The mappings can map an extension or a filename (see the code below)
+	"""
+	self.source = self.to_nodes(getattr(self, 'source', []))
+	for node in self.source:
+		self.get_hook(node)(self, node)
+
+@feature('*')
+@before_method('process_source')
+def process_rule(self):
+	"""
+	Processes the attribute ``rule``. When present, :py:meth:`waflib.TaskGen.process_source` is disabled::
+
+		def build(bld):
+			bld(rule='cp ${SRC} ${TGT}', source='wscript', target='bar.txt')
+
+	Main attributes processed:
+
+	* rule: command to execute, it can be a tuple of strings for multiple commands
+	* chmod: permissions for the resulting files (integer value such as Utils.O755)
+	* shell: set to False to execute the command directly (default is True to use a shell)
+	* scan: scanner function
+	* vars: list of variables to trigger rebuilds, such as CFLAGS
+	* cls_str: string to display when executing the task
+	* cls_keyword: label to display when executing the task
+	* cache_rule: by default, try to re-use similar classes, set to False to disable
+	* source: list of Node or string objects representing the source files required by this task
+	* target: list of Node or string objects representing the files that this task creates
+	* cwd: current working directory (Node or string)
+	* stdout: standard output, set to None to prevent waf from capturing the text
+	* stderr: standard error, set to None to prevent waf from capturing the text
+	* timeout: timeout for command execution (Python 3)
+	* always: whether to always run the command (False by default)
+	* deep_inputs: whether the task must depend on the input file tasks too (False by default)
+	"""
+	if not getattr(self, 'rule', None):
+		return
+
+	# create the task class
+	name = str(getattr(self, 'name', None) or self.target or getattr(self.rule, '__name__', self.rule))
+
+	# or we can put the class in a cache for performance reasons
+	try:
+		cache = self.bld.cache_rule_attr
+	except AttributeError:
+		cache = self.bld.cache_rule_attr = {}
+
+	chmod = getattr(self, 'chmod', None)
+	shell = getattr(self, 'shell', True)
+	color = getattr(self, 'color', 'BLUE')
+	scan = getattr(self, 'scan', None)
+	_vars = getattr(self, 'vars', [])
+	cls_str = getattr(self, 'cls_str', None)
+	cls_keyword = getattr(self, 'cls_keyword', None)
+	use_cache = getattr(self, 'cache_rule', 'True')
+	deep_inputs = getattr(self, 'deep_inputs', False)
+
+	scan_val = has_deps = hasattr(self, 'deps')
+	if scan:
+		scan_val = id(scan)
+
+	key = Utils.h_list((name, self.rule, chmod, shell, color, cls_str, cls_keyword, scan_val, _vars, deep_inputs))
+
+	cls = None
+	if use_cache:
+		try:
+			cls = cache[key]
+		except KeyError:
+			pass
+	if not cls:
+		rule = self.rule
+		if chmod is not None:
+			def chmod_fun(tsk):
+				for x in tsk.outputs:
+					os.chmod(x.abspath(), tsk.generator.chmod)
+			if isinstance(rule, tuple):
+				rule = list(rule)
+				rule.append(chmod_fun)
+				rule = tuple(rule)
+			else:
+				rule = (rule, chmod_fun)
+
+		cls = Task.task_factory(name, rule, _vars, shell=shell, color=color)
+
+		if cls_str:
+			setattr(cls, '__str__', self.cls_str)
+
+		if cls_keyword:
+			setattr(cls, 'keyword', self.cls_keyword)
+
+		if deep_inputs:
+			Task.deep_inputs(cls)
+
+		if scan:
+			cls.scan = self.scan
+		elif has_deps:
+			def scan(self):
+				nodes = []
+				for x in self.generator.to_list(getattr(self.generator, 'deps', None)):
+					node = self.generator.path.find_resource(x)
+					if not node:
+						self.generator.bld.fatal('Could not find %r (was it declared?)' % x)
+					nodes.append(node)
+				return [nodes, []]
+			cls.scan = scan
+
+		if use_cache:
+			cache[key] = cls
+
+	# now create one instance
+	tsk = self.create_task(name)
+
+	for x in ('after', 'before', 'ext_in', 'ext_out'):
+		setattr(tsk, x, getattr(self, x, []))
+
+	if hasattr(self, 'stdout'):
+		tsk.stdout = self.stdout
+
+	if hasattr(self, 'stderr'):
+		tsk.stderr = self.stderr
+
+	if getattr(self, 'timeout', None):
+		tsk.timeout = self.timeout
+
+	if getattr(self, 'always', None):
+		tsk.always_run = True
+
+	if getattr(self, 'target', None):
+		if isinstance(self.target, str):
+			self.target = self.target.split()
+		if not isinstance(self.target, list):
+			self.target = [self.target]
+		for x in self.target:
+			if isinstance(x, str):
+				tsk.outputs.append(self.path.find_or_declare(x))
+			else:
+				x.parent.mkdir() # if a node was given, create the required folders
+				tsk.outputs.append(x)
+		if getattr(self, 'install_path', None):
+			self.install_task = self.add_install_files(install_to=self.install_path,
+				install_from=tsk.outputs, chmod=getattr(self, 'chmod', Utils.O644))
+
+	if getattr(self, 'source', None):
+		tsk.inputs = self.to_nodes(self.source)
+		# bypass the execution of process_source by setting the source to an empty list
+		self.source = []
+
+	if getattr(self, 'cwd', None):
+		tsk.cwd = self.cwd
+
+	if isinstance(tsk.run, functools.partial):
+		# Python documentation says: "partial objects defined in classes
+		# behave like static methods and do not transform into bound
+		# methods during instance attribute look-up."
+		tsk.run = functools.partial(tsk.run, tsk)
+
+@feature('seq')
+def sequence_order(self):
+	"""
+	Adds a strict sequential constraint between the tasks generated by task generators.
+	It works because task generators are posted in order.
+	It will not post objects which belong to other folders.
+
+	Example::
+
+		bld(features='javac seq')
+		bld(features='jar seq')
+
+	To start a new sequence, set the attribute seq_start, for example::
+
+		obj = bld(features='seq')
+		obj.seq_start = True
+
+	Note that the method is executed in last position. This is more an
+	example than a widely-used solution.
+	"""
+	if self.meths and self.meths[-1] != 'sequence_order':
+		self.meths.append('sequence_order')
+		return
+
+	if getattr(self, 'seq_start', None):
+		return
+
+	# all the tasks previously declared must be run before these
+	if getattr(self.bld, 'prev', None):
+		self.bld.prev.post()
+		for x in self.bld.prev.tasks:
+			for y in self.tasks:
+				y.set_run_after(x)
+
+	self.bld.prev = self
+
+
+re_m4 = re.compile('@(\w+)@', re.M)
+
+class subst_pc(Task.Task):
+	"""
+	Creates *.pc* files from *.pc.in*. The task is executed whenever an input variable used
+	in the substitution changes.
+	"""
+
+	def force_permissions(self):
+		"Private for the time being, we will probably refactor this into run_str=[run1,chmod]"
+		if getattr(self.generator, 'chmod', None):
+			for x in self.outputs:
+				os.chmod(x.abspath(), self.generator.chmod)
+
+	def run(self):
+		"Substitutes variables in a .in file"
+
+		if getattr(self.generator, 'is_copy', None):
+			for i, x in enumerate(self.outputs):
+				x.write(self.inputs[i].read('rb'), 'wb')
+				stat = os.stat(self.inputs[i].abspath()) # Preserve mtime of the copy
+				os.utime(self.outputs[i].abspath(), (stat.st_atime, stat.st_mtime))
+			self.force_permissions()
+			return None
+
+		if getattr(self.generator, 'fun', None):
+			ret = self.generator.fun(self)
+			if not ret:
+				self.force_permissions()
+			return ret
+
+		code = self.inputs[0].read(encoding=getattr(self.generator, 'encoding', 'latin-1'))
+		if getattr(self.generator, 'subst_fun', None):
+			code = self.generator.subst_fun(self, code)
+			if code is not None:
+				self.outputs[0].write(code, encoding=getattr(self.generator, 'encoding', 'latin-1'))
+			self.force_permissions()
+			return None
+
+		# replace all % by %% to prevent errors by % signs
+		code = code.replace('%', '%%')
+
+		# extract the vars foo into lst and replace @foo@ by %(foo)s
+		lst = []
+		def repl(match):
+			g = match.group
+			if g(1):
+				lst.append(g(1))
+				return "%%(%s)s" % g(1)
+			return ''
+		code = getattr(self.generator, 're_m4', re_m4).sub(repl, code)
+
+		try:
+			d = self.generator.dct
+		except AttributeError:
+			d = {}
+			for x in lst:
+				tmp = getattr(self.generator, x, '') or self.env[x] or self.env[x.upper()]
+				try:
+					tmp = ''.join(tmp)
+				except TypeError:
+					tmp = str(tmp)
+				d[x] = tmp
+
+		code = code % d
+		self.outputs[0].write(code, encoding=getattr(self.generator, 'encoding', 'latin-1'))
+		self.generator.bld.raw_deps[self.uid()] = lst
+
+		# make sure the signature is updated
+		try:
+			delattr(self, 'cache_sig')
+		except AttributeError:
+			pass
+
+		self.force_permissions()
+
+	def sig_vars(self):
+		"""
+		Compute a hash (signature) of the variables used in the substitution
+		"""
+		bld = self.generator.bld
+		env = self.env
+		upd = self.m.update
+
+		if getattr(self.generator, 'fun', None):
+			upd(Utils.h_fun(self.generator.fun).encode())
+		if getattr(self.generator, 'subst_fun', None):
+			upd(Utils.h_fun(self.generator.subst_fun).encode())
+
+		# raw_deps: persistent custom values returned by the scanner
+		vars = self.generator.bld.raw_deps.get(self.uid(), [])
+
+		# hash both env vars and task generator attributes
+		act_sig = bld.hash_env_vars(env, vars)
+		upd(act_sig)
+
+		lst = [getattr(self.generator, x, '') for x in vars]
+		upd(Utils.h_list(lst))
+
+		return self.m.digest()
+
+@extension('.pc.in')
+def add_pcfile(self, node):
+	"""
+	Processes *.pc.in* files to *.pc*. Installs the results to ``${PREFIX}/lib/pkgconfig/`` by default
+
+		def build(bld):
+			bld(source='foo.pc.in', install_path='${LIBDIR}/pkgconfig/')
+	"""
+	tsk = self.create_task('subst_pc', node, node.change_ext('.pc', '.pc.in'))
+	self.install_task = self.add_install_files(
+		install_to=getattr(self, 'install_path', '${LIBDIR}/pkgconfig/'), install_from=tsk.outputs)
+
+class subst(subst_pc):
+	pass
+
+@feature('subst')
+@before_method('process_source', 'process_rule')
+def process_subst(self):
+	"""
+	Defines a transformation that substitutes the contents of *source* files to *target* files::
+
+		def build(bld):
+			bld(
+				features='subst',
+				source='foo.c.in',
+				target='foo.c',
+				install_path='${LIBDIR}/pkgconfig',
+				VAR = 'val'
+			)
+
+	The input files are supposed to contain macros of the form *@VAR@*, where *VAR* is an argument
+	of the task generator object.
+
+	This method overrides the processing by :py:meth:`waflib.TaskGen.process_source`.
+	"""
+
+	src = Utils.to_list(getattr(self, 'source', []))
+	if isinstance(src, Node.Node):
+		src = [src]
+	tgt = Utils.to_list(getattr(self, 'target', []))
+	if isinstance(tgt, Node.Node):
+		tgt = [tgt]
+	if len(src) != len(tgt):
+		raise Errors.WafError('invalid number of source/target for %r' % self)
+
+	for x, y in zip(src, tgt):
+		if not x or not y:
+			raise Errors.WafError('null source or target for %r' % self)
+		a, b = None, None
+
+		if isinstance(x, str) and isinstance(y, str) and x == y:
+			a = self.path.find_node(x)
+			b = self.path.get_bld().make_node(y)
+			if not os.path.isfile(b.abspath()):
+				b.parent.mkdir()
+		else:
+			if isinstance(x, str):
+				a = self.path.find_resource(x)
+			elif isinstance(x, Node.Node):
+				a = x
+			if isinstance(y, str):
+				b = self.path.find_or_declare(y)
+			elif isinstance(y, Node.Node):
+				b = y
+
+		if not a:
+			raise Errors.WafError('could not find %r for %r' % (x, self))
+
+		tsk = self.create_task('subst', a, b)
+		for k in ('after', 'before', 'ext_in', 'ext_out'):
+			val = getattr(self, k, None)
+			if val:
+				setattr(tsk, k, val)
+
+		# paranoid safety measure for the general case foo.in->foo.h with ambiguous dependencies
+		for xt in HEADER_EXTS:
+			if b.name.endswith(xt):
+				tsk.ext_in = tsk.ext_in + ['.h']
+				break
+
+		inst_to = getattr(self, 'install_path', None)
+		if inst_to:
+			self.install_task = self.add_install_files(install_to=inst_to,
+				install_from=b, chmod=getattr(self, 'chmod', Utils.O644))
+
+	self.source = []
+
diff --git a/Tools/__init__.py b/Tools/__init__.py
new file mode 100644
index 0000000..079df35
--- /dev/null
+++ b/Tools/__init__.py
@@ -0,0 +1,3 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
diff --git a/Tools/ar.py b/Tools/ar.py
new file mode 100644
index 0000000..b39b645
--- /dev/null
+++ b/Tools/ar.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+# Ralf Habacker, 2006 (rh)
+
+"""
+The **ar** program creates static libraries. This tool is almost always loaded
+from others (C, C++, D, etc) for static library support.
+"""
+
+from waflib.Configure import conf
+
+@conf
+def find_ar(conf):
+	"""Configuration helper used by C/C++ tools to enable the support for static libraries"""
+	conf.load('ar')
+
+def configure(conf):
+	"""Finds the ar program and sets the default flags in ``conf.env.ARFLAGS``"""
+	conf.find_program('ar', var='AR')
+	conf.add_os_flags('ARFLAGS')
+	if not conf.env.ARFLAGS:
+		conf.env.ARFLAGS = ['rcs']
+
diff --git a/Tools/asm.py b/Tools/asm.py
new file mode 100644
index 0000000..b6f26fb
--- /dev/null
+++ b/Tools/asm.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2008-2018 (ita)
+
+"""
+Assembly support, used by tools such as gas and nasm
+
+To declare targets using assembly::
+
+	def configure(conf):
+		conf.load('gcc gas')
+
+	def build(bld):
+		bld(
+			features='c cstlib asm',
+			source = 'test.S',
+			target = 'asmtest')
+
+		bld(
+			features='asm asmprogram',
+			source = 'test.S',
+			target = 'asmtest')
+
+Support for pure asm programs and libraries should also work::
+
+	def configure(conf):
+		conf.load('nasm')
+		conf.find_program('ld', 'ASLINK')
+
+	def build(bld):
+		bld(
+			features='asm asmprogram',
+			source = 'test.S',
+			target = 'asmtest')
+"""
+
+from waflib import Task
+from waflib.Tools.ccroot import link_task, stlink_task
+from waflib.TaskGen import extension
+
+class asm(Task.Task):
+	"""
+	Compiles asm files by gas/nasm/yasm/...
+	"""
+	color = 'BLUE'
+	run_str = '${AS} ${ASFLAGS} ${ASMPATH_ST:INCPATHS} ${DEFINES_ST:DEFINES} ${AS_SRC_F}${SRC} ${AS_TGT_F}${TGT}'
+
+@extension('.s', '.S', '.asm', '.ASM', '.spp', '.SPP')
+def asm_hook(self, node):
+	"""
+	Binds the asm extension to the asm task
+
+	:param node: input file
+	:type node: :py:class:`waflib.Node.Node`
+	"""
+	return self.create_compiled_task('asm', node)
+
+class asmprogram(link_task):
+	"Links object files into a c program"
+	run_str = '${ASLINK} ${ASLINKFLAGS} ${ASLNK_TGT_F}${TGT} ${ASLNK_SRC_F}${SRC}'
+	ext_out = ['.bin']
+	inst_to = '${BINDIR}'
+
+class asmshlib(asmprogram):
+	"Links object files into a c shared library"
+	inst_to = '${LIBDIR}'
+
+class asmstlib(stlink_task):
+	"Links object files into a c static library"
+	pass # do not remove
+
+def configure(conf):
+	conf.env.ASMPATH_ST = '-I%s'
diff --git a/Tools/bison.py b/Tools/bison.py
new file mode 100644
index 0000000..eef56dc
--- /dev/null
+++ b/Tools/bison.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# John O'Meara, 2006
+# Thomas Nagy 2009-2018 (ita)
+
+"""
+The **bison** program is a code generator which creates C or C++ files.
+The generated files are compiled into object files.
+"""
+
+from waflib import Task
+from waflib.TaskGen import extension
+
+class bison(Task.Task):
+	"""Compiles bison files"""
+	color   = 'BLUE'
+	run_str = '${BISON} ${BISONFLAGS} ${SRC[0].abspath()} -o ${TGT[0].name}'
+	ext_out = ['.h'] # just to make sure
+
+@extension('.y', '.yc', '.yy')
+def big_bison(self, node):
+	"""
+	Creates a bison task, which must be executed from the directory of the output file.
+	"""
+	has_h = '-d' in self.env.BISONFLAGS
+
+	outs = []
+	if node.name.endswith('.yc'):
+		outs.append(node.change_ext('.tab.cc'))
+		if has_h:
+			outs.append(node.change_ext('.tab.hh'))
+	else:
+		outs.append(node.change_ext('.tab.c'))
+		if has_h:
+			outs.append(node.change_ext('.tab.h'))
+
+	tsk = self.create_task('bison', node, outs)
+	tsk.cwd = node.parent.get_bld()
+
+	# and the c/cxx file must be compiled too
+	self.source.append(outs[0])
+
+def configure(conf):
+	"""
+	Detects the *bison* program
+	"""
+	conf.find_program('bison', var='BISON')
+	conf.env.BISONFLAGS = ['-d']
+
diff --git a/Tools/c.py b/Tools/c.py
new file mode 100644
index 0000000..effd6b6
--- /dev/null
+++ b/Tools/c.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+
+"Base for c programs/libraries"
+
+from waflib import TaskGen, Task
+from waflib.Tools import c_preproc
+from waflib.Tools.ccroot import link_task, stlink_task
+
+@TaskGen.extension('.c')
+def c_hook(self, node):
+	"Binds the c file extensions create :py:class:`waflib.Tools.c.c` instances"
+	if not self.env.CC and self.env.CXX:
+		return self.create_compiled_task('cxx', node)
+	return self.create_compiled_task('c', node)
+
+class c(Task.Task):
+	"Compiles C files into object files"
+	run_str = '${CC} ${ARCH_ST:ARCH} ${CFLAGS} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${CPPPATH_ST:INCPATHS} ${DEFINES_ST:DEFINES} ${CC_SRC_F}${SRC} ${CC_TGT_F}${TGT[0].abspath()} ${CPPFLAGS}'
+	vars    = ['CCDEPS'] # unused variable to depend on, just in case
+	ext_in  = ['.h'] # set the build order easily by using ext_out=['.h']
+	scan    = c_preproc.scan
+
+class cprogram(link_task):
+	"Links object files into c programs"
+	run_str = '${LINK_CC} ${LINKFLAGS} ${CCLNK_SRC_F}${SRC} ${CCLNK_TGT_F}${TGT[0].abspath()} ${RPATH_ST:RPATH} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${FRAMEWORK_ST:FRAMEWORK} ${ARCH_ST:ARCH} ${STLIB_MARKER} ${STLIBPATH_ST:STLIBPATH} ${STLIB_ST:STLIB} ${SHLIB_MARKER} ${LIBPATH_ST:LIBPATH} ${LIB_ST:LIB} ${LDFLAGS}'
+	ext_out = ['.bin']
+	vars    = ['LINKDEPS']
+	inst_to = '${BINDIR}'
+
+class cshlib(cprogram):
+	"Links object files into c shared libraries"
+	inst_to = '${LIBDIR}'
+
+class cstlib(stlink_task):
+	"Links object files into a c static libraries"
+	pass # do not remove
+
diff --git a/Tools/c_aliases.py b/Tools/c_aliases.py
new file mode 100644
index 0000000..c9d5369
--- /dev/null
+++ b/Tools/c_aliases.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2015 (ita)
+
+"base for all c/c++ programs and libraries"
+
+from waflib import Utils, Errors
+from waflib.Configure import conf
+
+def get_extensions(lst):
+	"""
+	Returns the file extensions for the list of files given as input
+
+	:param lst: files to process
+	:list lst: list of string or :py:class:`waflib.Node.Node`
+	:return: list of file extensions
+	:rtype: list of string
+	"""
+	ret = []
+	for x in Utils.to_list(lst):
+		if not isinstance(x, str):
+			x = x.name
+		ret.append(x[x.rfind('.') + 1:])
+	return ret
+
+def sniff_features(**kw):
+	"""
+	Computes and returns the features required for a task generator by
+	looking at the file extensions. This aimed for C/C++ mainly::
+
+		snif_features(source=['foo.c', 'foo.cxx'], type='shlib')
+		# returns  ['cxx', 'c', 'cxxshlib', 'cshlib']
+
+	:param source: source files to process
+	:type source: list of string or :py:class:`waflib.Node.Node`
+	:param type: object type in *program*, *shlib* or *stlib*
+	:type type: string
+	:return: the list of features for a task generator processing the source files
+	:rtype: list of string
+	"""
+	exts = get_extensions(kw['source'])
+	typ = kw['typ']
+	feats = []
+
+	# watch the order, cxx will have the precedence
+	for x in 'cxx cpp c++ cc C'.split():
+		if x in exts:
+			feats.append('cxx')
+			break
+
+	if 'c' in exts or 'vala' in exts or 'gs' in exts:
+		feats.append('c')
+
+	for x in 'f f90 F F90 for FOR'.split():
+		if x in exts:
+			feats.append('fc')
+			break
+
+	if 'd' in exts:
+		feats.append('d')
+
+	if 'java' in exts:
+		feats.append('java')
+		return 'java'
+
+	if typ in ('program', 'shlib', 'stlib'):
+		will_link = False
+		for x in feats:
+			if x in ('cxx', 'd', 'fc', 'c'):
+				feats.append(x + typ)
+				will_link = True
+		if not will_link and not kw.get('features', []):
+			raise Errors.WafError('Cannot link from %r, try passing eg: features="c cprogram"?' % kw)
+	return feats
+
+def set_features(kw, typ):
+	"""
+	Inserts data in the input dict *kw* based on existing data and on the type of target
+	required (typ).
+
+	:param kw: task generator parameters
+	:type kw: dict
+	:param typ: type of target
+	:type typ: string
+	"""
+	kw['typ'] = typ
+	kw['features'] = Utils.to_list(kw.get('features', [])) + Utils.to_list(sniff_features(**kw))
+
+@conf
+def program(bld, *k, **kw):
+	"""
+	Alias for creating programs by looking at the file extensions::
+
+		def build(bld):
+			bld.program(source='foo.c', target='app')
+			# equivalent to:
+			# bld(features='c cprogram', source='foo.c', target='app')
+
+	"""
+	set_features(kw, 'program')
+	return bld(*k, **kw)
+
+@conf
+def shlib(bld, *k, **kw):
+	"""
+	Alias for creating shared libraries by looking at the file extensions::
+
+		def build(bld):
+			bld.shlib(source='foo.c', target='app')
+			# equivalent to:
+			# bld(features='c cshlib', source='foo.c', target='app')
+
+	"""
+	set_features(kw, 'shlib')
+	return bld(*k, **kw)
+
+@conf
+def stlib(bld, *k, **kw):
+	"""
+	Alias for creating static libraries by looking at the file extensions::
+
+		def build(bld):
+			bld.stlib(source='foo.cpp', target='app')
+			# equivalent to:
+			# bld(features='cxx cxxstlib', source='foo.cpp', target='app')
+
+	"""
+	set_features(kw, 'stlib')
+	return bld(*k, **kw)
+
+@conf
+def objects(bld, *k, **kw):
+	"""
+	Alias for creating object files by looking at the file extensions::
+
+		def build(bld):
+			bld.objects(source='foo.c', target='app')
+			# equivalent to:
+			# bld(features='c', source='foo.c', target='app')
+
+	"""
+	set_features(kw, 'objects')
+	return bld(*k, **kw)
+
diff --git a/Tools/c_config.py b/Tools/c_config.py
new file mode 100644
index 0000000..d2b3c0d
--- /dev/null
+++ b/Tools/c_config.py
@@ -0,0 +1,1351 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+C/C++/D configuration helpers
+"""
+
+from __future__ import with_statement
+
+import os, re, shlex
+from waflib import Build, Utils, Task, Options, Logs, Errors, Runner
+from waflib.TaskGen import after_method, feature
+from waflib.Configure import conf
+
+WAF_CONFIG_H   = 'config.h'
+"""default name for the config.h file"""
+
+DEFKEYS = 'define_key'
+INCKEYS = 'include_key'
+
+SNIP_EMPTY_PROGRAM = '''
+int main(int argc, char **argv) {
+	(void)argc; (void)argv;
+	return 0;
+}
+'''
+
+MACRO_TO_DESTOS = {
+'__linux__'                                      : 'linux',
+'__GNU__'                                        : 'gnu', # hurd
+'__FreeBSD__'                                    : 'freebsd',
+'__NetBSD__'                                     : 'netbsd',
+'__OpenBSD__'                                    : 'openbsd',
+'__sun'                                          : 'sunos',
+'__hpux'                                         : 'hpux',
+'__sgi'                                          : 'irix',
+'_AIX'                                           : 'aix',
+'__CYGWIN__'                                     : 'cygwin',
+'__MSYS__'                                       : 'cygwin',
+'_UWIN'                                          : 'uwin',
+'_WIN64'                                         : 'win32',
+'_WIN32'                                         : 'win32',
+# Note about darwin: this is also tested with 'defined __APPLE__ && defined __MACH__' somewhere below in this file.
+'__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__'  : 'darwin',
+'__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__' : 'darwin', # iphone
+'__QNX__'                                        : 'qnx',
+'__native_client__'                              : 'nacl' # google native client platform
+}
+
+MACRO_TO_DEST_CPU = {
+'__x86_64__'  : 'x86_64',
+'__amd64__'   : 'x86_64',
+'__i386__'    : 'x86',
+'__ia64__'    : 'ia',
+'__mips__'    : 'mips',
+'__sparc__'   : 'sparc',
+'__alpha__'   : 'alpha',
+'__aarch64__' : 'aarch64',
+'__thumb__'   : 'thumb',
+'__arm__'     : 'arm',
+'__hppa__'    : 'hppa',
+'__powerpc__' : 'powerpc',
+'__ppc__'     : 'powerpc',
+'__convex__'  : 'convex',
+'__m68k__'    : 'm68k',
+'__s390x__'   : 's390x',
+'__s390__'    : 's390',
+'__sh__'      : 'sh',
+'__xtensa__'  : 'xtensa',
+}
+
+@conf
+def parse_flags(self, line, uselib_store, env=None, force_static=False, posix=None):
+	"""
+	Parses flags from the input lines, and adds them to the relevant use variables::
+
+		def configure(conf):
+			conf.parse_flags('-O3', 'FOO')
+			# conf.env.CXXFLAGS_FOO = ['-O3']
+			# conf.env.CFLAGS_FOO = ['-O3']
+
+	:param line: flags
+	:type line: string
+	:param uselib_store: where to add the flags
+	:type uselib_store: string
+	:param env: config set or conf.env by default
+	:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+	"""
+
+	assert(isinstance(line, str))
+
+	env = env or self.env
+
+	# Issue 811 and 1371
+	if posix is None:
+		posix = True
+		if '\\' in line:
+			posix = ('\\ ' in line) or ('\\\\' in line)
+
+	lex = shlex.shlex(line, posix=posix)
+	lex.whitespace_split = True
+	lex.commenters = ''
+	lst = list(lex)
+
+	# append_unique is not always possible
+	# for example, apple flags may require both -arch i386 and -arch ppc
+	uselib = uselib_store
+	def app(var, val):
+		env.append_value('%s_%s' % (var, uselib), val)
+	def appu(var, val):
+		env.append_unique('%s_%s' % (var, uselib), val)
+	static = False
+	while lst:
+		x = lst.pop(0)
+		st = x[:2]
+		ot = x[2:]
+
+		if st == '-I' or st == '/I':
+			if not ot:
+				ot = lst.pop(0)
+			appu('INCLUDES', ot)
+		elif st == '-i':
+			tmp = [x, lst.pop(0)]
+			app('CFLAGS', tmp)
+			app('CXXFLAGS', tmp)
+		elif st == '-D' or (env.CXX_NAME == 'msvc' and st == '/D'): # not perfect but..
+			if not ot:
+				ot = lst.pop(0)
+			app('DEFINES', ot)
+		elif st == '-l':
+			if not ot:
+				ot = lst.pop(0)
+			prefix = 'STLIB' if (force_static or static) else 'LIB'
+			app(prefix, ot)
+		elif st == '-L':
+			if not ot:
+				ot = lst.pop(0)
+			prefix = 'STLIBPATH' if (force_static or static) else 'LIBPATH'
+			appu(prefix, ot)
+		elif x.startswith('/LIBPATH:'):
+			prefix = 'STLIBPATH' if (force_static or static) else 'LIBPATH'
+			appu(prefix, x.replace('/LIBPATH:', ''))
+		elif x.startswith('-std='):
+			prefix = 'CXXFLAGS' if '++' in x else 'CFLAGS'
+			app(prefix, x)
+		elif x.startswith('+') or x in ('-pthread', '-fPIC', '-fpic', '-fPIE', '-fpie'):
+			app('CFLAGS', x)
+			app('CXXFLAGS', x)
+			app('LINKFLAGS', x)
+		elif x == '-framework':
+			appu('FRAMEWORK', lst.pop(0))
+		elif x.startswith('-F'):
+			appu('FRAMEWORKPATH', x[2:])
+		elif x == '-Wl,-rpath' or x == '-Wl,-R':
+			app('RPATH', lst.pop(0).lstrip('-Wl,'))
+		elif x.startswith('-Wl,-R,'):
+			app('RPATH', x[7:])
+		elif x.startswith('-Wl,-R'):
+			app('RPATH', x[6:])
+		elif x.startswith('-Wl,-rpath,'):
+			app('RPATH', x[11:])
+		elif x == '-Wl,-Bstatic' or x == '-Bstatic':
+			static = True
+		elif x == '-Wl,-Bdynamic' or x == '-Bdynamic':
+			static = False
+		elif x.startswith('-Wl') or x in ('-rdynamic', '-pie'):
+			app('LINKFLAGS', x)
+		elif x.startswith(('-m', '-f', '-dynamic', '-O', '-g')):
+			# Adding the -W option breaks python builds on Openindiana
+			app('CFLAGS', x)
+			app('CXXFLAGS', x)
+		elif x.startswith('-bundle'):
+			app('LINKFLAGS', x)
+		elif x.startswith(('-undefined', '-Xlinker')):
+			arg = lst.pop(0)
+			app('LINKFLAGS', [x, arg])
+		elif x.startswith(('-arch', '-isysroot')):
+			tmp = [x, lst.pop(0)]
+			app('CFLAGS', tmp)
+			app('CXXFLAGS', tmp)
+			app('LINKFLAGS', tmp)
+		elif x.endswith(('.a', '.so', '.dylib', '.lib')):
+			appu('LINKFLAGS', x) # not cool, #762
+		else:
+			self.to_log('Unhandled flag %r' % x)
+
+@conf
+def validate_cfg(self, kw):
+	"""
+	Searches for the program *pkg-config* if missing, and validates the
+	parameters to pass to :py:func:`waflib.Tools.c_config.exec_cfg`.
+
+	:param path: the **-config program to use** (default is *pkg-config*)
+	:type path: list of string
+	:param msg: message to display to describe the test executed
+	:type msg: string
+	:param okmsg: message to display when the test is successful
+	:type okmsg: string
+	:param errmsg: message to display in case of error
+	:type errmsg: string
+	"""
+	if not 'path' in kw:
+		if not self.env.PKGCONFIG:
+			self.find_program('pkg-config', var='PKGCONFIG')
+		kw['path'] = self.env.PKGCONFIG
+
+	# verify that exactly one action is requested
+	s = ('atleast_pkgconfig_version' in kw) + ('modversion' in kw) + ('package' in kw)
+	if s != 1:
+		raise ValueError('exactly one of atleast_pkgconfig_version, modversion and package must be set')
+	if not 'msg' in kw:
+		if 'atleast_pkgconfig_version' in kw:
+			kw['msg'] = 'Checking for pkg-config version >= %r' % kw['atleast_pkgconfig_version']
+		elif 'modversion' in kw:
+			kw['msg'] = 'Checking for %r version' % kw['modversion']
+		else:
+			kw['msg'] = 'Checking for %r' %(kw['package'])
+
+	# let the modversion check set the okmsg to the detected version
+	if not 'okmsg' in kw and not 'modversion' in kw:
+		kw['okmsg'] = 'yes'
+	if not 'errmsg' in kw:
+		kw['errmsg'] = 'not found'
+
+	# pkg-config version
+	if 'atleast_pkgconfig_version' in kw:
+		pass
+	elif 'modversion' in kw:
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = kw['modversion']
+		if not 'define_name' in kw:
+			kw['define_name'] = '%s_VERSION' % Utils.quote_define_name(kw['uselib_store'])
+	else:
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = Utils.to_list(kw['package'])[0].upper()
+		if not 'define_name' in kw:
+			kw['define_name'] = self.have_define(kw['uselib_store'])
+
+@conf
+def exec_cfg(self, kw):
+	"""
+	Executes ``pkg-config`` or other ``-config`` applications to collect configuration flags:
+
+	* if atleast_pkgconfig_version is given, check that pkg-config has the version n and return
+	* if modversion is given, then return the module version
+	* else, execute the *-config* program with the *args* and *variables* given, and set the flags on the *conf.env.FLAGS_name* variable
+
+	:param atleast_pkgconfig_version: minimum pkg-config version to use (disable other tests)
+	:type atleast_pkgconfig_version: string
+	:param package: package name, for example *gtk+-2.0*
+	:type package: string
+	:param uselib_store: if the test is successful, define HAVE\_*name*. It is also used to define *conf.env.FLAGS_name* variables.
+	:type uselib_store: string
+	:param modversion: if provided, return the version of the given module and define *name*\_VERSION
+	:type modversion: string
+	:param args: arguments to give to *package* when retrieving flags
+	:type args: list of string
+	:param variables: return the values of particular variables
+	:type variables: list of string
+	:param define_variable: additional variables to define (also in conf.env.PKG_CONFIG_DEFINES)
+	:type define_variable: dict(string: string)
+	"""
+
+	path = Utils.to_list(kw['path'])
+	env = self.env.env or None
+	if kw.get('pkg_config_path'):
+		if not env:
+			env = dict(self.environ)
+		env['PKG_CONFIG_PATH'] = kw['pkg_config_path']
+
+	def define_it():
+		define_name = kw['define_name']
+		# by default, add HAVE_X to the config.h, else provide DEFINES_X for use=X
+		if kw.get('global_define', 1):
+			self.define(define_name, 1, False)
+		else:
+			self.env.append_unique('DEFINES_%s' % kw['uselib_store'], "%s=1" % define_name)
+
+		if kw.get('add_have_to_env', 1):
+			self.env[define_name] = 1
+
+	# pkg-config version
+	if 'atleast_pkgconfig_version' in kw:
+		cmd = path + ['--atleast-pkgconfig-version=%s' % kw['atleast_pkgconfig_version']]
+		self.cmd_and_log(cmd, env=env)
+		return
+
+	# single version for a module
+	if 'modversion' in kw:
+		version = self.cmd_and_log(path + ['--modversion', kw['modversion']], env=env).strip()
+		if not 'okmsg' in kw:
+			kw['okmsg'] = version
+		self.define(kw['define_name'], version)
+		return version
+
+	lst = [] + path
+
+	defi = kw.get('define_variable')
+	if not defi:
+		defi = self.env.PKG_CONFIG_DEFINES or {}
+	for key, val in defi.items():
+		lst.append('--define-variable=%s=%s' % (key, val))
+
+	static = kw.get('force_static', False)
+	if 'args' in kw:
+		args = Utils.to_list(kw['args'])
+		if '--static' in args or '--static-libs' in args:
+			static = True
+		lst += args
+
+	# tools like pkgconf expect the package argument after the -- ones -_-
+	lst.extend(Utils.to_list(kw['package']))
+
+	# retrieving variables of a module
+	if 'variables' in kw:
+		v_env = kw.get('env', self.env)
+		vars = Utils.to_list(kw['variables'])
+		for v in vars:
+			val = self.cmd_and_log(lst + ['--variable=' + v], env=env).strip()
+			var = '%s_%s' % (kw['uselib_store'], v)
+			v_env[var] = val
+		return
+
+	# so we assume the command-line will output flags to be parsed afterwards
+	ret = self.cmd_and_log(lst, env=env)
+
+	define_it()
+	self.parse_flags(ret, kw['uselib_store'], kw.get('env', self.env), force_static=static, posix=kw.get('posix'))
+	return ret
+
+@conf
+def check_cfg(self, *k, **kw):
+	"""
+	Checks for configuration flags using a **-config**-like program (pkg-config, sdl-config, etc).
+	This wraps internal calls to :py:func:`waflib.Tools.c_config.validate_cfg` and :py:func:`waflib.Tools.c_config.exec_cfg`
+
+	A few examples::
+
+		def configure(conf):
+			conf.load('compiler_c')
+			conf.check_cfg(package='glib-2.0', args='--libs --cflags')
+			conf.check_cfg(package='pango')
+			conf.check_cfg(package='pango', uselib_store='MYPANGO', args=['--cflags', '--libs'])
+			conf.check_cfg(package='pango',
+				args=['pango >= 0.1.0', 'pango < 9.9.9', '--cflags', '--libs'],
+				msg="Checking for 'pango 0.1.0'")
+			conf.check_cfg(path='sdl-config', args='--cflags --libs', package='', uselib_store='SDL')
+			conf.check_cfg(path='mpicc', args='--showme:compile --showme:link',
+				package='', uselib_store='OPEN_MPI', mandatory=False)
+			# variables
+			conf.check_cfg(package='gtk+-2.0', variables=['includedir', 'prefix'], uselib_store='FOO')
+			print(conf.env.FOO_includedir)
+	"""
+	self.validate_cfg(kw)
+	if 'msg' in kw:
+		self.start_msg(kw['msg'], **kw)
+	ret = None
+	try:
+		ret = self.exec_cfg(kw)
+	except self.errors.WafError as e:
+		if 'errmsg' in kw:
+			self.end_msg(kw['errmsg'], 'YELLOW', **kw)
+		if Logs.verbose > 1:
+			self.to_log('Command failure: %s' % e)
+		self.fatal('The configuration failed')
+	else:
+		if not ret:
+			ret = True
+		kw['success'] = ret
+		if 'okmsg' in kw:
+			self.end_msg(self.ret_msg(kw['okmsg'], kw), **kw)
+
+	return ret
+
+def build_fun(bld):
+	"""
+	Build function that is used for running configuration tests with ``conf.check()``
+	"""
+	if bld.kw['compile_filename']:
+		node = bld.srcnode.make_node(bld.kw['compile_filename'])
+		node.write(bld.kw['code'])
+
+	o = bld(features=bld.kw['features'], source=bld.kw['compile_filename'], target='testprog')
+
+	for k, v in bld.kw.items():
+		setattr(o, k, v)
+
+	if not bld.kw.get('quiet'):
+		bld.conf.to_log("==>\n%s\n<==" % bld.kw['code'])
+
+@conf
+def validate_c(self, kw):
+	"""
+	Pre-checks the parameters that will be given to :py:func:`waflib.Configure.run_build`
+
+	:param compiler: c or cxx (tries to guess what is best)
+	:type compiler: string
+	:param type: cprogram, cshlib, cstlib - not required if *features are given directly*
+	:type type: binary to create
+	:param feature: desired features for the task generator that will execute the test, for example ``cxx cxxstlib``
+	:type feature: list of string
+	:param fragment: provide a piece of code for the test (default is to let the system create one)
+	:type fragment: string
+	:param uselib_store: define variables after the test is executed (IMPORTANT!)
+	:type uselib_store: string
+	:param use: parameters to use for building (just like the normal *use* keyword)
+	:type use: list of string
+	:param define_name: define to set when the check is over
+	:type define_name: string
+	:param execute: execute the resulting binary
+	:type execute: bool
+	:param define_ret: if execute is set to True, use the execution output in both the define and the return value
+	:type define_ret: bool
+	:param header_name: check for a particular header
+	:type header_name: string
+	:param auto_add_header_name: if header_name was set, add the headers in env.INCKEYS so the next tests will include these headers
+	:type auto_add_header_name: bool
+	"""
+	for x in ('type_name', 'field_name', 'function_name'):
+		if x in kw:
+			Logs.warn('Invalid argument %r in test' % x)
+
+	if not 'build_fun' in kw:
+		kw['build_fun'] = build_fun
+
+	if not 'env' in kw:
+		kw['env'] = self.env.derive()
+	env = kw['env']
+
+	if not 'compiler' in kw and not 'features' in kw:
+		kw['compiler'] = 'c'
+		if env.CXX_NAME and Task.classes.get('cxx'):
+			kw['compiler'] = 'cxx'
+			if not self.env.CXX:
+				self.fatal('a c++ compiler is required')
+		else:
+			if not self.env.CC:
+				self.fatal('a c compiler is required')
+
+	if not 'compile_mode' in kw:
+		kw['compile_mode'] = 'c'
+		if 'cxx' in Utils.to_list(kw.get('features', [])) or kw.get('compiler') == 'cxx':
+			kw['compile_mode'] = 'cxx'
+
+	if not 'type' in kw:
+		kw['type'] = 'cprogram'
+
+	if not 'features' in kw:
+		if not 'header_name' in kw or kw.get('link_header_test', True):
+			kw['features'] = [kw['compile_mode'], kw['type']] # "c ccprogram"
+		else:
+			kw['features'] = [kw['compile_mode']]
+	else:
+		kw['features'] = Utils.to_list(kw['features'])
+
+	if not 'compile_filename' in kw:
+		kw['compile_filename'] = 'test.c' + ((kw['compile_mode'] == 'cxx') and 'pp' or '')
+
+	def to_header(dct):
+		if 'header_name' in dct:
+			dct = Utils.to_list(dct['header_name'])
+			return ''.join(['#include <%s>\n' % x for x in dct])
+		return ''
+
+	if 'framework_name' in kw:
+		# OSX, not sure this is used anywhere
+		fwkname = kw['framework_name']
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = fwkname.upper()
+		if not kw.get('no_header'):
+			fwk = '%s/%s.h' % (fwkname, fwkname)
+			if kw.get('remove_dot_h'):
+				fwk = fwk[:-2]
+			val = kw.get('header_name', [])
+			kw['header_name'] = Utils.to_list(val) + [fwk]
+		kw['msg'] = 'Checking for framework %s' % fwkname
+		kw['framework'] = fwkname
+
+	elif 'header_name' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for header %s' % kw['header_name']
+
+		l = Utils.to_list(kw['header_name'])
+		assert len(l), 'list of headers in header_name is empty'
+
+		kw['code'] = to_header(kw) + SNIP_EMPTY_PROGRAM
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = l[0].upper()
+		if not 'define_name' in kw:
+			kw['define_name'] = self.have_define(l[0])
+
+	if 'lib' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for library %s' % kw['lib']
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = kw['lib'].upper()
+
+	if 'stlib' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for static library %s' % kw['stlib']
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = kw['stlib'].upper()
+
+	if 'fragment' in kw:
+		# an additional code fragment may be provided to replace the predefined code
+		# in custom headers
+		kw['code'] = kw['fragment']
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for code snippet'
+		if not 'errmsg' in kw:
+			kw['errmsg'] = 'no'
+
+	for (flagsname,flagstype) in (('cxxflags','compiler'), ('cflags','compiler'), ('linkflags','linker')):
+		if flagsname in kw:
+			if not 'msg' in kw:
+				kw['msg'] = 'Checking for %s flags %s' % (flagstype, kw[flagsname])
+			if not 'errmsg' in kw:
+				kw['errmsg'] = 'no'
+
+	if not 'execute' in kw:
+		kw['execute'] = False
+	if kw['execute']:
+		kw['features'].append('test_exec')
+		kw['chmod'] = Utils.O755
+
+	if not 'errmsg' in kw:
+		kw['errmsg'] = 'not found'
+
+	if not 'okmsg' in kw:
+		kw['okmsg'] = 'yes'
+
+	if not 'code' in kw:
+		kw['code'] = SNIP_EMPTY_PROGRAM
+
+	# if there are headers to append automatically to the next tests
+	if self.env[INCKEYS]:
+		kw['code'] = '\n'.join(['#include <%s>' % x for x in self.env[INCKEYS]]) + '\n' + kw['code']
+
+	# in case defines lead to very long command-lines
+	if kw.get('merge_config_header') or env.merge_config_header:
+		kw['code'] = '%s\n\n%s' % (self.get_config_header(), kw['code'])
+		env.DEFINES = [] # modify the copy
+
+	if not kw.get('success'):
+		kw['success'] = None
+
+	if 'define_name' in kw:
+		self.undefine(kw['define_name'])
+	if not 'msg' in kw:
+		self.fatal('missing "msg" in conf.check(...)')
