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#!/usr/bin/env python
from waflib.extras import autowaf as autowaf
import re

# Variables for 'waf dist'
APPNAME = 'eg-sampler.lv2'
VERSION = '1.0.0'

# Mandatory variables
top = '.'
out = 'build'

def options(opt):
    opt.load('compiler_c')
    opt.load('lv2')
    autowaf.set_options(opt)

def configure(conf):
    autowaf.display_header('Sampler Configuration')
    conf.load('compiler_c', cache=True)
    conf.load('lv2', cache=True)
    conf.load('autowaf', cache=True)

    if not autowaf.is_child():
        autowaf.check_pkg(conf, 'lv2', atleast_version='1.2.1', uselib_store='LV2')

    autowaf.check_pkg(conf, 'sndfile', uselib_store='SNDFILE',
                      atleast_version='1.0.0', mandatory=True)
    autowaf.check_pkg(conf, 'gtk+-2.0', uselib_store='GTK2',
                      atleast_version='2.18.0', mandatory=False)
    conf.check(features='c cshlib', lib='m', uselib_store='M', mandatory=False)

    autowaf.display_msg(conf, 'LV2 bundle directory', conf.env.LV2DIR)
    print('')

def build(bld):
    bundle = 'eg-sampler.lv2'

    # Make a pattern for shared objects without the 'lib' prefix
    module_pat = re.sub('^lib', '', bld.env.cshlib_PATTERN)
    module_ext = module_pat[module_pat.rfind('.'):]

    # Build manifest.ttl by substitution (for portable lib extension)
    bld(features     = 'subst',
        source       = 'manifest.ttl.in',
        target       = '%s/%s' % (bundle, 'manifest.ttl'),
        install_path = '${LV2DIR}/%s' % bundle,
        LIB_EXT      = module_ext)

    # Copy other data files to build bundle (build/eg-sampler.lv2)
    for i in ['sampler.ttl', 'click.wav']:
        bld(features     = 'subst',
            is_copy      = True,
            source       = i,
            target       = '%s/%s' % (bundle, i),
            install_path = '${LV2DIR}/%s' % bundle)

    # Use LV2 headers from parent directory if building as a sub-project
    includes = ['.']
    if autowaf.is_child:
        includes += ['../..']

    # Build plugin library
    obj = bld(features     = 'c cshlib',
              source       = 'sampler.c',
              name         = 'sampler',
              target       = '%s/sampler' % bundle,
              install_path = '${LV2DIR}/%s' % bundle,
              use          = ['M', 'SNDFILE', 'LV2'],
              includes     = includes)
    obj.env.cshlib_PATTERN = module_pat

    # Build UI library
    if bld.env.HAVE_GTK2:
        obj = bld(features     = 'c cshlib',
                  source       = 'sampler_ui.c',
                  name         = 'sampler_ui',
                  target       = '%s/sampler_ui' % bundle,
                  install_path = '${LV2DIR}/%s' % bundle,
                  use          = ['GTK2', 'LV2'],
                  includes     = includes)
    obj.env.cshlib_PATTERN = module_pat