How to use pkg_config method in fMBT

Best Python code snippet using fMBT_python

pkg.configure

Source:pkg.configure

...3# This Source Code Form is subject to the terms of the Mozilla Public4# License, v. 2.0. If a copy of the MPL was not distributed with this5# file, You can obtain one at http://mozilla.org/MPL/2.0/.6@depends('--enable-compile-environment')7def pkg_config(compile_env):8    if compile_env:9        return ('pkg-config',)10pkg_config = check_prog('PKG_CONFIG', pkg_config, allow_missing=True)11@depends_if(pkg_config)12@checking('for pkg-config version')13@imports('subprocess')14def pkg_config_version(pkg_config):15    return Version(check_cmd_output(pkg_config, '--version').rstrip())16# Locates the given module using pkg-config.17# - `var` determines the name of variables to set when the package is found.18#   <var>_CFLAGS and <var>_LIBS are set with corresponding values.19# - `package_desc` package name and version requirement string, list of20#   strings describing packages to locate, or depends function that will21#   resolve to such a string or list of strings.22# - `when` a depends function that will determine whether to perform23#   any checks (default is to always perform checks).24# - `allow_missing` If set, failure to fulfill the package description25#   will not result in an error or logged message, and any error message26#   will be returned to the caller.27#   Returns `True` when the package description is fulfilled.28@template29def pkg_check_modules(var, package_desc, when=always,30                      allow_missing=False):31    if isinstance(package_desc, (tuple, list)):32        package_desc = ' '.join(package_desc)33    package_desc = dependable(package_desc)34    @depends(when, '--enable-compile-environment')35    def when_and_compile_environment(when, compile_environment):36        return when and compile_environment37    @depends(pkg_config, pkg_config_version,38             when=when_and_compile_environment)39    def check_pkg_config(pkg_config, version):40        min_version = '0.9.0'41        if pkg_config is None:42            die("*** The pkg-config script could not be found. Make sure it is\n"43                "*** in your path, or set the PKG_CONFIG environment variable\n"44                "*** to the full path to pkg-config.")45        if version < min_version:46            die("*** Your version of pkg-config is too old. You need version %s or newer.",47                min_version)48    @depends(pkg_config, package_desc, when=when_and_compile_environment)49    @imports('subprocess')50    @imports('sys')51    @imports(_from='mozbuild.configure.util', _import='LineIO')52    def package(pkg_config, package_desc):53        # package_desc may start as a depends function, so we can't use...

pkgconfig.py

Source:pkgconfig.py

1# -*- mode: python; encoding: utf-8 -*-2# Gustavo Carneiro (gjamc) 20083import Options4import Configure5import subprocess6import config_c7import sys8def configure(conf):9	pkg_config = conf.find_program('pkg-config', var='PKG_CONFIG')10	if not pkg_config: return11@Configure.conf12def pkg_check_modules(conf, uselib_name, expression, mandatory=True):13	pkg_config = conf.env['PKG_CONFIG']14	if not pkg_config:15		if mandatory:16			conf.fatal("pkg-config is not available")17		else:18			return False19	if Options.options.verbose:20		extra_msg = ' (%s)' % expression21	else:22		extra_msg = ''23	conf.start_msg('Checking for pkg-config flags for %s%s' % (uselib_name, extra_msg))24	argv = [pkg_config, '--cflags', '--libs', expression]25	cmd = subprocess.Popen(argv, stdout=subprocess.PIPE, stderr=subprocess.PIPE)26	out, err = cmd.communicate()27	retval = cmd.wait()28	conf.to_log('%r: %r (exit code %i)\n%s' % (argv, out, retval, err))29	if retval != 0:30		conf.end_msg(False)31		sys.stderr.write(err)32	else:33		if Options.options.verbose:34			conf.end_msg(out)35		else:36			conf.end_msg(True)37	if retval == 0:38		conf.parse_flags(out, uselib_name, conf.env)39		conf.env[uselib_name] = True40		return True41	else:42		conf.env[uselib_name] = False43		if mandatory:44			raise Configure.ConfigurationError('pkg-config check failed')45		else:46			return False47@Configure.conf48def pkg_check_module_variable(conf, module, variable):49	pkg_config = conf.env['PKG_CONFIG']50	if not pkg_config:51		conf.fatal("pkg-config is not available")52	argv = [pkg_config, '--variable', variable, module]53	cmd = subprocess.Popen(argv, stdout=subprocess.PIPE)54	out, dummy = cmd.communicate()55	retval = cmd.wait()56	out = out.rstrip() # strip the trailing newline57	msg_checking = ("Checking for pkg-config variable %r in %s" % (variable, module,))58	conf.check_message_custom(msg_checking, '', out)59	conf.log.write('%r: %r (exit code %i)\n' % (argv, out, retval))60	if retval == 0:61		return out62	else:...

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