+
+@conf
+def post_check(self, *k, **kw):
+	"""
+	Sets the variables after a test executed in
+	:py:func:`waflib.Tools.c_config.check` was run successfully
+	"""
+	is_success = 0
+	if kw['execute']:
+		if kw['success'] is not None:
+			if kw.get('define_ret'):
+				is_success = kw['success']
+			else:
+				is_success = (kw['success'] == 0)
+	else:
+		is_success = (kw['success'] == 0)
+
+	if kw.get('define_name'):
+		comment = kw.get('comment', '')
+		define_name = kw['define_name']
+		if kw['execute'] and kw.get('define_ret') and isinstance(is_success, str):
+			if kw.get('global_define', 1):
+				self.define(define_name, is_success, quote=kw.get('quote', 1), comment=comment)
+			else:
+				if kw.get('quote', 1):
+					succ = '"%s"' % is_success
+				else:
+					succ = int(is_success)
+				val = '%s=%s' % (define_name, succ)
+				var = 'DEFINES_%s' % kw['uselib_store']
+				self.env.append_value(var, val)
+		else:
+			if kw.get('global_define', 1):
+				self.define_cond(define_name, is_success, comment=comment)
+			else:
+				var = 'DEFINES_%s' % kw['uselib_store']
+				self.env.append_value(var, '%s=%s' % (define_name, int(is_success)))
+
+		# define conf.env.HAVE_X to 1
+		if kw.get('add_have_to_env', 1):
+			if kw.get('uselib_store'):
+				self.env[self.have_define(kw['uselib_store'])] = 1
+			elif kw['execute'] and kw.get('define_ret'):
+				self.env[define_name] = is_success
+			else:
+				self.env[define_name] = int(is_success)
+
+	if 'header_name' in kw:
+		if kw.get('auto_add_header_name'):
+			self.env.append_value(INCKEYS, Utils.to_list(kw['header_name']))
+
+	if is_success and 'uselib_store' in kw:
+		from waflib.Tools import ccroot
+		# See get_uselib_vars in ccroot.py
+		_vars = set()
+		for x in kw['features']:
+			if x in ccroot.USELIB_VARS:
+				_vars |= ccroot.USELIB_VARS[x]
+
+		for k in _vars:
+			x = k.lower()
+			if x in kw:
+				self.env.append_value(k + '_' + kw['uselib_store'], kw[x])
+	return is_success
+
+@conf
+def check(self, *k, **kw):
+	"""
+	Performs a configuration test by calling :py:func:`waflib.Configure.run_build`.
+	For the complete list of parameters, see :py:func:`waflib.Tools.c_config.validate_c`.
+	To force a specific compiler, pass ``compiler='c'`` or ``compiler='cxx'`` to the list of arguments
+
+	Besides build targets, complete builds can be given through a build function. All files will
+	be written to a temporary directory::
+
+		def build(bld):
+			lib_node = bld.srcnode.make_node('libdir/liblc1.c')
+			lib_node.parent.mkdir()
+			lib_node.write('#include <stdio.h>\\nint lib_func(void) { FILE *f = fopen("foo", "r");}\\n', 'w')
+			bld(features='c cshlib', source=[lib_node], linkflags=conf.env.EXTRA_LDFLAGS, target='liblc')
+		conf.check(build_fun=build, msg=msg)
+	"""
+	self.validate_c(kw)
+	self.start_msg(kw['msg'], **kw)
+	ret = None
+	try:
+		ret = self.run_build(*k, **kw)
+	except self.errors.ConfigurationError:
+		self.end_msg(kw['errmsg'], 'YELLOW', **kw)
+		if Logs.verbose > 1:
+			raise
+		else:
+			self.fatal('The configuration failed')
+	else:
+		kw['success'] = ret
+
+	ret = self.post_check(*k, **kw)
+	if not ret:
+		self.end_msg(kw['errmsg'], 'YELLOW', **kw)
+		self.fatal('The configuration failed %r' % ret)
+	else:
+		self.end_msg(self.ret_msg(kw['okmsg'], kw), **kw)
+	return ret
+
+class test_exec(Task.Task):
+	"""
+	A task that runs programs after they are built. See :py:func:`waflib.Tools.c_config.test_exec_fun`.
+	"""
+	color = 'PINK'
+	def run(self):
+		if getattr(self.generator, 'rpath', None):
+			if getattr(self.generator, 'define_ret', False):
+				self.generator.bld.retval = self.generator.bld.cmd_and_log([self.inputs[0].abspath()])
+			else:
+				self.generator.bld.retval = self.generator.bld.exec_command([self.inputs[0].abspath()])
+		else:
+			env = self.env.env or {}
+			env.update(dict(os.environ))
+			for var in ('LD_LIBRARY_PATH', 'DYLD_LIBRARY_PATH', 'PATH'):
+				env[var] = self.inputs[0].parent.abspath() + os.path.pathsep + env.get(var, '')
+			if getattr(self.generator, 'define_ret', False):
+				self.generator.bld.retval = self.generator.bld.cmd_and_log([self.inputs[0].abspath()], env=env)
+			else:
+				self.generator.bld.retval = self.generator.bld.exec_command([self.inputs[0].abspath()], env=env)
+
+@feature('test_exec')
+@after_method('apply_link')
+def test_exec_fun(self):
+	"""
+	The feature **test_exec** is used to create a task that will to execute the binary
+	created (link task output) during the build. The exit status will be set
+	on the build context, so only one program may have the feature *test_exec*.
+	This is used by configuration tests::
+
+		def configure(conf):
+			conf.check(execute=True)
+	"""
+	self.create_task('test_exec', self.link_task.outputs[0])
+
+@conf
+def check_cxx(self, *k, **kw):
+	"""
+	Runs a test with a task generator of the form::
+
+		conf.check(features='cxx cxxprogram', ...)
+	"""
+	kw['compiler'] = 'cxx'
+	return self.check(*k, **kw)
+
+@conf
+def check_cc(self, *k, **kw):
+	"""
+	Runs a test with a task generator of the form::
+
+		conf.check(features='c cprogram', ...)
+	"""
+	kw['compiler'] = 'c'
+	return self.check(*k, **kw)
+
+@conf
+def set_define_comment(self, key, comment):
+	"""
+	Sets a comment that will appear in the configuration header
+
+	:type key: string
+	:type comment: string
+	"""
+	coms = self.env.DEFINE_COMMENTS
+	if not coms:
+		coms = self.env.DEFINE_COMMENTS = {}
+	coms[key] = comment or ''
+
+@conf
+def get_define_comment(self, key):
+	"""
+	Returns the comment associated to a define
+
+	:type key: string
+	"""
+	coms = self.env.DEFINE_COMMENTS or {}
+	return coms.get(key, '')
+
+@conf
+def define(self, key, val, quote=True, comment=''):
+	"""
+	Stores a single define and its state into ``conf.env.DEFINES``. The value is cast to an integer (0/1).
+
+	:param key: define name
+	:type key: string
+	:param val: value
+	:type val: int or string
+	:param quote: enclose strings in quotes (yes by default)
+	:type quote: bool
+	"""
+	assert isinstance(key, str)
+	if not key:
+		return
+	if val is True:
+		val = 1
+	elif val in (False, None):
+		val = 0
+
+	if isinstance(val, int) or isinstance(val, float):
+		s = '%s=%s'
+	else:
+		s = quote and '%s="%s"' or '%s=%s'
+	app = s % (key, str(val))
+
+	ban = key + '='
+	lst = self.env.DEFINES
+	for x in lst:
+		if x.startswith(ban):
+			lst[lst.index(x)] = app
+			break
+	else:
+		self.env.append_value('DEFINES', app)
+
+	self.env.append_unique(DEFKEYS, key)
+	self.set_define_comment(key, comment)
+
+@conf
+def undefine(self, key, comment=''):
+	"""
+	Removes a global define from ``conf.env.DEFINES``
+
+	:param key: define name
+	:type key: string
+	"""
+	assert isinstance(key, str)
+	if not key:
+		return
+	ban = key + '='
+	lst = [x for x in self.env.DEFINES if not x.startswith(ban)]
+	self.env.DEFINES = lst
+	self.env.append_unique(DEFKEYS, key)
+	self.set_define_comment(key, comment)
+
+@conf
+def define_cond(self, key, val, comment=''):
+	"""
+	Conditionally defines a name::
+
+		def configure(conf):
+			conf.define_cond('A', True)
+			# equivalent to:
+			# if val: conf.define('A', 1)
+			# else: conf.undefine('A')
+
+	:param key: define name
+	:type key: string
+	:param val: value
+	:type val: int or string
+	"""
+	assert isinstance(key, str)
+	if not key:
+		return
+	if val:
+		self.define(key, 1, comment=comment)
+	else:
+		self.undefine(key, comment=comment)
+
+@conf
+def is_defined(self, key):
+	"""
+	Indicates whether a particular define is globally set in ``conf.env.DEFINES``.
+
+	:param key: define name
+	:type key: string
+	:return: True if the define is set
+	:rtype: bool
+	"""
+	assert key and isinstance(key, str)
+
+	ban = key + '='
+	for x in self.env.DEFINES:
+		if x.startswith(ban):
+			return True
+	return False
+
+@conf
+def get_define(self, key):
+	"""
+	Returns the value of an existing define, or None if not found
+
+	:param key: define name
+	:type key: string
+	:rtype: string
+	"""
+	assert key and isinstance(key, str)
+
+	ban = key + '='
+	for x in self.env.DEFINES:
+		if x.startswith(ban):
+			return x[len(ban):]
+	return None
+
+@conf
+def have_define(self, key):
+	"""
+	Returns a variable suitable for command-line or header use by removing invalid characters
+	and prefixing it with ``HAVE_``
+
+	:param key: define name
+	:type key: string
+	:return: the input key prefixed by *HAVE_* and substitute any invalid characters.
+	:rtype: string
+	"""
+	return (self.env.HAVE_PAT or 'HAVE_%s') % Utils.quote_define_name(key)
+
+@conf
+def write_config_header(self, configfile='', guard='', top=False, defines=True, headers=False, remove=True, define_prefix=''):
+	"""
+	Writes a configuration header containing defines and includes::
+
+		def configure(cnf):
+			cnf.define('A', 1)
+			cnf.write_config_header('config.h')
+
+	This function only adds include guards (if necessary), consult
+	:py:func:`waflib.Tools.c_config.get_config_header` for details on the body.
+
+	:param configfile: path to the file to create (relative or absolute)
+	:type configfile: string
+	:param guard: include guard name to add, by default it is computed from the file name
+	:type guard: string
+	:param top: write the configuration header from the build directory (default is from the current path)
+	:type top: bool
+	:param defines: add the defines (yes by default)
+	:type defines: bool
+	:param headers: add #include in the file
+	:type headers: bool
+	:param remove: remove the defines after they are added (yes by default, works like in autoconf)
+	:type remove: bool
+	:type define_prefix: string
+	:param define_prefix: prefix all the defines in the file with a particular prefix
+	"""
+	if not configfile:
+		configfile = WAF_CONFIG_H
+	waf_guard = guard or 'W_%s_WAF' % Utils.quote_define_name(configfile)
+
+	node = top and self.bldnode or self.path.get_bld()
+	node = node.make_node(configfile)
+	node.parent.mkdir()
+
+	lst = ['/* WARNING! All changes made to this file will be lost! */\n']
+	lst.append('#ifndef %s\n#define %s\n' % (waf_guard, waf_guard))
+	lst.append(self.get_config_header(defines, headers, define_prefix=define_prefix))
+	lst.append('\n#endif /* %s */\n' % waf_guard)
+
+	node.write('\n'.join(lst))
+
+	# config files must not be removed on "waf clean"
+	self.env.append_unique(Build.CFG_FILES, [node.abspath()])
+
+	if remove:
+		for key in self.env[DEFKEYS]:
+			self.undefine(key)
+		self.env[DEFKEYS] = []
+
+@conf
+def get_config_header(self, defines=True, headers=False, define_prefix=''):
+	"""
+	Creates the contents of a ``config.h`` file from the defines and includes
+	set in conf.env.define_key / conf.env.include_key. No include guards are added.
+
+	A prelude will be added from the variable env.WAF_CONFIG_H_PRELUDE if provided. This
+	can be used to insert complex macros or include guards::
+
+		def configure(conf):
+			conf.env.WAF_CONFIG_H_PRELUDE = '#include <unistd.h>\\n'
+			conf.write_config_header('config.h')
+
+	:param defines: write the defines values
+	:type defines: bool
+	:param headers: write include entries for each element in self.env.INCKEYS
+	:type headers: bool
+	:type define_prefix: string
+	:param define_prefix: prefix all the defines with a particular prefix
+	:return: the contents of a ``config.h`` file
+	:rtype: string
+	"""
+	lst = []
+
+	if self.env.WAF_CONFIG_H_PRELUDE:
+		lst.append(self.env.WAF_CONFIG_H_PRELUDE)
+
+	if headers:
+		for x in self.env[INCKEYS]:
+			lst.append('#include <%s>' % x)
+
+	if defines:
+		tbl = {}
+		for k in self.env.DEFINES:
+			a, _, b = k.partition('=')
+			tbl[a] = b
+
+		for k in self.env[DEFKEYS]:
+			caption = self.get_define_comment(k)
+			if caption:
+				caption = ' /* %s */' % caption
+			try:
+				txt = '#define %s%s %s%s' % (define_prefix, k, tbl[k], caption)
+			except KeyError:
+				txt = '/* #undef %s%s */%s' % (define_prefix, k, caption)
+			lst.append(txt)
+	return "\n".join(lst)
+
+@conf
+def cc_add_flags(conf):
+	"""
+	Adds CFLAGS / CPPFLAGS from os.environ to conf.env
+	"""
+	conf.add_os_flags('CPPFLAGS', dup=False)
+	conf.add_os_flags('CFLAGS', dup=False)
+
+@conf
+def cxx_add_flags(conf):
+	"""
+	Adds CXXFLAGS / CPPFLAGS from os.environ to conf.env
+	"""
+	conf.add_os_flags('CPPFLAGS', dup=False)
+	conf.add_os_flags('CXXFLAGS', dup=False)
+
+@conf
+def link_add_flags(conf):
+	"""
+	Adds LINKFLAGS / LDFLAGS from os.environ to conf.env
+	"""
+	conf.add_os_flags('LINKFLAGS', dup=False)
+	conf.add_os_flags('LDFLAGS', dup=False)
+
+@conf
+def cc_load_tools(conf):
+	"""
+	Loads the Waf c extensions
+	"""
+	if not conf.env.DEST_OS:
+		conf.env.DEST_OS = Utils.unversioned_sys_platform()
+	conf.load('c')
+
+@conf
+def cxx_load_tools(conf):
+	"""
+	Loads the Waf c++ extensions
+	"""
+	if not conf.env.DEST_OS:
+		conf.env.DEST_OS = Utils.unversioned_sys_platform()
+	conf.load('cxx')
+
+@conf
+def get_cc_version(conf, cc, gcc=False, icc=False, clang=False):
+	"""
+	Runs the preprocessor to determine the gcc/icc/clang version
+
+	The variables CC_VERSION, DEST_OS, DEST_BINFMT and DEST_CPU will be set in *conf.env*
+
+	:raise: :py:class:`waflib.Errors.ConfigurationError`
+	"""
+	cmd = cc + ['-dM', '-E', '-']
+	env = conf.env.env or None
+	try:
+		out, err = conf.cmd_and_log(cmd, output=0, input='\n'.encode(), env=env)
+	except Errors.WafError:
+		conf.fatal('Could not determine the compiler version %r' % cmd)
+
+	if gcc:
+		if out.find('__INTEL_COMPILER') >= 0:
+			conf.fatal('The intel compiler pretends to be gcc')
+		if out.find('__GNUC__') < 0 and out.find('__clang__') < 0:
+			conf.fatal('Could not determine the compiler type')
+
+	if icc and out.find('__INTEL_COMPILER') < 0:
+		conf.fatal('Not icc/icpc')
+
+	if clang and out.find('__clang__') < 0:
+		conf.fatal('Not clang/clang++')
+	if not clang and out.find('__clang__') >= 0:
+		conf.fatal('Could not find gcc/g++ (only Clang), if renamed try eg: CC=gcc48 CXX=g++48 waf configure')
+
+	k = {}
+	if icc or gcc or clang:
+		out = out.splitlines()
+		for line in out:
+			lst = shlex.split(line)
+			if len(lst)>2:
+				key = lst[1]
+				val = lst[2]
+				k[key] = val
+
+		def isD(var):
+			return var in k
+
+		# Some documentation is available at http://predef.sourceforge.net
+		# The names given to DEST_OS must match what Utils.unversioned_sys_platform() returns.
+		if not conf.env.DEST_OS:
+			conf.env.DEST_OS = ''
+		for i in MACRO_TO_DESTOS:
+			if isD(i):
+				conf.env.DEST_OS = MACRO_TO_DESTOS[i]
+				break
+		else:
+			if isD('__APPLE__') and isD('__MACH__'):
+				conf.env.DEST_OS = 'darwin'
+			elif isD('__unix__'): # unix must be tested last as it's a generic fallback
+				conf.env.DEST_OS = 'generic'
+
+		if isD('__ELF__'):
+			conf.env.DEST_BINFMT = 'elf'
+		elif isD('__WINNT__') or isD('__CYGWIN__') or isD('_WIN32'):
+			conf.env.DEST_BINFMT = 'pe'
+			if not conf.env.IMPLIBDIR:
+				conf.env.IMPLIBDIR = conf.env.LIBDIR # for .lib or .dll.a files
+			conf.env.LIBDIR = conf.env.BINDIR
+		elif isD('__APPLE__'):
+			conf.env.DEST_BINFMT = 'mac-o'
+
+		if not conf.env.DEST_BINFMT:
+			# Infer the binary format from the os name.
+			conf.env.DEST_BINFMT = Utils.destos_to_binfmt(conf.env.DEST_OS)
+
+		for i in MACRO_TO_DEST_CPU:
+			if isD(i):
+				conf.env.DEST_CPU = MACRO_TO_DEST_CPU[i]
+				break
+
+		Logs.debug('ccroot: dest platform: ' + ' '.join([conf.env[x] or '?' for x in ('DEST_OS', 'DEST_BINFMT', 'DEST_CPU')]))
+		if icc:
+			ver = k['__INTEL_COMPILER']
+			conf.env.CC_VERSION = (ver[:-2], ver[-2], ver[-1])
+		else:
+			if isD('__clang__') and isD('__clang_major__'):
+				conf.env.CC_VERSION = (k['__clang_major__'], k['__clang_minor__'], k['__clang_patchlevel__'])
+			else:
+				# older clang versions and gcc
+				conf.env.CC_VERSION = (k['__GNUC__'], k['__GNUC_MINOR__'], k.get('__GNUC_PATCHLEVEL__', '0'))
+	return k
+
+@conf
+def get_xlc_version(conf, cc):
+	"""
+	Returns the Aix compiler version
+
+	:raise: :py:class:`waflib.Errors.ConfigurationError`
+	"""
+	cmd = cc + ['-qversion']
+	try:
+		out, err = conf.cmd_and_log(cmd, output=0)
+	except Errors.WafError:
+		conf.fatal('Could not find xlc %r' % cmd)
+
+	# the intention is to catch the 8.0 in "IBM XL C/C++ Enterprise Edition V8.0 for AIX..."
+	for v in (r"IBM XL C/C\+\+.* V(?P<major>\d*)\.(?P<minor>\d*)",):
+		version_re = re.compile(v, re.I).search
+		match = version_re(out or err)
+		if match:
+			k = match.groupdict()
+			conf.env.CC_VERSION = (k['major'], k['minor'])
+			break
+	else:
+		conf.fatal('Could not determine the XLC version.')
+
+@conf
+def get_suncc_version(conf, cc):
+	"""
+	Returns the Sun compiler version
+
+	:raise: :py:class:`waflib.Errors.ConfigurationError`
+	"""
+	cmd = cc + ['-V']
+	try:
+		out, err = conf.cmd_and_log(cmd, output=0)
+	except Errors.WafError as e:
+		# Older versions of the compiler exit with non-zero status when reporting their version
+		if not (hasattr(e, 'returncode') and hasattr(e, 'stdout') and hasattr(e, 'stderr')):
+			conf.fatal('Could not find suncc %r' % cmd)
+		out = e.stdout
+		err = e.stderr
+
+	version = (out or err)
+	version = version.splitlines()[0]
+
+	# cc: Sun C 5.10 SunOS_i386 2009/06/03
+	# cc: Studio 12.5 Sun C++ 5.14 SunOS_sparc Beta 2015/11/17
+	# cc: WorkShop Compilers 5.0 98/12/15 C 5.0
+	version_re = re.compile(r'cc: (studio.*?|\s+)?(sun\s+(c\+\+|c)|(WorkShop\s+Compilers))?\s+(?P<major>\d*)\.(?P<minor>\d*)', re.I).search
+	match = version_re(version)
+	if match:
+		k = match.groupdict()
+		conf.env.CC_VERSION = (k['major'], k['minor'])
+	else:
+		conf.fatal('Could not determine the suncc version.')
+
+# ============ the --as-needed flag should added during the configuration, not at runtime =========
+
+@conf
+def add_as_needed(self):
+	"""
+	Adds ``--as-needed`` to the *LINKFLAGS*
+	On some platforms, it is a default flag.  In some cases (e.g., in NS-3) it is necessary to explicitly disable this feature with `-Wl,--no-as-needed` flag.
+	"""
+	if self.env.DEST_BINFMT == 'elf' and 'gcc' in (self.env.CXX_NAME, self.env.CC_NAME):
+		self.env.append_unique('LINKFLAGS', '-Wl,--as-needed')
+
+# ============ parallel configuration
+
+class cfgtask(Task.Task):
+	"""
+	A task that executes build configuration tests (calls conf.check)
+
+	Make sure to use locks if concurrent access to the same conf.env data is necessary.
+	"""
+	def __init__(self, *k, **kw):
+		Task.Task.__init__(self, *k, **kw)
+		self.run_after = set()
+
+	def display(self):
+		return ''
+
+	def runnable_status(self):
+		for x in self.run_after:
+			if not x.hasrun:
+				return Task.ASK_LATER
+		return Task.RUN_ME
+
+	def uid(self):
+		return Utils.SIG_NIL
+
+	def signature(self):
+		return Utils.SIG_NIL
+
+	def run(self):
+		conf = self.conf
+		bld = Build.BuildContext(top_dir=conf.srcnode.abspath(), out_dir=conf.bldnode.abspath())
+		bld.env = conf.env
+		bld.init_dirs()
+		bld.in_msg = 1 # suppress top-level start_msg
+		bld.logger = self.logger
+		bld.multicheck_task = self
+		args = self.args
+		try:
+			if 'func' in args:
+				bld.test(build_fun=args['func'],
+					msg=args.get('msg', ''),
+					okmsg=args.get('okmsg', ''),
+					errmsg=args.get('errmsg', ''),
+					)
+			else:
+				args['multicheck_mandatory'] = args.get('mandatory', True)
+				args['mandatory'] = True
+				try:
+					bld.check(**args)
+				finally:
+					args['mandatory'] = args['multicheck_mandatory']
+		except Exception:
+			return 1
+
+	def process(self):
+		Task.Task.process(self)
+		if 'msg' in self.args:
+			with self.generator.bld.multicheck_lock:
+				self.conf.start_msg(self.args['msg'])
+				if self.hasrun == Task.NOT_RUN:
+					self.conf.end_msg('test cancelled', 'YELLOW')
+				elif self.hasrun != Task.SUCCESS:
+					self.conf.end_msg(self.args.get('errmsg', 'no'), 'YELLOW')
+				else:
+					self.conf.end_msg(self.args.get('okmsg', 'yes'), 'GREEN')
+
+@conf
+def multicheck(self, *k, **kw):
+	"""
+	Runs configuration tests in parallel; results are printed sequentially at the end of the build
+	but each test must provide its own msg value to display a line::
+
+		def test_build(ctx):
+			ctx.in_msg = True # suppress console outputs
+			ctx.check_large_file(mandatory=False)
+
+		conf.multicheck(
+			{'header_name':'stdio.h', 'msg':'... stdio', 'uselib_store':'STDIO', 'global_define':False},
+			{'header_name':'xyztabcd.h', 'msg':'... optional xyztabcd.h', 'mandatory': False},
+			{'header_name':'stdlib.h', 'msg':'... stdlib', 'okmsg': 'aye', 'errmsg': 'nope'},
+			{'func': test_build, 'msg':'... testing an arbitrary build function', 'okmsg':'ok'},
+			msg       = 'Checking for headers in parallel',
+			mandatory = True, # mandatory tests raise an error at the end
+			run_all_tests = True, # try running all tests
+		)
+
+	The configuration tests may modify the values in conf.env in any order, and the define
+	values can affect configuration tests being executed. It is hence recommended
+	to provide `uselib_store` values with `global_define=False` to prevent such issues.
+	"""
+	self.start_msg(kw.get('msg', 'Executing %d configuration tests' % len(k)), **kw)
+
+	# Force a copy so that threads append to the same list at least
+	# no order is guaranteed, but the values should not disappear at least
+	for var in ('DEFINES', DEFKEYS):
+		self.env.append_value(var, [])
+	self.env.DEFINE_COMMENTS = self.env.DEFINE_COMMENTS or {}
+
+	# define a task object that will execute our tests
+	class par(object):
+		def __init__(self):
+			self.keep = False
+			self.task_sigs = {}
+			self.progress_bar = 0
+		def total(self):
+			return len(tasks)
+		def to_log(self, *k, **kw):
+			return
+
+	bld = par()
+	bld.keep = kw.get('run_all_tests', True)
+	bld.imp_sigs = {}
+	tasks = []
+
+	id_to_task = {}
+	for dct in k:
+		x = Task.classes['cfgtask'](bld=bld, env=None)
+		tasks.append(x)
+		x.args = dct
+		x.bld = bld
+		x.conf = self
+		x.args = dct
+
+		# bind a logger that will keep the info in memory
+		x.logger = Logs.make_mem_logger(str(id(x)), self.logger)
+
+		if 'id' in dct:
+			id_to_task[dct['id']] = x
+
+	# second pass to set dependencies with after_test/before_test
+	for x in tasks:
+		for key in Utils.to_list(x.args.get('before_tests', [])):
+			tsk = id_to_task[key]
+			if not tsk:
+				raise ValueError('No test named %r' % key)
+			tsk.run_after.add(x)
+		for key in Utils.to_list(x.args.get('after_tests', [])):
+			tsk = id_to_task[key]
+			if not tsk:
+				raise ValueError('No test named %r' % key)
+			x.run_after.add(tsk)
+
+	def it():
+		yield tasks
+		while 1:
+			yield []
+	bld.producer = p = Runner.Parallel(bld, Options.options.jobs)
+	bld.multicheck_lock = Utils.threading.Lock()
+	p.biter = it()
+
+	self.end_msg('started')
+	p.start()
+
+	# flush the logs in order into the config.log
+	for x in tasks:
+		x.logger.memhandler.flush()
+
+	self.start_msg('-> processing test results')
+	if p.error:
+		for x in p.error:
+			if getattr(x, 'err_msg', None):
+				self.to_log(x.err_msg)
+				self.end_msg('fail', color='RED')
+				raise Errors.WafError('There is an error in the library, read config.log for more information')
+
+	failure_count = 0
+	for x in tasks:
+		if x.hasrun not in (Task.SUCCESS, Task.NOT_RUN):
+			failure_count += 1
+
+	if failure_count:
+		self.end_msg(kw.get('errmsg', '%s test failed' % failure_count), color='YELLOW', **kw)
+	else:
+		self.end_msg('all ok', **kw)
+
+	for x in tasks:
+		if x.hasrun != Task.SUCCESS:
+			if x.args.get('mandatory', True):
+				self.fatal(kw.get('fatalmsg') or 'One of the tests has failed, read config.log for more information')
+
+@conf
+def check_gcc_o_space(self, mode='c'):
+	if int(self.env.CC_VERSION[0]) > 4:
+		# this is for old compilers
+		return
+	self.env.stash()
+	if mode == 'c':
+		self.env.CCLNK_TGT_F = ['-o', '']
+	elif mode == 'cxx':
+		self.env.CXXLNK_TGT_F = ['-o', '']
+	features = '%s %sshlib' % (mode, mode)
+	try:
+		self.check(msg='Checking if the -o link must be split from arguments', fragment=SNIP_EMPTY_PROGRAM, features=features)
+	except self.errors.ConfigurationError:
+		self.env.revert()
+	else:
+		self.env.commit()
+
diff --git a/Tools/c_osx.py b/Tools/c_osx.py
new file mode 100644
index 0000000..f70b128
--- /dev/null
+++ b/Tools/c_osx.py
@@ -0,0 +1,193 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy 2008-2018 (ita)
+
+"""
+MacOSX related tools
+"""
+
+import os, shutil, platform
+from waflib import Task, Utils
+from waflib.TaskGen import taskgen_method, feature, after_method, before_method
+
+app_info = '''
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
+<plist version="0.9">
+<dict>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleGetInfoString</key>
+	<string>Created by Waf</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>NOTE</key>
+	<string>THIS IS A GENERATED FILE, DO NOT MODIFY</string>
+	<key>CFBundleExecutable</key>
+	<string>{app_name}</string>
+</dict>
+</plist>
+'''
+"""
+plist template
+"""
+
+@feature('c', 'cxx')
+def set_macosx_deployment_target(self):
+	"""
+	see WAF issue 285 and also and also http://trac.macports.org/ticket/17059
+	"""
+	if self.env.MACOSX_DEPLOYMENT_TARGET:
+		os.environ['MACOSX_DEPLOYMENT_TARGET'] = self.env.MACOSX_DEPLOYMENT_TARGET
+	elif 'MACOSX_DEPLOYMENT_TARGET' not in os.environ:
+		if Utils.unversioned_sys_platform() == 'darwin':
+			os.environ['MACOSX_DEPLOYMENT_TARGET'] = '.'.join(platform.mac_ver()[0].split('.')[:2])
+
+@taskgen_method
+def create_bundle_dirs(self, name, out):
+	"""
+	Creates bundle folders, used by :py:func:`create_task_macplist` and :py:func:`create_task_macapp`
+	"""
+	dir = out.parent.find_or_declare(name)
+	dir.mkdir()
+	macos = dir.find_or_declare(['Contents', 'MacOS'])
+	macos.mkdir()
+	return dir
+
+def bundle_name_for_output(out):
+	name = out.name
+	k = name.rfind('.')
+	if k >= 0:
+		name = name[:k] + '.app'
+	else:
+		name = name + '.app'
+	return name
+
+@feature('cprogram', 'cxxprogram')
+@after_method('apply_link')
+def create_task_macapp(self):
+	"""
+	To compile an executable into a Mac application (a .app), set its *mac_app* attribute::
+
+		def build(bld):
+			bld.shlib(source='a.c', target='foo', mac_app=True)
+
+	To force *all* executables to be transformed into Mac applications::
+
+		def build(bld):
+			bld.env.MACAPP = True
+			bld.shlib(source='a.c', target='foo')
+	"""
+	if self.env.MACAPP or getattr(self, 'mac_app', False):
+		out = self.link_task.outputs[0]
+
+		name = bundle_name_for_output(out)
+		dir = self.create_bundle_dirs(name, out)
+
+		n1 = dir.find_or_declare(['Contents', 'MacOS', out.name])
+
+		self.apptask = self.create_task('macapp', self.link_task.outputs, n1)
+		inst_to = getattr(self, 'install_path', '/Applications') + '/%s/Contents/MacOS/' % name
+		self.add_install_files(install_to=inst_to, install_from=n1, chmod=Utils.O755)
+
+		if getattr(self, 'mac_files', None):
+			# this only accepts files; they will be installed as seen from mac_files_root
+			mac_files_root = getattr(self, 'mac_files_root', None)
+			if isinstance(mac_files_root, str):
+				mac_files_root = self.path.find_node(mac_files_root)
+				if not mac_files_root:
+					self.bld.fatal('Invalid mac_files_root %r' % self.mac_files_root)
+			res_dir = n1.parent.parent.make_node('Resources')
+			inst_to = getattr(self, 'install_path', '/Applications') + '/%s/Resources' % name
+			for node in self.to_nodes(self.mac_files):
+				relpath = node.path_from(mac_files_root or node.parent)
+				self.create_task('macapp', node, res_dir.make_node(relpath))
+				self.add_install_as(install_to=os.path.join(inst_to, relpath), install_from=node)
+
+		if getattr(self.bld, 'is_install', None):
+			# disable regular binary installation
+			self.install_task.hasrun = Task.SKIP_ME
+
+@feature('cprogram', 'cxxprogram')
+@after_method('apply_link')
+def create_task_macplist(self):
+	"""
+	Creates a :py:class:`waflib.Tools.c_osx.macplist` instance.
+	"""
+	if  self.env.MACAPP or getattr(self, 'mac_app', False):
+		out = self.link_task.outputs[0]
+
+		name = bundle_name_for_output(out)
+
+		dir = self.create_bundle_dirs(name, out)
+		n1 = dir.find_or_declare(['Contents', 'Info.plist'])
+		self.plisttask = plisttask = self.create_task('macplist', [], n1)
+		plisttask.context = {
+			'app_name': self.link_task.outputs[0].name,
+			'env': self.env
+		}
+
+		plist_ctx = getattr(self, 'plist_context', None)
+		if (plist_ctx):
+			plisttask.context.update(plist_ctx)
+
+		if getattr(self, 'mac_plist', False):
+			node = self.path.find_resource(self.mac_plist)
+			if node:
+				plisttask.inputs.append(node)
+			else:
+				plisttask.code = self.mac_plist
+		else:
+			plisttask.code = app_info
+
+		inst_to = getattr(self, 'install_path', '/Applications') + '/%s/Contents/' % name
+		self.add_install_files(install_to=inst_to, install_from=n1)
+
+@feature('cshlib', 'cxxshlib')
+@before_method('apply_link', 'propagate_uselib_vars')
+def apply_bundle(self):
+	"""
+	To make a bundled shared library (a ``.bundle``), set the *mac_bundle* attribute::
+
+		def build(bld):
+			bld.shlib(source='a.c', target='foo', mac_bundle = True)
+
+	To force *all* executables to be transformed into bundles::
+
+		def build(bld):
+			bld.env.MACBUNDLE = True
+			bld.shlib(source='a.c', target='foo')
+	"""
+	if self.env.MACBUNDLE or getattr(self, 'mac_bundle', False):
+		self.env.LINKFLAGS_cshlib = self.env.LINKFLAGS_cxxshlib = [] # disable the '-dynamiclib' flag
+		self.env.cshlib_PATTERN = self.env.cxxshlib_PATTERN = self.env.macbundle_PATTERN
+		use = self.use = self.to_list(getattr(self, 'use', []))
+		if not 'MACBUNDLE' in use:
+			use.append('MACBUNDLE')
+
+app_dirs = ['Contents', 'Contents/MacOS', 'Contents/Resources']
+
+class macapp(Task.Task):
+	"""
+	Creates mac applications
+	"""
+	color = 'PINK'
+	def run(self):
+		self.outputs[0].parent.mkdir()
+		shutil.copy2(self.inputs[0].srcpath(), self.outputs[0].abspath())
+
+class macplist(Task.Task):
+	"""
+	Creates plist files
+	"""
+	color = 'PINK'
+	ext_in = ['.bin']
+	def run(self):
+		if getattr(self, 'code', None):
+			txt = self.code
+		else:
+			txt = self.inputs[0].read()
+		context = getattr(self, 'context', {})
+		txt = txt.format(**context)
+		self.outputs[0].write(txt)
+
diff --git a/Tools/c_preproc.py b/Tools/c_preproc.py
new file mode 100644
index 0000000..7e04b4a
--- /dev/null
+++ b/Tools/c_preproc.py
@@ -0,0 +1,1091 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+C/C++ preprocessor for finding dependencies
+
+Reasons for using the Waf preprocessor by default
+
+#. Some c/c++ extensions (Qt) require a custom preprocessor for obtaining the dependencies (.moc files)
+#. Not all compilers provide .d files for obtaining the dependencies (portability)
+#. A naive file scanner will not catch the constructs such as "#include foo()"
+#. A naive file scanner will catch unnecessary dependencies (change an unused header -> recompile everything)
+
+Regarding the speed concerns:
+
+* the preprocessing is performed only when files must be compiled
+* the macros are evaluated only for #if/#elif/#include
+* system headers are not scanned by default
+
+Now if you do not want the Waf preprocessor, the tool +gccdeps* uses the .d files produced
+during the compilation to track the dependencies (useful when used with the boost libraries).
+It only works with gcc >= 4.4 though.
+
+A dumb preprocessor is also available in the tool *c_dumbpreproc*
+"""
+# TODO: more varargs, pragma once
+
+import re, string, traceback
+from waflib import Logs, Utils, Errors
+
+class PreprocError(Errors.WafError):
+	pass
+
+FILE_CACHE_SIZE = 100000
+LINE_CACHE_SIZE = 100000
+
+POPFILE = '-'
+"Constant representing a special token used in :py:meth:`waflib.Tools.c_preproc.c_parser.start` iteration to switch to a header read previously"
+
+recursion_limit = 150
+"Limit on the amount of files to read in the dependency scanner"
+
+go_absolute = False
+"Set to True to track headers on files in /usr/include, else absolute paths are ignored (but it becomes very slow)"
+
+standard_includes = ['/usr/local/include', '/usr/include']
+if Utils.is_win32:
+	standard_includes = []
+
+use_trigraphs = 0
+"""Apply trigraph rules (False by default)"""
+
+# obsolete, do not use
+strict_quotes = 0
+
+g_optrans = {
+'not':'!',
+'not_eq':'!',
+'and':'&&',
+'and_eq':'&=',
+'or':'||',
+'or_eq':'|=',
+'xor':'^',
+'xor_eq':'^=',
+'bitand':'&',
+'bitor':'|',
+'compl':'~',
+}
+"""Operators such as and/or/xor for c++. Set an empty dict to disable."""
+
+# ignore #warning and #error
+re_lines = re.compile(
+	'^[ \t]*(?:#|%:)[ \t]*(ifdef|ifndef|if|else|elif|endif|include|import|define|undef|pragma)[ \t]*(.*)\r*$',
+	re.IGNORECASE | re.MULTILINE)
+"""Match #include lines"""
+
+re_mac = re.compile("^[a-zA-Z_]\w*")
+"""Match macro definitions"""
+
+re_fun = re.compile('^[a-zA-Z_][a-zA-Z0-9_]*[(]')
+"""Match macro functions"""
+
+re_pragma_once = re.compile('^\s*once\s*', re.IGNORECASE)
+"""Match #pragma once statements"""
+
+re_nl = re.compile('\\\\\r*\n', re.MULTILINE)
+"""Match newlines"""
+
+re_cpp = re.compile(r'//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"', re.DOTALL | re.MULTILINE )
+"""Filter C/C++ comments"""
+
+trig_def = [('??'+a, b) for a, b in zip("=-/!'()<>", r'#~\|^[]{}')]
+"""Trigraph definitions"""
+
+chr_esc = {'0':0, 'a':7, 'b':8, 't':9, 'n':10, 'f':11, 'v':12, 'r':13, '\\':92, "'":39}
+"""Escape characters"""
+
+NUM   = 'i'
+"""Number token"""
+
+OP    = 'O'
+"""Operator token"""
+
+IDENT = 'T'
+"""Identifier token"""
+
+STR   = 's'
+"""String token"""
+
+CHAR  = 'c'
+"""Character token"""
+
+tok_types = [NUM, STR, IDENT, OP]
+"""Token types"""
+
+exp_types = [
+	r"""0[xX](?P<hex>[a-fA-F0-9]+)(?P<qual1>[uUlL]*)|L*?'(?P<char>(\\.|[^\\'])+)'|(?P<n1>\d+)[Ee](?P<exp0>[+-]*?\d+)(?P<float0>[fFlL]*)|(?P<n2>\d*\.\d+)([Ee](?P<exp1>[+-]*?\d+))?(?P<float1>[fFlL]*)|(?P<n4>\d+\.\d*)([Ee](?P<exp2>[+-]*?\d+))?(?P<float2>[fFlL]*)|(?P<oct>0*)(?P<n0>\d+)(?P<qual2>[uUlL]*)""",
+	r'L?"([^"\\]|\\.)*"',
+	r'[a-zA-Z_]\w*',
+	r'%:%:|<<=|>>=|\.\.\.|<<|<%|<:|<=|>>|>=|\+\+|\+=|--|->|-=|\*=|/=|%:|%=|%>|==|&&|&=|\|\||\|=|\^=|:>|!=|##|[\(\)\{\}\[\]<>\?\|\^\*\+&=:!#;,%/\-\?\~\.]',
+]
+"""Expression types"""
+
+re_clexer = re.compile('|'.join(["(?P<%s>%s)" % (name, part) for name, part in zip(tok_types, exp_types)]), re.M)
+"""Match expressions into tokens"""
+
+accepted  = 'a'
+"""Parser state is *accepted*"""
+
+ignored   = 'i'
+"""Parser state is *ignored*, for example preprocessor lines in an #if 0 block"""
+
+undefined = 'u'
+"""Parser state is *undefined* at the moment"""
+
+skipped   = 's'
+"""Parser state is *skipped*, for example preprocessor lines in a #elif 0 block"""
+
+def repl(m):
+	"""Replace function used with :py:attr:`waflib.Tools.c_preproc.re_cpp`"""
+	s = m.group()
+	if s[0] == '/':
+		return ' '
+	return s
+
+prec = {}
+"""
+Operator precedence rules required for parsing expressions of the form::
+
+	#if 1 && 2 != 0
+"""
+ops = ['* / %', '+ -', '<< >>', '< <= >= >', '== !=', '& | ^', '&& ||', ',']
+for x, syms in enumerate(ops):
+	for u in syms.split():
+		prec[u] = x
+
+def reduce_nums(val_1, val_2, val_op):
+	"""
+	Apply arithmetic rules to compute a result
+
+	:param val1: input parameter
+	:type val1: int or string
+	:param val2: input parameter
+	:type val2: int or string
+	:param val_op: C operator in *+*, */*, *-*, etc
+	:type val_op: string
+	:rtype: int
+	"""
+	#print val_1, val_2, val_op
+
+	# now perform the operation, make certain a and b are numeric
+	try:
+		a = 0 + val_1
+	except TypeError:
+		a = int(val_1)
+	try:
+		b = 0 + val_2
+	except TypeError:
+		b = int(val_2)
+
+	d = val_op
+	if d == '%':
+		c = a % b
+	elif d=='+':
+		c = a + b
+	elif d=='-':
+		c = a - b
+	elif d=='*':
+		c = a * b
+	elif d=='/':
+		c = a / b
+	elif d=='^':
+		c = a ^ b
+	elif d=='==':
+		c = int(a == b)
+	elif d=='|'  or d == 'bitor':
+		c = a | b
+	elif d=='||' or d == 'or' :
+		c = int(a or b)
+	elif d=='&'  or d == 'bitand':
+		c = a & b
+	elif d=='&&' or d == 'and':
+		c = int(a and b)
+	elif d=='!=' or d == 'not_eq':
+		c = int(a != b)
+	elif d=='^'  or d == 'xor':
+		c = int(a^b)
+	elif d=='<=':
+		c = int(a <= b)
+	elif d=='<':
+		c = int(a < b)
+	elif d=='>':
+		c = int(a > b)
+	elif d=='>=':
+		c = int(a >= b)
+	elif d=='<<':
+		c = a << b
+	elif d=='>>':
+		c = a >> b
+	else:
+		c = 0
+	return c
+
+def get_num(lst):
+	"""
+	Try to obtain a number from a list of tokens. The token types are defined in :py:attr:`waflib.Tools.ccroot.tok_types`.
+
+	:param lst: list of preprocessor tokens
+	:type lst: list of tuple (tokentype, value)
+	:return: a pair containing the number and the rest of the list
+	:rtype: tuple(value, list)
+	"""
+	if not lst:
+		raise PreprocError('empty list for get_num')
+	(p, v) = lst[0]
+	if p == OP:
+		if v == '(':
+			count_par = 1
+			i = 1
+			while i < len(lst):
+				(p, v) = lst[i]
+
+				if p == OP:
+					if v == ')':
+						count_par -= 1
+						if count_par == 0:
+							break
+					elif v == '(':
+						count_par += 1
+				i += 1
+			else:
+				raise PreprocError('rparen expected %r' % lst)
+
+			(num, _) = get_term(lst[1:i])
+			return (num, lst[i+1:])
+
+		elif v == '+':
+			return get_num(lst[1:])
+		elif v == '-':
+			num, lst = get_num(lst[1:])
+			return (reduce_nums('-1', num, '*'), lst)
+		elif v == '!':
+			num, lst = get_num(lst[1:])
+			return (int(not int(num)), lst)
+		elif v == '~':
+			num, lst = get_num(lst[1:])
+			return (~ int(num), lst)
+		else:
+			raise PreprocError('Invalid op token %r for get_num' % lst)
+	elif p == NUM:
+		return v, lst[1:]
+	elif p == IDENT:
+		# all macros should have been replaced, remaining identifiers eval to 0
+		return 0, lst[1:]
+	else:
+		raise PreprocError('Invalid token %r for get_num' % lst)
+
+def get_term(lst):
+	"""
+	Evaluate an expression recursively, for example::
+
+		1+1+1 -> 2+1 -> 3
+
+	:param lst: list of tokens
+	:type lst: list of tuple(token, value)
+	:return: the value and the remaining tokens
+	:rtype: value, list
+	"""
+
+	if not lst:
+		raise PreprocError('empty list for get_term')
+	num, lst = get_num(lst)
+	if not lst:
+		return (num, [])
+	(p, v) = lst[0]
+	if p == OP:
+		if v == ',':
+			# skip
+			return get_term(lst[1:])
+		elif v == '?':
+			count_par = 0
+			i = 1
+			while i < len(lst):
+				(p, v) = lst[i]
+
+				if p == OP:
+					if v == ')':
+						count_par -= 1
+					elif v == '(':
+						count_par += 1
+					elif v == ':':
+						if count_par == 0:
+							break
+				i += 1
+			else:
+				raise PreprocError('rparen expected %r' % lst)
+
+			if int(num):
+				return get_term(lst[1:i])
+			else:
+				return get_term(lst[i+1:])
+
+		else:
+			num2, lst = get_num(lst[1:])
+
+			if not lst:
+				# no more tokens to process
+				num2 = reduce_nums(num, num2, v)
+				return get_term([(NUM, num2)] + lst)
+
+			# operator precedence
+			p2, v2 = lst[0]
+			if p2 != OP:
+				raise PreprocError('op expected %r' % lst)
+
+			if prec[v2] >= prec[v]:
+				num2 = reduce_nums(num, num2, v)
+				return get_term([(NUM, num2)] + lst)
+			else:
+				num3, lst = get_num(lst[1:])
+				num3 = reduce_nums(num2, num3, v2)
+				return get_term([(NUM, num), (p, v), (NUM, num3)] + lst)
+
+
+	raise PreprocError('cannot reduce %r' % lst)
+
+def reduce_eval(lst):
+	"""
+	Take a list of tokens and output true or false for #if/#elif conditions.
