# -*- mode: python; encoding: utf-8 -*-

# Gustavo Carneiro (gjamc) 2008

import Options

import Configure

import pproc as subprocess

import config_c

def detect(conf):

	pkg_config = conf.find_program('pkg-config', var='PKG_CONFIG')

	if not pkg_config: return

@Configure.conf

def pkg_check_modules(conf, uselib_name, expression, mandatory=True):

	pkg_config = conf.env['PKG_CONFIG']

	if not pkg_config:

		if mandatory:

			conf.fatal("pkg-config is not available")

		else:

			return False

	argv = [pkg_config, '--cflags', '--libs', expression]

	cmd = subprocess.Popen(argv, stdout=subprocess.PIPE)

	out, dummy = cmd.communicate()

	retval = cmd.wait()

	msg_checking = ("pkg-config flags for %s" % (uselib_name,))

	if Options.options.verbose:

		if retval == 0:

			conf.check_message_custom(msg_checking,

						  ('(%s)' % expression), out)

		else:

			conf.check_message(msg_checking, ('(%s)' % expression), False)

	else:

		conf.check_message(msg_checking, '', (retval == 0), '')

	conf.log.write('%r: %r (exit code %i)\n' % (argv, out, retval))

	if retval == 0:

		config_c.parse_flags(out, uselib_name, conf.env)

		conf.env[uselib_name] = True

		return True

	else:

		conf.env[uselib_name] = False

		if mandatory:

			raise Configure.ConfigurationError('pkg-config check failed')

		else:

			return False

@Configure.conf

def pkg_check_module_variable(conf, module, variable):

	pkg_config = conf.env['PKG_CONFIG']

	if not pkg_config:

		conf.fatal("pkg-config is not available")

	argv = [pkg_config, '--variable', variable, module]

	cmd = subprocess.Popen(argv, stdout=subprocess.PIPE)

	out, dummy = cmd.communicate()

	retval = cmd.wait()

	out = out.rstrip() # strip the trailing newline

	msg_checking = ("pkg-config variable %r in %s" % (variable, module,))

	conf.check_message_custom(msg_checking, '', out)

	conf.log.write('%r: %r (exit code %i)\n' % (argv, out, retval))

	if retval == 0:

		return out

	else:

		raise Configure.ConfigurationError('pkg-config check failed')