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authorDavid Robillard <d@drobilla.net>2018-09-22 10:24:26 +0200
committerDavid Robillard <d@drobilla.net>2018-09-22 10:24:26 +0200
commitdb4fa08d4da3cc840e6f97e6869a877f2b4c9474 (patch)
tree956538ded0be74ac6588f4cc6a963900eb8159ff /Configure.py
downloadlv2-db4fa08d4da3cc840e6f97e6869a877f2b4c9474.tar.xz
Squashed 'waflib/' content from commit 6e726eb
git-subtree-dir: waflib git-subtree-split: 6e726eb11d3e21be410549d27dd1aa94678f3d09
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+#!/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
+