+
+	:param lst: a list of tokens
+	:type lst: list of tuple(token, value)
+	:return: a token
+	:rtype: tuple(NUM, int)
+	"""
+	num, lst = get_term(lst)
+	return (NUM, num)
+
+def stringize(lst):
+	"""
+	Merge a list of tokens into a string
+
+	:param lst: a list of tokens
+	:type lst: list of tuple(token, value)
+	:rtype: string
+	"""
+	lst = [str(v2) for (p2, v2) in lst]
+	return "".join(lst)
+
+def paste_tokens(t1, t2):
+	"""
+	Token pasting works between identifiers, particular operators, and identifiers and numbers::
+
+		a ## b  ->  ab
+		> ## =  ->  >=
+		a ## 2  ->  a2
+
+	:param t1: token
+	:type t1: tuple(type, value)
+	:param t2: token
+	:type t2: tuple(type, value)
+	"""
+	p1 = None
+	if t1[0] == OP and t2[0] == OP:
+		p1 = OP
+	elif t1[0] == IDENT and (t2[0] == IDENT or t2[0] == NUM):
+		p1 = IDENT
+	elif t1[0] == NUM and t2[0] == NUM:
+		p1 = NUM
+	if not p1:
+		raise PreprocError('tokens do not make a valid paste %r and %r' % (t1, t2))
+	return (p1, t1[1] + t2[1])
+
+def reduce_tokens(lst, defs, ban=[]):
+	"""
+	Replace the tokens in lst, using the macros provided in defs, and a list of macros that cannot be re-applied
+
+	:param lst: list of tokens
+	:type lst: list of tuple(token, value)
+	:param defs: macro definitions
+	:type defs: dict
+	:param ban: macros that cannot be substituted (recursion is not allowed)
+	:type ban: list of string
+	:return: the new list of tokens
+	:rtype: value, list
+	"""
+
+	i = 0
+	while i < len(lst):
+		(p, v) = lst[i]
+
+		if p == IDENT and v == "defined":
+			del lst[i]
+			if i < len(lst):
+				(p2, v2) = lst[i]
+				if p2 == IDENT:
+					if v2 in defs:
+						lst[i] = (NUM, 1)
+					else:
+						lst[i] = (NUM, 0)
+				elif p2 == OP and v2 == '(':
+					del lst[i]
+					(p2, v2) = lst[i]
+					del lst[i] # remove the ident, and change the ) for the value
+					if v2 in defs:
+						lst[i] = (NUM, 1)
+					else:
+						lst[i] = (NUM, 0)
+				else:
+					raise PreprocError('Invalid define expression %r' % lst)
+
+		elif p == IDENT and v in defs:
+
+			if isinstance(defs[v], str):
+				a, b = extract_macro(defs[v])
+				defs[v] = b
+			macro_def = defs[v]
+			to_add = macro_def[1]
+
+			if isinstance(macro_def[0], list):
+				# macro without arguments
+				del lst[i]
+				accu = to_add[:]
+				reduce_tokens(accu, defs, ban+[v])
+				for tmp in accu:
+					lst.insert(i, tmp)
+					i += 1
+			else:
+				# collect the arguments for the funcall
+
+				args = []
+				del lst[i]
+
+				if i >= len(lst):
+					raise PreprocError('expected ( after %r (got nothing)' % v)
+
+				(p2, v2) = lst[i]
+				if p2 != OP or v2 != '(':
+					raise PreprocError('expected ( after %r' % v)
+
+				del lst[i]
+
+				one_param = []
+				count_paren = 0
+				while i < len(lst):
+					p2, v2 = lst[i]
+
+					del lst[i]
+					if p2 == OP and count_paren == 0:
+						if v2 == '(':
+							one_param.append((p2, v2))
+							count_paren += 1
+						elif v2 == ')':
+							if one_param:
+								args.append(one_param)
+							break
+						elif v2 == ',':
+							if not one_param:
+								raise PreprocError('empty param in funcall %r' % v)
+							args.append(one_param)
+							one_param = []
+						else:
+							one_param.append((p2, v2))
+					else:
+						one_param.append((p2, v2))
+						if   v2 == '(':
+							count_paren += 1
+						elif v2 == ')':
+							count_paren -= 1
+				else:
+					raise PreprocError('malformed macro')
+
+				# substitute the arguments within the define expression
+				accu = []
+				arg_table = macro_def[0]
+				j = 0
+				while j < len(to_add):
+					(p2, v2) = to_add[j]
+
+					if p2 == OP and v2 == '#':
+						# stringize is for arguments only
+						if j+1 < len(to_add) and to_add[j+1][0] == IDENT and to_add[j+1][1] in arg_table:
+							toks = args[arg_table[to_add[j+1][1]]]
+							accu.append((STR, stringize(toks)))
+							j += 1
+						else:
+							accu.append((p2, v2))
+					elif p2 == OP and v2 == '##':
+						# token pasting, how can man invent such a complicated system?
+						if accu and j+1 < len(to_add):
+							# we have at least two tokens
+
+							t1 = accu[-1]
+
+							if to_add[j+1][0] == IDENT and to_add[j+1][1] in arg_table:
+								toks = args[arg_table[to_add[j+1][1]]]
+
+								if toks:
+									accu[-1] = paste_tokens(t1, toks[0]) #(IDENT, accu[-1][1] + toks[0][1])
+									accu.extend(toks[1:])
+								else:
+									# error, case "a##"
+									accu.append((p2, v2))
+									accu.extend(toks)
+							elif to_add[j+1][0] == IDENT and to_add[j+1][1] == '__VA_ARGS__':
+								# first collect the tokens
+								va_toks = []
+								st = len(macro_def[0])
+								pt = len(args)
+								for x in args[pt-st+1:]:
+									va_toks.extend(x)
+									va_toks.append((OP, ','))
+								if va_toks:
+									va_toks.pop() # extra comma
+								if len(accu)>1:
+									(p3, v3) = accu[-1]
+									(p4, v4) = accu[-2]
+									if v3 == '##':
+										# remove the token paste
+										accu.pop()
+										if v4 == ',' and pt < st:
+											# remove the comma
+											accu.pop()
+								accu += va_toks
+							else:
+								accu[-1] = paste_tokens(t1, to_add[j+1])
+
+							j += 1
+						else:
+							# Invalid paste, case    "##a" or "b##"
+							accu.append((p2, v2))
+
+					elif p2 == IDENT and v2 in arg_table:
+						toks = args[arg_table[v2]]
+						reduce_tokens(toks, defs, ban+[v])
+						accu.extend(toks)
+					else:
+						accu.append((p2, v2))
+
+					j += 1
+
+
+				reduce_tokens(accu, defs, ban+[v])
+
+				for x in range(len(accu)-1, -1, -1):
+					lst.insert(i, accu[x])
+
+		i += 1
+
+
+def eval_macro(lst, defs):
+	"""
+	Reduce the tokens by :py:func:`waflib.Tools.c_preproc.reduce_tokens` and try to return a 0/1 result by :py:func:`waflib.Tools.c_preproc.reduce_eval`.
+
+	:param lst: list of tokens
+	:type lst: list of tuple(token, value)
+	:param defs: macro definitions
+	:type defs: dict
+	:rtype: int
+	"""
+	reduce_tokens(lst, defs, [])
+	if not lst:
+		raise PreprocError('missing tokens to evaluate')
+
+	if lst:
+		p, v = lst[0]
+		if p == IDENT and v not in defs:
+			raise PreprocError('missing macro %r' % lst)
+
+	p, v = reduce_eval(lst)
+	return int(v) != 0
+
+def extract_macro(txt):
+	"""
+	Process a macro definition of the form::
+		 #define f(x, y) x * y
+
+	into a function or a simple macro without arguments
+
+	:param txt: expression to exact a macro definition from
+	:type txt: string
+	:return: a tuple containing the name, the list of arguments and the replacement
+	:rtype: tuple(string, [list, list])
+	"""
+	t = tokenize(txt)
+	if re_fun.search(txt):
+		p, name = t[0]
+
+		p, v = t[1]
+		if p != OP:
+			raise PreprocError('expected (')
+
+		i = 1
+		pindex = 0
+		params = {}
+		prev = '('
+
+		while 1:
+			i += 1
+			p, v = t[i]
+
+			if prev == '(':
+				if p == IDENT:
+					params[v] = pindex
+					pindex += 1
+					prev = p
+				elif p == OP and v == ')':
+					break
+				else:
+					raise PreprocError('unexpected token (3)')
+			elif prev == IDENT:
+				if p == OP and v == ',':
+					prev = v
+				elif p == OP and v == ')':
+					break
+				else:
+					raise PreprocError('comma or ... expected')
+			elif prev == ',':
+				if p == IDENT:
+					params[v] = pindex
+					pindex += 1
+					prev = p
+				elif p == OP and v == '...':
+					raise PreprocError('not implemented (1)')
+				else:
+					raise PreprocError('comma or ... expected (2)')
+			elif prev == '...':
+				raise PreprocError('not implemented (2)')
+			else:
+				raise PreprocError('unexpected else')
+
+		#~ print (name, [params, t[i+1:]])
+		return (name, [params, t[i+1:]])
+	else:
+		(p, v) = t[0]
+		if len(t) > 1:
+			return (v, [[], t[1:]])
+		else:
+			# empty define, assign an empty token
+			return (v, [[], [('T','')]])
+
+re_include = re.compile('^\s*(<(?:.*)>|"(?:.*)")')
+def extract_include(txt, defs):
+	"""
+	Process a line in the form::
+
+		#include foo
+
+	:param txt: include line to process
+	:type txt: string
+	:param defs: macro definitions
+	:type defs: dict
+	:return: the file name
+	:rtype: string
+	"""
+	m = re_include.search(txt)
+	if m:
+		txt = m.group(1)
+		return txt[0], txt[1:-1]
+
+	# perform preprocessing and look at the result, it must match an include
+	toks = tokenize(txt)
+	reduce_tokens(toks, defs, ['waf_include'])
+
+	if not toks:
+		raise PreprocError('could not parse include %r' % txt)
+
+	if len(toks) == 1:
+		if toks[0][0] == STR:
+			return '"', toks[0][1]
+	else:
+		if toks[0][1] == '<' and toks[-1][1] == '>':
+			ret = '<', stringize(toks).lstrip('<').rstrip('>')
+			return ret
+
+	raise PreprocError('could not parse include %r' % txt)
+
+def parse_char(txt):
+	"""
+	Parse a c character
+
+	:param txt: character to parse
+	:type txt: string
+	:return: a character literal
+	:rtype: string
+	"""
+
+	if not txt:
+		raise PreprocError('attempted to parse a null char')
+	if txt[0] != '\\':
+		return ord(txt)
+	c = txt[1]
+	if c == 'x':
+		if len(txt) == 4 and txt[3] in string.hexdigits:
+			return int(txt[2:], 16)
+		return int(txt[2:], 16)
+	elif c.isdigit():
+		if c == '0' and len(txt)==2:
+			return 0
+		for i in 3, 2, 1:
+			if len(txt) > i and txt[1:1+i].isdigit():
+				return (1+i, int(txt[1:1+i], 8))
+	else:
+		try:
+			return chr_esc[c]
+		except KeyError:
+			raise PreprocError('could not parse char literal %r' % txt)
+
+def tokenize(s):
+	"""
+	Convert a string into a list of tokens (shlex.split does not apply to c/c++/d)
+
+	:param s: input to tokenize
+	:type s: string
+	:return: a list of tokens
+	:rtype: list of tuple(token, value)
+	"""
+	return tokenize_private(s)[:] # force a copy of the results
+
+def tokenize_private(s):
+	ret = []
+	for match in re_clexer.finditer(s):
+		m = match.group
+		for name in tok_types:
+			v = m(name)
+			if v:
+				if name == IDENT:
+					if v in g_optrans:
+						name = OP
+					elif v.lower() == "true":
+						v = 1
+						name = NUM
+					elif v.lower() == "false":
+						v = 0
+						name = NUM
+				elif name == NUM:
+					if m('oct'):
+						v = int(v, 8)
+					elif m('hex'):
+						v = int(m('hex'), 16)
+					elif m('n0'):
+						v = m('n0')
+					else:
+						v = m('char')
+						if v:
+							v = parse_char(v)
+						else:
+							v = m('n2') or m('n4')
+				elif name == OP:
+					if v == '%:':
+						v = '#'
+					elif v == '%:%:':
+						v = '##'
+				elif name == STR:
+					# remove the quotes around the string
+					v = v[1:-1]
+				ret.append((name, v))
+				break
+	return ret
+
+def format_defines(lst):
+	ret = []
+	for y in lst:
+		if y:
+			pos = y.find('=')
+			if pos == -1:
+				# "-DFOO" should give "#define FOO 1"
+				ret.append(y)
+			elif pos > 0:
+				# all others are assumed to be -DX=Y
+				ret.append('%s %s' % (y[:pos], y[pos+1:]))
+			else:
+				raise ValueError('Invalid define expression %r' % y)
+	return ret
+
+class c_parser(object):
+	"""
+	Used by :py:func:`waflib.Tools.c_preproc.scan` to parse c/h files. Note that by default,
+	only project headers are parsed.
+	"""
+	def __init__(self, nodepaths=None, defines=None):
+		self.lines = []
+		"""list of lines read"""
+
+		if defines is None:
+			self.defs  = {}
+		else:
+			self.defs  = dict(defines) # make a copy
+		self.state = []
+
+		self.count_files = 0
+		self.currentnode_stack = []
+
+		self.nodepaths = nodepaths or []
+		"""Include paths"""
+
+		self.nodes = []
+		"""List of :py:class:`waflib.Node.Node` found so far"""
+
+		self.names = []
+		"""List of file names that could not be matched by any file"""
+
+		self.curfile = ''
+		"""Current file"""
+
+		self.ban_includes = set()
+		"""Includes that must not be read (#pragma once)"""
+
+		self.listed = set()
+		"""Include nodes/names already listed to avoid duplicates in self.nodes/self.names"""
+
+	def cached_find_resource(self, node, filename):
+		"""
+		Find a file from the input directory
+
+		:param node: directory
+		:type node: :py:class:`waflib.Node.Node`
+		:param filename: header to find
+		:type filename: string
+		:return: the node if found, or None
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		try:
+			cache = node.ctx.preproc_cache_node
+		except AttributeError:
+			cache = node.ctx.preproc_cache_node = Utils.lru_cache(FILE_CACHE_SIZE)
+
+		key = (node, filename)
+		try:
+			return cache[key]
+		except KeyError:
+			ret = node.find_resource(filename)
+			if ret:
+				if getattr(ret, 'children', None):
+					ret = None
+				elif ret.is_child_of(node.ctx.bldnode):
+					tmp = node.ctx.srcnode.search_node(ret.path_from(node.ctx.bldnode))
+					if tmp and getattr(tmp, 'children', None):
+						ret = None
+			cache[key] = ret
+			return ret
+
+	def tryfind(self, filename, kind='"', env=None):
+		"""
+		Try to obtain a node from the filename based from the include paths. Will add
+		the node found to :py:attr:`waflib.Tools.c_preproc.c_parser.nodes` or the file name to
+		:py:attr:`waflib.Tools.c_preproc.c_parser.names` if no corresponding file is found. Called by
+		:py:attr:`waflib.Tools.c_preproc.c_parser.start`.
+
+		:param filename: header to find
+		:type filename: string
+		:return: the node if found
+		:rtype: :py:class:`waflib.Node.Node`
+		"""
+		if filename.endswith('.moc'):
+			# we could let the qt4 module use a subclass, but then the function "scan" below must be duplicated
+			# in the qt4 and in the qt5 classes. So we have two lines here and it is sufficient.
+			self.names.append(filename)
+			return None
+
+		self.curfile = filename
+
+		found = None
+		if kind == '"':
+			if env.MSVC_VERSION:
+				for n in reversed(self.currentnode_stack):
+					found = self.cached_find_resource(n, filename)
+					if found:
+						break
+			else:
+				found = self.cached_find_resource(self.currentnode_stack[-1], filename)
+
+		if not found:
+			for n in self.nodepaths:
+				found = self.cached_find_resource(n, filename)
+				if found:
+					break
+
+		listed = self.listed
+		if found and not found in self.ban_includes:
+			if found not in listed:
+				listed.add(found)
+				self.nodes.append(found)
+			self.addlines(found)
+		else:
+			if filename not in listed:
+				listed.add(filename)
+				self.names.append(filename)
+		return found
+
+	def filter_comments(self, node):
+		"""
+		Filter the comments from a c/h file, and return the preprocessor lines.
+		The regexps :py:attr:`waflib.Tools.c_preproc.re_cpp`, :py:attr:`waflib.Tools.c_preproc.re_nl` and :py:attr:`waflib.Tools.c_preproc.re_lines` are used internally.
+
+		:return: the preprocessor directives as a list of (keyword, line)
+		:rtype: a list of string pairs
+		"""
+		# return a list of tuples : keyword, line
+		code = node.read()
+		if use_trigraphs:
+			for (a, b) in trig_def:
+				code = code.split(a).join(b)
+		code = re_nl.sub('', code)
+		code = re_cpp.sub(repl, code)
+		return re_lines.findall(code)
+
+	def parse_lines(self, node):
+		try:
+			cache = node.ctx.preproc_cache_lines
+		except AttributeError:
+			cache = node.ctx.preproc_cache_lines = Utils.lru_cache(LINE_CACHE_SIZE)
+		try:
+			return cache[node]
+		except KeyError:
+			cache[node] = lines = self.filter_comments(node)
+			lines.append((POPFILE, ''))
+			lines.reverse()
+			return lines
+
+	def addlines(self, node):
+		"""
+		Add the lines from a header in the list of preprocessor lines to parse
+
+		:param node: header
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+
+		self.currentnode_stack.append(node.parent)
+
+		self.count_files += 1
+		if self.count_files > recursion_limit:
+			# issue #812
+			raise PreprocError('recursion limit exceeded')
+
+		if Logs.verbose:
+			Logs.debug('preproc: reading file %r', node)
+		try:
+			lines = self.parse_lines(node)
+		except EnvironmentError:
+			raise PreprocError('could not read the file %r' % node)
+		except Exception:
+			if Logs.verbose > 0:
+				Logs.error('parsing %r failed %s', node, traceback.format_exc())
+		else:
+			self.lines.extend(lines)
+
+	def start(self, node, env):
+		"""
+		Preprocess a source file to obtain the dependencies, which are accumulated to :py:attr:`waflib.Tools.c_preproc.c_parser.nodes`
+		and :py:attr:`waflib.Tools.c_preproc.c_parser.names`.
+
+		:param node: source file
+		:type node: :py:class:`waflib.Node.Node`
+		:param env: config set containing additional defines to take into account
+		:type env: :py:class:`waflib.ConfigSet.ConfigSet`
+		"""
+		Logs.debug('preproc: scanning %s (in %s)', node.name, node.parent.name)
+
+		self.current_file = node
+		self.addlines(node)
+
+		# macros may be defined on the command-line, so they must be parsed as if they were part of the file
+		if env.DEFINES:
+			lst = format_defines(env.DEFINES)
+			lst.reverse()
+			self.lines.extend([('define', x) for x in lst])
+
+		while self.lines:
+			(token, line) = self.lines.pop()
+			if token == POPFILE:
+				self.count_files -= 1
+				self.currentnode_stack.pop()
+				continue
+
+			try:
+				state = self.state
+
+				# make certain we define the state if we are about to enter in an if block
+				if token[:2] == 'if':
+					state.append(undefined)
+				elif token == 'endif':
+					state.pop()
+
+				# skip lines when in a dead 'if' branch, wait for the endif
+				if token[0] != 'e':
+					if skipped in self.state or ignored in self.state:
+						continue
+
+				if token == 'if':
+					ret = eval_macro(tokenize(line), self.defs)
+					if ret:
+						state[-1] = accepted
+					else:
+						state[-1] = ignored
+				elif token == 'ifdef':
+					m = re_mac.match(line)
+					if m and m.group() in self.defs:
+						state[-1] = accepted
+					else:
+						state[-1] = ignored
+				elif token == 'ifndef':
+					m = re_mac.match(line)
+					if m and m.group() in self.defs:
+						state[-1] = ignored
+					else:
+						state[-1] = accepted
+				elif token == 'include' or token == 'import':
+					(kind, inc) = extract_include(line, self.defs)
+					self.current_file = self.tryfind(inc, kind, env)
+					if token == 'import':
+						self.ban_includes.add(self.current_file)
+				elif token == 'elif':
+					if state[-1] == accepted:
+						state[-1] = skipped
+					elif state[-1] == ignored:
+						if eval_macro(tokenize(line), self.defs):
+							state[-1] = accepted
+				elif token == 'else':
+					if state[-1] == accepted:
+						state[-1] = skipped
+					elif state[-1] == ignored:
+						state[-1] = accepted
+				elif token == 'define':
+					try:
+						self.defs[self.define_name(line)] = line
+					except AttributeError:
+						raise PreprocError('Invalid define line %r' % line)
+				elif token == 'undef':
+					m = re_mac.match(line)
+					if m and m.group() in self.defs:
+						self.defs.__delitem__(m.group())
+						#print "undef %s" % name
+				elif token == 'pragma':
+					if re_pragma_once.match(line.lower()):
+						self.ban_includes.add(self.current_file)
+			except Exception as e:
+				if Logs.verbose:
+					Logs.debug('preproc: line parsing failed (%s): %s %s', e, line, traceback.format_exc())
+
+	def define_name(self, line):
+		"""
+		:param line: define line
+		:type line: string
+		:rtype: string
+		:return: the define name
+		"""
+		return re_mac.match(line).group()
+
+def scan(task):
+	"""
+	Get the dependencies using a c/c++ preprocessor, this is required for finding dependencies of the kind::
+
+		#include some_macro()
+
+	This function is bound as a task method on :py:class:`waflib.Tools.c.c` and :py:class:`waflib.Tools.cxx.cxx` for example
+	"""
+	try:
+		incn = task.generator.includes_nodes
+	except AttributeError:
+		raise Errors.WafError('%r is missing a feature such as "c", "cxx" or "includes": ' % task.generator)
+
+	if go_absolute:
+		nodepaths = incn + [task.generator.bld.root.find_dir(x) for x in standard_includes]
+	else:
+		nodepaths = [x for x in incn if x.is_child_of(x.ctx.srcnode) or x.is_child_of(x.ctx.bldnode)]
+
+	tmp = c_parser(nodepaths)
+	tmp.start(task.inputs[0], task.env)
+	return (tmp.nodes, tmp.names)
diff --git a/Tools/c_tests.py b/Tools/c_tests.py
new file mode 100644
index 0000000..f858df5
--- /dev/null
+++ b/Tools/c_tests.py
@@ -0,0 +1,229 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2016-2018 (ita)
+
+"""
+Various configuration tests.
+"""
+
+from waflib import Task
+from waflib.Configure import conf
+from waflib.TaskGen import feature, before_method, after_method
+
+LIB_CODE = '''
+#ifdef _MSC_VER
+#define testEXPORT __declspec(dllexport)
+#else
+#define testEXPORT
+#endif
+testEXPORT int lib_func(void) { return 9; }
+'''
+
+MAIN_CODE = '''
+#ifdef _MSC_VER
+#define testEXPORT __declspec(dllimport)
+#else
+#define testEXPORT
+#endif
+testEXPORT int lib_func(void);
+int main(int argc, char **argv) {
+	(void)argc; (void)argv;
+	return !(lib_func() == 9);
+}
+'''
+
+@feature('link_lib_test')
+@before_method('process_source')
+def link_lib_test_fun(self):
+	"""
+	The configuration test :py:func:`waflib.Configure.run_build` declares a unique task generator,
+	so we need to create other task generators from here to check if the linker is able to link libraries.
+	"""
+	def write_test_file(task):
+		task.outputs[0].write(task.generator.code)
+
+	rpath = []
+	if getattr(self, 'add_rpath', False):
+		rpath = [self.bld.path.get_bld().abspath()]
+
+	mode = self.mode
+	m = '%s %s' % (mode, mode)
+	ex = self.test_exec and 'test_exec' or ''
+	bld = self.bld
+	bld(rule=write_test_file, target='test.' + mode, code=LIB_CODE)
+	bld(rule=write_test_file, target='main.' + mode, code=MAIN_CODE)
+	bld(features='%sshlib' % m, source='test.' + mode, target='test')
+	bld(features='%sprogram %s' % (m, ex), source='main.' + mode, target='app', use='test', rpath=rpath)
+
+@conf
+def check_library(self, mode=None, test_exec=True):
+	"""
+	Checks if libraries can be linked with the current linker. Uses :py:func:`waflib.Tools.c_tests.link_lib_test_fun`.
+
+	:param mode: c or cxx or d
+	:type mode: string
+	"""
+	if not mode:
+		mode = 'c'
+		if self.env.CXX:
+			mode = 'cxx'
+	self.check(
+		compile_filename = [],
+		features = 'link_lib_test',
+		msg = 'Checking for libraries',
+		mode = mode,
+		test_exec = test_exec)
+
+########################################################################################
+
+INLINE_CODE = '''
+typedef int foo_t;
+static %s foo_t static_foo () {return 0; }
+%s foo_t foo () {
+	return 0;
+}
+'''
+INLINE_VALUES = ['inline', '__inline__', '__inline']
+
+@conf
+def check_inline(self, **kw):
+	"""
+	Checks for the right value for inline macro.
+	Define INLINE_MACRO to 1 if the define is found.
+	If the inline macro is not 'inline', add a define to the ``config.h`` (#define inline __inline__)
+
+	:param define_name: define INLINE_MACRO by default to 1 if the macro is defined
+	:type define_name: string
+	:param features: by default *c* or *cxx* depending on the compiler present
+	:type features: list of string
+	"""
+	self.start_msg('Checking for inline')
+
+	if not 'define_name' in kw:
+		kw['define_name'] = 'INLINE_MACRO'
+	if not 'features' in kw:
+		if self.env.CXX:
+			kw['features'] = ['cxx']
+		else:
+			kw['features'] = ['c']
+
+	for x in INLINE_VALUES:
+		kw['fragment'] = INLINE_CODE % (x, x)
+
+		try:
+			self.check(**kw)
+		except self.errors.ConfigurationError:
+			continue
+		else:
+			self.end_msg(x)
+			if x != 'inline':
+				self.define('inline', x, quote=False)
+			return x
+	self.fatal('could not use inline functions')
+
+########################################################################################
+
+LARGE_FRAGMENT = '''#include <unistd.h>
+int main(int argc, char **argv) {
+	(void)argc; (void)argv;
+	return !(sizeof(off_t) >= 8);
+}
+'''
+
+@conf
+def check_large_file(self, **kw):
+	"""
+	Checks for large file support and define the macro HAVE_LARGEFILE
+	The test is skipped on win32 systems (DEST_BINFMT == pe).
+
+	:param define_name: define to set, by default *HAVE_LARGEFILE*
+	:type define_name: string
+	:param execute: execute the test (yes by default)
+	:type execute: bool
+	"""
+	if not 'define_name' in kw:
+		kw['define_name'] = 'HAVE_LARGEFILE'
+	if not 'execute' in kw:
+		kw['execute'] = True
+
+	if not 'features' in kw:
+		if self.env.CXX:
+			kw['features'] = ['cxx', 'cxxprogram']
+		else:
+			kw['features'] = ['c', 'cprogram']
+
+	kw['fragment'] = LARGE_FRAGMENT
+
+	kw['msg'] = 'Checking for large file support'
+	ret = True
+	try:
+		if self.env.DEST_BINFMT != 'pe':
+			ret = self.check(**kw)
+	except self.errors.ConfigurationError:
+		pass
+	else:
+		if ret:
+			return True
+
+	kw['msg'] = 'Checking for -D_FILE_OFFSET_BITS=64'
+	kw['defines'] = ['_FILE_OFFSET_BITS=64']
+	try:
+		ret = self.check(**kw)
+	except self.errors.ConfigurationError:
+		pass
+	else:
+		self.define('_FILE_OFFSET_BITS', 64)
+		return ret
+
+	self.fatal('There is no support for large files')
+
+########################################################################################
+
+ENDIAN_FRAGMENT = '''
+short int ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+short int ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+int use_ascii (int i) {
+	return ascii_mm[i] + ascii_ii[i];
+}
+short int ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+short int ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+int use_ebcdic (int i) {
+	return ebcdic_mm[i] + ebcdic_ii[i];
+}
+extern int foo;
+'''
+
+class grep_for_endianness(Task.Task):
+	"""
+	Task that reads a binary and tries to determine the endianness
+	"""
+	color = 'PINK'
+	def run(self):
+		txt = self.inputs[0].read(flags='rb').decode('latin-1')
+		if txt.find('LiTTleEnDian') > -1:
+			self.generator.tmp.append('little')
+		elif txt.find('BIGenDianSyS') > -1:
+			self.generator.tmp.append('big')
+		else:
+			return -1
+
+@feature('grep_for_endianness')
+@after_method('process_source')
+def grep_for_endianness_fun(self):
+	"""
+	Used by the endianness configuration test
+	"""
+	self.create_task('grep_for_endianness', self.compiled_tasks[0].outputs[0])
+
+@conf
+def check_endianness(self):
+	"""
+	Executes a configuration test to determine the endianness
+	"""
+	tmp = []
+	def check_msg(self):
+		return tmp[0]
+	self.check(fragment=ENDIAN_FRAGMENT, features='c grep_for_endianness',
+		msg='Checking for endianness', define='ENDIANNESS', tmp=tmp, okmsg=check_msg)
+	return tmp[0]
+
diff --git a/Tools/ccroot.py b/Tools/ccroot.py
new file mode 100644
index 0000000..cfef8bf
--- /dev/null
+++ b/Tools/ccroot.py
@@ -0,0 +1,776 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"""
+Classes and methods shared by tools providing support for C-like language such
+as C/C++/D/Assembly/Go (this support module is almost never used alone).
+"""
+
+import os, re
+from waflib import Task, Utils, Node, Errors, Logs
+from waflib.TaskGen import after_method, before_method, feature, taskgen_method, extension
+from waflib.Tools import c_aliases, c_preproc, c_config, c_osx, c_tests
+from waflib.Configure import conf
+
+SYSTEM_LIB_PATHS = ['/usr/lib64', '/usr/lib', '/usr/local/lib64', '/usr/local/lib']
+
+USELIB_VARS = Utils.defaultdict(set)
+"""
+Mapping for features to :py:class:`waflib.ConfigSet.ConfigSet` variables. See :py:func:`waflib.Tools.ccroot.propagate_uselib_vars`.
+"""
+
+USELIB_VARS['c']        = set(['INCLUDES', 'FRAMEWORKPATH', 'DEFINES', 'CPPFLAGS', 'CCDEPS', 'CFLAGS', 'ARCH'])
+USELIB_VARS['cxx']      = set(['INCLUDES', 'FRAMEWORKPATH', 'DEFINES', 'CPPFLAGS', 'CXXDEPS', 'CXXFLAGS', 'ARCH'])
+USELIB_VARS['d']        = set(['INCLUDES', 'DFLAGS'])
+USELIB_VARS['includes'] = set(['INCLUDES', 'FRAMEWORKPATH', 'ARCH'])
+
+USELIB_VARS['cprogram'] = USELIB_VARS['cxxprogram'] = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS', 'FRAMEWORK', 'FRAMEWORKPATH', 'ARCH', 'LDFLAGS'])
+USELIB_VARS['cshlib']   = USELIB_VARS['cxxshlib']   = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS', 'FRAMEWORK', 'FRAMEWORKPATH', 'ARCH', 'LDFLAGS'])
+USELIB_VARS['cstlib']   = USELIB_VARS['cxxstlib']   = set(['ARFLAGS', 'LINKDEPS'])
+
+USELIB_VARS['dprogram'] = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS'])
+USELIB_VARS['dshlib']   = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS'])
+USELIB_VARS['dstlib']   = set(['ARFLAGS', 'LINKDEPS'])
+
+USELIB_VARS['asm'] = set(['ASFLAGS'])
+
+# =================================================================================================
+
+@taskgen_method
+def create_compiled_task(self, name, node):
+	"""
+	Create the compilation task: c, cxx, asm, etc. The output node is created automatically (object file with a typical **.o** extension).
+	The task is appended to the list *compiled_tasks* which is then used by :py:func:`waflib.Tools.ccroot.apply_link`
+
+	:param name: name of the task class
+	:type name: string
+	:param node: the file to compile
+	:type node: :py:class:`waflib.Node.Node`
+	:return: The task created
+	:rtype: :py:class:`waflib.Task.Task`
+	"""
+	out = '%s.%d.o' % (node.name, self.idx)
+	task = self.create_task(name, node, node.parent.find_or_declare(out))
+	try:
+		self.compiled_tasks.append(task)
+	except AttributeError:
+		self.compiled_tasks = [task]
+	return task
+
+@taskgen_method
+def to_incnodes(self, inlst):
+	"""
+	Task generator method provided to convert a list of string/nodes into a list of includes folders.
+
+	The paths are assumed to be relative to the task generator path, except if they begin by **#**
+	in which case they are searched from the top-level directory (``bld.srcnode``).
+	The folders are simply assumed to be existing.
+
+	The node objects in the list are returned in the output list. The strings are converted
+	into node objects if possible. The node is searched from the source directory, and if a match is found,
+	the equivalent build directory is created and added to the returned list too. When a folder cannot be found, it is ignored.
+
+	:param inlst: list of folders
+	:type inlst: space-delimited string or a list of string/nodes
+	:rtype: list of :py:class:`waflib.Node.Node`
+	:return: list of include folders as nodes
+	"""
+	lst = []
+	seen = set()
+	for x in self.to_list(inlst):
+		if x in seen or not x:
+			continue
+		seen.add(x)
+
+		# with a real lot of targets, it is sometimes interesting to cache the results below
+		if isinstance(x, Node.Node):
+			lst.append(x)
+		else:
+			if os.path.isabs(x):
+				lst.append(self.bld.root.make_node(x) or x)
+			else:
+				if x[0] == '#':
+					p = self.bld.bldnode.make_node(x[1:])
+					v = self.bld.srcnode.make_node(x[1:])
+				else:
+					p = self.path.get_bld().make_node(x)
+					v = self.path.make_node(x)
+				if p.is_child_of(self.bld.bldnode):
+					p.mkdir()
+				lst.append(p)
+				lst.append(v)
+	return lst
+
+@feature('c', 'cxx', 'd', 'asm', 'fc', 'includes')
+@after_method('propagate_uselib_vars', 'process_source')
+def apply_incpaths(self):
+	"""
+	Task generator method that processes the attribute *includes*::
+
+		tg = bld(features='includes', includes='.')
+
+	The folders only need to be relative to the current directory, the equivalent build directory is
+	added automatically (for headers created in the build directory). This enable using a build directory
+	or not (``top == out``).
+
+	This method will add a list of nodes read by :py:func:`waflib.Tools.ccroot.to_incnodes` in ``tg.env.INCPATHS``,
+	and the list of include paths in ``tg.env.INCLUDES``.
+	"""
+
+	lst = self.to_incnodes(self.to_list(getattr(self, 'includes', [])) + self.env.INCLUDES)
+	self.includes_nodes = lst
+	cwd = self.get_cwd()
+	self.env.INCPATHS = [x.path_from(cwd) for x in lst]
+
+class link_task(Task.Task):
+	"""
+	Base class for all link tasks. A task generator is supposed to have at most one link task bound in the attribute *link_task*. See :py:func:`waflib.Tools.ccroot.apply_link`.
+
+	.. inheritance-diagram:: waflib.Tools.ccroot.stlink_task waflib.Tools.c.cprogram waflib.Tools.c.cshlib waflib.Tools.cxx.cxxstlib  waflib.Tools.cxx.cxxprogram waflib.Tools.cxx.cxxshlib waflib.Tools.d.dprogram waflib.Tools.d.dshlib waflib.Tools.d.dstlib waflib.Tools.ccroot.fake_shlib waflib.Tools.ccroot.fake_stlib waflib.Tools.asm.asmprogram waflib.Tools.asm.asmshlib waflib.Tools.asm.asmstlib
+	"""
+	color   = 'YELLOW'
+
+	weight  = 3
+	"""Try to process link tasks as early as possible"""
+
+	inst_to = None
+	"""Default installation path for the link task outputs, or None to disable"""
+
+	chmod   = Utils.O755
+	"""Default installation mode for the link task outputs"""
+
+	def add_target(self, target):
+		"""
+		Process the *target* attribute to add the platform-specific prefix/suffix such as *.so* or *.exe*.
+		The settings are retrieved from ``env.clsname_PATTERN``
+		"""
+		if isinstance(target, str):
+			base = self.generator.path
+			if target.startswith('#'):
+				# for those who like flat structures
+				target = target[1:]
+				base = self.generator.bld.bldnode
+
+			pattern = self.env[self.__class__.__name__ + '_PATTERN']
+			if not pattern:
+				pattern = '%s'
+			folder, name = os.path.split(target)
+
+			if self.__class__.__name__.find('shlib') > 0 and getattr(self.generator, 'vnum', None):
+				nums = self.generator.vnum.split('.')
+				if self.env.DEST_BINFMT == 'pe':
+					# include the version in the dll file name,
+					# the import lib file name stays unversioned.
+					name = name + '-' + nums[0]
+				elif self.env.DEST_OS == 'openbsd':
+					pattern = '%s.%s' % (pattern, nums[0])
+					if len(nums) >= 2:
+						pattern += '.%s' % nums[1]
+
+			if folder:
+				tmp = folder + os.sep + pattern % name
+			else:
+				tmp = pattern % name
+			target = base.find_or_declare(tmp)
+		self.set_outputs(target)
+
+	def exec_command(self, *k, **kw):
+		ret = super(link_task, self).exec_command(*k, **kw)
+		if not ret and self.env.DO_MANIFEST:
+			ret = self.exec_mf()
+		return ret
+
+	def exec_mf(self):
+		"""
+		Create manifest files for VS-like compilers (msvc, ifort, ...)
+		"""
+		if not self.env.MT:
+			return 0
+
+		manifest = None
+		for out_node in self.outputs:
+			if out_node.name.endswith('.manifest'):
+				manifest = out_node.abspath()
+				break
+		else:
+			# Should never get here.  If we do, it means the manifest file was
+			# never added to the outputs list, thus we don't have a manifest file
+			# to embed, so we just return.
+			return 0
+
+		# embedding mode. Different for EXE's and DLL's.
+		# see: http://msdn2.microsoft.com/en-us/library/ms235591(VS.80).aspx
+		mode = ''
+		for x in Utils.to_list(self.generator.features):
+			if x in ('cprogram', 'cxxprogram', 'fcprogram', 'fcprogram_test'):
+				mode = 1
+			elif x in ('cshlib', 'cxxshlib', 'fcshlib'):
+				mode = 2
+
+		Logs.debug('msvc: embedding manifest in mode %r', mode)
+
+		lst = [] + self.env.MT
+		lst.extend(Utils.to_list(self.env.MTFLAGS))
+		lst.extend(['-manifest', manifest])
+		lst.append('-outputresource:%s;%s' % (self.outputs[0].abspath(), mode))
+
+		return super(link_task, self).exec_command(lst)
+
+class stlink_task(link_task):
+	"""
+	Base for static link tasks, which use *ar* most of the time.
+	The target is always removed before being written.
+	"""
+	run_str = '${AR} ${ARFLAGS} ${AR_TGT_F}${TGT} ${AR_SRC_F}${SRC}'
+
+	chmod   = Utils.O644
+	"""Default installation mode for the static libraries"""
+
+def rm_tgt(cls):
+	old = cls.run
+	def wrap(self):
+		try:
+			os.remove(self.outputs[0].abspath())
+		except OSError:
+			pass
+		return old(self)
+	setattr(cls, 'run', wrap)
+rm_tgt(stlink_task)
+
+@feature('c', 'cxx', 'd', 'fc', 'asm')
+@after_method('process_source')
+def apply_link(self):
+	"""
+	Collect the tasks stored in ``compiled_tasks`` (created by :py:func:`waflib.Tools.ccroot.create_compiled_task`), and
+	use the outputs for a new instance of :py:class:`waflib.Tools.ccroot.link_task`. The class to use is the first link task
+	matching a name from the attribute *features*, for example::
+
+			def build(bld):
+				tg = bld(features='cxx cxxprogram cprogram', source='main.c', target='app')
+
+	will create the task ``tg.link_task`` as a new instance of :py:class:`waflib.Tools.cxx.cxxprogram`
+	"""
+
+	for x in self.features:
+		if x == 'cprogram' and 'cxx' in self.features: # limited compat
+			x = 'cxxprogram'
+		elif x == 'cshlib' and 'cxx' in self.features:
+			x = 'cxxshlib'
+
+		if x in Task.classes:
+			if issubclass(Task.classes[x], link_task):
+				link = x
+				break
+	else:
+		return
+
+	objs = [t.outputs[0] for t in getattr(self, 'compiled_tasks', [])]
+	self.link_task = self.create_task(link, objs)
+	self.link_task.add_target(self.target)
+
+	# remember that the install paths are given by the task generators
+	try:
+		inst_to = self.install_path
+	except AttributeError:
+		inst_to = self.link_task.inst_to
+	if inst_to:
+		# install a copy of the node list we have at this moment (implib not added)
+		self.install_task = self.add_install_files(
+			install_to=inst_to, install_from=self.link_task.outputs[:],
+			chmod=self.link_task.chmod, task=self.link_task)
+
+@taskgen_method
+def use_rec(self, name, **kw):
+	"""
+	Processes the ``use`` keyword recursively. This method is kind of private and only meant to be used from ``process_use``
+	"""
+
+	if name in self.tmp_use_not or name in self.tmp_use_seen:
+		return
+
+	try:
+		y = self.bld.get_tgen_by_name(name)
+	except Errors.WafError:
+		self.uselib.append(name)
+		self.tmp_use_not.add(name)
+		return
+
+	self.tmp_use_seen.append(name)
+	y.post()
+
+	# bind temporary attributes on the task generator
+	y.tmp_use_objects = objects = kw.get('objects', True)
+	y.tmp_use_stlib   = stlib   = kw.get('stlib', True)
+	try:
+		link_task = y.link_task
+	except AttributeError:
+		y.tmp_use_var = ''
+	else:
+		objects = False
+		if not isinstance(link_task, stlink_task):
+			stlib = False
+			y.tmp_use_var = 'LIB'
+		else:
+			y.tmp_use_var = 'STLIB'
+
+	p = self.tmp_use_prec
+	for x in self.to_list(getattr(y, 'use', [])):
+		if self.env["STLIB_" + x]:
+			continue
+		try:
+			p[x].append(name)
+		except KeyError:
+			p[x] = [name]
+		self.use_rec(x, objects=objects, stlib=stlib)
+
+@feature('c', 'cxx', 'd', 'use', 'fc')
+@before_method('apply_incpaths', 'propagate_uselib_vars')
+@after_method('apply_link', 'process_source')
+def process_use(self):
+	"""
+	Process the ``use`` attribute which contains a list of task generator names::
+
+		def build(bld):
+			bld.shlib(source='a.c', target='lib1')
+			bld.program(source='main.c', target='app', use='lib1')
+
+	See :py:func:`waflib.Tools.ccroot.use_rec`.
+	"""
+
+	use_not = self.tmp_use_not = set()
+	self.tmp_use_seen = [] # we would like an ordered set
+	use_prec = self.tmp_use_prec = {}
+	self.uselib = self.to_list(getattr(self, 'uselib', []))
+	self.includes = self.to_list(getattr(self, 'includes', []))
+	names = self.to_list(getattr(self, 'use', []))
+
+	for x in names:
+		self.use_rec(x)
+
+	for x in use_not:
+		if x in use_prec:
+			del use_prec[x]
+
+	# topological sort
+	out = self.tmp_use_sorted = []
+	tmp = []
+	for x in self.tmp_use_seen:
+		for k in use_prec.values():
+			if x in k:
+				break
+		else:
+			tmp.append(x)
+
+	while tmp:
+		e = tmp.pop()
+		out.append(e)
+		try:
+			nlst = use_prec[e]
+		except KeyError:
+			pass
+		else:
+			del use_prec[e]
+			for x in nlst:
+				for y in use_prec:
+					if x in use_prec[y]:
+						break
+				else:
+					tmp.append(x)
+	if use_prec:
+		raise Errors.WafError('Cycle detected in the use processing %r' % use_prec)
+	out.reverse()
+
+	link_task = getattr(self, 'link_task', None)
+	for x in out:
+		y = self.bld.get_tgen_by_name(x)
+		var = y.tmp_use_var
+		if var and link_task:
+			if var == 'LIB' or y.tmp_use_stlib or x in names:
+				self.env.append_value(var, [y.target[y.target.rfind(os.sep) + 1:]])
+				self.link_task.dep_nodes.extend(y.link_task.outputs)
+				tmp_path = y.link_task.outputs[0].parent.path_from(self.get_cwd())
+				self.env.append_unique(var + 'PATH', [tmp_path])
+		else:
+			if y.tmp_use_objects:
+				self.add_objects_from_tgen(y)
+
+		if getattr(y, 'export_includes', None):
+			# self.includes may come from a global variable #2035
+			self.includes = self.includes + y.to_incnodes(y.export_includes)
+
+		if getattr(y, 'export_defines', None):
+			self.env.append_value('DEFINES', self.to_list(y.export_defines))
+
+
+	# and finally, add the use variables (no recursion needed)
+	for x in names:
+		try:
+			y = self.bld.get_tgen_by_name(x)
+		except Errors.WafError:
+			if not self.env['STLIB_' + x] and not x in self.uselib:
+				self.uselib.append(x)
+		else:
+			for k in self.to_list(getattr(y, 'use', [])):
+				if not self.env['STLIB_' + k] and not k in self.uselib:
+					self.uselib.append(k)
+
+@taskgen_method
+def accept_node_to_link(self, node):
+	"""
+	PRIVATE INTERNAL USE ONLY
+	"""
+	return not node.name.endswith('.pdb')
+
+@taskgen_method
+def add_objects_from_tgen(self, tg):
+	"""
+	Add the objects from the depending compiled tasks as link task inputs.
