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#!/usr/bin/env python
import os
import shutil
from waflib import Logs
from waflib.extras import autowaf as autowaf

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

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

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

def configure(conf):
    autowaf.configure(conf)

    conf.line_just = 51
    autowaf.display_header('Sampler Configuration')
    conf.load('compiler_c')

    autowaf.check_header(conf, 'c', 'lv2/lv2plug.in/ns/lv2core/lv2.h')
    autowaf.check_header(conf, 'c', 'lv2/lv2plug.in/ns/ext/event/event-helpers.h')
    autowaf.check_header(conf, 'c', 'lv2/lv2plug.in/ns/ext/uri-map/uri-map.h')
    autowaf.check_header(conf, 'c', 'lv2/lv2plug.in/ns/ext/persist/persist.h')
    autowaf.check_pkg(conf, 'sndfile', uselib_store='SNDFILE',
                      atleast_version='1.0.0', mandatory=True)

    conf.env.append_value('CFLAGS', '-std=c99')

    # Set env['pluginlib_PATTERN']
    pat = conf.env['cshlib_PATTERN']
    if pat.startswith('lib'):
        pat = pat[3:]
    conf.env['pluginlib_PATTERN'] = pat
    conf.env['pluginlib_EXT'] = pat[pat.rfind('.'):]

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

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

    # Copy data files to build bundle (build/eg-sampler.lv2)
    for i in [ 'sampler.ttl', 'manifest.ttl', 'monosample.wav' ]:
        bld(rule         = 'cp ${SRC} ${TGT}',
            source       = i,
            target       = bld.path.get_bld().make_node('%s/%s' % (bundle, i)),
            install_path = '${LV2DIR}/%s' % bundle)

    # Create a build environment that builds module-style library names
    # e.g. eg-sampler.so instead of libeg-sampler.so
    # Note for C++ you must set cxxshlib_PATTERN instead
    penv                   = bld.env.derive()
    penv['cshlib_PATTERN'] = bld.env['pluginlib_PATTERN']

    # Build plugin library
    obj = bld(features     = 'c cshlib',
              env          = penv,
              source       = 'sampler.c',
              name         = 'sampler',
              target       = '%s/sampler' % bundle,
              install_path = '${LV2DIR}/%s' % bundle,
              use          = 'SNDFILE')