+
+	Some objects are filtered: for instance, .pdb files are added
+	to the compiled tasks but not to the link tasks (to avoid errors)
+	PRIVATE INTERNAL USE ONLY
+	"""
+	try:
+		link_task = self.link_task
+	except AttributeError:
+		pass
+	else:
+		for tsk in getattr(tg, 'compiled_tasks', []):
+			for x in tsk.outputs:
+				if self.accept_node_to_link(x):
+					link_task.inputs.append(x)
+
+@taskgen_method
+def get_uselib_vars(self):
+	"""
+	:return: the *uselib* variables associated to the *features* attribute (see :py:attr:`waflib.Tools.ccroot.USELIB_VARS`)
+	:rtype: list of string
+	"""
+	_vars = set()
+	for x in self.features:
+		if x in USELIB_VARS:
+			_vars |= USELIB_VARS[x]
+	return _vars
+
+@feature('c', 'cxx', 'd', 'fc', 'javac', 'cs', 'uselib', 'asm')
+@after_method('process_use')
+def propagate_uselib_vars(self):
+	"""
+	Process uselib variables for adding flags. For example, the following target::
+
+		def build(bld):
+			bld.env.AFLAGS_aaa = ['bar']
+			from waflib.Tools.ccroot import USELIB_VARS
+			USELIB_VARS['aaa'] = ['AFLAGS']
+
+			tg = bld(features='aaa', aflags='test')
+
+	The *aflags* attribute will be processed and this method will set::
+
+			tg.env.AFLAGS = ['bar', 'test']
+	"""
+	_vars = self.get_uselib_vars()
+	env = self.env
+	app = env.append_value
+	feature_uselib = self.features + self.to_list(getattr(self, 'uselib', []))
+	for var in _vars:
+		y = var.lower()
+		val = getattr(self, y, [])
+		if val:
+			app(var, self.to_list(val))
+
+		for x in feature_uselib:
+			val = env['%s_%s' % (var, x)]
+			if val:
+				app(var, val)
+
+# ============ the code above must not know anything about import libs ==========
+
+@feature('cshlib', 'cxxshlib', 'fcshlib')
+@after_method('apply_link')
+def apply_implib(self):
+	"""
+	Handle dlls and their import libs on Windows-like systems.
+
+	A ``.dll.a`` file called *import library* is generated.
+	It must be installed as it is required for linking the library.
+	"""
+	if not self.env.DEST_BINFMT == 'pe':
+		return
+
+	dll = self.link_task.outputs[0]
+	if isinstance(self.target, Node.Node):
+		name = self.target.name
+	else:
+		name = os.path.split(self.target)[1]
+	implib = self.env.implib_PATTERN % name
+	implib = dll.parent.find_or_declare(implib)
+	self.env.append_value('LINKFLAGS', self.env.IMPLIB_ST % implib.bldpath())
+	self.link_task.outputs.append(implib)
+
+	if getattr(self, 'defs', None) and self.env.DEST_BINFMT == 'pe':
+		node = self.path.find_resource(self.defs)
+		if not node:
+			raise Errors.WafError('invalid def file %r' % self.defs)
+		if self.env.def_PATTERN:
+			self.env.append_value('LINKFLAGS', self.env.def_PATTERN % node.path_from(self.get_cwd()))
+			self.link_task.dep_nodes.append(node)
+		else:
+			# gcc for windows takes *.def file as input without any special flag
+			self.link_task.inputs.append(node)
+
+	# where to put the import library
+	if getattr(self, 'install_task', None):
+		try:
+			# user has given a specific installation path for the import library
+			inst_to = self.install_path_implib
+		except AttributeError:
+			try:
+				# user has given an installation path for the main library, put the import library in it
+				inst_to = self.install_path
+			except AttributeError:
+				# else, put the library in BINDIR and the import library in LIBDIR
+				inst_to = '${IMPLIBDIR}'
+				self.install_task.install_to = '${BINDIR}'
+				if not self.env.IMPLIBDIR:
+					self.env.IMPLIBDIR = self.env.LIBDIR
+		self.implib_install_task = self.add_install_files(install_to=inst_to, install_from=implib,
+			chmod=self.link_task.chmod, task=self.link_task)
+
+# ============ the code above must not know anything about vnum processing on unix platforms =========
+
+re_vnum = re.compile('^([1-9]\\d*|0)([.]([1-9]\\d*|0)){0,2}?$')
+@feature('cshlib', 'cxxshlib', 'dshlib', 'fcshlib', 'vnum')
+@after_method('apply_link', 'propagate_uselib_vars')
+def apply_vnum(self):
+	"""
+	Enforce version numbering on shared libraries. The valid version numbers must have either zero or two dots::
+
+		def build(bld):
+			bld.shlib(source='a.c', target='foo', vnum='14.15.16')
+
+	In this example on Linux platform, ``libfoo.so`` is installed as ``libfoo.so.14.15.16``, and the following symbolic links are created:
+
+	* ``libfoo.so    → libfoo.so.14.15.16``
+	* ``libfoo.so.14 → libfoo.so.14.15.16``
+
+	By default, the library will be assigned SONAME ``libfoo.so.14``, effectively declaring ABI compatibility between all minor and patch releases for the major version of the library.  When necessary, the compatibility can be explicitly defined using `cnum` parameter:
+
+		def build(bld):
+			bld.shlib(source='a.c', target='foo', vnum='14.15.16', cnum='14.15')
+
+	In this case, the assigned SONAME will be ``libfoo.so.14.15`` with ABI compatibility only between path releases for a specific major and minor version of the library.
+
+	On OS X platform, install-name parameter will follow the above logic for SONAME with exception that it also specifies an absolute path (based on install_path) of the library.
+	"""
+	if not getattr(self, 'vnum', '') or os.name != 'posix' or self.env.DEST_BINFMT not in ('elf', 'mac-o'):
+		return
+
+	link = self.link_task
+	if not re_vnum.match(self.vnum):
+		raise Errors.WafError('Invalid vnum %r for target %r' % (self.vnum, getattr(self, 'name', self)))
+	nums = self.vnum.split('.')
+	node = link.outputs[0]
+
+	cnum = getattr(self, 'cnum', str(nums[0]))
+	cnums = cnum.split('.')
+	if len(cnums)>len(nums) or nums[0:len(cnums)] != cnums:
+		raise Errors.WafError('invalid compatibility version %s' % cnum)
+
+	libname = node.name
+	if libname.endswith('.dylib'):
+		name3 = libname.replace('.dylib', '.%s.dylib' % self.vnum)
+		name2 = libname.replace('.dylib', '.%s.dylib' % cnum)
+	else:
+		name3 = libname + '.' + self.vnum
+		name2 = libname + '.' + cnum
+
+	# add the so name for the ld linker - to disable, just unset env.SONAME_ST
+	if self.env.SONAME_ST:
+		v = self.env.SONAME_ST % name2
+		self.env.append_value('LINKFLAGS', v.split())
+
+	# the following task is just to enable execution from the build dir :-/
+	if self.env.DEST_OS != 'openbsd':
+		outs = [node.parent.make_node(name3)]
+		if name2 != name3:
+			outs.append(node.parent.make_node(name2))
+		self.create_task('vnum', node, outs)
+
+	if getattr(self, 'install_task', None):
+		self.install_task.hasrun = Task.SKIPPED
+		self.install_task.no_errcheck_out = True
+		path = self.install_task.install_to
+		if self.env.DEST_OS == 'openbsd':
+			libname = self.link_task.outputs[0].name
+			t1 = self.add_install_as(install_to='%s/%s' % (path, libname), install_from=node, chmod=self.link_task.chmod)
+			self.vnum_install_task = (t1,)
+		else:
+			t1 = self.add_install_as(install_to=path + os.sep + name3, install_from=node, chmod=self.link_task.chmod)
+			t3 = self.add_symlink_as(install_to=path + os.sep + libname, install_from=name3)
+			if name2 != name3:
+				t2 = self.add_symlink_as(install_to=path + os.sep + name2, install_from=name3)
+				self.vnum_install_task = (t1, t2, t3)
+			else:
+				self.vnum_install_task = (t1, t3)
+
+	if '-dynamiclib' in self.env.LINKFLAGS:
+		# this requires after(propagate_uselib_vars)
+		try:
+			inst_to = self.install_path
+		except AttributeError:
+			inst_to = self.link_task.inst_to
+		if inst_to:
+			p = Utils.subst_vars(inst_to, self.env)
+			path = os.path.join(p, name2)
+			self.env.append_value('LINKFLAGS', ['-install_name', path])
+			self.env.append_value('LINKFLAGS', '-Wl,-compatibility_version,%s' % cnum)
+			self.env.append_value('LINKFLAGS', '-Wl,-current_version,%s' % self.vnum)
+
+class vnum(Task.Task):
+	"""
+	Create the symbolic links for a versioned shared library. Instances are created by :py:func:`waflib.Tools.ccroot.apply_vnum`
+	"""
+	color = 'CYAN'
+	ext_in = ['.bin']
+	def keyword(self):
+		return 'Symlinking'
+	def run(self):
+		for x in self.outputs:
+			path = x.abspath()
+			try:
+				os.remove(path)
+			except OSError:
+				pass
+
+			try:
+				os.symlink(self.inputs[0].name, path)
+			except OSError:
+				return 1
+
+class fake_shlib(link_task):
+	"""
+	Task used for reading a system library and adding the dependency on it
+	"""
+	def runnable_status(self):
+		for t in self.run_after:
+			if not t.hasrun:
+				return Task.ASK_LATER
+		return Task.SKIP_ME
+
+class fake_stlib(stlink_task):
+	"""
+	Task used for reading a system library and adding the dependency on it
+	"""
+	def runnable_status(self):
+		for t in self.run_after:
+			if not t.hasrun:
+				return Task.ASK_LATER
+		return Task.SKIP_ME
+
+@conf
+def read_shlib(self, name, paths=[], export_includes=[], export_defines=[]):
+	"""
+	Read a system shared library, enabling its use as a local library. Will trigger a rebuild if the file changes::
+
+		def build(bld):
+			bld.read_shlib('m')
+			bld.program(source='main.c', use='m')
+	"""
+	return self(name=name, features='fake_lib', lib_paths=paths, lib_type='shlib', export_includes=export_includes, export_defines=export_defines)
+
+@conf
+def read_stlib(self, name, paths=[], export_includes=[], export_defines=[]):
+	"""
+	Read a system static library, enabling a use as a local library. Will trigger a rebuild if the file changes.
+	"""
+	return self(name=name, features='fake_lib', lib_paths=paths, lib_type='stlib', export_includes=export_includes, export_defines=export_defines)
+
+lib_patterns = {
+	'shlib' : ['lib%s.so', '%s.so', 'lib%s.dylib', 'lib%s.dll', '%s.dll'],
+	'stlib' : ['lib%s.a', '%s.a', 'lib%s.dll', '%s.dll', 'lib%s.lib', '%s.lib'],
+}
+
+@feature('fake_lib')
+def process_lib(self):
+	"""
+	Find the location of a foreign library. Used by :py:class:`waflib.Tools.ccroot.read_shlib` and :py:class:`waflib.Tools.ccroot.read_stlib`.
+	"""
+	node = None
+
+	names = [x % self.name for x in lib_patterns[self.lib_type]]
+	for x in self.lib_paths + [self.path] + SYSTEM_LIB_PATHS:
+		if not isinstance(x, Node.Node):
+			x = self.bld.root.find_node(x) or self.path.find_node(x)
+			if not x:
+				continue
+
+		for y in names:
+			node = x.find_node(y)
+			if node:
+				try:
+					Utils.h_file(node.abspath())
+				except EnvironmentError:
+					raise ValueError('Could not read %r' % y)
+				break
+		else:
+			continue
+		break
+	else:
+		raise Errors.WafError('could not find library %r' % self.name)
+	self.link_task = self.create_task('fake_%s' % self.lib_type, [], [node])
+	self.target = self.name
+
+
+class fake_o(Task.Task):
+	def runnable_status(self):
+		return Task.SKIP_ME
+
+@extension('.o', '.obj')
+def add_those_o_files(self, node):
+	tsk = self.create_task('fake_o', [], node)
+	try:
+		self.compiled_tasks.append(tsk)
+	except AttributeError:
+		self.compiled_tasks = [tsk]
+
+@feature('fake_obj')
+@before_method('process_source')
+def process_objs(self):
+	"""
+	Puts object files in the task generator outputs
+	"""
+	for node in self.to_nodes(self.source):
+		self.add_those_o_files(node)
+	self.source = []
+
+@conf
+def read_object(self, obj):
+	"""
+	Read an object file, enabling injection in libs/programs. Will trigger a rebuild if the file changes.
+
+	:param obj: object file path, as string or Node
+	"""
+	if not isinstance(obj, self.path.__class__):
+		obj = self.path.find_resource(obj)
+	return self(features='fake_obj', source=obj, name=obj.name)
+
+@feature('cxxprogram', 'cprogram')
+@after_method('apply_link', 'process_use')
+def set_full_paths_hpux(self):
+	"""
+	On hp-ux, extend the libpaths and static library paths to absolute paths
+	"""
+	if self.env.DEST_OS != 'hp-ux':
+		return
+	base = self.bld.bldnode.abspath()
+	for var in ['LIBPATH', 'STLIBPATH']:
+		lst = []
+		for x in self.env[var]:
+			if x.startswith('/'):
+				lst.append(x)
+			else:
+				lst.append(os.path.normpath(os.path.join(base, x)))
+		self.env[var] = lst
+
diff --git a/Tools/clang.py b/Tools/clang.py
new file mode 100644
index 0000000..3828e39
--- /dev/null
+++ b/Tools/clang.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Krzysztof Kosiński 2014
+
+"""
+Detect the Clang C compiler
+"""
+
+from waflib.Tools import ccroot, ar, gcc
+from waflib.Configure import conf
+
+@conf
+def find_clang(conf):
+	"""
+	Finds the program clang and executes it to ensure it really is clang
+	"""
+	cc = conf.find_program('clang', var='CC')
+	conf.get_cc_version(cc, clang=True)
+	conf.env.CC_NAME = 'clang'
+
+def configure(conf):
+	conf.find_clang()
+	conf.find_program(['llvm-ar', 'ar'], var='AR')
+	conf.find_ar()
+	conf.gcc_common_flags()
+	conf.gcc_modifier_platform()
+	conf.cc_load_tools()
+	conf.cc_add_flags()
+	conf.link_add_flags()
diff --git a/Tools/clangxx.py b/Tools/clangxx.py
new file mode 100644
index 0000000..152013c
--- /dev/null
+++ b/Tools/clangxx.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy 2009-2018 (ita)
+
+"""
+Detect the Clang++ C++ compiler
+"""
+
+from waflib.Tools import ccroot, ar, gxx
+from waflib.Configure import conf
+
+@conf
+def find_clangxx(conf):
+	"""
+	Finds the program clang++, and executes it to ensure it really is clang++
+	"""
+	cxx = conf.find_program('clang++', var='CXX')
+	conf.get_cc_version(cxx, clang=True)
+	conf.env.CXX_NAME = 'clang'
+
+def configure(conf):
+	conf.find_clangxx()
+	conf.find_program(['llvm-ar', 'ar'], var='AR')
+	conf.find_ar()
+	conf.gxx_common_flags()
+	conf.gxx_modifier_platform()
+	conf.cxx_load_tools()
+	conf.cxx_add_flags()
+	conf.link_add_flags()
+
diff --git a/Tools/compiler_c.py b/Tools/compiler_c.py
new file mode 100644
index 0000000..2dba3f8
--- /dev/null
+++ b/Tools/compiler_c.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Matthias Jahn jahn dôt matthias ât freenet dôt de, 2007 (pmarat)
+
+"""
+Try to detect a C compiler from the list of supported compilers (gcc, msvc, etc)::
+
+	def options(opt):
+		opt.load('compiler_c')
+	def configure(cnf):
+		cnf.load('compiler_c')
+	def build(bld):
+		bld.program(source='main.c', target='app')
+
+The compilers are associated to platforms in :py:attr:`waflib.Tools.compiler_c.c_compiler`. To register
+a new C compiler named *cfoo* (assuming the tool ``waflib/extras/cfoo.py`` exists), use::
+
+	from waflib.Tools.compiler_c import c_compiler
+	c_compiler['win32'] = ['cfoo', 'msvc', 'gcc']
+
+	def options(opt):
+		opt.load('compiler_c')
+	def configure(cnf):
+		cnf.load('compiler_c')
+	def build(bld):
+		bld.program(source='main.c', target='app')
+
+Not all compilers need to have a specific tool. For example, the clang compilers can be detected by the gcc tools when using::
+
+	$ CC=clang waf configure
+"""
+
+import re
+from waflib.Tools import ccroot
+from waflib import Utils
+from waflib.Logs import debug
+
+c_compiler = {
+'win32':  ['msvc', 'gcc', 'clang'],
+'cygwin': ['gcc'],
+'darwin': ['clang', 'gcc'],
+'aix':    ['xlc', 'gcc', 'clang'],
+'linux':  ['gcc', 'clang', 'icc'],
+'sunos':  ['suncc', 'gcc'],
+'irix':   ['gcc', 'irixcc'],
+'hpux':   ['gcc'],
+'osf1V':  ['gcc'],
+'gnu':    ['gcc', 'clang'],
+'java':   ['gcc', 'msvc', 'clang', 'icc'],
+'default':['clang', 'gcc'],
+}
+"""
+Dict mapping platform names to Waf tools finding specific C compilers::
+
+	from waflib.Tools.compiler_c import c_compiler
+	c_compiler['linux'] = ['gcc', 'icc', 'suncc']
+"""
+
+def default_compilers():
+	build_platform = Utils.unversioned_sys_platform()
+	possible_compiler_list = c_compiler.get(build_platform, c_compiler['default'])
+	return ' '.join(possible_compiler_list)
+
+def configure(conf):
+	"""
+	Detects a suitable C compiler
+
+	:raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found
+	"""
+	try:
+		test_for_compiler = conf.options.check_c_compiler or default_compilers()
+	except AttributeError:
+		conf.fatal("Add options(opt): opt.load('compiler_c')")
+
+	for compiler in re.split('[ ,]+', test_for_compiler):
+		conf.env.stash()
+		conf.start_msg('Checking for %r (C compiler)' % compiler)
+		try:
+			conf.load(compiler)
+		except conf.errors.ConfigurationError as e:
+			conf.env.revert()
+			conf.end_msg(False)
+			debug('compiler_c: %r', e)
+		else:
+			if conf.env.CC:
+				conf.end_msg(conf.env.get_flat('CC'))
+				conf.env.COMPILER_CC = compiler
+				conf.env.commit()
+				break
+			conf.env.revert()
+			conf.end_msg(False)
+	else:
+		conf.fatal('could not configure a C compiler!')
+
+def options(opt):
+	"""
+	This is how to provide compiler preferences on the command-line::
+
+		$ waf configure --check-c-compiler=gcc
+	"""
+	test_for_compiler = default_compilers()
+	opt.load_special_tools('c_*.py', ban=['c_dumbpreproc.py'])
+	cc_compiler_opts = opt.add_option_group('Configuration options')
+	cc_compiler_opts.add_option('--check-c-compiler', default=None,
+		help='list of C compilers to try [%s]' % test_for_compiler,
+		dest="check_c_compiler")
+
+	for x in test_for_compiler.split():
+		opt.load('%s' % x)
+
diff --git a/Tools/compiler_cxx.py b/Tools/compiler_cxx.py
new file mode 100644
index 0000000..1af65a2
--- /dev/null
+++ b/Tools/compiler_cxx.py
@@ -0,0 +1,111 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Matthias Jahn jahn dôt matthias ât freenet dôt de 2007 (pmarat)
+
+"""
+Try to detect a C++ compiler from the list of supported compilers (g++, msvc, etc)::
+
+	def options(opt):
+		opt.load('compiler_cxx')
+	def configure(cnf):
+		cnf.load('compiler_cxx')
+	def build(bld):
+		bld.program(source='main.cpp', target='app')
+
+The compilers are associated to platforms in :py:attr:`waflib.Tools.compiler_cxx.cxx_compiler`. To register
+a new C++ compiler named *cfoo* (assuming the tool ``waflib/extras/cfoo.py`` exists), use::
+
+	from waflib.Tools.compiler_cxx import cxx_compiler
+	cxx_compiler['win32'] = ['cfoo', 'msvc', 'gcc']
+
+	def options(opt):
+		opt.load('compiler_cxx')
+	def configure(cnf):
+		cnf.load('compiler_cxx')
+	def build(bld):
+		bld.program(source='main.c', target='app')
+
+Not all compilers need to have a specific tool. For example, the clang compilers can be detected by the gcc tools when using::
+
+	$ CXX=clang waf configure
+"""
+
+
+import re
+from waflib.Tools import ccroot
+from waflib import Utils
+from waflib.Logs import debug
+
+cxx_compiler = {
+'win32':  ['msvc', 'g++', 'clang++'],
+'cygwin': ['g++'],
+'darwin': ['clang++', 'g++'],
+'aix':    ['xlc++', 'g++', 'clang++'],
+'linux':  ['g++', 'clang++', 'icpc'],
+'sunos':  ['sunc++', 'g++'],
+'irix':   ['g++'],
+'hpux':   ['g++'],
+'osf1V':  ['g++'],
+'gnu':    ['g++', 'clang++'],
+'java':   ['g++', 'msvc', 'clang++', 'icpc'],
+'default': ['clang++', 'g++']
+}
+"""
+Dict mapping the platform names to Waf tools finding specific C++ compilers::
+
+	from waflib.Tools.compiler_cxx import cxx_compiler
+	cxx_compiler['linux'] = ['gxx', 'icpc', 'suncxx']
+"""
+
+def default_compilers():
+	build_platform = Utils.unversioned_sys_platform()
+	possible_compiler_list = cxx_compiler.get(build_platform, cxx_compiler['default'])
+	return ' '.join(possible_compiler_list)
+
+def configure(conf):
+	"""
+	Detects a suitable C++ compiler
+
+	:raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found
+	"""
+	try:
+		test_for_compiler = conf.options.check_cxx_compiler or default_compilers()
+	except AttributeError:
+		conf.fatal("Add options(opt): opt.load('compiler_cxx')")
+
+	for compiler in re.split('[ ,]+', test_for_compiler):
+		conf.env.stash()
+		conf.start_msg('Checking for %r (C++ compiler)' % compiler)
+		try:
+			conf.load(compiler)
+		except conf.errors.ConfigurationError as e:
+			conf.env.revert()
+			conf.end_msg(False)
+			debug('compiler_cxx: %r', e)
+		else:
+			if conf.env.CXX:
+				conf.end_msg(conf.env.get_flat('CXX'))
+				conf.env.COMPILER_CXX = compiler
+				conf.env.commit()
+				break
+			conf.env.revert()
+			conf.end_msg(False)
+	else:
+		conf.fatal('could not configure a C++ compiler!')
+
+def options(opt):
+	"""
+	This is how to provide compiler preferences on the command-line::
+
+		$ waf configure --check-cxx-compiler=gxx
+	"""
+	test_for_compiler = default_compilers()
+	opt.load_special_tools('cxx_*.py')
+	cxx_compiler_opts = opt.add_option_group('Configuration options')
+	cxx_compiler_opts.add_option('--check-cxx-compiler', default=None,
+		help='list of C++ compilers to try [%s]' % test_for_compiler,
+		dest="check_cxx_compiler")
+
+	for x in test_for_compiler.split():
+		opt.load('%s' % x)
+
diff --git a/Tools/compiler_d.py b/Tools/compiler_d.py
new file mode 100644
index 0000000..43bb1f6
--- /dev/null
+++ b/Tools/compiler_d.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Carlos Rafael Giani, 2007 (dv)
+# Thomas Nagy, 2016-2018 (ita)
+
+"""
+Try to detect a D compiler from the list of supported compilers::
+
+	def options(opt):
+		opt.load('compiler_d')
+	def configure(cnf):
+		cnf.load('compiler_d')
+	def build(bld):
+		bld.program(source='main.d', target='app')
+
+Only three D compilers are really present at the moment:
+
+* gdc
+* dmd, the ldc compiler having a very similar command-line interface
+* ldc2
+"""
+
+import re
+from waflib import Utils, Logs
+
+d_compiler = {
+'default' : ['gdc', 'dmd', 'ldc2']
+}
+"""
+Dict mapping the platform names to lists of names of D compilers to try, in order of preference::
+
+	from waflib.Tools.compiler_d import d_compiler
+	d_compiler['default'] = ['gdc', 'dmd', 'ldc2']
+"""
+
+def default_compilers():
+	build_platform = Utils.unversioned_sys_platform()
+	possible_compiler_list = d_compiler.get(build_platform, d_compiler['default'])
+	return ' '.join(possible_compiler_list)
+
+def configure(conf):
+	"""
+	Detects a suitable D compiler
+
+	:raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found
+	"""
+	try:
+		test_for_compiler = conf.options.check_d_compiler or default_compilers()
+	except AttributeError:
+		conf.fatal("Add options(opt): opt.load('compiler_d')")
+
+	for compiler in re.split('[ ,]+', test_for_compiler):
+		conf.env.stash()
+		conf.start_msg('Checking for %r (D compiler)' % compiler)
+		try:
+			conf.load(compiler)
+		except conf.errors.ConfigurationError as e:
+			conf.env.revert()
+			conf.end_msg(False)
+			Logs.debug('compiler_d: %r', e)
+		else:
+			if conf.env.D:
+				conf.end_msg(conf.env.get_flat('D'))
+				conf.env.COMPILER_D = compiler
+				conf.env.commit()
+				break
+			conf.env.revert()
+			conf.end_msg(False)
+	else:
+		conf.fatal('could not configure a D compiler!')
+
+def options(opt):
+	"""
+	This is how to provide compiler preferences on the command-line::
+
+		$ waf configure --check-d-compiler=dmd
+	"""
+	test_for_compiler = default_compilers()
+	d_compiler_opts = opt.add_option_group('Configuration options')
+	d_compiler_opts.add_option('--check-d-compiler', default=None,
+		help='list of D compilers to try [%s]' % test_for_compiler, dest='check_d_compiler')
+
+	for x in test_for_compiler.split():
+		opt.load('%s' % x)
+
diff --git a/Tools/compiler_fc.py b/Tools/compiler_fc.py
new file mode 100644
index 0000000..96b58e7
--- /dev/null
+++ b/Tools/compiler_fc.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+import re
+from waflib import Utils, Logs
+from waflib.Tools import fc
+
+fc_compiler = {
+	'win32'  : ['gfortran','ifort'],
+	'darwin' : ['gfortran', 'g95', 'ifort'],
+	'linux'  : ['gfortran', 'g95', 'ifort'],
+	'java'   : ['gfortran', 'g95', 'ifort'],
+	'default': ['gfortran'],
+	'aix'    : ['gfortran']
+}
+"""
+Dict mapping the platform names to lists of names of Fortran compilers to try, in order of preference::
+
+	from waflib.Tools.compiler_c import c_compiler
+	c_compiler['linux'] = ['gfortran', 'g95', 'ifort']
+"""
+
+def default_compilers():
+	build_platform = Utils.unversioned_sys_platform()
+	possible_compiler_list = fc_compiler.get(build_platform, fc_compiler['default'])
+	return ' '.join(possible_compiler_list)
+
+def configure(conf):
+	"""
+	Detects a suitable Fortran compiler
+
+	:raises: :py:class:`waflib.Errors.ConfigurationError` when no suitable compiler is found
+	"""
+	try:
+		test_for_compiler = conf.options.check_fortran_compiler or default_compilers()
+	except AttributeError:
+		conf.fatal("Add options(opt): opt.load('compiler_fc')")
+	for compiler in re.split('[ ,]+', test_for_compiler):
+		conf.env.stash()
+		conf.start_msg('Checking for %r (Fortran compiler)' % compiler)
+		try:
+			conf.load(compiler)
+		except conf.errors.ConfigurationError as e:
+			conf.env.revert()
+			conf.end_msg(False)
+			Logs.debug('compiler_fortran: %r', e)
+		else:
+			if conf.env.FC:
+				conf.end_msg(conf.env.get_flat('FC'))
+				conf.env.COMPILER_FORTRAN = compiler
+				conf.env.commit()
+				break
+			conf.env.revert()
+			conf.end_msg(False)
+	else:
+		conf.fatal('could not configure a Fortran compiler!')
+
+def options(opt):
+	"""
+	This is how to provide compiler preferences on the command-line::
+
+		$ waf configure --check-fortran-compiler=ifort
+	"""
+	test_for_compiler = default_compilers()
+	opt.load_special_tools('fc_*.py')
+	fortran_compiler_opts = opt.add_option_group('Configuration options')
+	fortran_compiler_opts.add_option('--check-fortran-compiler', default=None,
+			help='list of Fortran compiler to try [%s]' % test_for_compiler,
+		dest="check_fortran_compiler")
+
+	for x in test_for_compiler.split():
+		opt.load('%s' % x)
+
diff --git a/Tools/cs.py b/Tools/cs.py
new file mode 100644
index 0000000..aecca6d
--- /dev/null
+++ b/Tools/cs.py
@@ -0,0 +1,211 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+C# support. A simple example::
+
+	def configure(conf):
+		conf.load('cs')
+	def build(bld):
+		bld(features='cs', source='main.cs', gen='foo')
+
+Note that the configuration may compile C# snippets::
+
+	FRAG = '''
+	namespace Moo {
+		public class Test { public static int Main(string[] args) { return 0; } }
+	}'''
+	def configure(conf):
+		conf.check(features='cs', fragment=FRAG, compile_filename='test.cs', gen='test.exe',
+			bintype='exe', csflags=['-pkg:gtk-sharp-2.0'], msg='Checking for Gtksharp support')
+"""
+
+from waflib import Utils, Task, Options, Errors
+from waflib.TaskGen import before_method, after_method, feature
+from waflib.Tools import ccroot
+from waflib.Configure import conf
+
+ccroot.USELIB_VARS['cs'] = set(['CSFLAGS', 'ASSEMBLIES', 'RESOURCES'])
+ccroot.lib_patterns['csshlib'] = ['%s']
+
+@feature('cs')
+@before_method('process_source')
+def apply_cs(self):
+	"""
+	Create a C# task bound to the attribute *cs_task*. There can be only one C# task by task generator.
+	"""
+	cs_nodes = []
+	no_nodes = []
+	for x in self.to_nodes(self.source):
+		if x.name.endswith('.cs'):
+			cs_nodes.append(x)
+		else:
+			no_nodes.append(x)
+	self.source = no_nodes
+
+	bintype = getattr(self, 'bintype', self.gen.endswith('.dll') and 'library' or 'exe')
+	self.cs_task = tsk = self.create_task('mcs', cs_nodes, self.path.find_or_declare(self.gen))
+	tsk.env.CSTYPE = '/target:%s' % bintype
+	tsk.env.OUT = '/out:%s' % tsk.outputs[0].abspath()
+	self.env.append_value('CSFLAGS', '/platform:%s' % getattr(self, 'platform', 'anycpu'))
+
+	inst_to = getattr(self, 'install_path', bintype=='exe' and '${BINDIR}' or '${LIBDIR}')
+	if inst_to:
+		# note: we are making a copy, so the files added to cs_task.outputs won't be installed automatically
+		mod = getattr(self, 'chmod', bintype=='exe' and Utils.O755 or Utils.O644)
+		self.install_task = self.add_install_files(install_to=inst_to, install_from=self.cs_task.outputs[:], chmod=mod)
+
+@feature('cs')
+@after_method('apply_cs')
+def use_cs(self):
+	"""
+	C# applications honor the **use** keyword::
+
+		def build(bld):
+			bld(features='cs', source='My.cs', bintype='library', gen='my.dll', name='mylib')
+			bld(features='cs', source='Hi.cs', includes='.', bintype='exe', gen='hi.exe', use='mylib', name='hi')
+	"""
+	names = self.to_list(getattr(self, 'use', []))
+	get = self.bld.get_tgen_by_name
+	for x in names:
+		try:
+			y = get(x)
+		except Errors.WafError:
+			self.env.append_value('CSFLAGS', '/reference:%s' % x)
+			continue
+		y.post()
+
+		tsk = getattr(y, 'cs_task', None) or getattr(y, 'link_task', None)
+		if not tsk:
+			self.bld.fatal('cs task has no link task for use %r' % self)
+		self.cs_task.dep_nodes.extend(tsk.outputs) # dependency
+		self.cs_task.set_run_after(tsk) # order (redundant, the order is inferred from the nodes inputs/outputs)
+		self.env.append_value('CSFLAGS', '/reference:%s' % tsk.outputs[0].abspath())
+
+@feature('cs')
+@after_method('apply_cs', 'use_cs')
+def debug_cs(self):
+	"""
+	The C# targets may create .mdb or .pdb files::
+
+		def build(bld):
+			bld(features='cs', source='My.cs', bintype='library', gen='my.dll', csdebug='full')
+			# csdebug is a value in (True, 'full', 'pdbonly')
+	"""
+	csdebug = getattr(self, 'csdebug', self.env.CSDEBUG)
+	if not csdebug:
+		return
+
+	node = self.cs_task.outputs[0]
+	if self.env.CS_NAME == 'mono':
+		out = node.parent.find_or_declare(node.name + '.mdb')
+	else:
+		out = node.change_ext('.pdb')
+	self.cs_task.outputs.append(out)
+
+	if getattr(self, 'install_task', None):
+		self.pdb_install_task = self.add_install_files(
+			install_to=self.install_task.install_to, install_from=out)
+
+	if csdebug == 'pdbonly':
+		val = ['/debug+', '/debug:pdbonly']
+	elif csdebug == 'full':
+		val = ['/debug+', '/debug:full']
+	else:
+		val = ['/debug-']
+	self.env.append_value('CSFLAGS', val)
+
+@feature('cs')
+@after_method('debug_cs')
+def doc_cs(self):
+	"""
+	The C# targets may create .xml documentation files::
+
+		def build(bld):
+			bld(features='cs', source='My.cs', bintype='library', gen='my.dll', csdoc=True)
+			# csdoc is a boolean value
+	"""
+	csdoc = getattr(self, 'csdoc', self.env.CSDOC)
+	if not csdoc:
+		return
+
+	node = self.cs_task.outputs[0]
+	out = node.change_ext('.xml')
+	self.cs_task.outputs.append(out)
+
+	if getattr(self, 'install_task', None):
+		self.doc_install_task = self.add_install_files(
+			install_to=self.install_task.install_to, install_from=out)
+
+	self.env.append_value('CSFLAGS', '/doc:%s' % out.abspath())
+
+class mcs(Task.Task):
+	"""
+	Compile C# files
+	"""
+	color   = 'YELLOW'
+	run_str = '${MCS} ${CSTYPE} ${CSFLAGS} ${ASS_ST:ASSEMBLIES} ${RES_ST:RESOURCES} ${OUT} ${SRC}'
+
+	def split_argfile(self, cmd):
+		inline = [cmd[0]]
+		infile = []
+		for x in cmd[1:]:
+			# csc doesn't want /noconfig in @file
+			if x.lower() == '/noconfig':
+				inline.append(x)
+			else:
+				infile.append(self.quote_flag(x))
+		return (inline, infile)
+
+def configure(conf):
+	"""
+	Find a C# compiler, set the variable MCS for the compiler and CS_NAME (mono or csc)
+	"""
+	csc = getattr(Options.options, 'cscbinary', None)
+	if csc:
+		conf.env.MCS = csc
+	conf.find_program(['csc', 'mcs', 'gmcs'], var='MCS')
+	conf.env.ASS_ST = '/r:%s'
+	conf.env.RES_ST = '/resource:%s'
+
+	conf.env.CS_NAME = 'csc'
+	if str(conf.env.MCS).lower().find('mcs') > -1:
+		conf.env.CS_NAME = 'mono'
+
+def options(opt):
+	"""
+	Add a command-line option for the configuration::
+
+		$ waf configure --with-csc-binary=/foo/bar/mcs
+	"""
+	opt.add_option('--with-csc-binary', type='string', dest='cscbinary')
+
+class fake_csshlib(Task.Task):
+	"""
+	Task used for reading a foreign .net assembly and adding the dependency on it
+	"""
+	color   = 'YELLOW'
+	inst_to = None
+
+	def runnable_status(self):
+		return Task.SKIP_ME
+
+@conf
+def read_csshlib(self, name, paths=[]):
+	"""
+	Read a foreign .net assembly for the *use* system::
+
+		def build(bld):
+			bld.read_csshlib('ManagedLibrary.dll', paths=[bld.env.mylibrarypath])
+			bld(features='cs', source='Hi.cs', bintype='exe', gen='hi.exe', use='ManagedLibrary.dll')
+
+	:param name: Name of the library
+	:type name: string
+	:param paths: Folders in which the library may be found
+	:type paths: list of string
+	:return: A task generator having the feature *fake_lib* which will call :py:func:`waflib.Tools.ccroot.process_lib`
+	:rtype: :py:class:`waflib.TaskGen.task_gen`
+	"""
+	return self(name=name, features='fake_lib', lib_paths=paths, lib_type='csshlib')
+
diff --git a/Tools/cxx.py b/Tools/cxx.py
new file mode 100644
index 0000000..194fad7
--- /dev/null
+++ b/Tools/cxx.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2018 (ita)
+
+"Base for c++ programs and libraries"
+
+from waflib import TaskGen, Task
+from waflib.Tools import c_preproc
+from waflib.Tools.ccroot import link_task, stlink_task
+
+@TaskGen.extension('.cpp','.cc','.cxx','.C','.c++')
+def cxx_hook(self, node):
+	"Binds c++ file extensions to create :py:class:`waflib.Tools.cxx.cxx` instances"
+	return self.create_compiled_task('cxx', node)
+
+if not '.c' in TaskGen.task_gen.mappings:
+	TaskGen.task_gen.mappings['.c'] = TaskGen.task_gen.mappings['.cpp']
+
+class cxx(Task.Task):
+	"Compiles C++ files into object files"
+	run_str = '${CXX} ${ARCH_ST:ARCH} ${CXXFLAGS} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${CPPPATH_ST:INCPATHS} ${DEFINES_ST:DEFINES} ${CXX_SRC_F}${SRC} ${CXX_TGT_F}${TGT[0].abspath()} ${CPPFLAGS}'
+	vars    = ['CXXDEPS'] # unused variable to depend on, just in case
+	ext_in  = ['.h'] # set the build order easily by using ext_out=['.h']
+	scan    = c_preproc.scan
+
+class cxxprogram(link_task):
+	"Links object files into c++ programs"
+	run_str = '${LINK_CXX} ${LINKFLAGS} ${CXXLNK_SRC_F}${SRC} ${CXXLNK_TGT_F}${TGT[0].abspath()} ${RPATH_ST:RPATH} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${FRAMEWORK_ST:FRAMEWORK} ${ARCH_ST:ARCH} ${STLIB_MARKER} ${STLIBPATH_ST:STLIBPATH} ${STLIB_ST:STLIB} ${SHLIB_MARKER} ${LIBPATH_ST:LIBPATH} ${LIB_ST:LIB} ${LDFLAGS}'
+	vars    = ['LINKDEPS']
+	ext_out = ['.bin']
+	inst_to = '${BINDIR}'
+
+class cxxshlib(cxxprogram):
+	"Links object files into c++ shared libraries"
+	inst_to = '${LIBDIR}'
+
+class cxxstlib(stlink_task):
+	"Links object files into c++ static libraries"
+	pass # do not remove
+
diff --git a/Tools/d.py b/Tools/d.py
new file mode 100644
index 0000000..e4cf73b
--- /dev/null
+++ b/Tools/d.py
@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Carlos Rafael Giani, 2007 (dv)
+# Thomas Nagy, 2007-2018 (ita)
+
+from waflib import Utils, Task, Errors
+from waflib.TaskGen import taskgen_method, feature, extension
+from waflib.Tools import d_scan, d_config
+from waflib.Tools.ccroot import link_task, stlink_task
+
+class d(Task.Task):
+	"Compile a d file into an object file"
+	color   = 'GREEN'
+	run_str = '${D} ${DFLAGS} ${DINC_ST:INCPATHS} ${D_SRC_F:SRC} ${D_TGT_F:TGT}'
+	scan    = d_scan.scan
+
+class d_with_header(d):
+	"Compile a d file and generate a header"
+	run_str = '${D} ${DFLAGS} ${DINC_ST:INCPATHS} ${D_HDR_F:tgt.outputs[1].bldpath()} ${D_SRC_F:SRC} ${D_TGT_F:tgt.outputs[0].bldpath()}'
+
+class d_header(Task.Task):
+	"Compile d headers"
+	color   = 'BLUE'
+	run_str = '${D} ${D_HEADER} ${SRC}'
+
+class dprogram(link_task):
+	"Link object files into a d program"
+	run_str = '${D_LINKER} ${LINKFLAGS} ${DLNK_SRC_F}${SRC} ${DLNK_TGT_F:TGT} ${RPATH_ST:RPATH} ${DSTLIB_MARKER} ${DSTLIBPATH_ST:STLIBPATH} ${DSTLIB_ST:STLIB} ${DSHLIB_MARKER} ${DLIBPATH_ST:LIBPATH} ${DSHLIB_ST:LIB}'
+	inst_to = '${BINDIR}'
+
+class dshlib(dprogram):
+	"Link object files into a d shared library"
+	inst_to = '${LIBDIR}'
+
+class dstlib(stlink_task):
+	"Link object files into a d static library"
+	pass # do not remove
+
+@extension('.d', '.di', '.D')
+def d_hook(self, node):
+	"""
+	Compile *D* files. To get .di files as well as .o files, set the following::
+
+		def build(bld):
+			bld.program(source='foo.d', target='app', generate_headers=True)
+
+	"""
+	ext = Utils.destos_to_binfmt(self.env.DEST_OS) == 'pe' and 'obj' or 'o'
+	out = '%s.%d.%s' % (node.name, self.idx, ext)
+	def create_compiled_task(self, name, node):
+		task = self.create_task(name, node, node.parent.find_or_declare(out))
+		try:
+			self.compiled_tasks.append(task)
+		except AttributeError:
+			self.compiled_tasks = [task]
+		return task
+
+	if getattr(self, 'generate_headers', None):
+		tsk = create_compiled_task(self, 'd_with_header', node)
+		tsk.outputs.append(node.change_ext(self.env.DHEADER_ext))
+	else:
+		tsk = create_compiled_task(self, 'd', node)
+	return tsk
+
+@taskgen_method
+def generate_header(self, filename):
+	"""
+	See feature request #104::
+
+		def build(bld):
+			tg = bld.program(source='foo.d', target='app')
+			tg.generate_header('blah.d')
+			# is equivalent to:
+			#tg = bld.program(source='foo.d', target='app', header_lst='blah.d')
+
+	:param filename: header to create
+	:type filename: string
+	"""
+	try:
+		self.header_lst.append([filename, self.install_path])
+	except AttributeError:
+		self.header_lst = [[filename, self.install_path]]
+
+@feature('d')
+def process_header(self):
+	"""
+	Process the attribute 'header_lst' to create the d header compilation tasks::
+
+		def build(bld):
+			bld.program(source='foo.d', target='app', header_lst='blah.d')
+	"""
+	for i in getattr(self, 'header_lst', []):
+		node = self.path.find_resource(i[0])
+		if not node:
+			raise Errors.WafError('file %r not found on d obj' % i[0])
+		self.create_task('d_header', node, node.change_ext('.di'))
+
diff --git a/Tools/d_config.py b/Tools/d_config.py
new file mode 100644
index 0000000..6637556
--- /dev/null
+++ b/Tools/d_config.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2016-2018 (ita)
+
+from waflib import Utils
+from waflib.Configure import conf
+
+@conf
+def d_platform_flags(self):
+	"""
+	Sets the extensions dll/so for d programs and libraries
+	"""
+	v = self.env
+	if not v.DEST_OS:
+		v.DEST_OS = Utils.unversioned_sys_platform()
+	binfmt = Utils.destos_to_binfmt(self.env.DEST_OS)
+	if binfmt == 'pe':
+		v.dprogram_PATTERN = '%s.exe'
+		v.dshlib_PATTERN   = 'lib%s.dll'
+		v.dstlib_PATTERN   = 'lib%s.a'
+	elif binfmt == 'mac-o':
+		v.dprogram_PATTERN = '%s'
+		v.dshlib_PATTERN   = 'lib%s.dylib'
+		v.dstlib_PATTERN   = 'lib%s.a'
+	else:
+		v.dprogram_PATTERN = '%s'
+		v.dshlib_PATTERN   = 'lib%s.so'
+		v.dstlib_PATTERN   = 'lib%s.a'
+
+DLIB = '''
+version(D_Version2) {
+	import std.stdio;
+	int main() {
+		writefln("phobos2");
+		return 0;
+	}
+} else {
+	version(Tango) {
+		import tango.stdc.stdio;
+		int main() {
+			printf("tango");
+			return 0;
+		}
+	} else {
+		import std.stdio;
+		int main() {
+			writefln("phobos1");
+			return 0;
+		}
+	}
+}
+'''
+"""Detection string for the D standard library"""
+
+@conf
+def check_dlibrary(self, execute=True):
+	"""
+	Detects the kind of standard library that comes with the compiler,
+	and sets conf.env.DLIBRARY to tango, phobos1 or phobos2
+	"""
+	ret = self.check_cc(features='d dprogram', fragment=DLIB, compile_filename='test.d', execute=execute, define_ret=True)
+	if execute:
+		self.env.DLIBRARY = ret.strip()
+
diff --git a/Tools/d_scan.py b/Tools/d_scan.py
new file mode 100644
index 0000000..14c6c31
--- /dev/null
+++ b/Tools/d_scan.py
@@ -0,0 +1,211 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2016-2018 (ita)
+
+"""
+Provide a scanner for finding dependencies on d files
+"""
+
+import re
+from waflib import Utils
+
+def filter_comments(filename):
+	"""
+	:param filename: d file name
+	:type filename: string
+	:rtype: list
+	:return: a list of characters
+	"""
+	txt = Utils.readf(filename)
+	i = 0
+	buf = []
+	max = len(txt)
+	begin = 0
+	while i < max:
+		c = txt[i]
+		if c == '"' or c == "'":  # skip a string or character literal
+			buf.append(txt[begin:i])
+			delim = c
+			i += 1
+			while i < max:
+				c = txt[i]
+				if c == delim:
+					break
+				elif c == '\\':  # skip the character following backslash
+					i += 1
+				i += 1
+			i += 1
+			begin = i
+		elif c == '/':  # try to replace a comment with whitespace
+			buf.append(txt[begin:i])
+			i += 1
+			if i == max:
+				break
+			c = txt[i]
+			if c == '+':  # eat nesting /+ +/ comment
+				i += 1
+				nesting = 1
+				c = None
+				while i < max:
+					prev = c
+					c = txt[i]
+					if prev == '/' and c == '+':
+						nesting += 1
+						c = None
+					elif prev == '+' and c == '/':
+						nesting -= 1
+						if nesting == 0:
+							break
+						c = None
+					i += 1
+			elif c == '*':  # eat /* */ comment
+				i += 1
+				c = None
+				while i < max:
+					prev = c
+					c = txt[i]
+					if prev == '*' and c == '/':
+						break
+					i += 1
+			elif c == '/':  # eat // comment
+				i += 1
+				while i < max and txt[i] != '\n':
+					i += 1
+			else:  # no comment
+				begin = i - 1
+				continue
+			i += 1
+			begin = i
+			buf.append(' ')
+		else:
+			i += 1
+	buf.append(txt[begin:])
+	return buf
+
+class d_parser(object):
+	"""
+	Parser for d files
+	"""
+	def __init__(self, env, incpaths):
+		#self.code = ''
+		#self.module = ''
+		#self.imports = []
+
+		self.allnames = []
+
+		self.re_module = re.compile("module\s+([^;]+)")
+		self.re_import = re.compile("import\s+([^;]+)")
+		self.re_import_bindings = re.compile("([^:]+):(.*)")
+		self.re_import_alias = re.compile("[^=]+=(.+)")
+
+		self.env = env
+
+		self.nodes = []
+		self.names = []
+
+		self.incpaths = incpaths
+
+	def tryfind(self, filename):
+		"""
+		Search file a file matching an module/import directive
+
+		:param filename: file to read
+		:type filename: string
+		"""
+		found = 0
+		for n in self.incpaths:
+			found = n.find_resource(filename.replace('.', '/') + '.d')
+			if found:
+				self.nodes.append(found)
+				self.waiting.append(found)
+				break
+		if not found:
+			if not filename in self.names:
+				self.names.append(filename)
+
+	def get_strings(self, code):
+		"""
+		:param code: d code to parse
+		:type code: string
+		:return: the modules that the code uses
+		:rtype: a list of match objects
+		"""
+		#self.imports = []
+		self.module = ''
+		lst = []
+
+		# get the module name (if present)
+
+		mod_name = self.re_module.search(code)
+		if mod_name:
+			self.module = re.sub('\s+', '', mod_name.group(1)) # strip all whitespaces
+
+		# go through the code, have a look at all import occurrences
+
+		# first, lets look at anything beginning with "import" and ending with ";"
+		import_iterator = self.re_import.finditer(code)
+		if import_iterator:
+			for import_match in import_iterator:
+				import_match_str = re.sub('\s+', '', import_match.group(1)) # strip all whitespaces
+
+				# does this end with an import bindings declaration?
+				# (import bindings always terminate the list of imports)
+				bindings_match = self.re_import_bindings.match(import_match_str)
+				if bindings_match:
+					import_match_str = bindings_match.group(1)
+					# if so, extract the part before the ":" (since the module declaration(s) is/are located there)
+
+				# split the matching string into a bunch of strings, separated by a comma
+				matches = import_match_str.split(',')
+
+				for match in matches:
+					alias_match = self.re_import_alias.match(match)
+					if alias_match:
+						# is this an alias declaration? (alias = module name) if so, extract the module name
+						match = alias_match.group(1)
+
+					lst.append(match)
+		return lst
+
+	def start(self, node):
+		"""
+		The parsing starts here
+
+		:param node: input file
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+		self.waiting = [node]
+		# while the stack is not empty, add the dependencies
+		while self.waiting:
+			nd = self.waiting.pop(0)
+			self.iter(nd)
+
+	def iter(self, node):
+		"""
+		Find all the modules that a file depends on, uses :py:meth:`waflib.Tools.d_scan.d_parser.tryfind` to process dependent files
+
+		:param node: input file
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+		path = node.abspath() # obtain the absolute path
+		code = "".join(filter_comments(path)) # read the file and filter the comments
+		names = self.get_strings(code) # obtain the import strings
+		for x in names:
+			# optimization
+			if x in self.allnames:
+				continue
+			self.allnames.append(x)
+
+			# for each name, see if it is like a node or not
+			self.tryfind(x)
+
+def scan(self):
+	"look for .d/.di used by a d file"
+	env = self.env
+	gruik = d_parser(env, self.generator.includes_nodes)
+	node = self.inputs[0]
+	gruik.start(node)
+	nodes = gruik.nodes
+	names = gruik.names
+	return (nodes, names)
+
diff --git a/Tools/dbus.py b/Tools/dbus.py
new file mode 100644
index 0000000..d520f1c
--- /dev/null
+++ b/Tools/dbus.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Ali Sabil, 2007
+
+"""
+Compiles dbus files with **dbus-binding-tool**
+
+Typical usage::
+
+	def options(opt):
+		opt.load('compiler_c dbus')
+	def configure(conf):
+		conf.load('compiler_c dbus')
+	def build(bld):
+		tg = bld.program(
+			includes = '.',
+			source = bld.path.ant_glob('*.c'),
+			target = 'gnome-hello')
+		tg.add_dbus_file('test.xml', 'test_prefix', 'glib-server')
+"""
+
+from waflib import Task, Errors
+from waflib.TaskGen import taskgen_method, before_method
+
+@taskgen_method
+def add_dbus_file(self, filename, prefix, mode):
+	"""
+	Adds a dbus file to the list of dbus files to process. Store them in the attribute *dbus_lst*.
+
+	:param filename: xml file to compile
+	:type filename: string
+	:param prefix: dbus binding tool prefix (--prefix=prefix)
+	:type prefix: string
+	:param mode: dbus binding tool mode (--mode=mode)
+	:type mode: string
+	"""
+	if not hasattr(self, 'dbus_lst'):
+		self.dbus_lst = []
+	if not 'process_dbus' in self.meths:
+		self.meths.append('process_dbus')
+	self.dbus_lst.append([filename, prefix, mode])
+
+@before_method('process_source')
+def process_dbus(self):
+	"""
+	Processes the dbus files stored in the attribute *dbus_lst* to create :py:class:`waflib.Tools.dbus.dbus_binding_tool` instances.
+	"""
+	for filename, prefix, mode in getattr(self, 'dbus_lst', []):
+		node = self.path.find_resource(filename)
+		if not node:
+			raise Errors.WafError('file not found ' + filename)
+		tsk = self.create_task('dbus_binding_tool', node, node.change_ext('.h'))
+		tsk.env.DBUS_BINDING_TOOL_PREFIX = prefix
+		tsk.env.DBUS_BINDING_TOOL_MODE   = mode
+
+class dbus_binding_tool(Task.Task):
+	"""
+	Compiles a dbus file
+	"""
+	color   = 'BLUE'
+	ext_out = ['.h']
+	run_str = '${DBUS_BINDING_TOOL} --prefix=${DBUS_BINDING_TOOL_PREFIX} --mode=${DBUS_BINDING_TOOL_MODE} --output=${TGT} ${SRC}'
+	shell   = True # temporary workaround for #795
+
+def configure(conf):
+	"""
+	Detects the program dbus-binding-tool and sets ``conf.env.DBUS_BINDING_TOOL``
+	"""
+	conf.find_program('dbus-binding-tool', var='DBUS_BINDING_TOOL')
+
diff --git a/Tools/dmd.py b/Tools/dmd.py
new file mode 100644
index 0000000..8917ca1
--- /dev/null
+++ b/Tools/dmd.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Carlos Rafael Giani, 2007 (dv)
+# Thomas Nagy, 2008-2018 (ita)
+
+import sys
+from waflib.Tools import ar, d
+from waflib.Configure import conf
+
+@conf
+def find_dmd(conf):
+	"""
+	Finds the program *dmd*, *dmd2*, or *ldc* and set the variable *D*
+	"""
+	conf.find_program(['dmd', 'dmd2', 'ldc'], var='D')
+
+	# make sure that we're dealing with dmd1, dmd2, or ldc(1)
+	out = conf.cmd_and_log(conf.env.D + ['--help'])
+	if out.find("D Compiler v") == -1:
+		out = conf.cmd_and_log(conf.env.D + ['-version'])
+		if out.find("based on DMD v1.") == -1:
+			conf.fatal("detected compiler is not dmd/ldc")
+
+@conf
+def common_flags_ldc(conf):
+	"""
+	Sets the D flags required by *ldc*
+	"""
+	v = conf.env
+	v.DFLAGS        = ['-d-version=Posix']
+	v.LINKFLAGS     = []
+	v.DFLAGS_dshlib = ['-relocation-model=pic']
+
+@conf
+def common_flags_dmd(conf):
+	"""
+	Set the flags required by *dmd* or *dmd2*
+	"""
+	v = conf.env
+
+	v.D_SRC_F           = ['-c']
+	v.D_TGT_F           = '-of%s'
+
+	v.D_LINKER          = v.D
+	v.DLNK_SRC_F        = ''
+	v.DLNK_TGT_F        = '-of%s'
+	v.DINC_ST           = '-I%s'
+
+	v.DSHLIB_MARKER = v.DSTLIB_MARKER = ''
+	v.DSTLIB_ST = v.DSHLIB_ST         = '-L-l%s'
+	v.DSTLIBPATH_ST = v.DLIBPATH_ST   = '-L-L%s'
+
+	v.LINKFLAGS_dprogram= ['-quiet']
+
+	v.DFLAGS_dshlib     = ['-fPIC']
+	v.LINKFLAGS_dshlib  = ['-L-shared']
+
+	v.DHEADER_ext       = '.di'
+	v.DFLAGS_d_with_header = ['-H', '-Hf']
+	v.D_HDR_F           = '%s'
+
+def configure(conf):
+	"""
+	Configuration for *dmd*, *dmd2*, and *ldc*
+	"""
+	conf.find_dmd()
+
+	if sys.platform == 'win32':
+		out = conf.cmd_and_log(conf.env.D + ['--help'])
+		if out.find('D Compiler v2.') > -1:
+			conf.fatal('dmd2 on Windows is not supported, use gdc or ldc2 instead')
+
+	conf.load('ar')
+	conf.load('d')
+	conf.common_flags_dmd()
+	conf.d_platform_flags()
+
+	if str(conf.env.D).find('ldc') > -1:
+		conf.common_flags_ldc()
+
diff --git a/Tools/errcheck.py b/Tools/errcheck.py
new file mode 100644
index 0000000..de8d75a
--- /dev/null
+++ b/Tools/errcheck.py
@@ -0,0 +1,237 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2011 (ita)
+
+"""
+Common mistakes highlighting.
+
+There is a performance impact, so this tool is only loaded when running ``waf -v``
+"""
+
+typos = {
+'feature':'features',
+'sources':'source',
+'targets':'target',
+'include':'includes',
+'export_include':'export_includes',
+'define':'defines',
+'importpath':'includes',
+'installpath':'install_path',
+'iscopy':'is_copy',
+'uses':'use',
+}
+
+meths_typos = ['__call__', 'program', 'shlib', 'stlib', 'objects']
+
+import sys
+from waflib import Logs, Build, Node, Task, TaskGen, ConfigSet, Errors, Utils
+from waflib.Tools import ccroot
+
+def check_same_targets(self):
+	mp = Utils.defaultdict(list)
+	uids = {}
+
+	def check_task(tsk):
+		if not isinstance(tsk, Task.Task):
+			return
+		if hasattr(tsk, 'no_errcheck_out'):
+			return
+
+		for node in tsk.outputs:
+			mp[node].append(tsk)
+		try:
+			uids[tsk.uid()].append(tsk)
+		except KeyError:
+			uids[tsk.uid()] = [tsk]
+
+	for g in self.groups:
+		for tg in g:
+			try:
+				for tsk in tg.tasks:
+					check_task(tsk)
+			except AttributeError:
+				# raised if not a task generator, which should be uncommon
+				check_task(tg)
+
+	dupe = False
+	for (k, v) in mp.items():
+		if len(v) > 1:
+			dupe = True
+			msg = '* Node %r is created more than once%s. The task generators are:' % (k, Logs.verbose == 1 and " (full message on 'waf -v -v')" or "")
+			Logs.error(msg)
+			for x in v:
+				if Logs.verbose > 1:
+					Logs.error('  %d. %r', 1 + v.index(x), x.generator)
+				else:
+					Logs.error('  %d. %r in %r', 1 + v.index(x), x.generator.name, getattr(x.generator, 'path', None))
+			Logs.error('If you think that this is an error, set no_errcheck_out on the task instance')
+
+	if not dupe:
+		for (k, v) in uids.items():
+			if len(v) > 1:
+				Logs.error('* Several tasks use the same identifier. Please check the information on\n   https://waf.io/apidocs/Task.html?highlight=uid#waflib.Task.Task.uid')
+				tg_details = tsk.generator.name
+				if Logs.verbose > 2:
+					tg_details = tsk.generator
+				for tsk in v:
+					Logs.error('  - object %r (%r) defined in %r', tsk.__class__.__name__, tsk, tg_details)
+
+def check_invalid_constraints(self):
+	feat = set()
+	for x in list(TaskGen.feats.values()):
+		feat.union(set(x))
+	for (x, y) in TaskGen.task_gen.prec.items():
+		feat.add(x)
+		feat.union(set(y))
+	ext = set()
+	for x in TaskGen.task_gen.mappings.values():
+		ext.add(x.__name__)
+	invalid = ext & feat
+	if invalid:
+		Logs.error('The methods %r have invalid annotations:  @extension <-> @feature/@before_method/@after_method', list(invalid))
+
+	# the build scripts have been read, so we can check for invalid after/before attributes on task classes
+	for cls in list(Task.classes.values()):
+		if sys.hexversion > 0x3000000 and issubclass(cls, Task.Task) and isinstance(cls.hcode, str):
+			raise Errors.WafError('Class %r has hcode value %r of type <str>, expecting <bytes> (use Utils.h_cmd() ?)' % (cls, cls.hcode))
+
+		for x in ('before', 'after'):
+			for y in Utils.to_list(getattr(cls, x, [])):
+				if not Task.classes.get(y):
+					Logs.error('Erroneous order constraint %r=%r on task class %r', x, y, cls.__name__)
+		if getattr(cls, 'rule', None):
+			Logs.error('Erroneous attribute "rule" on task class %r (rename to "run_str")', cls.__name__)
+
+def replace(m):
+	"""
+	Replaces existing BuildContext methods to verify parameter names,
+	for example ``bld(source=)`` has no ending *s*
+	"""
+	oldcall = getattr(Build.BuildContext, m)
+	def call(self, *k, **kw):
+		ret = oldcall(self, *k, **kw)
+		for x in typos:
+			if x in kw:
+				if x == 'iscopy' and 'subst' in getattr(self, 'features', ''):
+					continue
+				Logs.error('Fix the typo %r -> %r on %r', x, typos[x], ret)
+		return ret
+	setattr(Build.BuildContext, m, call)
+
+def enhance_lib():
+	"""
+	Modifies existing classes and methods to enable error verification
+	"""
+	for m in meths_typos:
+		replace(m)
+
+	# catch '..' in ant_glob patterns
+	def ant_glob(self, *k, **kw):
+		if k:
+			lst = Utils.to_list(k[0])
+			for pat in lst:
+				sp = pat.split('/')
+				if '..' in sp:
+					Logs.error("In ant_glob pattern %r: '..' means 'two dots', not 'parent directory'", k[0])
+				if '.' in sp:
+					Logs.error("In ant_glob pattern %r: '.' means 'one dot', not 'current directory'", k[0])
+		return self.old_ant_glob(*k, **kw)
+	Node.Node.old_ant_glob = Node.Node.ant_glob
+	Node.Node.ant_glob = ant_glob
+
+	# catch ant_glob on build folders
+	def ant_iter(self, accept=None, maxdepth=25, pats=[], dir=False, src=True, remove=True, quiet=False):
+		if remove:
+			try:
+				if self.is_child_of(self.ctx.bldnode) and not quiet:
+					quiet = True
+					Logs.error('Calling ant_glob on build folders (%r) is dangerous: add quiet=True / remove=False', self)
+			except AttributeError:
+				pass
+		return self.old_ant_iter(accept, maxdepth, pats, dir, src, remove, quiet)
+	Node.Node.old_ant_iter = Node.Node.ant_iter
+	Node.Node.ant_iter = ant_iter
+
+	# catch conflicting ext_in/ext_out/before/after declarations
+	old = Task.is_before
+	def is_before(t1, t2):
+		ret = old(t1, t2)
+		if ret and old(t2, t1):
+			Logs.error('Contradictory order constraints in classes %r %r', t1, t2)
+		return ret
+	Task.is_before = is_before
+
+	# check for bld(feature='cshlib') where no 'c' is given - this can be either a mistake or on purpose
+	# so we only issue a warning
+	def check_err_features(self):
+		lst = self.to_list(self.features)
+		if 'shlib' in lst:
+			Logs.error('feature shlib -> cshlib, dshlib or cxxshlib')
+		for x in ('c', 'cxx', 'd', 'fc'):
+			if not x in lst and lst and lst[0] in [x+y for y in ('program', 'shlib', 'stlib')]:
+				Logs.error('%r features is probably missing %r', self, x)
+	TaskGen.feature('*')(check_err_features)
+
+	# check for erroneous order constraints
+	def check_err_order(self):
+		if not hasattr(self, 'rule') and not 'subst' in Utils.to_list(self.features):
+			for x in ('before', 'after', 'ext_in', 'ext_out'):
+				if hasattr(self, x):
+					Logs.warn('Erroneous order constraint %r on non-rule based task generator %r', x, self)
+		else:
+			for x in ('before', 'after'):
+				for y in self.to_list(getattr(self, x, [])):
+					if not Task.classes.get(y):
+						Logs.error('Erroneous order constraint %s=%r on %r (no such class)', x, y, self)
+	TaskGen.feature('*')(check_err_order)
+
+	# check for @extension used with @feature/@before_method/@after_method
+	def check_compile(self):
+		check_invalid_constraints(self)
+		try:
+			ret = self.orig_compile()
+		finally:
+			check_same_targets(self)
+		return ret
+	Build.BuildContext.orig_compile = Build.BuildContext.compile
+	Build.BuildContext.compile = check_compile
+
+	# check for invalid build groups #914
+	def use_rec(self, name, **kw):
+		try:
+			y = self.bld.get_tgen_by_name(name)
+		except Errors.WafError:
+			pass
+		else:
+			idx = self.bld.get_group_idx(self)
+			odx = self.bld.get_group_idx(y)
+			if odx > idx:
+				msg = "Invalid 'use' across build groups:"
+				if Logs.verbose > 1:
+					msg += '\n  target %r\n  uses:\n  %r' % (self, y)
+				else:
+					msg += " %r uses %r (try 'waf -v -v' for the full error)" % (self.name, name)
+				raise Errors.WafError(msg)
+		self.orig_use_rec(name, **kw)
+	TaskGen.task_gen.orig_use_rec = TaskGen.task_gen.use_rec
+	TaskGen.task_gen.use_rec = use_rec
+
+	# check for env.append
+	def _getattr(self, name, default=None):
+		if name == 'append' or name == 'add':
+			raise Errors.WafError('env.append and env.add do not exist: use env.append_value/env.append_unique')
+		elif name == 'prepend':
+			raise Errors.WafError('env.prepend does not exist: use env.prepend_value')
+		if name in self.__slots__:
+			return super(ConfigSet.ConfigSet, self).__getattr__(name, default)
+		else:
+			return self[name]
+	ConfigSet.ConfigSet.__getattr__ = _getattr
+
+
+def options(opt):
+	"""
+	Error verification can be enabled by default (not just on ``waf -v``) by adding to the user script options
+	"""
+	enhance_lib()
+
diff --git a/Tools/fc.py b/Tools/fc.py
new file mode 100644
index 0000000..d9e8d8c
--- /dev/null
+++ b/Tools/fc.py
@@ -0,0 +1,189 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# DC 2008
+# Thomas Nagy 2016-2018 (ita)
+
+"""
+Fortran support
+"""
+
+from waflib import Utils, Task, Errors
+from waflib.Tools import ccroot, fc_config, fc_scan
+from waflib.TaskGen import extension
+from waflib.Configure import conf
+
+ccroot.USELIB_VARS['fc'] = set(['FCFLAGS', 'DEFINES', 'INCLUDES', 'FCPPFLAGS'])
+ccroot.USELIB_VARS['fcprogram_test'] = ccroot.USELIB_VARS['fcprogram'] = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS'])
+ccroot.USELIB_VARS['fcshlib'] = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS'])
+ccroot.USELIB_VARS['fcstlib'] = set(['ARFLAGS', 'LINKDEPS'])
+
+@extension('.f','.F','.f90','.F90','.for','.FOR','.f95','.F95','.f03','.F03','.f08','.F08')
+def fc_hook(self, node):
+	"Binds the Fortran file extensions create :py:class:`waflib.Tools.fc.fc` instances"
+	return self.create_compiled_task('fc', node)
+
+@conf
+def modfile(conf, name):
+	"""
+	Turns a module name into the right module file name.
+	Defaults to all lower case.
+	"""
+	return {'lower'     :name.lower() + '.mod',
+		'lower.MOD' :name.lower() + '.MOD',
+		'UPPER.mod' :name.upper() + '.mod',
+		'UPPER'     :name.upper() + '.MOD'}[conf.env.FC_MOD_CAPITALIZATION or 'lower']
+
+def get_fortran_tasks(tsk):
+	"""
+	Obtains all fortran tasks from the same build group. Those tasks must not have
+	the attribute 'nomod' or 'mod_fortran_done'
+
+	:return: a list of :py:class:`waflib.Tools.fc.fc` instances
+	"""
+	bld = tsk.generator.bld
+	tasks = bld.get_tasks_group(bld.get_group_idx(tsk.generator))
+	return [x for x in tasks if isinstance(x, fc) and not getattr(x, 'nomod', None) and not getattr(x, 'mod_fortran_done', None)]
+
+class fc(Task.Task):
+	"""
+	Fortran tasks can only run when all fortran tasks in a current task group are ready to be executed
+	This may cause a deadlock if some fortran task is waiting for something that cannot happen (circular dependency)
+	Should this ever happen, set the 'nomod=True' on those tasks instances to break the loop
+	"""
+	color = 'GREEN'
+	run_str = '${FC} ${FCFLAGS} ${FCINCPATH_ST:INCPATHS} ${FCDEFINES_ST:DEFINES} ${_FCMODOUTFLAGS} ${FC_TGT_F}${TGT[0].abspath()} ${FC_SRC_F}${SRC[0].abspath()} ${FCPPFLAGS}'
+	vars = ["FORTRANMODPATHFLAG"]
+
+	def scan(self):
+		"""Fortran dependency scanner"""
+		tmp = fc_scan.fortran_parser(self.generator.includes_nodes)
+		tmp.task = self
+		tmp.start(self.inputs[0])
+		return (tmp.nodes, tmp.names)
+
+	def runnable_status(self):
+		"""
+		Sets the mod file outputs and the dependencies on the mod files over all Fortran tasks
+		executed by the main thread so there are no concurrency issues
+		"""
+		if getattr(self, 'mod_fortran_done', None):
+			return super(fc, self).runnable_status()
+
+		# now, if we reach this part it is because this fortran task is the first in the list
+		bld = self.generator.bld
+
+		# obtain the fortran tasks
+		lst = get_fortran_tasks(self)
+
+		# disable this method for other tasks
+		for tsk in lst:
+			tsk.mod_fortran_done = True
+
+		# wait for all the .f tasks to be ready for execution
+		# and ensure that the scanners are called at least once
+		for tsk in lst:
+			ret = tsk.runnable_status()
+			if ret == Task.ASK_LATER:
+				# we have to wait for one of the other fortran tasks to be ready
+				# this may deadlock if there are dependencies between fortran tasks
+				# but this should not happen (we are setting them here!)
+				for x in lst:
+					x.mod_fortran_done = None
+
+				return Task.ASK_LATER
+
+		ins = Utils.defaultdict(set)
+		outs = Utils.defaultdict(set)
+
+		# the .mod files to create
+		for tsk in lst:
+			key = tsk.uid()
+			for x in bld.raw_deps[key]:
+				if x.startswith('MOD@'):
+					name = bld.modfile(x.replace('MOD@', ''))
+					node = bld.srcnode.find_or_declare(name)
+					tsk.set_outputs(node)
+					outs[node].add(tsk)
+
+		# the .mod files to use
+		for tsk in lst:
+			key = tsk.uid()
+			for x in bld.raw_deps[key]:
+				if x.startswith('USE@'):
+					name = bld.modfile(x.replace('USE@', ''))
+					node = bld.srcnode.find_resource(name)
+					if node and node not in tsk.outputs:
+						if not node in bld.node_deps[key]:
+							bld.node_deps[key].append(node)
+						ins[node].add(tsk)
+
+		# if the intersection matches, set the order
+		for k in ins.keys():
+			for a in ins[k]:
+				a.run_after.update(outs[k])
+				for x in outs[k]:
+					self.generator.bld.producer.revdeps[x].add(a)
+
+				# the scanner cannot output nodes, so we have to set them
+				# ourselves as task.dep_nodes (additional input nodes)
+				tmp = []
+				for t in outs[k]:
+					tmp.extend(t.outputs)
+				a.dep_nodes.extend(tmp)
+				a.dep_nodes.sort(key=lambda x: x.abspath())
+
+		# the task objects have changed: clear the signature cache
+		for tsk in lst:
+			try:
+				delattr(tsk, 'cache_sig')
+			except AttributeError:
+				pass
+
+		return super(fc, self).runnable_status()
+
+class fcprogram(ccroot.link_task):
+	"""Links Fortran programs"""
+	color = 'YELLOW'
+	run_str = '${FC} ${LINKFLAGS} ${FCLNK_SRC_F}${SRC} ${FCLNK_TGT_F}${TGT[0].abspath()} ${RPATH_ST:RPATH} ${FCSTLIB_MARKER} ${FCSTLIBPATH_ST:STLIBPATH} ${FCSTLIB_ST:STLIB} ${FCSHLIB_MARKER} ${FCLIBPATH_ST:LIBPATH} ${FCLIB_ST:LIB} ${LDFLAGS}'
+	inst_to = '${BINDIR}'
+
+class fcshlib(fcprogram):
+	"""Links Fortran libraries"""
+	inst_to = '${LIBDIR}'
+
+class fcstlib(ccroot.stlink_task):
+	"""Links Fortran static libraries (uses ar by default)"""
+	pass # do not remove the pass statement
+
+class fcprogram_test(fcprogram):
+	"""Custom link task to obtain compiler outputs for Fortran configuration tests"""
+
+	def runnable_status(self):
+		"""This task is always executed"""
+		ret = super(fcprogram_test, self).runnable_status()
+		if ret == Task.SKIP_ME:
+			ret = Task.RUN_ME
+		return ret
+
+	def exec_command(self, cmd, **kw):
+		"""Stores the compiler std our/err onto the build context, to bld.out + bld.err"""
+		bld = self.generator.bld
+
+		kw['shell'] = isinstance(cmd, str)
+		kw['stdout'] = kw['stderr'] = Utils.subprocess.PIPE
+		kw['cwd'] = self.get_cwd()
+		bld.out = bld.err = ''
+
+		bld.to_log('command: %s\n' % cmd)
+
+		kw['output'] = 0
+		try:
+			(bld.out, bld.err) = bld.cmd_and_log(cmd, **kw)
+		except Errors.WafError:
+			return -1
+
+		if bld.out:
+			bld.to_log('out: %s\n' % bld.out)
+		if bld.err:
+			bld.to_log('err: %s\n' % bld.err)
+
diff --git a/Tools/fc_config.py b/Tools/fc_config.py
new file mode 100644
index 0000000..222f3a5
--- /dev/null
+++ b/Tools/fc_config.py
@@ -0,0 +1,488 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# DC 2008
+# Thomas Nagy 2016-2018 (ita)
+
+"""
+Fortran configuration helpers
+"""
+
+import re, os, sys, shlex
+from waflib.Configure import conf
+from waflib.TaskGen import feature, before_method
+
+FC_FRAGMENT = '        program main\n        end     program main\n'
+FC_FRAGMENT2 = '        PROGRAM MAIN\n        END\n' # what's the actual difference between these?
+
+@conf
+def fc_flags(conf):
+	"""
+	Defines common fortran configuration flags and file extensions
+	"""
+	v = conf.env
+
+	v.FC_SRC_F    = []
+	v.FC_TGT_F    = ['-c', '-o']
+	v.FCINCPATH_ST  = '-I%s'
+	v.FCDEFINES_ST  = '-D%s'
+
+	if not v.LINK_FC:
+		v.LINK_FC = v.FC
+
+	v.FCLNK_SRC_F = []
+	v.FCLNK_TGT_F = ['-o']
+
+	v.FCFLAGS_fcshlib   = ['-fpic']
+	v.LINKFLAGS_fcshlib = ['-shared']
+	v.fcshlib_PATTERN   = 'lib%s.so'
+
+	v.fcstlib_PATTERN   = 'lib%s.a'
+
+	v.FCLIB_ST       = '-l%s'
+	v.FCLIBPATH_ST   = '-L%s'
+	v.FCSTLIB_ST     = '-l%s'
+	v.FCSTLIBPATH_ST = '-L%s'
+	v.FCSTLIB_MARKER = '-Wl,-Bstatic'
+	v.FCSHLIB_MARKER = '-Wl,-Bdynamic'
+
+	v.SONAME_ST      = '-Wl,-h,%s'
+
+@conf
+def fc_add_flags(conf):
+	"""
+	Adds FCFLAGS / LDFLAGS / LINKFLAGS from os.environ to conf.env
+	"""
+	conf.add_os_flags('FCPPFLAGS', dup=False)
+	conf.add_os_flags('FCFLAGS', dup=False)
+	conf.add_os_flags('LINKFLAGS', dup=False)
+	conf.add_os_flags('LDFLAGS', dup=False)
+
+@conf
+def check_fortran(self, *k, **kw):
+	"""
+	Compiles a Fortran program to ensure that the settings are correct
+	"""
+	self.check_cc(
+		fragment         = FC_FRAGMENT,
+		compile_filename = 'test.f',
+		features         = 'fc fcprogram',
+		msg              = 'Compiling a simple fortran app')
+
+@conf
+def check_fc(self, *k, **kw):
+	"""
+	Same as :py:func:`waflib.Tools.c_config.check` but defaults to the *Fortran* programming language
+	(this overrides the C defaults in :py:func:`waflib.Tools.c_config.validate_c`)
+	"""
+	kw['compiler'] = 'fc'
+	if not 'compile_mode' in kw:
+		kw['compile_mode'] = 'fc'
+	if not 'type' in kw:
+		kw['type'] = 'fcprogram'
+	if not 'compile_filename' in kw:
+		kw['compile_filename'] = 'test.f90'
+	if not 'code' in kw:
+		kw['code'] = FC_FRAGMENT
+	return self.check(*k, **kw)
+
+# ------------------------------------------------------------------------
+# --- These are the default platform modifiers, refactored here for
+#     convenience.  gfortran and g95 have much overlap.
+# ------------------------------------------------------------------------
+
+@conf
+def fortran_modifier_darwin(conf):
+	"""
+	Defines Fortran flags and extensions for OSX systems
+	"""
+	v = conf.env
+	v.FCFLAGS_fcshlib   = ['-fPIC']
+	v.LINKFLAGS_fcshlib = ['-dynamiclib']
+	v.fcshlib_PATTERN   = 'lib%s.dylib'
+	v.FRAMEWORKPATH_ST  = '-F%s'
+	v.FRAMEWORK_ST      = ['-framework']
+
+	v.LINKFLAGS_fcstlib = []
+
+	v.FCSHLIB_MARKER    = ''
+	v.FCSTLIB_MARKER    = ''
+	v.SONAME_ST         = ''
+
+@conf
+def fortran_modifier_win32(conf):
+	"""
+	Defines Fortran flags for Windows platforms
+	"""
+	v = conf.env
+	v.fcprogram_PATTERN = v.fcprogram_test_PATTERN  = '%s.exe'
+
+	v.fcshlib_PATTERN   = '%s.dll'
+	v.implib_PATTERN    = '%s.dll.a'
+	v.IMPLIB_ST         = '-Wl,--out-implib,%s'
+
+	v.FCFLAGS_fcshlib   = []
+
+	# Auto-import is enabled by default even without this option,
+	# but enabling it explicitly has the nice effect of suppressing the rather boring, debug-level messages
+	# that the linker emits otherwise.
+	v.append_value('LINKFLAGS', ['-Wl,--enable-auto-import'])
+
+@conf
+def fortran_modifier_cygwin(conf):
+	"""
+	Defines Fortran flags for use on cygwin
+	"""
+	fortran_modifier_win32(conf)
+	v = conf.env
+	v.fcshlib_PATTERN = 'cyg%s.dll'
+	v.append_value('LINKFLAGS_fcshlib', ['-Wl,--enable-auto-image-base'])
+	v.FCFLAGS_fcshlib = []
+
+# ------------------------------------------------------------------------
+
+@conf
+def check_fortran_dummy_main(self, *k, **kw):
+	"""
+	Determines if a main function is needed by compiling a code snippet with
+	the C compiler and linking it with the Fortran compiler (useful on unix-like systems)
+	"""
+	if not self.env.CC:
+		self.fatal('A c compiler is required for check_fortran_dummy_main')
+
+	lst = ['MAIN__', '__MAIN', '_MAIN', 'MAIN_', 'MAIN']
+	lst.extend([m.lower() for m in lst])
+	lst.append('')
+
+	self.start_msg('Detecting whether we need a dummy main')
+	for main in lst:
+		kw['fortran_main'] = main
+		try:
+			self.check_cc(
+				fragment = 'int %s() { return 0; }\n' % (main or 'test'),
+				features = 'c fcprogram',
+				mandatory = True
+			)
+			if not main:
+				self.env.FC_MAIN = -1
+				self.end_msg('no')
+			else:
+				self.env.FC_MAIN = main
+				self.end_msg('yes %s' % main)
+			break
+		except self.errors.ConfigurationError:
+			pass
+	else:
+		self.end_msg('not found')
+		self.fatal('could not detect whether fortran requires a dummy main, see the config.log')
+
+# ------------------------------------------------------------------------
+
+GCC_DRIVER_LINE = re.compile('^Driving:')
+POSIX_STATIC_EXT = re.compile('\S+\.a')
+POSIX_LIB_FLAGS = re.compile('-l\S+')
+
+@conf
+def is_link_verbose(self, txt):
+	"""Returns True if 'useful' link options can be found in txt"""
+	assert isinstance(txt, str)
+	for line in txt.splitlines():
+		if not GCC_DRIVER_LINE.search(line):
+			if POSIX_STATIC_EXT.search(line) or POSIX_LIB_FLAGS.search(line):
+				return True
+	return False
+
+@conf
+def check_fortran_verbose_flag(self, *k, **kw):
+	"""
+	Checks what kind of verbose (-v) flag works, then sets it to env.FC_VERBOSE_FLAG
+	"""
+	self.start_msg('fortran link verbose flag')
+	for x in ('-v', '--verbose', '-verbose', '-V'):
+		try:
+			self.check_cc(
+				features = 'fc fcprogram_test',
+				fragment = FC_FRAGMENT2,
+				compile_filename = 'test.f',
+				linkflags = [x],
+				mandatory=True)
+		except self.errors.ConfigurationError:
+			pass
+		else:
+			# output is on stderr or stdout (for xlf)
+			if self.is_link_verbose(self.test_bld.err) or self.is_link_verbose(self.test_bld.out):
+				self.end_msg(x)
+				break
+	else:
+		self.end_msg('failure')
+		self.fatal('Could not obtain the fortran link verbose flag (see config.log)')
+
+	self.env.FC_VERBOSE_FLAG = x
+	return x
+
+# ------------------------------------------------------------------------
+
+# linkflags which match those are ignored
+LINKFLAGS_IGNORED = [r'-lang*', r'-lcrt[a-zA-Z0-9\.]*\.o', r'-lc$', r'-lSystem', r'-libmil', r'-LIST:*', r'-LNO:*']
+if os.name == 'nt':
+	LINKFLAGS_IGNORED.extend([r'-lfrt*', r'-luser32', r'-lkernel32', r'-ladvapi32', r'-lmsvcrt', r'-lshell32', r'-lmingw', r'-lmoldname'])
+else:
+	LINKFLAGS_IGNORED.append(r'-lgcc*')
+RLINKFLAGS_IGNORED = [re.compile(f) for f in LINKFLAGS_IGNORED]
+
+def _match_ignore(line):
+	"""Returns True if the line should be ignored (Fortran verbose flag test)"""
+	for i in RLINKFLAGS_IGNORED:
+		if i.match(line):
+			return True
+	return False
+
+def parse_fortran_link(lines):
+	"""Given the output of verbose link of Fortran compiler, this returns a
+	list of flags necessary for linking using the standard linker."""
+	final_flags = []
+	for line in lines:
+		if not GCC_DRIVER_LINE.match(line):
+			_parse_flink_line(line, final_flags)
+	return final_flags
+
+SPACE_OPTS = re.compile('^-[LRuYz]$')
+NOSPACE_OPTS = re.compile('^-[RL]')
+
+def _parse_flink_token(lexer, token, tmp_flags):
+	# Here we go (convention for wildcard is shell, not regex !)
+	#   1 TODO: we first get some root .a libraries
+	#   2 TODO: take everything starting by -bI:*
+	#   3 Ignore the following flags: -lang* | -lcrt*.o | -lc |
+	#   -lgcc* | -lSystem | -libmil | -LANG:=* | -LIST:* | -LNO:*)
+	#   4 take into account -lkernel32
+	#   5 For options of the kind -[[LRuYz]], as they take one argument
+	#   after, the actual option is the next token
+	#   6 For -YP,*: take and replace by -Larg where arg is the old
+	#   argument
+	#   7 For -[lLR]*: take
+
+	# step 3
+	if _match_ignore(token):
+		pass
+	# step 4
+	elif token.startswith('-lkernel32') and sys.platform == 'cygwin':
+		tmp_flags.append(token)
+	# step 5
+	elif SPACE_OPTS.match(token):
+		t = lexer.get_token()
+		if t.startswith('P,'):
+			t = t[2:]
+		for opt in t.split(os.pathsep):
+			tmp_flags.append('-L%s' % opt)
+	# step 6
+	elif NOSPACE_OPTS.match(token):
+		tmp_flags.append(token)
+	# step 7
+	elif POSIX_LIB_FLAGS.match(token):
+		tmp_flags.append(token)
+	else:
+		# ignore anything not explicitly taken into account
+		pass
+
+	t = lexer.get_token()
+	return t
+
+def _parse_flink_line(line, final_flags):
+	"""private"""
+	lexer = shlex.shlex(line, posix = True)
+	lexer.whitespace_split = True
+
+	t = lexer.get_token()
+	tmp_flags = []
+	while t:
+		t = _parse_flink_token(lexer, t, tmp_flags)
+
+	final_flags.extend(tmp_flags)
+	return final_flags
+
+@conf
+def check_fortran_clib(self, autoadd=True, *k, **kw):
+	"""
+	Obtains the flags for linking with the C library
+	if this check works, add uselib='CLIB' to your task generators
+	"""
+	if not self.env.FC_VERBOSE_FLAG:
+		self.fatal('env.FC_VERBOSE_FLAG is not set: execute check_fortran_verbose_flag?')
+
+	self.start_msg('Getting fortran runtime link flags')
+	try:
+		self.check_cc(
+			fragment = FC_FRAGMENT2,
+			compile_filename = 'test.f',
+			features = 'fc fcprogram_test',
+			linkflags = [self.env.FC_VERBOSE_FLAG]
+		)
+	except Exception:
+		self.end_msg(False)
+		if kw.get('mandatory', True):
+			conf.fatal('Could not find the c library flags')
+	else:
+		out = self.test_bld.err
+		flags = parse_fortran_link(out.splitlines())
+		self.end_msg('ok (%s)' % ' '.join(flags))
+		self.env.LINKFLAGS_CLIB = flags
+		return flags
+	return []
+
+def getoutput(conf, cmd, stdin=False):
+	"""
+	Obtains Fortran command outputs
+	"""
+	from waflib import Errors
+	if conf.env.env:
+		env = conf.env.env
+	else:
+		env = dict(os.environ)
+		env['LANG'] = 'C'
+	input = stdin and '\n'.encode() or None
+	try:
+		out, err = conf.cmd_and_log(cmd, env=env, output=0, input=input)
+	except Errors.WafError as e:
+		# An WafError might indicate an error code during the command
+		# execution, in this case we still obtain the stderr and stdout,
+		# which we can use to find the version string.
+		if not (hasattr(e, 'stderr') and hasattr(e, 'stdout')):
+			raise e
+		else:
+			# Ignore the return code and return the original
+			# stdout and stderr.
+			out = e.stdout
+			err = e.stderr
+	except Exception:
+		conf.fatal('could not determine the compiler version %r' % cmd)
+	return (out, err)
+
+# ------------------------------------------------------------------------
+
+ROUTINES_CODE = """\
+      subroutine foobar()
+      return
+      end
+      subroutine foo_bar()
+      return
+      end
+"""
+
+MAIN_CODE = """
+void %(dummy_func_nounder)s(void);
+void %(dummy_func_under)s(void);
+int %(main_func_name)s() {
+  %(dummy_func_nounder)s();
+  %(dummy_func_under)s();
+  return 0;
+}
+"""
+
+@feature('link_main_routines_func')
+@before_method('process_source')
+def link_main_routines_tg_method(self):
+	"""
+	The configuration test declares a unique task generator,
+	so we create other task generators from there for fortran link tests
+	"""
+	def write_test_file(task):
+		task.outputs[0].write(task.generator.code)
+	bld = self.bld
+	bld(rule=write_test_file, target='main.c', code=MAIN_CODE % self.__dict__)
+	bld(rule=write_test_file, target='test.f', code=ROUTINES_CODE)
+	bld(features='fc fcstlib', source='test.f', target='test')
+	bld(features='c fcprogram', source='main.c', target='app', use='test')
+
+def mangling_schemes():
+	"""
+	Generate triplets for use with mangle_name
+	(used in check_fortran_mangling)
+	the order is tuned for gfortan
+	"""
+	for u in ('_', ''):
+		for du in ('', '_'):
+			for c in ("lower", "upper"):
+				yield (u, du, c)
+
+def mangle_name(u, du, c, name):
+	"""Mangle a name from a triplet (used in check_fortran_mangling)"""
+	return getattr(name, c)() + u + (name.find('_') != -1 and du or '')
+
+@conf
+def check_fortran_mangling(self, *k, **kw):
+	"""
+	Detect the mangling scheme, sets FORTRAN_MANGLING to the triplet found
+
+	This test will compile a fortran static library, then link a c app against it
+	"""
+	if not self.env.CC:
+		self.fatal('A c compiler is required for link_main_routines')
+	if not self.env.FC:
+		self.fatal('A fortran compiler is required for link_main_routines')
+	if not self.env.FC_MAIN:
+		self.fatal('Checking for mangling requires self.env.FC_MAIN (execute "check_fortran_dummy_main" first?)')
+
+	self.start_msg('Getting fortran mangling scheme')
+	for (u, du, c) in mangling_schemes():
+		try:
+			self.check_cc(
+				compile_filename   = [],
+				features           = 'link_main_routines_func',
+				msg                = 'nomsg',
+				errmsg             = 'nomsg',
+				dummy_func_nounder = mangle_name(u, du, c, 'foobar'),
+				dummy_func_under   = mangle_name(u, du, c, 'foo_bar'),
+				main_func_name     = self.env.FC_MAIN
+			)
+		except self.errors.ConfigurationError:
+			pass
+		else:
+			self.end_msg("ok ('%s', '%s', '%s-case')" % (u, du, c))
+			self.env.FORTRAN_MANGLING = (u, du, c)
+			break
+	else:
+		self.end_msg(False)
+		self.fatal('mangler not found')
+	return (u, du, c)
+
+@feature('pyext')
+@before_method('propagate_uselib_vars', 'apply_link')
+def set_lib_pat(self):
+	"""Sets the Fortran flags for linking with Python"""
+	self.env.fcshlib_PATTERN = self.env.pyext_PATTERN
+
+@conf
+def detect_openmp(self):
+	"""
+	Detects openmp flags and sets the OPENMP ``FCFLAGS``/``LINKFLAGS``
+	"""
+	for x in ('-fopenmp','-openmp','-mp','-xopenmp','-omp','-qsmp=omp'):
+		try:
+			self.check_fc(
+				msg          = 'Checking for OpenMP flag %s' % x,
+				fragment     = 'program main\n  call omp_get_num_threads()\nend program main',
+				fcflags      = x,
+				linkflags    = x,
+				uselib_store = 'OPENMP'
+			)
+		except self.errors.ConfigurationError:
+			pass
+		else:
+			break
+	else:
+		self.fatal('Could not find OpenMP')
+
+@conf
+def check_gfortran_o_space(self):
+	if self.env.FC_NAME != 'GFORTRAN' or int(self.env.FC_VERSION[0]) > 4:
+		# This is for old compilers and only for gfortran.
+		# No idea how other implementations handle this. Be safe and bail out.
+		return
+	self.env.stash()
+	self.env.FCLNK_TGT_F = ['-o', '']
+	try:
+		self.check_fc(msg='Checking if the -o link must be split from arguments', fragment=FC_FRAGMENT, features='fc fcshlib')
+	except self.errors.ConfigurationError:
+		self.env.revert()
+	else:
+		self.env.commit()
diff --git a/Tools/fc_scan.py b/Tools/fc_scan.py
new file mode 100644
index 0000000..12cb0fc
--- /dev/null
+++ b/Tools/fc_scan.py
@@ -0,0 +1,114 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# DC 2008
+# Thomas Nagy 2016-2018 (ita)
+
+import re
+
+INC_REGEX = """(?:^|['">]\s*;)\s*(?:|#\s*)INCLUDE\s+(?:\w+_)?[<"'](.+?)(?=["'>])"""
+USE_REGEX = """(?:^|;)\s*USE(?:\s+|(?:(?:\s*,\s*(?:NON_)?INTRINSIC)?\s*::))\s*(\w+)"""
+MOD_REGEX = """(?:^|;)\s*MODULE(?!\s*PROCEDURE)(?:\s+|(?:(?:\s*,\s*(?:NON_)?INTRINSIC)?\s*::))\s*(\w+)"""
+
+re_inc = re.compile(INC_REGEX, re.I)
+re_use = re.compile(USE_REGEX, re.I)
+re_mod = re.compile(MOD_REGEX, re.I)
+
+class fortran_parser(object):
+	"""
+	This parser returns:
+
+	* the nodes corresponding to the module names to produce
+	* the nodes corresponding to the include files used
+	* the module names used by the fortran files
+	"""
+	def __init__(self, incpaths):
+		self.seen = []
+		"""Files already parsed"""
+
+		self.nodes = []
+		"""List of :py:class:`waflib.Node.Node` representing the dependencies to return"""
+
+		self.names = []
+		"""List of module names to return"""
+
+		self.incpaths = incpaths
+		"""List of :py:class:`waflib.Node.Node` representing the include paths"""
+
+	def find_deps(self, node):
+		"""
+		Parses a Fortran file to obtain the dependencies used/provided
+
+		:param node: fortran file to read
+		:type node: :py:class:`waflib.Node.Node`
+		:return: lists representing the includes, the modules used, and the modules created by a fortran file
+		:rtype: tuple of list of strings
+		"""
+		txt = node.read()
+		incs = []
+		uses = []
+		mods = []
+		for line in txt.splitlines():
+			# line by line regexp search? optimize?
+			m = re_inc.search(line)
+			if m:
+				incs.append(m.group(1))
+			m = re_use.search(line)
+			if m:
+				uses.append(m.group(1))
+			m = re_mod.search(line)
+			if m:
+				mods.append(m.group(1))
+		return (incs, uses, mods)
+
+	def start(self, node):
+		"""
+		Start parsing. Use the stack ``self.waiting`` to hold nodes to iterate on
+
+		:param node: fortran file
+		:type node: :py:class:`waflib.Node.Node`
+		"""
+		self.waiting = [node]
+		while self.waiting:
+			nd = self.waiting.pop(0)
+			self.iter(nd)
+
+	def iter(self, node):
+		"""
+		Processes a single file during dependency parsing. Extracts files used
+		modules used and modules provided.
+		"""
+		incs, uses, mods = self.find_deps(node)
+		for x in incs:
+			if x in self.seen:
+				continue
+			self.seen.append(x)
+			self.tryfind_header(x)
+
+		for x in uses:
+			name = "USE@%s" % x
+			if not name in self.names:
+				self.names.append(name)
+
+		for x in mods:
+			name = "MOD@%s" % x
+			if not name in self.names:
+				self.names.append(name)
+
+	def tryfind_header(self, filename):
+		"""
+		Adds an include file to the list of nodes to process
+
+		:param filename: file name
+		:type filename: string
+		"""
+		found = None
+		for n in self.incpaths:
+			found = n.find_resource(filename)
+			if found:
+				self.nodes.append(found)
+				self.waiting.append(found)
+				break
+		if not found:
+			if not filename in self.names:
+				self.names.append(filename)
+
diff --git a/Tools/flex.py b/Tools/flex.py
new file mode 100644
index 0000000..2256657
--- /dev/null
+++ b/Tools/flex.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# John O'Meara, 2006
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+The **flex** program is a code generator which creates C or C++ files.
+The generated files are compiled into object files.
+"""
+
+import os, re
+from waflib import Task, TaskGen
+from waflib.Tools import ccroot
+
+def decide_ext(self, node):
+	if 'cxx' in self.features:
+		return ['.lex.cc']
+	return ['.lex.c']
+
+def flexfun(tsk):
+	env = tsk.env
+	bld = tsk.generator.bld
+	wd = bld.variant_dir
+	def to_list(xx):
+		if isinstance(xx, str):
+			return [xx]
+		return xx
+	tsk.last_cmd = lst = []
+	lst.extend(to_list(env.FLEX))
+	lst.extend(to_list(env.FLEXFLAGS))
+	inputs = [a.path_from(tsk.get_cwd()) for a in tsk.inputs]
+	if env.FLEX_MSYS:
+		inputs = [x.replace(os.sep, '/') for x in inputs]
+	lst.extend(inputs)
+	lst = [x for x in lst if x]
+	txt = bld.cmd_and_log(lst, cwd=wd, env=env.env or None, quiet=0)
+	tsk.outputs[0].write(txt.replace('\r\n', '\n').replace('\r', '\n')) # issue #1207
+
+TaskGen.declare_chain(
+	name = 'flex',
+	rule = flexfun, # issue #854
+	ext_in = '.l',
+	decider = decide_ext,
+)
+
+# To support the following:
+# bld(features='c', flexflags='-P/foo')
+Task.classes['flex'].vars = ['FLEXFLAGS', 'FLEX']
+ccroot.USELIB_VARS['c'].add('FLEXFLAGS')
+ccroot.USELIB_VARS['cxx'].add('FLEXFLAGS')
+
+def configure(conf):
+	"""
+	Detect the *flex* program
+	"""
+	conf.find_program('flex', var='FLEX')
+	conf.env.FLEXFLAGS = ['-t']
+
+	if re.search (r"\\msys\\[0-9.]+\\bin\\flex.exe$", conf.env.FLEX[0]):
+		# this is the flex shipped with MSYS
+		conf.env.FLEX_MSYS = True
+
diff --git a/Tools/g95.py b/Tools/g95.py
new file mode 100644
index 0000000..f69ba4f
--- /dev/null
+++ b/Tools/g95.py
@@ -0,0 +1,66 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# KWS 2010
+# Thomas Nagy 2016-2018 (ita)
+
+import re
+from waflib import Utils
+from waflib.Tools import fc, fc_config, fc_scan, ar
+from waflib.Configure import conf
+
+@conf
+def find_g95(conf):
+	fc = conf.find_program('g95', var='FC')
+	conf.get_g95_version(fc)
+	conf.env.FC_NAME = 'G95'
+
+@conf
+def g95_flags(conf):
+	v = conf.env
+	v.FCFLAGS_fcshlib   = ['-fPIC']
+	v.FORTRANMODFLAG  = ['-fmod=', ''] # template for module path
+	v.FCFLAGS_DEBUG = ['-Werror'] # why not
+
+@conf
+def g95_modifier_win32(conf):
+	fc_config.fortran_modifier_win32(conf)
+
+@conf
+def g95_modifier_cygwin(conf):
+	fc_config.fortran_modifier_cygwin(conf)
+
+@conf
+def g95_modifier_darwin(conf):
+	fc_config.fortran_modifier_darwin(conf)
+
+@conf
+def g95_modifier_platform(conf):
+	dest_os = conf.env.DEST_OS or Utils.unversioned_sys_platform()
+	g95_modifier_func = getattr(conf, 'g95_modifier_' + dest_os, None)
+	if g95_modifier_func:
+		g95_modifier_func()
+
+@conf
+def get_g95_version(conf, fc):
+	"""get the compiler version"""
+
+	version_re = re.compile(r"g95\s*(?P<major>\d*)\.(?P<minor>\d*)").search
+	cmd = fc + ['--version']
+	out, err = fc_config.getoutput(conf, cmd, stdin=False)
+	if out:
+		match = version_re(out)
+	else:
+		match = version_re(err)
+	if not match:
+		conf.fatal('cannot determine g95 version')
+	k = match.groupdict()
+	conf.env.FC_VERSION = (k['major'], k['minor'])
+
+def configure(conf):
+	conf.find_g95()
+	conf.find_ar()
+	conf.fc_flags()
+	conf.fc_add_flags()
+	conf.g95_flags()
+	conf.g95_modifier_platform()
+
diff --git a/Tools/gas.py b/Tools/gas.py
new file mode 100644
index 0000000..77afed7
--- /dev/null
+++ b/Tools/gas.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2008-2018 (ita)
+
+"Detect as/gas/gcc for compiling assembly files"
+
+import waflib.Tools.asm # - leave this
+from waflib.Tools import ar
+
+def configure(conf):
+	"""
+	Find the programs gas/as/gcc and set the variable *AS*
+	"""
+	conf.find_program(['gas', 'gcc'], var='AS')
+	conf.env.AS_TGT_F = ['-c', '-o']
+	conf.env.ASLNK_TGT_F = ['-o']
+	conf.find_ar()
+	conf.load('asm')
diff --git a/Tools/gcc.py b/Tools/gcc.py
new file mode 100644
index 0000000..acdd473
--- /dev/null
+++ b/Tools/gcc.py
@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+# Ralf Habacker, 2006 (rh)
+# Yinon Ehrlich, 2009
+
+"""
+gcc/llvm detection.
+"""
+
+from waflib.Tools import ccroot, ar
+from waflib.Configure import conf
+
+@conf
+def find_gcc(conf):
+	"""
+	Find the program gcc, and if present, try to detect its version number
+	"""
+	cc = conf.find_program(['gcc', 'cc'], var='CC')
+	conf.get_cc_version(cc, gcc=True)
+	conf.env.CC_NAME = 'gcc'
+
+@conf
+def gcc_common_flags(conf):
+	"""
+	Common flags for gcc on nearly all platforms
+	"""
+	v = conf.env
+
+	v.CC_SRC_F            = []
+	v.CC_TGT_F            = ['-c', '-o']
+
+	if not v.LINK_CC:
+		v.LINK_CC = v.CC
+
+	v.CCLNK_SRC_F         = []
+	v.CCLNK_TGT_F         = ['-o']
+	v.CPPPATH_ST          = '-I%s'
+	v.DEFINES_ST          = '-D%s'
+
+	v.LIB_ST              = '-l%s' # template for adding libs
+	v.LIBPATH_ST          = '-L%s' # template for adding libpaths
+	v.STLIB_ST            = '-l%s'
+	v.STLIBPATH_ST        = '-L%s'
+	v.RPATH_ST            = '-Wl,-rpath,%s'
+
+	v.SONAME_ST           = '-Wl,-h,%s'
+	v.SHLIB_MARKER        = '-Wl,-Bdynamic'
+	v.STLIB_MARKER        = '-Wl,-Bstatic'
+
+	v.cprogram_PATTERN    = '%s'
+
+	v.CFLAGS_cshlib       = ['-fPIC']
+	v.LINKFLAGS_cshlib    = ['-shared']
+	v.cshlib_PATTERN      = 'lib%s.so'
+
+	v.LINKFLAGS_cstlib    = ['-Wl,-Bstatic']
+	v.cstlib_PATTERN      = 'lib%s.a'
+
+	v.LINKFLAGS_MACBUNDLE = ['-bundle', '-undefined', 'dynamic_lookup']
+	v.CFLAGS_MACBUNDLE    = ['-fPIC']
+	v.macbundle_PATTERN   = '%s.bundle'
+
+@conf
+def gcc_modifier_win32(conf):
+	"""Configuration flags for executing gcc on Windows"""
+	v = conf.env
+	v.cprogram_PATTERN    = '%s.exe'
+
+	v.cshlib_PATTERN      = '%s.dll'
+	v.implib_PATTERN      = '%s.dll.a'
+	v.IMPLIB_ST           = '-Wl,--out-implib,%s'
+
+	v.CFLAGS_cshlib       = []
+
+	# Auto-import is enabled by default even without this option,
+	# but enabling it explicitly has the nice effect of suppressing the rather boring, debug-level messages
+	# that the linker emits otherwise.
+	v.append_value('LINKFLAGS', ['-Wl,--enable-auto-import'])
+
+@conf
+def gcc_modifier_cygwin(conf):
+	"""Configuration flags for executing gcc on Cygwin"""
+	gcc_modifier_win32(conf)
+	v = conf.env
+	v.cshlib_PATTERN = 'cyg%s.dll'
+	v.append_value('LINKFLAGS_cshlib', ['-Wl,--enable-auto-image-base'])
+	v.CFLAGS_cshlib = []
+
+@conf
+def gcc_modifier_darwin(conf):
+	"""Configuration flags for executing gcc on MacOS"""
+	v = conf.env
+	v.CFLAGS_cshlib       = ['-fPIC']
+	v.LINKFLAGS_cshlib    = ['-dynamiclib']
+	v.cshlib_PATTERN      = 'lib%s.dylib'
+	v.FRAMEWORKPATH_ST    = '-F%s'
+	v.FRAMEWORK_ST        = ['-framework']
+	v.ARCH_ST             = ['-arch']
+
+	v.LINKFLAGS_cstlib    = []
+
+	v.SHLIB_MARKER        = []
+	v.STLIB_MARKER        = []
+	v.SONAME_ST           = []
+
+@conf
+def gcc_modifier_aix(conf):
+	"""Configuration flags for executing gcc on AIX"""
+	v = conf.env
+	v.LINKFLAGS_cprogram  = ['-Wl,-brtl']
+	v.LINKFLAGS_cshlib    = ['-shared','-Wl,-brtl,-bexpfull']
+	v.SHLIB_MARKER        = []
+
+@conf
+def gcc_modifier_hpux(conf):
+	v = conf.env
+	v.SHLIB_MARKER        = []
+	v.STLIB_MARKER        = []
+	v.CFLAGS_cshlib       = ['-fPIC','-DPIC']
+	v.cshlib_PATTERN      = 'lib%s.sl'
+
+@conf
+def gcc_modifier_openbsd(conf):
+	conf.env.SONAME_ST = []
+
+@conf
+def gcc_modifier_osf1V(conf):
+	v = conf.env
+	v.SHLIB_MARKER        = []
+	v.STLIB_MARKER        = []
+	v.SONAME_ST           = []
+
+@conf
+def gcc_modifier_platform(conf):
+	"""Execute platform-specific functions based on *gcc_modifier_+NAME*"""
+	# * set configurations specific for a platform.
+	# * the destination platform is detected automatically by looking at the macros the compiler predefines,
+	#   and if it's not recognised, it fallbacks to sys.platform.
+	gcc_modifier_func = getattr(conf, 'gcc_modifier_' + conf.env.DEST_OS, None)
+	if gcc_modifier_func:
+		gcc_modifier_func()
+
+def configure(conf):
+	"""
+	Configuration for gcc
+	"""
+	conf.find_gcc()
+	conf.find_ar()
+	conf.gcc_common_flags()
+	conf.gcc_modifier_platform()
+	conf.cc_load_tools()
+	conf.cc_add_flags()
+	conf.link_add_flags()
+	conf.check_gcc_o_space()
+
diff --git a/Tools/gdc.py b/Tools/gdc.py
new file mode 100644
index 0000000..d89a66d
--- /dev/null
+++ b/Tools/gdc.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Carlos Rafael Giani, 2007 (dv)
+
+from waflib.Tools import ar, d
+from waflib.Configure import conf
+
+@conf
+def find_gdc(conf):
+	"""
+	Finds the program gdc and set the variable *D*
+	"""
+	conf.find_program('gdc', var='D')
+
+	out = conf.cmd_and_log(conf.env.D + ['--version'])
+	if out.find("gdc") == -1:
+		conf.fatal("detected compiler is not gdc")
+
+@conf
+def common_flags_gdc(conf):
+	"""
+	Sets the flags required by *gdc*
+	"""
+	v = conf.env
+
+	v.DFLAGS            = []
+
+	v.D_SRC_F           = ['-c']
+	v.D_TGT_F           = '-o%s'
+
+	v.D_LINKER          = v.D
+	v.DLNK_SRC_F        = ''
+	v.DLNK_TGT_F        = '-o%s'
+	v.DINC_ST           = '-I%s'
+
+	v.DSHLIB_MARKER = v.DSTLIB_MARKER = ''
+	v.DSTLIB_ST = v.DSHLIB_ST         = '-l%s'
+	v.DSTLIBPATH_ST = v.DLIBPATH_ST   = '-L%s'
+
+	v.LINKFLAGS_dshlib  = ['-shared']
+
+	v.DHEADER_ext       = '.di'
+	v.DFLAGS_d_with_header = '-fintfc'
+	v.D_HDR_F           = '-fintfc-file=%s'
+
+def configure(conf):
+	"""
+	Configuration for gdc
+	"""
+	conf.find_gdc()
+	conf.load('ar')
+	conf.load('d')
+	conf.common_flags_gdc()
+	conf.d_platform_flags()
+
diff --git a/Tools/gfortran.py b/Tools/gfortran.py
new file mode 100644
index 0000000..1050667
--- /dev/null
+++ b/Tools/gfortran.py
@@ -0,0 +1,93 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# DC 2008
+# Thomas Nagy 2016-2018 (ita)
+
+import re
+from waflib import Utils
+from waflib.Tools import fc, fc_config, fc_scan, ar
+from waflib.Configure import conf
+
+@conf
+def find_gfortran(conf):
+	"""Find the gfortran program (will look in the environment variable 'FC')"""
+	fc = conf.find_program(['gfortran','g77'], var='FC')
+	# (fallback to g77 for systems, where no gfortran is available)
+	conf.get_gfortran_version(fc)
+	conf.env.FC_NAME = 'GFORTRAN'
+
+@conf
+def gfortran_flags(conf):
+	v = conf.env
+	v.FCFLAGS_fcshlib = ['-fPIC']
+	v.FORTRANMODFLAG = ['-J', ''] # template for module path
+	v.FCFLAGS_DEBUG = ['-Werror'] # why not
+
+@conf
+def gfortran_modifier_win32(conf):
+	fc_config.fortran_modifier_win32(conf)
+
+@conf
+def gfortran_modifier_cygwin(conf):
+	fc_config.fortran_modifier_cygwin(conf)
+
+@conf
+def gfortran_modifier_darwin(conf):
+	fc_config.fortran_modifier_darwin(conf)
+
+@conf
+def gfortran_modifier_platform(conf):
+	dest_os = conf.env.DEST_OS or Utils.unversioned_sys_platform()
+	gfortran_modifier_func = getattr(conf, 'gfortran_modifier_' + dest_os, None)
+	if gfortran_modifier_func:
+		gfortran_modifier_func()
+
+@conf
+def get_gfortran_version(conf, fc):
+	"""Get the compiler version"""
+
+	# ensure this is actually gfortran, not an imposter.
+	version_re = re.compile(r"GNU\s*Fortran", re.I).search
+	cmd = fc + ['--version']
+	out, err = fc_config.getoutput(conf, cmd, stdin=False)
+	if out:
+		match = version_re(out)
+	else:
+		match = version_re(err)
+	if not match:
+		conf.fatal('Could not determine the compiler type')
+
+	# --- now get more detailed info -- see c_config.get_cc_version
+	cmd = fc + ['-dM', '-E', '-']
+	out, err = fc_config.getoutput(conf, cmd, stdin=True)
+
+	if out.find('__GNUC__') < 0:
+		conf.fatal('Could not determine the compiler type')
+
+	k = {}
+	out = out.splitlines()
+	import shlex
+
+	for line in out:
+		lst = shlex.split(line)
+		if len(lst)>2:
+			key = lst[1]
+			val = lst[2]
+			k[key] = val
+
+	def isD(var):
+		return var in k
+
+	def isT(var):
+		return var in k and k[var] != '0'
+
+	conf.env.FC_VERSION = (k['__GNUC__'], k['__GNUC_MINOR__'], k['__GNUC_PATCHLEVEL__'])
+
+def configure(conf):
+	conf.find_gfortran()
+	conf.find_ar()
+	conf.fc_flags()
+	conf.fc_add_flags()
+	conf.gfortran_flags()
+	conf.gfortran_modifier_platform()
+	conf.check_gfortran_o_space()
diff --git a/Tools/glib2.py b/Tools/glib2.py
new file mode 100644
index 0000000..949fe37
--- /dev/null
+++ b/Tools/glib2.py
@@ -0,0 +1,489 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+Support for GLib2 tools:
+
+* marshal
+* enums
+* gsettings
+* gresource
+"""
+
+import os
+import functools
+from waflib import Context, Task, Utils, Options, Errors, Logs
+from waflib.TaskGen import taskgen_method, before_method, feature, extension
+from waflib.Configure import conf
+
+################## marshal files
+
+@taskgen_method
+def add_marshal_file(self, filename, prefix):
+	"""
+	Adds a file to the list of marshal files to process. Store them in the attribute *marshal_list*.
+
+	:param filename: xml file to compile
+	:type filename: string
+	:param prefix: marshal prefix (--prefix=prefix)
+	:type prefix: string
+	"""
+	if not hasattr(self, 'marshal_list'):
+		self.marshal_list = []
+	self.meths.append('process_marshal')
+	self.marshal_list.append((filename, prefix))
+
+@before_method('process_source')
+def process_marshal(self):
+	"""
+	Processes the marshal files stored in the attribute *marshal_list* to create :py:class:`waflib.Tools.glib2.glib_genmarshal` instances.
+	Adds the c file created to the list of source to process.
+	"""
+	for f, prefix in getattr(self, 'marshal_list', []):
+		node = self.path.find_resource(f)
+
+		if not node:
+			raise Errors.WafError('file not found %r' % f)
+
+		h_node = node.change_ext('.h')
+		c_node = node.change_ext('.c')
+
+		task = self.create_task('glib_genmarshal', node, [h_node, c_node])
+		task.env.GLIB_GENMARSHAL_PREFIX = prefix
+	self.source = self.to_nodes(getattr(self, 'source', []))
+	self.source.append(c_node)
+
+class glib_genmarshal(Task.Task):
+	vars    = ['GLIB_GENMARSHAL_PREFIX', 'GLIB_GENMARSHAL']
+	color   = 'BLUE'
+	ext_out = ['.h']
+	def run(self):
+		bld = self.generator.bld
+
+		get = self.env.get_flat
+		cmd1 = "%s %s --prefix=%s --header > %s" % (
+			get('GLIB_GENMARSHAL'),
+			self.inputs[0].srcpath(),
+			get('GLIB_GENMARSHAL_PREFIX'),
+			self.outputs[0].abspath()
+		)
+
+		ret = bld.exec_command(cmd1)
+		if ret:
+			return ret
+
+		#print self.outputs[1].abspath()
+		c = '''#include "%s"\n''' % self.outputs[0].name
+		self.outputs[1].write(c)
+
+		cmd2 = "%s %s --prefix=%s --body >> %s" % (
+			get('GLIB_GENMARSHAL'),
+			self.inputs[0].srcpath(),
+			get('GLIB_GENMARSHAL_PREFIX'),
+			self.outputs[1].abspath()
+		)
+		return bld.exec_command(cmd2)
+
+########################## glib-mkenums
+
+@taskgen_method
+def add_enums_from_template(self, source='', target='', template='', comments=''):
+	"""
+	Adds a file to the list of enum files to process. Stores them in the attribute *enums_list*.
+
+	:param source: enum file to process
+	:type source: string
+	:param target: target file
+	:type target: string
+	:param template: template file
+	:type template: string
+	:param comments: comments
+	:type comments: string
+	"""
+	if not hasattr(self, 'enums_list'):
+		self.enums_list = []
+	self.meths.append('process_enums')
+	self.enums_list.append({'source': source,
+	                        'target': target,
+	                        'template': template,
+	                        'file-head': '',
+	                        'file-prod': '',
+	                        'file-tail': '',
+	                        'enum-prod': '',
+	                        'value-head': '',
+	                        'value-prod': '',
+	                        'value-tail': '',
+	                        'comments': comments})
+
+@taskgen_method
+def add_enums(self, source='', target='',
+              file_head='', file_prod='', file_tail='', enum_prod='',
+              value_head='', value_prod='', value_tail='', comments=''):
+	"""
+	Adds a file to the list of enum files to process. Stores them in the attribute *enums_list*.
+
+	:param source: enum file to process
+	:type source: string
+	:param target: target file
+	:type target: string
+	:param file_head: unused
+	:param file_prod: unused
+	:param file_tail: unused
+	:param enum_prod: unused
+	:param value_head: unused
+	:param value_prod: unused
+	:param value_tail: unused
+	:param comments: comments
+	:type comments: string
+	"""
+	if not hasattr(self, 'enums_list'):
+		self.enums_list = []
+	self.meths.append('process_enums')
+	self.enums_list.append({'source': source,
+	                        'template': '',
+	                        'target': target,
+	                        'file-head': file_head,
+	                        'file-prod': file_prod,
+	                        'file-tail': file_tail,
+	                        'enum-prod': enum_prod,
+	                        'value-head': value_head,
+	                        'value-prod': value_prod,
+	                        'value-tail': value_tail,
+	                        'comments': comments})
+
+@before_method('process_source')
+def process_enums(self):
+	"""
+	Processes the enum files stored in the attribute *enum_list* to create :py:class:`waflib.Tools.glib2.glib_mkenums` instances.
+	"""
+	for enum in getattr(self, 'enums_list', []):
+		task = self.create_task('glib_mkenums')
+		env = task.env
+
+		inputs = []
+
+		# process the source
+		source_list = self.to_list(enum['source'])
+		if not source_list:
+			raise Errors.WafError('missing source ' + str(enum))
+		source_list = [self.path.find_resource(k) for k in source_list]
+		inputs += source_list
+		env.GLIB_MKENUMS_SOURCE = [k.abspath() for k in source_list]
+
+		# find the target
+		if not enum['target']:
+			raise Errors.WafError('missing target ' + str(enum))
+		tgt_node = self.path.find_or_declare(enum['target'])
+		if tgt_node.name.endswith('.c'):
+			self.source.append(tgt_node)
+		env.GLIB_MKENUMS_TARGET = tgt_node.abspath()
+
+
+		options = []
+
+		if enum['template']: # template, if provided
+			template_node = self.path.find_resource(enum['template'])
+			options.append('--template %s' % (template_node.abspath()))
+			inputs.append(template_node)
+		params = {'file-head' : '--fhead',
+		           'file-prod' : '--fprod',
+		           'file-tail' : '--ftail',
+		           'enum-prod' : '--eprod',
+		           'value-head' : '--vhead',
+		           'value-prod' : '--vprod',
+		           'value-tail' : '--vtail',
+		           'comments': '--comments'}
+		for param, option in params.items():
+			if enum[param]:
+				options.append('%s %r' % (option, enum[param]))
+
+		env.GLIB_MKENUMS_OPTIONS = ' '.join(options)
+
+		# update the task instance
+		task.set_inputs(inputs)
+		task.set_outputs(tgt_node)
+
+class glib_mkenums(Task.Task):
+	"""
+	Processes enum files
+	"""
+	run_str = '${GLIB_MKENUMS} ${GLIB_MKENUMS_OPTIONS} ${GLIB_MKENUMS_SOURCE} > ${GLIB_MKENUMS_TARGET}'
+	color   = 'PINK'
+	ext_out = ['.h']
+
+######################################### gsettings
+
+@taskgen_method
+def add_settings_schemas(self, filename_list):
+	"""
+	Adds settings files to process to *settings_schema_files*
+
+	:param filename_list: files
+	:type filename_list: list of string
+	"""
+	if not hasattr(self, 'settings_schema_files'):
+		self.settings_schema_files = []
+
+	if not isinstance(filename_list, list):
+		filename_list = [filename_list]
+
+	self.settings_schema_files.extend(filename_list)
+
+@taskgen_method
+def add_settings_enums(self, namespace, filename_list):
+	"""
+	Called only once by task generator to set the enums namespace.
+
+	:param namespace: namespace
+	:type namespace: string
+	:param filename_list: enum files to process
+	:type filename_list: file list
+	"""
+	if hasattr(self, 'settings_enum_namespace'):
+		raise Errors.WafError("Tried to add gsettings enums to %r more than once" % self.name)
+	self.settings_enum_namespace = namespace
+
+	if not isinstance(filename_list, list):
+		filename_list = [filename_list]
+	self.settings_enum_files = filename_list
+
+@feature('glib2')
+def process_settings(self):
+	"""
+	Processes the schema files in *settings_schema_files* to create :py:class:`waflib.Tools.glib2.glib_mkenums` instances. The
+	same files are validated through :py:class:`waflib.Tools.glib2.glib_validate_schema` tasks.
+
+	"""
+	enums_tgt_node = []
+	install_files = []
+
+	settings_schema_files = getattr(self, 'settings_schema_files', [])
+	if settings_schema_files and not self.env.GLIB_COMPILE_SCHEMAS:
+		raise Errors.WafError ("Unable to process GSettings schemas - glib-compile-schemas was not found during configure")
+
+	# 1. process gsettings_enum_files (generate .enums.xml)
+	#
+	if hasattr(self, 'settings_enum_files'):
+		enums_task = self.create_task('glib_mkenums')
+
+		source_list = self.settings_enum_files
+		source_list = [self.path.find_resource(k) for k in source_list]
+		enums_task.set_inputs(source_list)
+		enums_task.env.GLIB_MKENUMS_SOURCE = [k.abspath() for k in source_list]
+
+		target = self.settings_enum_namespace + '.enums.xml'
+		tgt_node = self.path.find_or_declare(target)
+		enums_task.set_outputs(tgt_node)
+		enums_task.env.GLIB_MKENUMS_TARGET = tgt_node.abspath()
+		enums_tgt_node = [tgt_node]
+
+		install_files.append(tgt_node)
+
+		options = '--comments "<!-- @comment@ -->" --fhead "<schemalist>" --vhead "  <@type@ id=\\"%s.@EnumName@\\">" --vprod "    <value nick=\\"@valuenick@\\" value=\\"@valuenum@\\"/>" --vtail "  </@type@>" --ftail "</schemalist>" ' % (self.settings_enum_namespace)
+		enums_task.env.GLIB_MKENUMS_OPTIONS = options
+
+	# 2. process gsettings_schema_files (validate .gschema.xml files)
+	#
+	for schema in settings_schema_files:
+		schema_task = self.create_task ('glib_validate_schema')
+
+		schema_node = self.path.find_resource(schema)
+		if not schema_node:
+			raise Errors.WafError("Cannot find the schema file %r" % schema)
+		install_files.append(schema_node)
+		source_list = enums_tgt_node + [schema_node]
+
+		schema_task.set_inputs (source_list)
+		schema_task.env.GLIB_COMPILE_SCHEMAS_OPTIONS = [("--schema-file=" + k.abspath()) for k in source_list]
+
+		target_node = schema_node.change_ext('.xml.valid')
+		schema_task.set_outputs (target_node)
+		schema_task.env.GLIB_VALIDATE_SCHEMA_OUTPUT = target_node.abspath()
+
+	# 3. schemas install task
+	def compile_schemas_callback(bld):
+		if not bld.is_install:
+			return
+		compile_schemas = Utils.to_list(bld.env.GLIB_COMPILE_SCHEMAS)
+		destdir = Options.options.destdir
+		paths = bld._compile_schemas_registered
+		if destdir:
+			paths = (os.path.join(destdir, path.lstrip(os.sep)) for path in paths)
+		for path in paths:
+			Logs.pprint('YELLOW', 'Updating GSettings schema cache %r' % path)
+			if self.bld.exec_command(compile_schemas + [path]):
+				Logs.warn('Could not update GSettings schema cache %r' % path)
+
+	if self.bld.is_install:
+		schemadir = self.env.GSETTINGSSCHEMADIR
+		if not schemadir:
+			raise Errors.WafError ('GSETTINGSSCHEMADIR not defined (should have been set up automatically during configure)')
+
+		if install_files:
+			self.add_install_files(install_to=schemadir, install_from=install_files)
+			registered_schemas = getattr(self.bld, '_compile_schemas_registered', None)
+			if not registered_schemas:
+				registered_schemas = self.bld._compile_schemas_registered = set()
+				self.bld.add_post_fun(compile_schemas_callback)
+			registered_schemas.add(schemadir)
+
+class glib_validate_schema(Task.Task):
+	"""
+	Validates schema files
+	"""
+	run_str = 'rm -f ${GLIB_VALIDATE_SCHEMA_OUTPUT} && ${GLIB_COMPILE_SCHEMAS} --dry-run ${GLIB_COMPILE_SCHEMAS_OPTIONS} && touch ${GLIB_VALIDATE_SCHEMA_OUTPUT}'
+	color   = 'PINK'
+
+################## gresource
+
+@extension('.gresource.xml')
+def process_gresource_source(self, node):
+	"""
+	Creates tasks that turn ``.gresource.xml`` files to C code
+	"""
+	if not self.env.GLIB_COMPILE_RESOURCES:
+		raise Errors.WafError ("Unable to process GResource file - glib-compile-resources was not found during configure")
+
+	if 'gresource' in self.features:
+		return
+
+	h_node = node.change_ext('_xml.h')
+	c_node = node.change_ext('_xml.c')
+	self.create_task('glib_gresource_source', node, [h_node, c_node])
+	self.source.append(c_node)
+
+@feature('gresource')
+def process_gresource_bundle(self):
+	"""
+	Creates tasks to turn ``.gresource`` files from ``.gresource.xml`` files::
+
+		def build(bld):
+			bld(
+				features='gresource',
+				source=['resources1.gresource.xml', 'resources2.gresource.xml'],
+				install_path='${LIBDIR}/${PACKAGE}'
+			)
+
+	:param source: XML files to process
+	:type source: list of string
+	:param install_path: installation path
+	:type install_path: string
+	"""
+	for i in self.to_list(self.source):
+		node = self.path.find_resource(i)
+
+		task = self.create_task('glib_gresource_bundle', node, node.change_ext(''))
+		inst_to = getattr(self, 'install_path', None)
+		if inst_to:
+			self.add_install_files(install_to=inst_to, install_from=task.outputs)
+
+class glib_gresource_base(Task.Task):
+	"""
+	Base class for gresource based tasks
+	"""
+	color    = 'BLUE'
+	base_cmd = '${GLIB_COMPILE_RESOURCES} --sourcedir=${SRC[0].parent.srcpath()} --sourcedir=${SRC[0].bld_dir()}'
+
+	def scan(self):
+		"""
+		Scans gresource dependencies through ``glib-compile-resources --generate-dependencies command``
+		"""
+		bld = self.generator.bld
+		kw = {}
+		kw['cwd'] = self.get_cwd()
+		kw['quiet'] = Context.BOTH
+
+		cmd = Utils.subst_vars('${GLIB_COMPILE_RESOURCES} --sourcedir=%s --sourcedir=%s --generate-dependencies %s' % (
+			self.inputs[0].parent.srcpath(),
+			self.inputs[0].bld_dir(),
+			self.inputs[0].bldpath()
+		), self.env)
+
+		output = bld.cmd_and_log(cmd, **kw)
+
+		nodes = []
+		names = []
+		for dep in output.splitlines():
+			if dep:
+				node = bld.bldnode.find_node(dep)
+				if node:
+					nodes.append(node)
+				else:
+					names.append(dep)
+
+		return (nodes, names)
+
+class glib_gresource_source(glib_gresource_base):
+	"""
+	Task to generate C source code (.h and .c files) from a gresource.xml file
+	"""
+	vars    = ['GLIB_COMPILE_RESOURCES']
+	fun_h   = Task.compile_fun_shell(glib_gresource_base.base_cmd + ' --target=${TGT[0].abspath()} --generate-header ${SRC}')
+	fun_c   = Task.compile_fun_shell(glib_gresource_base.base_cmd + ' --target=${TGT[1].abspath()} --generate-source ${SRC}')
+	ext_out = ['.h']
+
+	def run(self):
+		return self.fun_h[0](self) or self.fun_c[0](self)
+
+class glib_gresource_bundle(glib_gresource_base):
+	"""
+	Task to generate a .gresource binary file from a gresource.xml file
+	"""
+	run_str = glib_gresource_base.base_cmd + ' --target=${TGT} ${SRC}'
+	shell   = True # temporary workaround for #795
+
+@conf
+def find_glib_genmarshal(conf):
+	conf.find_program('glib-genmarshal', var='GLIB_GENMARSHAL')
+
+@conf
+def find_glib_mkenums(conf):
+	if not conf.env.PERL:
+		conf.find_program('perl', var='PERL')
+	conf.find_program('glib-mkenums', interpreter='PERL', var='GLIB_MKENUMS')
+
+@conf
+def find_glib_compile_schemas(conf):
+	# when cross-compiling, gsettings.m4 locates the program with the following:
+	#   pkg-config --variable glib_compile_schemas gio-2.0
+	conf.find_program('glib-compile-schemas', var='GLIB_COMPILE_SCHEMAS')
+
+	def getstr(varname):
+		return getattr(Options.options, varname, getattr(conf.env,varname, ''))
+
+	gsettingsschemadir = getstr('GSETTINGSSCHEMADIR')
+	if not gsettingsschemadir:
+		datadir = getstr('DATADIR')
+		if not datadir:
+			prefix = conf.env.PREFIX
+			datadir = os.path.join(prefix, 'share')
+		gsettingsschemadir = os.path.join(datadir, 'glib-2.0', 'schemas')
+
+	conf.env.GSETTINGSSCHEMADIR = gsettingsschemadir
+
+@conf
+def find_glib_compile_resources(conf):
+	conf.find_program('glib-compile-resources', var='GLIB_COMPILE_RESOURCES')
+
+def configure(conf):
+	"""
+	Finds the following programs:
+
+	* *glib-genmarshal* and set *GLIB_GENMARSHAL*
+	* *glib-mkenums* and set *GLIB_MKENUMS*
+	* *glib-compile-schemas* and set *GLIB_COMPILE_SCHEMAS* (not mandatory)
+	* *glib-compile-resources* and set *GLIB_COMPILE_RESOURCES* (not mandatory)
+	"""
+	conf.find_glib_genmarshal()
+	conf.find_glib_mkenums()
+	conf.find_glib_compile_schemas(mandatory=False)
+	conf.find_glib_compile_resources(mandatory=False)
+
+def options(opt):
+	"""
+	Adds the ``--gsettingsschemadir`` command-line option
+	"""
+	gr = opt.add_option_group('Installation directories')
+	gr.add_option('--gsettingsschemadir', help='GSettings schema location [DATADIR/glib-2.0/schemas]', default='', dest='GSETTINGSSCHEMADIR')
+
diff --git a/Tools/gnu_dirs.py b/Tools/gnu_dirs.py
new file mode 100644
index 0000000..2847071
--- /dev/null
+++ b/Tools/gnu_dirs.py
@@ -0,0 +1,131 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Ali Sabil, 2007
+
+"""
+Sets various standard variables such as INCLUDEDIR. SBINDIR and others. To use this module just call::
+
+	opt.load('gnu_dirs')
+
+and::
+
+	conf.load('gnu_dirs')
+
+Add options for the standard GNU directories, this tool will add the options
+found in autotools, and will update the environment with the following
+installation variables:
+
+============== ========================================= =======================
+Variable       Description                               Default Value
+============== ========================================= =======================
+PREFIX         installation prefix                       /usr/local
+EXEC_PREFIX    installation prefix for binaries          PREFIX
+BINDIR         user commands                             EXEC_PREFIX/bin
+SBINDIR        system binaries                           EXEC_PREFIX/sbin
+LIBEXECDIR     program-specific binaries                 EXEC_PREFIX/libexec
+SYSCONFDIR     host-specific configuration               PREFIX/etc
+SHAREDSTATEDIR architecture-independent variable data    PREFIX/com
+LOCALSTATEDIR  variable data                             PREFIX/var
+LIBDIR         object code libraries                     EXEC_PREFIX/lib
+INCLUDEDIR     header files                              PREFIX/include
+OLDINCLUDEDIR  header files for non-GCC compilers        /usr/include
+DATAROOTDIR    architecture-independent data root        PREFIX/share
+DATADIR        architecture-independent data             DATAROOTDIR
+INFODIR        GNU "info" documentation                  DATAROOTDIR/info
+LOCALEDIR      locale-dependent data                     DATAROOTDIR/locale
+MANDIR         manual pages                              DATAROOTDIR/man
+DOCDIR         documentation root                        DATAROOTDIR/doc/APPNAME
+HTMLDIR        HTML documentation                        DOCDIR
+DVIDIR         DVI documentation                         DOCDIR
+PDFDIR         PDF documentation                         DOCDIR
+PSDIR          PostScript documentation                  DOCDIR
+============== ========================================= =======================
+"""
+
+import os, re
+from waflib import Utils, Options, Context
+
+gnuopts = '''
+bindir, user commands, ${EXEC_PREFIX}/bin
+sbindir, system binaries, ${EXEC_PREFIX}/sbin
+libexecdir, program-specific binaries, ${EXEC_PREFIX}/libexec
+sysconfdir, host-specific configuration, ${PREFIX}/etc
+sharedstatedir, architecture-independent variable data, ${PREFIX}/com
+localstatedir, variable data, ${PREFIX}/var
+libdir, object code libraries, ${EXEC_PREFIX}/lib%s
+includedir, header files, ${PREFIX}/include
+oldincludedir, header files for non-GCC compilers, /usr/include
+datarootdir, architecture-independent data root, ${PREFIX}/share
+datadir, architecture-independent data, ${DATAROOTDIR}
+infodir, GNU "info" documentation, ${DATAROOTDIR}/info
+localedir, locale-dependent data, ${DATAROOTDIR}/locale
+mandir, manual pages, ${DATAROOTDIR}/man
+docdir, documentation root, ${DATAROOTDIR}/doc/${PACKAGE}
+htmldir, HTML documentation, ${DOCDIR}
+dvidir, DVI documentation, ${DOCDIR}
+pdfdir, PDF documentation, ${DOCDIR}
+psdir, PostScript documentation, ${DOCDIR}
+''' % Utils.lib64()
+
+_options = [x.split(', ') for x in gnuopts.splitlines() if x]
+
+def configure(conf):
+	"""
+	Reads the command-line options to set lots of variables in *conf.env*. The variables
+	BINDIR and LIBDIR will be overwritten.
+	"""
+	def get_param(varname, default):
+		return getattr(Options.options, varname, '') or default
+
+	env = conf.env
+	env.LIBDIR = env.BINDIR = []
+	env.EXEC_PREFIX = get_param('EXEC_PREFIX', env.PREFIX)
+	env.PACKAGE = getattr(Context.g_module, 'APPNAME', None) or env.PACKAGE
+
+	complete = False
+	iter = 0
+	while not complete and iter < len(_options) + 1:
+		iter += 1
+		complete = True
+		for name, help, default in _options:
+			name = name.upper()
+			if not env[name]:
+				try:
+					env[name] = Utils.subst_vars(get_param(name, default).replace('/', os.sep), env)
+				except TypeError:
+					complete = False
+
+	if not complete:
+		lst = [x for x, _, _ in _options if not env[x.upper()]]
+		raise conf.errors.WafError('Variable substitution failure %r' % lst)
+
+def options(opt):
+	"""
+	Adds lots of command-line options, for example::
+
+		--exec-prefix: EXEC_PREFIX
+	"""
+	inst_dir = opt.add_option_group('Installation prefix',
+'By default, "waf install" will put the files in\
+ "/usr/local/bin", "/usr/local/lib" etc. An installation prefix other\
+ than "/usr/local" can be given using "--prefix", for example "--prefix=$HOME"')
+
+	for k in ('--prefix', '--destdir'):
+		option = opt.parser.get_option(k)
+		if option:
+			opt.parser.remove_option(k)
+			inst_dir.add_option(option)
+
+	inst_dir.add_option('--exec-prefix',
+		help = 'installation prefix for binaries [PREFIX]',
+		default = '',
+		dest = 'EXEC_PREFIX')
+
+	dirs_options = opt.add_option_group('Installation directories')
+
+	for name, help, default in _options:
+		option_name = '--' + name
+		str_default = default
+		str_help = '%s [%s]' % (help, re.sub(r'\$\{([^}]+)\}', r'\1', str_default))
+		dirs_options.add_option(option_name, help=str_help, default='', dest=name.upper())
+
diff --git a/Tools/gxx.py b/Tools/gxx.py
new file mode 100644
index 0000000..22c5d26
--- /dev/null
+++ b/Tools/gxx.py
@@ -0,0 +1,157 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+# Ralf Habacker, 2006 (rh)
+# Yinon Ehrlich, 2009
+
+"""
+g++/llvm detection.
+"""
+
+from waflib.Tools import ccroot, ar
+from waflib.Configure import conf
+
+@conf
+def find_gxx(conf):
+	"""
+	Finds the program g++, and if present, try to detect its version number
+	"""
+	cxx = conf.find_program(['g++', 'c++'], var='CXX')
+	conf.get_cc_version(cxx, gcc=True)
+	conf.env.CXX_NAME = 'gcc'
+
+@conf
+def gxx_common_flags(conf):
+	"""
+	Common flags for g++ on nearly all platforms
+	"""
+	v = conf.env
+
+	v.CXX_SRC_F           = []
+	v.CXX_TGT_F           = ['-c', '-o']
+
+	if not v.LINK_CXX:
+		v.LINK_CXX = v.CXX
+
+	v.CXXLNK_SRC_F        = []
+	v.CXXLNK_TGT_F        = ['-o']
+	v.CPPPATH_ST          = '-I%s'
+	v.DEFINES_ST          = '-D%s'
+
+	v.LIB_ST              = '-l%s' # template for adding libs
+	v.LIBPATH_ST          = '-L%s' # template for adding libpaths
+	v.STLIB_ST            = '-l%s'
+	v.STLIBPATH_ST        = '-L%s'
+	v.RPATH_ST            = '-Wl,-rpath,%s'
+
+	v.SONAME_ST           = '-Wl,-h,%s'
+	v.SHLIB_MARKER        = '-Wl,-Bdynamic'
+	v.STLIB_MARKER        = '-Wl,-Bstatic'
+
+	v.cxxprogram_PATTERN  = '%s'
+
+	v.CXXFLAGS_cxxshlib   = ['-fPIC']
+	v.LINKFLAGS_cxxshlib  = ['-shared']
+	v.cxxshlib_PATTERN    = 'lib%s.so'
+
+	v.LINKFLAGS_cxxstlib  = ['-Wl,-Bstatic']
+	v.cxxstlib_PATTERN    = 'lib%s.a'
+
+	v.LINKFLAGS_MACBUNDLE = ['-bundle', '-undefined', 'dynamic_lookup']
+	v.CXXFLAGS_MACBUNDLE  = ['-fPIC']
+	v.macbundle_PATTERN   = '%s.bundle'
+
+@conf
+def gxx_modifier_win32(conf):
+	"""Configuration flags for executing gcc on Windows"""
+	v = conf.env
+	v.cxxprogram_PATTERN  = '%s.exe'
+
+	v.cxxshlib_PATTERN    = '%s.dll'
+	v.implib_PATTERN      = '%s.dll.a'
+	v.IMPLIB_ST           = '-Wl,--out-implib,%s'
+
+	v.CXXFLAGS_cxxshlib   = []
+
+	# Auto-import is enabled by default even without this option,
+	# but enabling it explicitly has the nice effect of suppressing the rather boring, debug-level messages
+	# that the linker emits otherwise.
+	v.append_value('LINKFLAGS', ['-Wl,--enable-auto-import'])
+
+@conf
+def gxx_modifier_cygwin(conf):
+	"""Configuration flags for executing g++ on Cygwin"""
+	gxx_modifier_win32(conf)
+	v = conf.env
+	v.cxxshlib_PATTERN    = 'cyg%s.dll'
+	v.append_value('LINKFLAGS_cxxshlib', ['-Wl,--enable-auto-image-base'])
+	v.CXXFLAGS_cxxshlib   = []
+
+@conf
+def gxx_modifier_darwin(conf):
+	"""Configuration flags for executing g++ on MacOS"""
+	v = conf.env
+	v.CXXFLAGS_cxxshlib   = ['-fPIC']
+	v.LINKFLAGS_cxxshlib  = ['-dynamiclib']
+	v.cxxshlib_PATTERN    = 'lib%s.dylib'
+	v.FRAMEWORKPATH_ST    = '-F%s'
+	v.FRAMEWORK_ST        = ['-framework']
+	v.ARCH_ST             = ['-arch']
+
+	v.LINKFLAGS_cxxstlib  = []
+
+	v.SHLIB_MARKER        = []
+	v.STLIB_MARKER        = []
+	v.SONAME_ST           = []
+
+@conf
+def gxx_modifier_aix(conf):
+	"""Configuration flags for executing g++ on AIX"""
+	v = conf.env
+	v.LINKFLAGS_cxxprogram= ['-Wl,-brtl']
+
+	v.LINKFLAGS_cxxshlib  = ['-shared', '-Wl,-brtl,-bexpfull']
+	v.SHLIB_MARKER        = []
+
+@conf
+def gxx_modifier_hpux(conf):
+	v = conf.env
+	v.SHLIB_MARKER        = []
+	v.STLIB_MARKER        = []
+	v.CFLAGS_cxxshlib     = ['-fPIC','-DPIC']
+	v.cxxshlib_PATTERN    = 'lib%s.sl'
+
+@conf
+def gxx_modifier_openbsd(conf):
+	conf.env.SONAME_ST = []
+
+@conf
+def gcc_modifier_osf1V(conf):
+	v = conf.env
+	v.SHLIB_MARKER        = []
+	v.STLIB_MARKER        = []
+	v.SONAME_ST           = []
+
+@conf
+def gxx_modifier_platform(conf):
+	"""Execute platform-specific functions based on *gxx_modifier_+NAME*"""
+	# * set configurations specific for a platform.
+	# * the destination platform is detected automatically by looking at the macros the compiler predefines,
+	#   and if it's not recognised, it fallbacks to sys.platform.
+	gxx_modifier_func = getattr(conf, 'gxx_modifier_' + conf.env.DEST_OS, None)
+	if gxx_modifier_func:
+		gxx_modifier_func()
+
+def configure(conf):
+	"""
+	Configuration for g++
+	"""
+	conf.find_gxx()
+	conf.find_ar()
+	conf.gxx_common_flags()
+	conf.gxx_modifier_platform()
+	conf.cxx_load_tools()
+	conf.cxx_add_flags()
+	conf.link_add_flags()
+	conf.check_gcc_o_space('cxx')
+
diff --git a/Tools/icc.py b/Tools/icc.py
new file mode 100644
index 0000000..b6492c8
--- /dev/null
+++ b/Tools/icc.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Stian Selnes 2008
+# Thomas Nagy 2009-2018 (ita)
+
+"""
+Detects the Intel C compiler
+"""
+
+import sys
+from waflib.Tools import ccroot, ar, gcc
+from waflib.Configure import conf
+
+@conf
+def find_icc(conf):
+	"""
+	Finds the program icc and execute it to ensure it really is icc
+	"""
+	cc = conf.find_program(['icc', 'ICL'], var='CC')
+	conf.get_cc_version(cc, icc=True)
+	conf.env.CC_NAME = 'icc'
+
+def configure(conf):
+	conf.find_icc()
+	conf.find_ar()
+	conf.gcc_common_flags()
+	conf.gcc_modifier_platform()
+	conf.cc_load_tools()
+	conf.cc_add_flags()
+	conf.link_add_flags()
diff --git a/Tools/icpc.py b/Tools/icpc.py
new file mode 100644
index 0000000..8a6cc6c
--- /dev/null
+++ b/Tools/icpc.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy 2009-2018 (ita)
+
+"""
+Detects the Intel C++ compiler
+"""
+
+import sys
+from waflib.Tools import ccroot, ar, gxx
+from waflib.Configure import conf
+
+@conf
+def find_icpc(conf):
+	"""
+	Finds the program icpc, and execute it to ensure it really is icpc
+	"""
+	cxx = conf.find_program('icpc', var='CXX')
+	conf.get_cc_version(cxx, icc=True)
+	conf.env.CXX_NAME = 'icc'
+
+def configure(conf):
+	conf.find_icpc()
+	conf.find_ar()
+	conf.gxx_common_flags()
+	conf.gxx_modifier_platform()
+	conf.cxx_load_tools()
+	conf.cxx_add_flags()
+	conf.link_add_flags()
+
diff --git a/Tools/ifort.py b/Tools/ifort.py
new file mode 100644
index 0000000..74934f3
--- /dev/null
+++ b/Tools/ifort.py
@@ -0,0 +1,413 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# DC 2008
+# Thomas Nagy 2016-2018 (ita)
+
+import os, re, traceback
+from waflib import Utils, Logs, Errors
+from waflib.Tools import fc, fc_config, fc_scan, ar, ccroot
+from waflib.Configure import conf
+from waflib.TaskGen import after_method, feature
+
+@conf
+def find_ifort(conf):
+	fc = conf.find_program('ifort', var='FC')
+	conf.get_ifort_version(fc)
+	conf.env.FC_NAME = 'IFORT'
+
+@conf
+def ifort_modifier_win32(self):
+	v = self.env
+	v.IFORT_WIN32 = True
+	v.FCSTLIB_MARKER = ''
+	v.FCSHLIB_MARKER = ''
+
+	v.FCLIB_ST = v.FCSTLIB_ST = '%s.lib'
+	v.FCLIBPATH_ST = v.STLIBPATH_ST = '/LIBPATH:%s'
+	v.FCINCPATH_ST = '/I%s'
+	v.FCDEFINES_ST = '/D%s'
+
+	v.fcprogram_PATTERN = v.fcprogram_test_PATTERN = '%s.exe'
+	v.fcshlib_PATTERN = '%s.dll'
+	v.fcstlib_PATTERN = v.implib_PATTERN = '%s.lib'
+
+	v.FCLNK_TGT_F = '/out:'
+	v.FC_TGT_F = ['/c', '/o', '']
+	v.FCFLAGS_fcshlib = ''
+	v.LINKFLAGS_fcshlib = '/DLL'
+	v.AR_TGT_F = '/out:'
+	v.IMPLIB_ST = '/IMPLIB:%s'
+
+	v.append_value('LINKFLAGS', '/subsystem:console')
+	if v.IFORT_MANIFEST:
+		v.append_value('LINKFLAGS', ['/MANIFEST'])
+
+@conf
+def ifort_modifier_darwin(conf):
+	fc_config.fortran_modifier_darwin(conf)
+
+@conf
+def ifort_modifier_platform(conf):
+	dest_os = conf.env.DEST_OS or Utils.unversioned_sys_platform()
+	ifort_modifier_func = getattr(conf, 'ifort_modifier_' + dest_os, None)
+	if ifort_modifier_func:
+		ifort_modifier_func()
+
+@conf
+def get_ifort_version(conf, fc):
+	"""
+	Detects the compiler version and sets ``conf.env.FC_VERSION``
+	"""
+	version_re = re.compile(r"\bIntel\b.*\bVersion\s*(?P<major>\d*)\.(?P<minor>\d*)",re.I).search
+	if Utils.is_win32:
+		cmd = fc
+	else:
+		cmd = fc + ['-logo']
+
+	out, err = fc_config.getoutput(conf, cmd, stdin=False)
+	match = version_re(out) or version_re(err)
+	if not match:
+		conf.fatal('cannot determine ifort version.')
+	k = match.groupdict()
+	conf.env.FC_VERSION = (k['major'], k['minor'])
+
+def configure(conf):
+	"""
+	Detects the Intel Fortran compilers
+	"""
+	if Utils.is_win32:
+		compiler, version, path, includes, libdirs, arch = conf.detect_ifort()
+		v = conf.env
+		v.DEST_CPU = arch
+		v.PATH = path
+		v.INCLUDES = includes
+		v.LIBPATH = libdirs
+		v.MSVC_COMPILER = compiler
+		try:
+			v.MSVC_VERSION = float(version)
+		except ValueError:
+			v.MSVC_VERSION = float(version[:-3])
+
+		conf.find_ifort_win32()
+		conf.ifort_modifier_win32()
+	else:
+		conf.find_ifort()
+		conf.find_program('xiar', var='AR')
+		conf.find_ar()
+		conf.fc_flags()
+		conf.fc_add_flags()
+		conf.ifort_modifier_platform()
+
+
+all_ifort_platforms = [ ('intel64', 'amd64'), ('em64t', 'amd64'), ('ia32', 'x86'), ('Itanium', 'ia64')]
+"""List of icl platforms"""
+
+@conf
+def gather_ifort_versions(conf, versions):
+	"""
+	List compiler versions by looking up registry keys
+	"""
+	version_pattern = re.compile('^...?.?\....?.?')
+	try:
+		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Intel\\Compilers\\Fortran')
+	except OSError:
+		try:
+			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Intel\\Compilers\\Fortran')
+		except OSError:
+			return
+	index = 0
+	while 1:
+		try:
+			version = Utils.winreg.EnumKey(all_versions, index)
+		except OSError:
+			break
+		index += 1
+		if not version_pattern.match(version):
+			continue
+		targets = {}
+		for target,arch in all_ifort_platforms:
+			if target=='intel64':
+				targetDir='EM64T_NATIVE'
+			else:
+				targetDir=target
+			try:
+				Utils.winreg.OpenKey(all_versions,version+'\\'+targetDir)
+				icl_version=Utils.winreg.OpenKey(all_versions,version)
+				path,type=Utils.winreg.QueryValueEx(icl_version,'ProductDir')
+			except OSError:
+				pass
+			else:
+				batch_file=os.path.join(path,'bin','ifortvars.bat')
+				if os.path.isfile(batch_file):
+					targets[target] = target_compiler(conf, 'intel', arch, version, target, batch_file)
+
+		for target,arch in all_ifort_platforms:
+			try:
+				icl_version = Utils.winreg.OpenKey(all_versions, version+'\\'+target)
+				path,type = Utils.winreg.QueryValueEx(icl_version,'ProductDir')
+			except OSError:
+				continue
+			else:
+				batch_file=os.path.join(path,'bin','ifortvars.bat')
+				if os.path.isfile(batch_file):
+					targets[target] = target_compiler(conf, 'intel', arch, version, target, batch_file)
+		major = version[0:2]
+		versions['intel ' + major] = targets
+
+@conf
+def setup_ifort(conf, versiondict):
+	"""
+	Checks installed compilers and targets and returns the first combination from the user's
+	options, env, or the global supported lists that checks.
+
+	:param versiondict: dict(platform -> dict(architecture -> configuration))
+	:type versiondict: dict(string -> dict(string -> target_compiler)
+	:return: the compiler, revision, path, include dirs, library paths and target architecture
+	:rtype: tuple of strings
+	"""
+	platforms = Utils.to_list(conf.env.MSVC_TARGETS) or [i for i,j in all_ifort_platforms]
+	desired_versions = conf.env.MSVC_VERSIONS or list(reversed(list(versiondict.keys())))
+	for version in desired_versions:
+		try:
+			targets = versiondict[version]
+		except KeyError:
+			continue
+		for arch in platforms:
+			try:
+				cfg = targets[arch]
+			except KeyError:
+				continue
+			cfg.evaluate()
+			if cfg.is_valid:
+				compiler,revision = version.rsplit(' ', 1)
+				return compiler,revision,cfg.bindirs,cfg.incdirs,cfg.libdirs,cfg.cpu
+	conf.fatal('ifort: Impossible to find a valid architecture for building %r - %r' % (desired_versions, list(versiondict.keys())))
+
+@conf
+def get_ifort_version_win32(conf, compiler, version, target, vcvars):
+	# FIXME hack
+	try:
+		conf.msvc_cnt += 1
+	except AttributeError:
+		conf.msvc_cnt = 1
+	batfile = conf.bldnode.make_node('waf-print-msvc-%d.bat' % conf.msvc_cnt)
+	batfile.write("""@echo off
+set INCLUDE=
+set LIB=
+call "%s" %s
+echo PATH=%%PATH%%
+echo INCLUDE=%%INCLUDE%%
+echo LIB=%%LIB%%;%%LIBPATH%%
+""" % (vcvars,target))
+	sout = conf.cmd_and_log(['cmd.exe', '/E:on', '/V:on', '/C', batfile.abspath()])
+	batfile.delete()
+	lines = sout.splitlines()
+
+	if not lines[0]:
+		lines.pop(0)
+
+	MSVC_PATH = MSVC_INCDIR = MSVC_LIBDIR = None
+	for line in lines:
+		if line.startswith('PATH='):
+			path = line[5:]
+			MSVC_PATH = path.split(';')
+		elif line.startswith('INCLUDE='):
+			MSVC_INCDIR = [i for i in line[8:].split(';') if i]
+		elif line.startswith('LIB='):
+			MSVC_LIBDIR = [i for i in line[4:].split(';') if i]
+	if None in (MSVC_PATH, MSVC_INCDIR, MSVC_LIBDIR):
+		conf.fatal('ifort: Could not find a valid architecture for building (get_ifort_version_win32)')
+
+	# Check if the compiler is usable at all.
+	# The detection may return 64-bit versions even on 32-bit systems, and these would fail to run.
+	env = dict(os.environ)
+	env.update(PATH = path)
+	compiler_name, linker_name, lib_name = _get_prog_names(conf, compiler)
+	fc = conf.find_program(compiler_name, path_list=MSVC_PATH)
+
+	# delete CL if exists. because it could contain parameters which can change cl's behaviour rather catastrophically.
+	if 'CL' in env:
+		del(env['CL'])
+
+	try:
+		conf.cmd_and_log(fc + ['/help'], env=env)
+	except UnicodeError:
+		st = traceback.format_exc()
+		if conf.logger:
+			conf.logger.error(st)
+		conf.fatal('ifort: Unicode error - check the code page?')
+	except Exception as e:
+		Logs.debug('ifort: get_ifort_version: %r %r %r -> failure %s', compiler, version, target, str(e))
+		conf.fatal('ifort: cannot run the compiler in get_ifort_version (run with -v to display errors)')
+	else:
+		Logs.debug('ifort: get_ifort_version: %r %r %r -> OK', compiler, version, target)
+	finally:
+		conf.env[compiler_name] = ''
+
+	return (MSVC_PATH, MSVC_INCDIR, MSVC_LIBDIR)
+
+class target_compiler(object):
+	"""
+	Wraps a compiler configuration; call evaluate() to determine
+	whether the configuration is usable.
+	"""
+	def __init__(self, ctx, compiler, cpu, version, bat_target, bat, callback=None):
+		"""
+		:param ctx: configuration context to use to eventually get the version environment
+		:param compiler: compiler name
+		:param cpu: target cpu
+		:param version: compiler version number
+		:param bat_target: ?
+		:param bat: path to the batch file to run
+		:param callback: optional function to take the realized environment variables tup and map it (e.g. to combine other constant paths)
+		"""
+		self.conf = ctx
+		self.name = None
+		self.is_valid = False
+		self.is_done = False
+
+		self.compiler = compiler
+		self.cpu = cpu
+		self.version = version
+		self.bat_target = bat_target
+		self.bat = bat
+		self.callback = callback
+
+	def evaluate(self):
+		if self.is_done:
+			return
+		self.is_done = True
+		try:
+			vs = self.conf.get_ifort_version_win32(self.compiler, self.version, self.bat_target, self.bat)
+		except Errors.ConfigurationError:
+			self.is_valid = False
+			return
+		if self.callback:
+			vs = self.callback(self, vs)
+		self.is_valid = True
+		(self.bindirs, self.incdirs, self.libdirs) = vs
+
+	def __str__(self):
+		return str((self.bindirs, self.incdirs, self.libdirs))
+
+	def __repr__(self):
+		return repr((self.bindirs, self.incdirs, self.libdirs))
+
+@conf
+def detect_ifort(self):
+	return self.setup_ifort(self.get_ifort_versions(False))
+
+@conf
+def get_ifort_versions(self, eval_and_save=True):
+	"""
+	:return: platforms to compiler configurations
+	:rtype: dict
+	"""
+	dct = {}
+	self.gather_ifort_versions(dct)
+	return dct
+
+def _get_prog_names(self, compiler):
+	if compiler=='intel':
+		compiler_name = 'ifort'
+		linker_name = 'XILINK'
+		lib_name = 'XILIB'
+	else:
+		# assumes CL.exe
+		compiler_name = 'CL'
+		linker_name = 'LINK'
+		lib_name = 'LIB'
+	return compiler_name, linker_name, lib_name
+
+@conf
+def find_ifort_win32(conf):
+	# the autodetection is supposed to be performed before entering in this method
+	v = conf.env
+	path = v.PATH
+	compiler = v.MSVC_COMPILER
+	version = v.MSVC_VERSION
+
+	compiler_name, linker_name, lib_name = _get_prog_names(conf, compiler)
+	v.IFORT_MANIFEST = (compiler == 'intel' and version >= 11)
+
+	# compiler
+	fc = conf.find_program(compiler_name, var='FC', path_list=path)
+
+	# before setting anything, check if the compiler is really intel fortran
+	env = dict(conf.environ)
+	if path:
+		env.update(PATH = ';'.join(path))
+	if not conf.cmd_and_log(fc + ['/nologo', '/help'], env=env):
+		conf.fatal('not intel fortran compiler could not be identified')
+
+	v.FC_NAME = 'IFORT'
+
+	if not v.LINK_FC:
+		conf.find_program(linker_name, var='LINK_FC', path_list=path, mandatory=True)
+
+	if not v.AR:
+		conf.find_program(lib_name, path_list=path, var='AR', mandatory=True)
+		v.ARFLAGS = ['/nologo']
+
+	# manifest tool. Not required for VS 2003 and below. Must have for VS 2005 and later
+	if v.IFORT_MANIFEST:
+		conf.find_program('MT', path_list=path, var='MT')
+		v.MTFLAGS = ['/nologo']
+
+	try:
+		conf.load('winres')
+	except Errors.WafError:
+		Logs.warn('Resource compiler not found. Compiling resource file is disabled')
+
+#######################################################################################################
+##### conf above, build below
+
+@after_method('apply_link')
+@feature('fc')
+def apply_flags_ifort(self):
+	"""
+	Adds additional flags implied by msvc, such as subsystems and pdb files::
+
+		def build(bld):
+			bld.stlib(source='main.c', target='bar', subsystem='gruik')
+	"""
+	if not self.env.IFORT_WIN32 or not getattr(self, 'link_task', None):
+		return
+
+	is_static = isinstance(self.link_task, ccroot.stlink_task)
+
+	subsystem = getattr(self, 'subsystem', '')
+	if subsystem:
+		subsystem = '/subsystem:%s' % subsystem
+		flags = is_static and 'ARFLAGS' or 'LINKFLAGS'
+		self.env.append_value(flags, subsystem)
+
+	if not is_static:
+		for f in self.env.LINKFLAGS:
+			d = f.lower()
+			if d[1:] == 'debug':
+				pdbnode = self.link_task.outputs[0].change_ext('.pdb')
+				self.link_task.outputs.append(pdbnode)
+
+				if getattr(self, 'install_task', None):
+					self.pdb_install_task = self.add_install_files(install_to=self.install_task.install_to, install_from=pdbnode)
+
+				break
+
+@feature('fcprogram', 'fcshlib', 'fcprogram_test')
+@after_method('apply_link')
+def apply_manifest_ifort(self):
+	"""
+	Enables manifest embedding in Fortran DLLs when using ifort on Windows
+	See: http://msdn2.microsoft.com/en-us/library/ms235542(VS.80).aspx
+	"""
+	if self.env.IFORT_WIN32 and getattr(self, 'link_task', None):
+		# it seems ifort.exe cannot be called for linking
+		self.link_task.env.FC = self.env.LINK_FC
+
+	if self.env.IFORT_WIN32 and self.env.IFORT_MANIFEST and getattr(self, 'link_task', None):
+		out_node = self.link_task.outputs[0]
+		man_node = out_node.parent.find_or_declare(out_node.name + '.manifest')
+		self.link_task.outputs.append(man_node)
+		self.env.DO_MANIFEST = True
+
diff --git a/Tools/intltool.py b/Tools/intltool.py
new file mode 100644
index 0000000..af95ba8
--- /dev/null
+++ b/Tools/intltool.py
@@ -0,0 +1,231 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+Support for translation tools such as msgfmt and intltool
+
+Usage::
+
+	def configure(conf):
+		conf.load('gnu_dirs intltool')
+
+	def build(bld):
+		# process the .po files into .gmo files, and install them in LOCALEDIR
+		bld(features='intltool_po', appname='myapp', podir='po', install_path="${LOCALEDIR}")
+
+		# process an input file, substituting the translations from the po dir
+		bld(
+			features  = "intltool_in",
+			podir     = "../po",
+			style     = "desktop",
+			flags     = ["-u"],
+			source    = 'kupfer.desktop.in',
+			install_path = "${DATADIR}/applications",
+		)
+
+Usage of the :py:mod:`waflib.Tools.gnu_dirs` is recommended, but not obligatory.
+"""
+
+from __future__ import with_statement
+
+import os, re
+from waflib import Context, Task, Utils, Logs
+import waflib.Tools.ccroot
+from waflib.TaskGen import feature, before_method, taskgen_method
+from waflib.Logs import error
+from waflib.Configure import conf
+
+_style_flags = {
+	'ba': '-b',
+	'desktop': '-d',
+	'keys': '-k',
+	'quoted': '--quoted-style',
+	'quotedxml': '--quotedxml-style',
+	'rfc822deb': '-r',
+	'schemas': '-s',
+	'xml': '-x',
+}
+
+@taskgen_method
+def ensure_localedir(self):
+	"""
+	Expands LOCALEDIR from DATAROOTDIR/locale if possible, or falls back to PREFIX/share/locale
+	"""
+	# use the tool gnu_dirs to provide options to define this
+	if not self.env.LOCALEDIR:
+		if self.env.DATAROOTDIR:
+			self.env.LOCALEDIR = os.path.join(self.env.DATAROOTDIR, 'locale')
+		else:
+			self.env.LOCALEDIR = os.path.join(self.env.PREFIX, 'share', 'locale')
+
+@before_method('process_source')
+@feature('intltool_in')
+def apply_intltool_in_f(self):
+	"""
+	Creates tasks to translate files by intltool-merge::
+
+		def build(bld):
+			bld(
+				features  = "intltool_in",
+				podir     = "../po",
+				style     = "desktop",
+				flags     = ["-u"],
+				source    = 'kupfer.desktop.in',
+				install_path = "${DATADIR}/applications",
+			)
+
+	:param podir: location of the .po files
+	:type podir: string
+	:param source: source files to process
+	:type source: list of string
+	:param style: the intltool-merge mode of operation, can be one of the following values:
+	  ``ba``, ``desktop``, ``keys``, ``quoted``, ``quotedxml``, ``rfc822deb``, ``schemas`` and ``xml``.
+	  See the ``intltool-merge`` man page for more information about supported modes of operation.
+	:type style: string
+	:param flags: compilation flags ("-quc" by default)
+	:type flags: list of string
+	:param install_path: installation path
+	:type install_path: string
+	"""
+	try:
+		self.meths.remove('process_source')
+	except ValueError:
+		pass
+
+	self.ensure_localedir()
+
+	podir = getattr(self, 'podir', '.')
+	podirnode = self.path.find_dir(podir)
+	if not podirnode:
+		error("could not find the podir %r" % podir)
+		return
+
+	cache = getattr(self, 'intlcache', '.intlcache')
+	self.env.INTLCACHE = [os.path.join(str(self.path.get_bld()), podir, cache)]
+	self.env.INTLPODIR = podirnode.bldpath()
+	self.env.append_value('INTLFLAGS', getattr(self, 'flags', self.env.INTLFLAGS_DEFAULT))
+
+	if '-c' in self.env.INTLFLAGS:
+		self.bld.fatal('Redundant -c flag in intltool task %r' % self)
+
+	style = getattr(self, 'style', None)
+	if style:
+		try:
+			style_flag = _style_flags[style]
+		except KeyError:
+			self.bld.fatal('intltool_in style "%s" is not valid' % style)
+
+		self.env.append_unique('INTLFLAGS', [style_flag])
+
+	for i in self.to_list(self.source):
+		node = self.path.find_resource(i)
+
+		task = self.create_task('intltool', node, node.change_ext(''))
+		inst = getattr(self, 'install_path', None)
+		if inst:
+			self.add_install_files(install_to=inst, install_from=task.outputs)
+
+@feature('intltool_po')
+def apply_intltool_po(self):
+	"""
+	Creates tasks to process po files::
+
+		def build(bld):
+			bld(features='intltool_po', appname='myapp', podir='po', install_path="${LOCALEDIR}")
+
+	The relevant task generator arguments are:
+
+	:param podir: directory of the .po files
+	:type podir: string
+	:param appname: name of the application
+	:type appname: string
+	:param install_path: installation directory
+	:type install_path: string
+
+	The file LINGUAS must be present in the directory pointed by *podir* and list the translation files to process.
+	"""
+	try:
+		self.meths.remove('process_source')
+	except ValueError:
+		pass
+
+	self.ensure_localedir()
+
+	appname = getattr(self, 'appname', getattr(Context.g_module, Context.APPNAME, 'set_your_app_name'))
+	podir = getattr(self, 'podir', '.')
+	inst = getattr(self, 'install_path', '${LOCALEDIR}')
+
+	linguas = self.path.find_node(os.path.join(podir, 'LINGUAS'))
+	if linguas:
+		# scan LINGUAS file for locales to process
+		with open(linguas.abspath()) as f:
+			langs = []
+			for line in f.readlines():
+				# ignore lines containing comments
+				if not line.startswith('#'):
+					langs += line.split()
+		re_linguas = re.compile('[-a-zA-Z_@.]+')
+		for lang in langs:
+			# Make sure that we only process lines which contain locales
+			if re_linguas.match(lang):
+				node = self.path.find_resource(os.path.join(podir, re_linguas.match(lang).group() + '.po'))
+				task = self.create_task('po', node, node.change_ext('.mo'))
+
+				if inst:
+					filename = task.outputs[0].name
+					(langname, ext) = os.path.splitext(filename)
+					inst_file = inst + os.sep + langname + os.sep + 'LC_MESSAGES' + os.sep + appname + '.mo'
+					self.add_install_as(install_to=inst_file, install_from=task.outputs[0],
+						chmod=getattr(self, 'chmod', Utils.O644))
+
+	else:
+		Logs.pprint('RED', "Error no LINGUAS file found in po directory")
+
+class po(Task.Task):
+	"""
+	Compiles .po files into .gmo files
+	"""
+	run_str = '${MSGFMT} -o ${TGT} ${SRC}'
+	color   = 'BLUE'
+
+class intltool(Task.Task):
+	"""
+	Calls intltool-merge to update translation files
+	"""
+	run_str = '${INTLTOOL} ${INTLFLAGS} ${INTLCACHE_ST:INTLCACHE} ${INTLPODIR} ${SRC} ${TGT}'
+	color   = 'BLUE'
+
+@conf
+def find_msgfmt(conf):
+	"""
+	Detects msgfmt and sets the ``MSGFMT`` variable
+	"""
+	conf.find_program('msgfmt', var='MSGFMT')
+
+@conf
+def find_intltool_merge(conf):
+	"""
+	Detects intltool-merge
+	"""
+	if not conf.env.PERL:
+		conf.find_program('perl', var='PERL')
+	conf.env.INTLCACHE_ST = '--cache=%s'
+	conf.env.INTLFLAGS_DEFAULT = ['-q', '-u']
+	conf.find_program('intltool-merge', interpreter='PERL', var='INTLTOOL')
+
+def configure(conf):
+	"""
+	Detects the program *msgfmt* and set *conf.env.MSGFMT*.
+	Detects the program *intltool-merge* and set *conf.env.INTLTOOL*.
+	It is possible to set INTLTOOL in the environment, but it must not have spaces in it::
+
+		$ INTLTOOL="/path/to/the program/intltool" waf configure
+
+	If a C/C++ compiler is present, execute a compilation test to find the header *locale.h*.
+	"""
+	conf.find_msgfmt()
+	conf.find_intltool_merge()
+	if conf.env.CC or conf.env.CXX:
+		conf.check(header_name='locale.h')
+
diff --git a/Tools/irixcc.py b/Tools/irixcc.py
new file mode 100644
index 0000000..c3ae1ac
--- /dev/null
+++ b/Tools/irixcc.py
@@ -0,0 +1,66 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# imported from samba
+
+"""
+Compiler definition for irix/MIPSpro cc compiler
+"""
+
+from waflib import Errors
+from waflib.Tools import ccroot, ar
+from waflib.Configure import conf
+
+@conf
+def find_irixcc(conf):
+	v = conf.env
+	cc = None
+	if v.CC:
+		cc = v.CC
+	elif 'CC' in conf.environ:
+		cc = conf.environ['CC']
+	if not cc:
+		cc = conf.find_program('cc', var='CC')
+	if not cc:
+		conf.fatal('irixcc was not found')
+
+	try:
+		conf.cmd_and_log(cc + ['-version'])
+	except Errors.WafError:
+		conf.fatal('%r -version could not be executed' % cc)
+
+	v.CC = cc
+	v.CC_NAME = 'irix'
+
+@conf
+def irixcc_common_flags(conf):
+	v = conf.env
+
+	v.CC_SRC_F            = ''
+	v.CC_TGT_F            = ['-c', '-o']
+	v.CPPPATH_ST          = '-I%s'
+	v.DEFINES_ST          = '-D%s'
+
+	if not v.LINK_CC:
+		v.LINK_CC = v.CC
+
+	v.CCLNK_SRC_F         = ''
+	v.CCLNK_TGT_F         = ['-o']
+
+	v.LIB_ST              = '-l%s' # template for adding libs
+	v.LIBPATH_ST          = '-L%s' # template for adding libpaths
+	v.STLIB_ST            = '-l%s'
+	v.STLIBPATH_ST        = '-L%s'
+
+	v.cprogram_PATTERN    = '%s'
+	v.cshlib_PATTERN      = 'lib%s.so'
+	v.cstlib_PATTERN      = 'lib%s.a'
+
+def configure(conf):
+	conf.find_irixcc()
+	conf.find_cpp()
+	conf.find_ar()
+	conf.irixcc_common_flags()
+	conf.cc_load_tools()
+	conf.cc_add_flags()
+	conf.link_add_flags()
+
diff --git a/Tools/javaw.py b/Tools/javaw.py
new file mode 100644
index 0000000..f6fd20c
--- /dev/null
+++ b/Tools/javaw.py
@@ -0,0 +1,464 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2018 (ita)
+
+"""
+Java support
+
+Javac is one of the few compilers that behaves very badly:
+
+#. it outputs files where it wants to (-d is only for the package root)
+
+#. it recompiles files silently behind your back
+
+#. it outputs an undefined amount of files (inner classes)
+
+Remember that the compilation can be performed using Jython[1] rather than regular Python. Instead of
+running one of the following commands::
+
+   ./waf configure
+   python waf configure
+
+You would have to run::
+
+   java -jar /path/to/jython.jar waf configure
+
+[1] http://www.jython.org/
+"""
+
+import os, shutil
+from waflib import Task, Utils, Errors, Node
+from waflib.Configure import conf
+from waflib.TaskGen import feature, before_method, after_method
+
+from waflib.Tools import ccroot
+ccroot.USELIB_VARS['javac'] = set(['CLASSPATH', 'JAVACFLAGS'])
+
+SOURCE_RE = '**/*.java'
+JAR_RE = '**/*'
+
+class_check_source = '''
+public class Test {
+	public static void main(String[] argv) {
+		Class lib;
+		if (argv.length < 1) {
+			System.err.println("Missing argument");
+			System.exit(77);
+		}
+		try {
+			lib = Class.forName(argv[0]);
+		} catch (ClassNotFoundException e) {
+			System.err.println("ClassNotFoundException");
+			System.exit(1);
+		}
+		lib = null;
+		System.exit(0);
+	}
+}
+'''
+
+@feature('javac')
+@before_method('process_source')
+def apply_java(self):
+	"""
+	Create a javac task for compiling *.java files*. There can be
+	only one javac task by task generator.
+	"""
+	Utils.def_attrs(self, jarname='', classpath='',
+		sourcepath='.', srcdir='.',
+		jar_mf_attributes={}, jar_mf_classpath=[])
+
+	outdir = getattr(self, 'outdir', None)
+	if outdir:
+		if not isinstance(outdir, Node.Node):
+			outdir = self.path.get_bld().make_node(self.outdir)
+	else:
+		outdir = self.path.get_bld()
+	outdir.mkdir()
+	self.outdir = outdir
+	self.env.OUTDIR = outdir.abspath()
+
+	self.javac_task = tsk = self.create_task('javac')
+	tmp = []
+
+	srcdir = getattr(self, 'srcdir', '')
+	if isinstance(srcdir, Node.Node):
+		srcdir = [srcdir]
+	for x in Utils.to_list(srcdir):
+		if isinstance(x, Node.Node):
+			y = x
+		else:
+			y = self.path.find_dir(x)
+			if not y:
+				self.bld.fatal('Could not find the folder %s from %s' % (x, self.path))
+		tmp.append(y)
+
+	tsk.srcdir = tmp
+
+	if getattr(self, 'compat', None):
+		tsk.env.append_value('JAVACFLAGS', ['-source', str(self.compat)])
+
+	if hasattr(self, 'sourcepath'):
+		fold = [isinstance(x, Node.Node) and x or self.path.find_dir(x) for x in self.to_list(self.sourcepath)]
+		names = os.pathsep.join([x.srcpath() for x in fold])
+	else:
+		names = [x.srcpath() for x in tsk.srcdir]
+
+	if names:
+		tsk.env.append_value('JAVACFLAGS', ['-sourcepath', names])
+
+@feature('javac')
+@before_method('propagate_uselib_vars')
+@after_method('apply_java')
+def use_javac_files(self):
+	"""
+	Processes the *use* attribute referring to other java compilations
+	"""
+	lst = []
+	self.uselib = self.to_list(getattr(self, 'uselib', []))
+	names = self.to_list(getattr(self, 'use', []))
+	get = self.bld.get_tgen_by_name
+	for x in names:
+		try:
+			y = get(x)
+		except Errors.WafError:
+			self.uselib.append(x)
+		else:
+			y.post()
+			if hasattr(y, 'jar_task'):
+				lst.append(y.jar_task.outputs[0].abspath())
+				self.javac_task.set_run_after(y.jar_task)
+			else:
+				for tsk in y.tasks:
+					self.javac_task.set_run_after(tsk)
+	self.env.append_value('CLASSPATH', lst)
+
+@feature('javac')
+@after_method('apply_java', 'propagate_uselib_vars', 'use_javac_files')
+def set_classpath(self):
+	"""
+	Sets the CLASSPATH value on the *javac* task previously created.
+	"""
+	if getattr(self, 'classpath', None):
+		self.env.append_unique('CLASSPATH', getattr(self, 'classpath', []))
+	for x in self.tasks:
+		x.env.CLASSPATH = os.pathsep.join(self.env.CLASSPATH) + os.pathsep
+
+@feature('jar')
+@after_method('apply_java', 'use_javac_files')
+@before_method('process_source')
+def jar_files(self):
+	"""
+	Creates a jar task (one maximum per task generator)
+	"""
+	destfile = getattr(self, 'destfile', 'test.jar')
+	jaropts = getattr(self, 'jaropts', [])
+	manifest = getattr(self, 'manifest', None)
+
+	basedir = getattr(self, 'basedir', None)
+	if basedir:
+		if not isinstance(self.basedir, Node.Node):
+			basedir = self.path.get_bld().make_node(basedir)
+	else:
+		basedir = self.path.get_bld()
+	if not basedir:
+		self.bld.fatal('Could not find the basedir %r for %r' % (self.basedir, self))
+
+	self.jar_task = tsk = self.create_task('jar_create')
+	if manifest:
+		jarcreate = getattr(self, 'jarcreate', 'cfm')
+		if not isinstance(manifest,Node.Node):
+			node = self.path.find_resource(manifest)
+		else:
+			node = manifest
+		if not node:
+			self.bld.fatal('invalid manifest file %r for %r' % (manifest, self))
+		tsk.dep_nodes.append(node)
+		jaropts.insert(0, node.abspath())
+	else:
+		jarcreate = getattr(self, 'jarcreate', 'cf')
+	if not isinstance(destfile, Node.Node):
+		destfile = self.path.find_or_declare(destfile)
+	if not destfile:
+		self.bld.fatal('invalid destfile %r for %r' % (destfile, self))
+	tsk.set_outputs(destfile)
+	tsk.basedir = basedir
+
+	jaropts.append('-C')
+	jaropts.append(basedir.bldpath())
+	jaropts.append('.')
+
+	tsk.env.JAROPTS = jaropts
+	tsk.env.JARCREATE = jarcreate
+
+	if getattr(self, 'javac_task', None):
+		tsk.set_run_after(self.javac_task)
+
+@feature('jar')
+@after_method('jar_files')
+def use_jar_files(self):
+	"""
+	Processes the *use* attribute to set the build order on the
+	tasks created by another task generator.
+	"""
+	self.uselib = self.to_list(getattr(self, 'uselib', []))
+	names = self.to_list(getattr(self, 'use', []))
+	get = self.bld.get_tgen_by_name
+	for x in names:
+		try:
+			y = get(x)
+		except Errors.WafError:
+			self.uselib.append(x)
+		else:
+			y.post()
+			self.jar_task.run_after.update(y.tasks)
+
+class JTask(Task.Task):
+	"""
+	Base class for java and jar tasks; provides functionality to run long commands
+	"""
+	def split_argfile(self, cmd):
+		inline = [cmd[0]]
+		infile = []
+		for x in cmd[1:]:
+			# jar and javac do not want -J flags in @file
+			if x.startswith('-J'):
+				inline.append(x)
+			else:
+				infile.append(self.quote_flag(x))
+		return (inline, infile)
+
+class jar_create(JTask):
+	"""
+	Creates a jar file
+	"""
+	color   = 'GREEN'
+	run_str = '${JAR} ${JARCREATE} ${TGT} ${JAROPTS}'
+
+	def runnable_status(self):
+		"""
+		Wait for dependent tasks to be executed, then read the
+		files to update the list of inputs.
+		"""
+		for t in self.run_after:
+			if not t.hasrun:
+				return Task.ASK_LATER
+		if not self.inputs:
+			try:
+				self.inputs = [x for x in self.basedir.ant_glob(JAR_RE, remove=False) if id(x) != id(self.outputs[0])]
+			except Exception:
+				raise Errors.WafError('Could not find the basedir %r for %r' % (self.basedir, self))
+		return super(jar_create, self).runnable_status()
+
+class javac(JTask):
+	"""
+	Compiles java files
+	"""
+	color   = 'BLUE'
+	run_str = '${JAVAC} -classpath ${CLASSPATH} -d ${OUTDIR} ${JAVACFLAGS} ${SRC}'
+	vars = ['CLASSPATH', 'JAVACFLAGS', 'JAVAC', 'OUTDIR']
+	"""
+	The javac task will be executed again if the variables CLASSPATH, JAVACFLAGS, JAVAC or OUTDIR change.
+	"""
+	def uid(self):
+		"""Identify java tasks by input&output folder"""
+		lst = [self.__class__.__name__, self.generator.outdir.abspath()]
+		for x in self.srcdir:
+			lst.append(x.abspath())
+		return Utils.h_list(lst)
+
+	def runnable_status(self):
+		"""
+		Waits for dependent tasks to be complete, then read the file system to find the input nodes.
+		"""
+		for t in self.run_after:
+			if not t.hasrun:
+				return Task.ASK_LATER
+
+		if not self.inputs:
+			self.inputs  = []
+			for x in self.srcdir:
+				if x.exists():
+					self.inputs.extend(x.ant_glob(SOURCE_RE, remove=False))
+		return super(javac, self).runnable_status()
+
+	def post_run(self):
+		"""
+		List class files created
+		"""
+		for node in self.generator.outdir.ant_glob('**/*.class'):
+			self.generator.bld.node_sigs[node] = self.uid()
+		self.generator.bld.task_sigs[self.uid()] = self.cache_sig
+
+@feature('javadoc')
+@after_method('process_rule')
+def create_javadoc(self):
+	"""
+	Creates a javadoc task (feature 'javadoc')
+	"""
+	tsk = self.create_task('javadoc')
+	tsk.classpath = getattr(self, 'classpath', [])
+	self.javadoc_package = Utils.to_list(self.javadoc_package)
+	if not isinstance(self.javadoc_output, Node.Node):
+		self.javadoc_output = self.bld.path.find_or_declare(self.javadoc_output)
+
+class javadoc(Task.Task):
+	"""
+	Builds java documentation
+	"""
+	color = 'BLUE'
+
+	def __str__(self):
+		return '%s: %s -> %s\n' % (self.__class__.__name__, self.generator.srcdir, self.generator.javadoc_output)
+
+	def run(self):
+		env = self.env
+		bld = self.generator.bld
+		wd = bld.bldnode
+
+		#add src node + bld node (for generated java code)
+		srcpath = self.generator.path.abspath() + os.sep + self.generator.srcdir
+		srcpath += os.pathsep
+		srcpath += self.generator.path.get_bld().abspath() + os.sep + self.generator.srcdir
+
+		classpath = env.CLASSPATH
+		classpath += os.pathsep
+		classpath += os.pathsep.join(self.classpath)
+		classpath = "".join(classpath)
+
+		self.last_cmd = lst = []
+		lst.extend(Utils.to_list(env.JAVADOC))
+		lst.extend(['-d', self.generator.javadoc_output.abspath()])
+		lst.extend(['-sourcepath', srcpath])
+		lst.extend(['-classpath', classpath])
+		lst.extend(['-subpackages'])
+		lst.extend(self.generator.javadoc_package)
+		lst = [x for x in lst if x]
+
+		self.generator.bld.cmd_and_log(lst, cwd=wd, env=env.env or None, quiet=0)
+
+	def post_run(self):
+		nodes = self.generator.javadoc_output.ant_glob('**')
+		for node in nodes:
+			self.generator.bld.node_sigs[node] = self.uid()
+		self.generator.bld.task_sigs[self.uid()] = self.cache_sig
+
+def configure(self):
+	"""
+	Detects the javac, java and jar programs
+	"""
+	# If JAVA_PATH is set, we prepend it to the path list
+	java_path = self.environ['PATH'].split(os.pathsep)
+	v = self.env
+
+	if 'JAVA_HOME' in self.environ:
+		java_path = [os.path.join(self.environ['JAVA_HOME'], 'bin')] + java_path
+		self.env.JAVA_HOME = [self.environ['JAVA_HOME']]
+
+	for x in 'javac java jar javadoc'.split():
+		self.find_program(x, var=x.upper(), path_list=java_path)
+
+	if 'CLASSPATH' in self.environ:
+		v.CLASSPATH = self.environ['CLASSPATH']
+
+	if not v.JAR:
+		self.fatal('jar is required for making java packages')
+	if not v.JAVAC:
+		self.fatal('javac is required for compiling java classes')
+
+	v.JARCREATE = 'cf' # can use cvf
+	v.JAVACFLAGS = []
+
+@conf
+def check_java_class(self, classname, with_classpath=None):
+	"""
+	Checks if the specified java class exists
+
+	:param classname: class to check, like java.util.HashMap
+	:type classname: string
+	:param with_classpath: additional classpath to give
+	:type with_classpath: string
+	"""
+	javatestdir = '.waf-javatest'
+
+	classpath = javatestdir
+	if self.env.CLASSPATH:
+		classpath += os.pathsep + self.env.CLASSPATH
+	if isinstance(with_classpath, str):
+		classpath += os.pathsep + with_classpath
+
+	shutil.rmtree(javatestdir, True)
+	os.mkdir(javatestdir)
+
+	Utils.writef(os.path.join(javatestdir, 'Test.java'), class_check_source)
+
+	# Compile the source
+	self.exec_command(self.env.JAVAC + [os.path.join(javatestdir, 'Test.java')], shell=False)
+
+	# Try to run the app
+	cmd = self.env.JAVA + ['-cp', classpath, 'Test', classname]
+	self.to_log("%s\n" % str(cmd))
+	found = self.exec_command(cmd, shell=False)
+
+	self.msg('Checking for java class %s' % classname, not found)
+
+	shutil.rmtree(javatestdir, True)
+
+	return found
+
+@conf
+def check_jni_headers(conf):
+	"""
+	Checks for jni headers and libraries. On success the conf.env variables xxx_JAVA are added for use in C/C++ targets::
+
+		def options(opt):
+			opt.load('compiler_c')
+
+		def configure(conf):
+			conf.load('compiler_c java')
+			conf.check_jni_headers()
+
+		def build(bld):
+			bld.shlib(source='a.c', target='app', use='JAVA')
+	"""
+	if not conf.env.CC_NAME and not conf.env.CXX_NAME:
+		conf.fatal('load a compiler first (gcc, g++, ..)')
+
+	if not conf.env.JAVA_HOME:
+		conf.fatal('set JAVA_HOME in the system environment')
+
+	# jni requires the jvm
+	javaHome = conf.env.JAVA_HOME[0]
+
+	dir = conf.root.find_dir(conf.env.JAVA_HOME[0] + '/include')
+	if dir is None:
+		dir = conf.root.find_dir(conf.env.JAVA_HOME[0] + '/../Headers') # think different?!
+	if dir is None:
+		conf.fatal('JAVA_HOME does not seem to be set properly')
+
+	f = dir.ant_glob('**/(jni|jni_md).h')
+	incDirs = [x.parent.abspath() for x in f]
+
+	dir = conf.root.find_dir(conf.env.JAVA_HOME[0])
+	f = dir.ant_glob('**/*jvm.(so|dll|dylib)')
+	libDirs = [x.parent.abspath() for x in f] or [javaHome]
+
+	# On windows, we need both the .dll and .lib to link.  On my JDK, they are
+	# in different directories...
+	f = dir.ant_glob('**/*jvm.(lib)')
+	if f:
+		libDirs = [[x, y.parent.abspath()] for x in libDirs for y in f]
+
+	if conf.env.DEST_OS == 'freebsd':
+		conf.env.append_unique('LINKFLAGS_JAVA', '-pthread')
+	for d in libDirs:
+		try:
+			conf.check(header_name='jni.h', define_name='HAVE_JNI_H', lib='jvm',
+				libpath=d, includes=incDirs, uselib_store='JAVA', uselib='JAVA')
+		except Exception:
+			pass
+		else:
+			break
+	else:
+		conf.fatal('could not find lib jvm in %r (see config.log)' % libDirs)
+
diff --git a/Tools/ldc2.py b/Tools/ldc2.py
new file mode 100644
index 0000000..a51c344
--- /dev/null
+++ b/Tools/ldc2.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Alex Rønne Petersen, 2012 (alexrp/Zor)
+
+from waflib.Tools import ar, d
+from waflib.Configure import conf
+
+@conf
+def find_ldc2(conf):
+	"""
+	Finds the program *ldc2* and set the variable *D*
+	"""
+	conf.find_program(['ldc2'], var='D')
+
+	out = conf.cmd_and_log(conf.env.D + ['-version'])
+	if out.find("based on DMD v2.") == -1:
+		conf.fatal("detected compiler is not ldc2")
+
+@conf
+def common_flags_ldc2(conf):
+	"""
+	Sets the D flags required by *ldc2*
+	"""
+	v = conf.env
+
+	v.D_SRC_F           = ['-c']
+	v.D_TGT_F           = '-of%s'
+
+	v.D_LINKER          = v.D
+	v.DLNK_SRC_F        = ''
+	v.DLNK_TGT_F        = '-of%s'
+	v.DINC_ST           = '-I%s'
+
+	v.DSHLIB_MARKER = v.DSTLIB_MARKER = ''
+	v.DSTLIB_ST = v.DSHLIB_ST         = '-L-l%s'
+	v.DSTLIBPATH_ST = v.DLIBPATH_ST   = '-L-L%s'
+
+	v.LINKFLAGS_dshlib  = ['-L-shared']
+
+	v.DHEADER_ext       = '.di'
+	v.DFLAGS_d_with_header = ['-H', '-Hf']
+	v.D_HDR_F           = '%s'
+
+	v.LINKFLAGS     = []
+	v.DFLAGS_dshlib = ['-relocation-model=pic']
+
+def configure(conf):
+	"""
+	Configuration for *ldc2*
+	"""
+	conf.find_ldc2()
+	conf.load('ar')
+	conf.load('d')
+	conf.common_flags_ldc2()
+	conf.d_platform_flags()
+
diff --git a/Tools/lua.py b/Tools/lua.py
new file mode 100644
index 0000000..15a333a
--- /dev/null
+++ b/Tools/lua.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Sebastian Schlingmann, 2008
+# Thomas Nagy, 2008-2018 (ita)
+
+"""
+Lua support.
+
+Compile *.lua* files into *.luac*::
+
+	def configure(conf):
+		conf.load('lua')
+		conf.env.LUADIR = '/usr/local/share/myapp/scripts/'
+	def build(bld):
+		bld(source='foo.lua')
+"""
+
+from waflib.TaskGen import extension
+from waflib import Task
+
+@extension('.lua')
+def add_lua(self, node):
+	tsk = self.create_task('luac', node, node.change_ext('.luac'))
+	inst_to = getattr(self, 'install_path', self.env.LUADIR and '${LUADIR}' or None)
+	if inst_to:
+		self.add_install_files(install_to=inst_to, install_from=tsk.outputs)
+	return tsk
+
+class luac(Task.Task):
+	run_str = '${LUAC} -s -o ${TGT} ${SRC}'
+	color   = 'PINK'
+
+def configure(conf):
+	"""
+	Detect the luac compiler and set *conf.env.LUAC*
+	"""
+	conf.find_program('luac', var='LUAC')
+
diff --git a/Tools/md5_tstamp.py b/Tools/md5_tstamp.py
new file mode 100644
index 0000000..6428e46
--- /dev/null
+++ b/Tools/md5_tstamp.py
@@ -0,0 +1,39 @@
+#! /usr/bin/env python
+# encoding: utf-8
+
+"""
+Re-calculate md5 hashes of files only when the file times or the file
+size have changed.
+
+The hashes can also reflect either the file contents (STRONGEST=True) or the
+file time and file size.
+
+The performance benefits of this module are usually insignificant.
+"""
+
+import os, stat
+from waflib import Utils, Build, Node
+
+STRONGEST = True
+
+Build.SAVED_ATTRS.append('hashes_md5_tstamp')
+def h_file(self):
+	filename = self.abspath()
+	st = os.stat(filename)
+
+	cache = self.ctx.hashes_md5_tstamp
+	if filename in cache and cache[filename][0] == st.st_mtime:
+		return cache[filename][1]
+
+	if STRONGEST:
+		ret = Utils.h_file(filename)
+	else:
+		if stat.S_ISDIR(st[stat.ST_MODE]):
+			raise IOError('Not a file')
+		ret = Utils.md5(str((st.st_mtime, st.st_size)).encode()).digest()
+
+	cache[filename] = (st.st_mtime, ret)
+	return ret
+h_file.__doc__ = Node.Node.h_file.__doc__
+Node.Node.h_file = h_file
+
diff --git a/Tools/msvc.py b/Tools/msvc.py
new file mode 100644
index 0000000..17b347d
--- /dev/null
+++ b/Tools/msvc.py
@@ -0,0 +1,1020 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Carlos Rafael Giani, 2006 (dv)
+# Tamas Pal, 2007 (folti)
+# Nicolas Mercier, 2009
+# Matt Clarkson, 2012
+
+"""
+Microsoft Visual C++/Intel C++ compiler support
+
+If you get detection problems, first try any of the following::
+
+	chcp 65001
+	set PYTHONIOENCODING=...
+	set PYTHONLEGACYWINDOWSSTDIO=1
+
+Usage::
+
+	$ waf configure --msvc_version="msvc 10.0,msvc 9.0" --msvc_target="x64"
+
+or::
+
+	def configure(conf):
+		conf.env.MSVC_VERSIONS = ['msvc 10.0', 'msvc 9.0', 'msvc 8.0', 'msvc 7.1', 'msvc 7.0', 'msvc 6.0', 'wsdk 7.0', 'intel 11', 'PocketPC 9.0', 'Smartphone 8.0']
+		conf.env.MSVC_TARGETS = ['x64']
+		conf.load('msvc')
+
+or::
+
+	def configure(conf):
+		conf.load('msvc', funs='no_autodetect')
+		conf.check_lib_msvc('gdi32')
+		conf.check_libs_msvc('kernel32 user32')
+	def build(bld):
+		tg = bld.program(source='main.c', target='app', use='KERNEL32 USER32 GDI32')
+
+Platforms and targets will be tested in the order they appear;
+the first good configuration will be used.
+
+To force testing all the configurations that are not used, use the ``--no-msvc-lazy`` option
+or set ``conf.env.MSVC_LAZY_AUTODETECT=False``.
+
+Supported platforms: ia64, x64, x86, x86_amd64, x86_ia64, x86_arm, amd64_x86, amd64_arm
+
+Compilers supported:
+
+* msvc       => Visual Studio, versions 6.0 (VC 98, VC .NET 2002) to 15 (Visual Studio 2017)
+* wsdk       => Windows SDK, versions 6.0, 6.1, 7.0, 7.1, 8.0
+* icl        => Intel compiler, versions 9, 10, 11, 13
+* winphone   => Visual Studio to target Windows Phone 8 native (version 8.0 for now)
+* Smartphone => Compiler/SDK for Smartphone devices (armv4/v4i)
+* PocketPC   => Compiler/SDK for PocketPC devices (armv4/v4i)
+
+To use WAF in a VS2008 Make file project (see http://code.google.com/p/waf/issues/detail?id=894)
+You may consider to set the environment variable "VS_UNICODE_OUTPUT" to nothing before calling waf.
+So in your project settings use something like 'cmd.exe /C "set VS_UNICODE_OUTPUT=& set PYTHONUNBUFFERED=true & waf build"'.
+cmd.exe  /C  "chcp 1252 & set PYTHONUNBUFFERED=true && set && waf  configure"
+Setting PYTHONUNBUFFERED gives the unbuffered output.
+"""
+
+import os, sys, re, traceback
+from waflib import Utils, Logs, Options, Errors
+from waflib.TaskGen import after_method, feature
+
+from waflib.Configure import conf
+from waflib.Tools import ccroot, c, cxx, ar
+
+g_msvc_systemlibs = '''
+aclui activeds ad1 adptif adsiid advapi32 asycfilt authz bhsupp bits bufferoverflowu cabinet
+cap certadm certidl ciuuid clusapi comctl32 comdlg32 comsupp comsuppd comsuppw comsuppwd comsvcs
+credui crypt32 cryptnet cryptui d3d8thk daouuid dbgeng dbghelp dciman32 ddao35 ddao35d
+ddao35u ddao35ud delayimp dhcpcsvc dhcpsapi dlcapi dnsapi dsprop dsuiext dtchelp
+faultrep fcachdll fci fdi framedyd framedyn gdi32 gdiplus glauxglu32 gpedit gpmuuid
+gtrts32w gtrtst32hlink htmlhelp httpapi icm32 icmui imagehlp imm32 iphlpapi iprop
+kernel32 ksguid ksproxy ksuser libcmt libcmtd libcpmt libcpmtd loadperf lz32 mapi
+mapi32 mgmtapi minidump mmc mobsync mpr mprapi mqoa mqrt msacm32 mscms mscoree
+msdasc msimg32 msrating mstask msvcmrt msvcurt msvcurtd mswsock msxml2 mtx mtxdm
+netapi32 nmapinmsupp npptools ntdsapi ntdsbcli ntmsapi ntquery odbc32 odbcbcp
+odbccp32 oldnames ole32 oleacc oleaut32 oledb oledlgolepro32 opends60 opengl32
+osptk parser pdh penter pgobootrun pgort powrprof psapi ptrustm ptrustmd ptrustu
+ptrustud qosname rasapi32 rasdlg rassapi resutils riched20 rpcndr rpcns4 rpcrt4 rtm
+rtutils runtmchk scarddlg scrnsave scrnsavw secur32 sensapi setupapi sfc shell32
+shfolder shlwapi sisbkup snmpapi sporder srclient sti strsafe svcguid tapi32 thunk32
+traffic unicows url urlmon user32 userenv usp10 uuid uxtheme vcomp vcompd vdmdbg
+version vfw32 wbemuuid  webpost wiaguid wininet winmm winscard winspool winstrm
+wintrust wldap32 wmiutils wow32 ws2_32 wsnmp32 wsock32 wst wtsapi32 xaswitch xolehlp
+'''.split()
+"""importlibs provided by MSVC/Platform SDK. Do NOT search them"""
+
+all_msvc_platforms = [	('x64', 'amd64'), ('x86', 'x86'), ('ia64', 'ia64'),
+						('x86_amd64', 'amd64'), ('x86_ia64', 'ia64'), ('x86_arm', 'arm'), ('x86_arm64', 'arm64'),
+						('amd64_x86', 'x86'), ('amd64_arm', 'arm'), ('amd64_arm64', 'arm64') ]
+"""List of msvc platforms"""
+
+all_wince_platforms = [ ('armv4', 'arm'), ('armv4i', 'arm'), ('mipsii', 'mips'), ('mipsii_fp', 'mips'), ('mipsiv', 'mips'), ('mipsiv_fp', 'mips'), ('sh4', 'sh'), ('x86', 'cex86') ]
+"""List of wince platforms"""
+
+all_icl_platforms = [ ('intel64', 'amd64'), ('em64t', 'amd64'), ('ia32', 'x86'), ('Itanium', 'ia64')]
+"""List of icl platforms"""
+
+def options(opt):
+	opt.add_option('--msvc_version', type='string', help = 'msvc version, eg: "msvc 10.0,msvc 9.0"', default='')
+	opt.add_option('--msvc_targets', type='string', help = 'msvc targets, eg: "x64,arm"', default='')
+	opt.add_option('--no-msvc-lazy', action='store_false', help = 'lazily check msvc target environments', default=True, dest='msvc_lazy')
+
+@conf
+def setup_msvc(conf, versiondict):
+	"""
+	Checks installed compilers and targets and returns the first combination from the user's
+	options, env, or the global supported lists that checks.
+
+	:param versiondict: dict(platform -> dict(architecture -> configuration))
+	:type versiondict: dict(string -> dict(string -> target_compiler)
+	:return: the compiler, revision, path, include dirs, library paths and target architecture
+	:rtype: tuple of strings
+	"""
+	platforms = getattr(Options.options, 'msvc_targets', '').split(',')
+	if platforms == ['']:
+		platforms=Utils.to_list(conf.env.MSVC_TARGETS) or [i for i,j in all_msvc_platforms+all_icl_platforms+all_wince_platforms]
+	desired_versions = getattr(Options.options, 'msvc_version', '').split(',')
+	if desired_versions == ['']:
+		desired_versions = conf.env.MSVC_VERSIONS or list(reversed(sorted(versiondict.keys())))
+
+	# Override lazy detection by evaluating after the fact.
+	lazy_detect = getattr(Options.options, 'msvc_lazy', True)
+	if conf.env.MSVC_LAZY_AUTODETECT is False:
+		lazy_detect = False
+
+	if not lazy_detect:
+		for val in versiondict.values():
+			for arch in list(val.keys()):
+				cfg = val[arch]
+				cfg.evaluate()
+				if not cfg.is_valid:
+					del val[arch]
+		conf.env.MSVC_INSTALLED_VERSIONS = versiondict
+
+	for version in desired_versions:
+		Logs.debug('msvc: detecting %r - %r', version, desired_versions)
+		try:
+			targets = versiondict[version]
+		except KeyError:
+			continue
+
+		seen = set()
+		for arch in platforms:
+			if arch in seen:
+				continue
+			else:
+				seen.add(arch)
+			try:
+				cfg = targets[arch]
+			except KeyError:
+				continue
+
+			cfg.evaluate()
+			if cfg.is_valid:
+				compiler,revision = version.rsplit(' ', 1)
+				return compiler,revision,cfg.bindirs,cfg.incdirs,cfg.libdirs,cfg.cpu
+	conf.fatal('msvc: Impossible to find a valid architecture for building %r - %r' % (desired_versions, list(versiondict.keys())))
+
+@conf
+def get_msvc_version(conf, compiler, version, target, vcvars):
+	"""
+	Checks that an installed compiler actually runs and uses vcvars to obtain the
+	environment needed by the compiler.
+
+	:param compiler: compiler type, for looking up the executable name
+	:param version: compiler version, for debugging only
+	:param target: target architecture
+	:param vcvars: batch file to run to check the environment
+	:return: the location of the compiler executable, the location of include dirs, and the library paths
+	:rtype: tuple of strings
+	"""
+	Logs.debug('msvc: get_msvc_version: %r %r %r', compiler, version, target)
+
+	try:
+		conf.msvc_cnt += 1
+	except AttributeError:
+		conf.msvc_cnt = 1
+	batfile = conf.bldnode.make_node('waf-print-msvc-%d.bat' % conf.msvc_cnt)
+	batfile.write("""@echo off
+set INCLUDE=
+set LIB=
+call "%s" %s
+echo PATH=%%PATH%%
+echo INCLUDE=%%INCLUDE%%
+echo LIB=%%LIB%%;%%LIBPATH%%
+""" % (vcvars,target))
+	sout = conf.cmd_and_log(['cmd.exe', '/E:on', '/V:on', '/C', batfile.abspath()])
+	lines = sout.splitlines()
+
+	if not lines[0]:
+		lines.pop(0)
+
+	MSVC_PATH = MSVC_INCDIR = MSVC_LIBDIR = None
+	for line in lines:
+		if line.startswith('PATH='):
+			path = line[5:]
+			MSVC_PATH = path.split(';')
+		elif line.startswith('INCLUDE='):
+			MSVC_INCDIR = [i for i in line[8:].split(';') if i]
+		elif line.startswith('LIB='):
+			MSVC_LIBDIR = [i for i in line[4:].split(';') if i]
+	if None in (MSVC_PATH, MSVC_INCDIR, MSVC_LIBDIR):
+		conf.fatal('msvc: Could not find a valid architecture for building (get_msvc_version_3)')
+
+	# Check if the compiler is usable at all.
+	# The detection may return 64-bit versions even on 32-bit systems, and these would fail to run.
+	env = dict(os.environ)
+	env.update(PATH = path)
+	compiler_name, linker_name, lib_name = _get_prog_names(conf, compiler)
+	cxx = conf.find_program(compiler_name, path_list=MSVC_PATH)
+
+	# delete CL if exists. because it could contain parameters which can change cl's behaviour rather catastrophically.
+	if 'CL' in env:
+		del(env['CL'])
+
+	try:
+		conf.cmd_and_log(cxx + ['/help'], env=env)
+	except UnicodeError:
+		st = traceback.format_exc()
+		if conf.logger:
+			conf.logger.error(st)
+		conf.fatal('msvc: Unicode error - check the code page?')
+	except Exception as e:
+		Logs.debug('msvc: get_msvc_version: %r %r %r -> failure %s', compiler, version, target, str(e))
+		conf.fatal('msvc: cannot run the compiler in get_msvc_version (run with -v to display errors)')
+	else:
+		Logs.debug('msvc: get_msvc_version: %r %r %r -> OK', compiler, version, target)
+	finally:
+		conf.env[compiler_name] = ''
+
+	return (MSVC_PATH, MSVC_INCDIR, MSVC_LIBDIR)
+
+def gather_wince_supported_platforms():
+	"""
+	Checks SmartPhones SDKs
+
+	:param versions: list to modify
+	:type versions: list
+	"""
+	supported_wince_platforms = []
+	try:
+		ce_sdk = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Microsoft\\Windows CE Tools\\SDKs')
+	except OSError:
+		try:
+			ce_sdk = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Microsoft\\Windows CE Tools\\SDKs')
+		except OSError:
+			ce_sdk = ''
+	if not ce_sdk:
+		return supported_wince_platforms
+
+	index = 0
+	while 1:
+		try:
+			sdk_device = Utils.winreg.EnumKey(ce_sdk, index)
+			sdk = Utils.winreg.OpenKey(ce_sdk, sdk_device)
+		except OSError:
+			break
+		index += 1
+		try:
+			path,type = Utils.winreg.QueryValueEx(sdk, 'SDKRootDir')
+		except OSError:
+			try:
+				path,type = Utils.winreg.QueryValueEx(sdk,'SDKInformation')
+			except OSError:
+				continue
+			path,xml = os.path.split(path)
+		path = str(path)
+		path,device = os.path.split(path)
+		if not device:
+			path,device = os.path.split(path)
+		platforms = []
+		for arch,compiler in all_wince_platforms:
+			if os.path.isdir(os.path.join(path, device, 'Lib', arch)):
+				platforms.append((arch, compiler, os.path.join(path, device, 'Include', arch), os.path.join(path, device, 'Lib', arch)))
+		if platforms:
+			supported_wince_platforms.append((device, platforms))
+	return supported_wince_platforms
+
+def gather_msvc_detected_versions():
+	#Detected MSVC versions!
+	version_pattern = re.compile('^(\d\d?\.\d\d?)(Exp)?$')
+	detected_versions = []
+	for vcver,vcvar in (('VCExpress','Exp'), ('VisualStudio','')):
+		prefix = 'SOFTWARE\\Wow6432node\\Microsoft\\' + vcver
+		try:
+			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, prefix)
+		except OSError:
+			prefix = 'SOFTWARE\\Microsoft\\' + vcver
+			try:
+				all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, prefix)
+			except OSError:
+				continue
+
+		index = 0
+		while 1:
+			try:
+				version = Utils.winreg.EnumKey(all_versions, index)
+			except OSError:
+				break
+			index += 1
+			match = version_pattern.match(version)
+			if match:
+				versionnumber = float(match.group(1))
+			else:
+				continue
+			detected_versions.append((versionnumber, version+vcvar, prefix+'\\'+version))
+	def fun(tup):
+		return tup[0]
+
+	detected_versions.sort(key = fun)
+	return detected_versions
+
+class target_compiler(object):
+	"""
+	Wrap a compiler configuration; call evaluate() to determine
+	whether the configuration is usable.
+	"""
+	def __init__(self, ctx, compiler, cpu, version, bat_target, bat, callback=None):
+		"""
+		:param ctx: configuration context to use to eventually get the version environment
+		:param compiler: compiler name
+		:param cpu: target cpu
+		:param version: compiler version number
+		:param bat_target: ?
+		:param bat: path to the batch file to run
+		"""
+		self.conf = ctx
+		self.name = None
+		self.is_valid = False
+		self.is_done = False
+
+		self.compiler = compiler
+		self.cpu = cpu
+		self.version = version
+		self.bat_target = bat_target
+		self.bat = bat
+		self.callback = callback
+
+	def evaluate(self):
+		if self.is_done:
+			return
+		self.is_done = True
+		try:
+			vs = self.conf.get_msvc_version(self.compiler, self.version, self.bat_target, self.bat)
+		except Errors.ConfigurationError:
+			self.is_valid = False
+			return
+		if self.callback:
+			vs = self.callback(self, vs)
+		self.is_valid = True
+		(self.bindirs, self.incdirs, self.libdirs) = vs
+
+	def __str__(self):
+		return str((self.compiler, self.cpu, self.version, self.bat_target, self.bat))
+
+	def __repr__(self):
+		return repr((self.compiler, self.cpu, self.version, self.bat_target, self.bat))
+
+@conf
+def gather_wsdk_versions(conf, versions):
+	"""
+	Use winreg to add the msvc versions to the input list
+
+	:param versions: list to modify
+	:type versions: list
+	"""
+	version_pattern = re.compile('^v..?.?\...?.?')
+	try:
+		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Microsoft\\Microsoft SDKs\\Windows')
+	except OSError:
+		try:
+			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows')
+		except OSError:
+			return
+	index = 0
+	while 1:
+		try:
+			version = Utils.winreg.EnumKey(all_versions, index)
+		except OSError:
+			break
+		index += 1
+		if not version_pattern.match(version):
+			continue
+		try:
+			msvc_version = Utils.winreg.OpenKey(all_versions, version)
+			path,type = Utils.winreg.QueryValueEx(msvc_version,'InstallationFolder')
+		except OSError:
+			continue
+		if path and os.path.isfile(os.path.join(path, 'bin', 'SetEnv.cmd')):
+			targets = {}
+			for target,arch in all_msvc_platforms:
+				targets[target] = target_compiler(conf, 'wsdk', arch, version, '/'+target, os.path.join(path, 'bin', 'SetEnv.cmd'))
+			versions['wsdk ' + version[1:]] = targets
+
+@conf
+def gather_msvc_targets(conf, versions, version, vc_path):
+	#Looking for normal MSVC compilers!
+	targets = {}
+
+	if os.path.isfile(os.path.join(vc_path, 'VC', 'Auxiliary', 'Build', 'vcvarsall.bat')):
+		for target,realtarget in all_msvc_platforms[::-1]:
+			targets[target] = target_compiler(conf, 'msvc', realtarget, version, target, os.path.join(vc_path, 'VC', 'Auxiliary', 'Build', 'vcvarsall.bat'))
+	elif os.path.isfile(os.path.join(vc_path, 'vcvarsall.bat')):
+		for target,realtarget in all_msvc_platforms[::-1]:
+			targets[target] = target_compiler(conf, 'msvc', realtarget, version, target, os.path.join(vc_path, 'vcvarsall.bat'))
+	elif os.path.isfile(os.path.join(vc_path, 'Common7', 'Tools', 'vsvars32.bat')):
+		targets['x86'] = target_compiler(conf, 'msvc', 'x86', version, 'x86', os.path.join(vc_path, 'Common7', 'Tools', 'vsvars32.bat'))
+	elif os.path.isfile(os.path.join(vc_path, 'Bin', 'vcvars32.bat')):
+		targets['x86'] = target_compiler(conf, 'msvc', 'x86', version, '', os.path.join(vc_path, 'Bin', 'vcvars32.bat'))
+	if targets:
+		versions['msvc %s' % version] = targets
+
+@conf
+def gather_wince_targets(conf, versions, version, vc_path, vsvars, supported_platforms):
+	#Looking for Win CE compilers!
+	for device,platforms in supported_platforms:
+		targets = {}
+		for platform,compiler,include,lib in platforms:
+			winCEpath = os.path.join(vc_path, 'ce')
+			if not os.path.isdir(winCEpath):
+				continue
+
+			if os.path.isdir(os.path.join(winCEpath, 'lib', platform)):
+				bindirs = [os.path.join(winCEpath, 'bin', compiler), os.path.join(winCEpath, 'bin', 'x86_'+compiler)]
+				incdirs = [os.path.join(winCEpath, 'include'), os.path.join(winCEpath, 'atlmfc', 'include'), include]
+				libdirs = [os.path.join(winCEpath, 'lib', platform), os.path.join(winCEpath, 'atlmfc', 'lib', platform), lib]
+				def combine_common(obj, compiler_env):
+					# TODO this is likely broken, remove in waf 2.1
+					(common_bindirs,_1,_2) = compiler_env
+					return (bindirs + common_bindirs, incdirs, libdirs)
+				targets[platform] = target_compiler(conf, 'msvc', platform, version, 'x86', vsvars, combine_common)
+		if targets:
+			versions[device + ' ' + version] = targets
+
+@conf
+def gather_winphone_targets(conf, versions, version, vc_path, vsvars):
+	#Looking for WinPhone compilers
+	targets = {}
+	for target,realtarget in all_msvc_platforms[::-1]:
+		targets[target] = target_compiler(conf, 'winphone', realtarget, version, target, vsvars)
+	if targets:
+		versions['winphone ' + version] = targets
+
+@conf
+def gather_vswhere_versions(conf, versions):
+	try:
+		import json
+	except ImportError:
+		Logs.error('Visual Studio 2017 detection requires Python 2.6')
+		return
+
+	prg_path = os.environ.get('ProgramFiles(x86)', os.environ.get('ProgramFiles', 'C:\\Program Files (x86)'))
+
+	vswhere = os.path.join(prg_path, 'Microsoft Visual Studio', 'Installer', 'vswhere.exe')
+	args = [vswhere, '-products', '*', '-legacy', '-format', 'json']
+	try:
+		txt = conf.cmd_and_log(args)
+	except Errors.WafError as e:
+		Logs.debug('msvc: vswhere.exe failed %s', e)
+		return
+
+	if sys.version_info[0] < 3:
+		txt = txt.decode(Utils.console_encoding())
+
+	arr = json.loads(txt)
+	arr.sort(key=lambda x: x['installationVersion'])
+	for entry in arr:
+		ver = entry['installationVersion']
+		ver = str('.'.join(ver.split('.')[:2]))
+		path = str(os.path.abspath(entry['installationPath']))
+		if os.path.exists(path) and ('msvc %s' % ver) not in versions:
+			conf.gather_msvc_targets(versions, ver, path)
+
+@conf
+def gather_msvc_versions(conf, versions):
+	vc_paths = []
+	for (v,version,reg) in gather_msvc_detected_versions():
+		try:
+			try:
+				msvc_version = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, reg + "\\Setup\\VC")
+			except OSError:
+				msvc_version = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, reg + "\\Setup\\Microsoft Visual C++")
+			path,type = Utils.winreg.QueryValueEx(msvc_version, 'ProductDir')
+		except OSError:
+			try:
+				msvc_version = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, "SOFTWARE\\Wow6432node\\Microsoft\\VisualStudio\\SxS\\VS7")
+				path,type = Utils.winreg.QueryValueEx(msvc_version, version)
+			except OSError:
+				continue
+			else:
+				vc_paths.append((version, os.path.abspath(str(path))))
+			continue
+		else:
+			vc_paths.append((version, os.path.abspath(str(path))))
+
+	wince_supported_platforms = gather_wince_supported_platforms()
+
+	for version,vc_path in vc_paths:
+		vs_path = os.path.dirname(vc_path)
+		vsvars = os.path.join(vs_path, 'Common7', 'Tools', 'vsvars32.bat')
+		if wince_supported_platforms and os.path.isfile(vsvars):
+			conf.gather_wince_targets(versions, version, vc_path, vsvars, wince_supported_platforms)
+
+	# WP80 works with 11.0Exp and 11.0, both of which resolve to the same vc_path.
+	# Stop after one is found.
+	for version,vc_path in vc_paths:
+		vs_path = os.path.dirname(vc_path)
+		vsvars = os.path.join(vs_path, 'VC', 'WPSDK', 'WP80', 'vcvarsphoneall.bat')
+		if os.path.isfile(vsvars):
+			conf.gather_winphone_targets(versions, '8.0', vc_path, vsvars)
+			break
+
+	for version,vc_path in vc_paths:
+		vs_path = os.path.dirname(vc_path)
+		conf.gather_msvc_targets(versions, version, vc_path)
+
+@conf
+def gather_icl_versions(conf, versions):
+	"""
+	Checks ICL compilers
+
+	:param versions: list to modify
+	:type versions: list
+	"""
+	version_pattern = re.compile('^...?.?\....?.?')
+	try:
+		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Intel\\Compilers\\C++')
+	except OSError:
+		try:
+			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Intel\\Compilers\\C++')
+		except OSError:
+			return
+	index = 0
+	while 1:
+		try:
+			version = Utils.winreg.EnumKey(all_versions, index)
+		except OSError:
+			break
+		index += 1
+		if not version_pattern.match(version):
+			continue
+		targets = {}
+		for target,arch in all_icl_platforms:
+			if target=='intel64':
+				targetDir='EM64T_NATIVE'
+			else:
+				targetDir=target
+			try:
+				Utils.winreg.OpenKey(all_versions,version+'\\'+targetDir)
+				icl_version=Utils.winreg.OpenKey(all_versions,version)
+				path,type=Utils.winreg.QueryValueEx(icl_version,'ProductDir')
+			except OSError:
+				pass
+			else:
+				batch_file=os.path.join(path,'bin','iclvars.bat')
+				if os.path.isfile(batch_file):
+					targets[target] = target_compiler(conf, 'intel', arch, version, target, batch_file)
+		for target,arch in all_icl_platforms:
+			try:
+				icl_version = Utils.winreg.OpenKey(all_versions, version+'\\'+target)
+				path,type = Utils.winreg.QueryValueEx(icl_version,'ProductDir')
+			except OSError:
+				continue
+			else:
+				batch_file=os.path.join(path,'bin','iclvars.bat')
+				if os.path.isfile(batch_file):
+					targets[target] = target_compiler(conf, 'intel', arch, version, target, batch_file)
+		major = version[0:2]
+		versions['intel ' + major] = targets
+
+@conf
+def gather_intel_composer_versions(conf, versions):
+	"""
+	Checks ICL compilers that are part of Intel Composer Suites
+
+	:param versions: list to modify
+	:type versions: list
+	"""
+	version_pattern = re.compile('^...?.?\...?.?.?')
+	try:
+		all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Wow6432node\\Intel\\Suites')
+	except OSError:
+		try:
+			all_versions = Utils.winreg.OpenKey(Utils.winreg.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Intel\\Suites')
+		except OSError:
+			return
+	index = 0
+	while 1:
+		try:
+			version = Utils.winreg.EnumKey(all_versions, index)
+		except OSError:
+			break
+		index += 1
+		if not version_pattern.match(version):
+			continue
+		targets = {}
+		for target,arch in all_icl_platforms:
+			if target=='intel64':
+				targetDir='EM64T_NATIVE'
+			else:
+				targetDir=target
+			try:
+				try:
+					defaults = Utils.winreg.OpenKey(all_versions,version+'\\Defaults\\C++\\'+targetDir)
+				except OSError:
+					if targetDir == 'EM64T_NATIVE':
+						defaults = Utils.winreg.OpenKey(all_versions,version+'\\Defaults\\C++\\EM64T')
+					else:
+						raise
+				uid,type = Utils.winreg.QueryValueEx(defaults, 'SubKey')
+				Utils.winreg.OpenKey(all_versions,version+'\\'+uid+'\\C++\\'+targetDir)
+				icl_version=Utils.winreg.OpenKey(all_versions,version+'\\'+uid+'\\C++')
+				path,type=Utils.winreg.QueryValueEx(icl_version,'ProductDir')
+			except OSError:
+				pass
+			else:
+				batch_file=os.path.join(path,'bin','iclvars.bat')
+				if os.path.isfile(batch_file):
+					targets[target] = target_compiler(conf, 'intel', arch, version, target, batch_file)
+				# The intel compilervar_arch.bat is broken when used with Visual Studio Express 2012
+				# http://software.intel.com/en-us/forums/topic/328487
+				compilervars_warning_attr = '_compilervars_warning_key'
+				if version[0:2] == '13' and getattr(conf, compilervars_warning_attr, True):
+					setattr(conf, compilervars_warning_attr, False)
+					patch_url = 'http://software.intel.com/en-us/forums/topic/328487'
+					compilervars_arch = os.path.join(path, 'bin', 'compilervars_arch.bat')
+					for vscomntool in ('VS110COMNTOOLS', 'VS100COMNTOOLS'):
+						if vscomntool in os.environ:
+							vs_express_path = os.environ[vscomntool] + r'..\IDE\VSWinExpress.exe'
+							dev_env_path = os.environ[vscomntool] + r'..\IDE\devenv.exe'
+							if (r'if exist "%VS110COMNTOOLS%..\IDE\VSWinExpress.exe"' in Utils.readf(compilervars_arch) and
+								not os.path.exists(vs_express_path) and not os.path.exists(dev_env_path)):
+								Logs.warn(('The Intel compilervar_arch.bat only checks for one Visual Studio SKU '
+								'(VSWinExpress.exe) but it does not seem to be installed at %r. '
+								'The intel command line set up will fail to configure unless the file %r'
+								'is patched. See: %s') % (vs_express_path, compilervars_arch, patch_url))
+		major = version[0:2]
+		versions['intel ' + major] = targets
+
+@conf
+def detect_msvc(self):
+	return self.setup_msvc(self.get_msvc_versions())
+
+@conf
+def get_msvc_versions(self):
+	"""
+	:return: platform to compiler configurations
+	:rtype: dict
+	"""
+	dct = Utils.ordered_iter_dict()
+	self.gather_icl_versions(dct)
+	self.gather_intel_composer_versions(dct)
+	self.gather_wsdk_versions(dct)
+	self.gather_msvc_versions(dct)
+	self.gather_vswhere_versions(dct)
+	Logs.debug('msvc: detected versions %r', list(dct.keys()))
+	return dct
+
+@conf
+def find_lt_names_msvc(self, libname, is_static=False):
+	"""
+	Win32/MSVC specific code to glean out information from libtool la files.
+	this function is not attached to the task_gen class. Returns a triplet:
+	(library absolute path, library name without extension, whether the library is static)
+	"""
+	lt_names=[
+		'lib%s.la' % libname,
+		'%s.la' % libname,
+	]
+
+	for path in self.env.LIBPATH:
+		for la in lt_names:
+			laf=os.path.join(path,la)
+			dll=None
+			if os.path.exists(laf):
+				ltdict = Utils.read_la_file(laf)
+				lt_libdir=None
+				if ltdict.get('libdir', ''):
+					lt_libdir = ltdict['libdir']
+				if not is_static and ltdict.get('library_names', ''):
+					dllnames=ltdict['library_names'].split()
+					dll=dllnames[0].lower()
+					dll=re.sub('\.dll$', '', dll)
+					return (lt_libdir, dll, False)
+				elif ltdict.get('old_library', ''):
+					olib=ltdict['old_library']
+					if os.path.exists(os.path.join(path,olib)):
+						return (path, olib, True)
+					elif lt_libdir != '' and os.path.exists(os.path.join(lt_libdir,olib)):
+						return (lt_libdir, olib, True)
+					else:
+						return (None, olib, True)
+				else:
+					raise self.errors.WafError('invalid libtool object file: %s' % laf)
+	return (None, None, None)
+
+@conf
+def libname_msvc(self, libname, is_static=False):
+	lib = libname.lower()
+	lib = re.sub('\.lib$','',lib)
+
+	if lib in g_msvc_systemlibs:
+		return lib
+
+	lib=re.sub('^lib','',lib)
+
+	if lib == 'm':
+		return None
+
+	(lt_path, lt_libname, lt_static) = self.find_lt_names_msvc(lib, is_static)
+
+	if lt_path != None and lt_libname != None:
+		if lt_static:
+			# file existence check has been made by find_lt_names
+			return os.path.join(lt_path,lt_libname)
+
+	if lt_path != None:
+		_libpaths = [lt_path] + self.env.LIBPATH
+	else:
+		_libpaths = self.env.LIBPATH
+
+	static_libs=[
+		'lib%ss.lib' % lib,
+		'lib%s.lib' % lib,
+		'%ss.lib' % lib,
+		'%s.lib' %lib,
+		]
+
+	dynamic_libs=[
+		'lib%s.dll.lib' % lib,
+		'lib%s.dll.a' % lib,
+		'%s.dll.lib' % lib,
+		'%s.dll.a' % lib,
+		'lib%s_d.lib' % lib,
+		'%s_d.lib' % lib,
+		'%s.lib' %lib,
+		]
+
+	libnames=static_libs
+	if not is_static:
+		libnames=dynamic_libs + static_libs
+
+	for path in _libpaths:
+		for libn in libnames:
+			if os.path.exists(os.path.join(path, libn)):
+				Logs.debug('msvc: lib found: %s', os.path.join(path,libn))
+				return re.sub('\.lib$', '',libn)
+
+	#if no lib can be found, just return the libname as msvc expects it
+	self.fatal('The library %r could not be found' % libname)
+	return re.sub('\.lib$', '', libname)
+
+@conf
+def check_lib_msvc(self, libname, is_static=False, uselib_store=None):
+	"""
+	Ideally we should be able to place the lib in the right env var, either STLIB or LIB,
+	but we don't distinguish static libs from shared libs.
+	This is ok since msvc doesn't have any special linker flag to select static libs (no env.STLIB_MARKER)
+	"""
+	libn = self.libname_msvc(libname, is_static)
+
+	if not uselib_store:
+		uselib_store = libname.upper()
+
+	if False and is_static: # disabled
+		self.env['STLIB_' + uselib_store] = [libn]
+	else:
+		self.env['LIB_' + uselib_store] = [libn]
+
+@conf
+def check_libs_msvc(self, libnames, is_static=False):
+	for libname in Utils.to_list(libnames):
+		self.check_lib_msvc(libname, is_static)
+
+def configure(conf):
+	"""
+	Configuration methods to call for detecting msvc
+	"""
+	conf.autodetect(True)
+	conf.find_msvc()
+	conf.msvc_common_flags()
+	conf.cc_load_tools()
+	conf.cxx_load_tools()
+	conf.cc_add_flags()
+	conf.cxx_add_flags()
+	conf.link_add_flags()
+	conf.visual_studio_add_flags()
+
+@conf
+def no_autodetect(conf):
+	conf.env.NO_MSVC_DETECT = 1
+	configure(conf)
+
+@conf
+def autodetect(conf, arch=False):
+	v = conf.env
+	if v.NO_MSVC_DETECT:
+		return
+
+	compiler, version, path, includes, libdirs, cpu = conf.detect_msvc()
+	if arch:
+		v.DEST_CPU = cpu
+
+	v.PATH = path
+	v.INCLUDES = includes
+	v.LIBPATH = libdirs
+	v.MSVC_COMPILER = compiler
+	try:
+		v.MSVC_VERSION = float(version)
+	except ValueError:
+		v.MSVC_VERSION = float(version[:-3])
+
+def _get_prog_names(conf, compiler):
+	if compiler == 'intel':
+		compiler_name = 'ICL'
+		linker_name = 'XILINK'
+		lib_name = 'XILIB'
+	else:
+		# assumes CL.exe
+		compiler_name = 'CL'
+		linker_name = 'LINK'
+		lib_name = 'LIB'
+	return compiler_name, linker_name, lib_name
+
+@conf
+def find_msvc(conf):
+	"""Due to path format limitations, limit operation only to native Win32. Yeah it sucks."""
+	if sys.platform == 'cygwin':
+		conf.fatal('MSVC module does not work under cygwin Python!')
+
+	# the autodetection is supposed to be performed before entering in this method
+	v = conf.env
+	path = v.PATH
+	compiler = v.MSVC_COMPILER
+	version = v.MSVC_VERSION
+
+	compiler_name, linker_name, lib_name = _get_prog_names(conf, compiler)
+	v.MSVC_MANIFEST = (compiler == 'msvc' and version >= 8) or (compiler == 'wsdk' and version >= 6) or (compiler == 'intel' and version >= 11)
+
+	# compiler
+	cxx = conf.find_program(compiler_name, var='CXX', path_list=path)
+
+	# before setting anything, check if the compiler is really msvc
+	env = dict(conf.environ)
+	if path:
+		env.update(PATH = ';'.join(path))
+	if not conf.cmd_and_log(cxx + ['/nologo', '/help'], env=env):
+		conf.fatal('the msvc compiler could not be identified')
+
+	# c/c++ compiler
+	v.CC = v.CXX = cxx
+	v.CC_NAME = v.CXX_NAME = 'msvc'
+
+	# linker
+	if not v.LINK_CXX:
+		conf.find_program(linker_name, path_list=path, errmsg='%s was not found (linker)' % linker_name, var='LINK_CXX')
+
+	if not v.LINK_CC:
+		v.LINK_CC = v.LINK_CXX
+
+	# staticlib linker
+	if not v.AR:
+		stliblink = conf.find_program(lib_name, path_list=path, var='AR')
+		if not stliblink:
+			return
+		v.ARFLAGS = ['/nologo']
+
+	# manifest tool. Not required for VS 2003 and below. Must have for VS 2005 and later
+	if v.MSVC_MANIFEST:
+		conf.find_program('MT', path_list=path, var='MT')
+		v.MTFLAGS = ['/nologo']
+
+	try:
+		conf.load('winres')
+	except Errors.ConfigurationError:
+		Logs.warn('Resource compiler not found. Compiling resource file is disabled')
+
+@conf
+def visual_studio_add_flags(self):
+	"""visual studio flags found in the system environment"""
+	v = self.env
+	if self.environ.get('INCLUDE'):
+		v.prepend_value('INCLUDES', [x for x in self.environ['INCLUDE'].split(';') if x]) # notice the 'S'
+	if self.environ.get('LIB'):
+		v.prepend_value('LIBPATH', [x for x in self.environ['LIB'].split(';') if x])
+
+@conf
+def msvc_common_flags(conf):
+	"""
+	Setup the flags required for executing the msvc compiler
+	"""
+	v = conf.env
+
+	v.DEST_BINFMT = 'pe'
+	v.append_value('CFLAGS', ['/nologo'])
+	v.append_value('CXXFLAGS', ['/nologo'])
+	v.append_value('LINKFLAGS', ['/nologo'])
+	v.DEFINES_ST   = '/D%s'
+
+	v.CC_SRC_F     = ''
+	v.CC_TGT_F     = ['/c', '/Fo']
+	v.CXX_SRC_F    = ''
+	v.CXX_TGT_F    = ['/c', '/Fo']
+
+	if (v.MSVC_COMPILER == 'msvc' and v.MSVC_VERSION >= 8) or (v.MSVC_COMPILER == 'wsdk' and v.MSVC_VERSION >= 6):
+		v.CC_TGT_F = ['/FC'] + v.CC_TGT_F
+		v.CXX_TGT_F = ['/FC'] + v.CXX_TGT_F
+
+	v.CPPPATH_ST = '/I%s' # template for adding include paths
+
+	v.AR_TGT_F = v.CCLNK_TGT_F = v.CXXLNK_TGT_F = '/OUT:'
+
+	# CRT specific flags
+	v.CF