##
# build script for expat library
#
# Note:
#   1) Only a part of source code are required to be built.
#   2) Download code from https://android.googlesource.com/platform/external/expat.git
# otherwise, after code is downloaded, it's required to execute './configure' to
# generate expat_config.h
#
##

import os

Import('env')

expat_env = env.Clone()
SConscript(env.get('SRC_DIR') + '/build_common/tools/UnpackAll.py')
######################################################################
# Build flags
######################################################################
src_dir = 'expat-2.1.0/'

if not os.path.exists(src_dir):
	# Prepare source code (download / unpack / run configure)
	env.Download('expat.tar.gz', 'http://sourceforge.net/projects/expat/files/expat/2.1.0/expat-2.1.0.tar.gz/download')
	expat_src = env.UnpackAll(src_dir + '/Makefile', 'expat.tar.gz')
	env.Configure(src_dir, './configure')

expat_env.AppendUnique(CPPPATH = [src_dir, src_dir + 'lib', src_dir + 'vms'])

target_os = env.get('TARGET_OS')
if target_os not in ['windows', 'winrt']:
	expat_env.AppendUnique(CCFLAGS = ['-g', '-O2', '-Wall',
			'-Wmissing-prototypes', '-Wstrict-prototypes',
			'-fexceptions', '-fno-common'])
	expat_env.AppendUnique(CPPDEFINES = ['HAVE_EXPAT_CONFIG_H'])

if target_os not in ['darwin', 'ios', 'windows', 'winrt']:
	expat_env.AppendUnique(LINKFLAGS = ['-Wl,--no-undefined'])

######################################################################
# Source files and Targets
######################################################################
expat_src = [
	src_dir + 'lib/xmlparse.c',
	src_dir + 'lib/xmltok.c',
	src_dir + 'lib/xmlrole.c',
	]

libexpat = expat_env.SharedLibrary('expat', expat_src)

######################################################################
# Install header files and library binary
######################################################################
h = expat_env.InstallHeadFile([src_dir + 'lib/expat.h', src_dir + 'lib/expat_external.h'])
lib = expat_env.InstallLib(libexpat)

expat_env.AppendTarget('libexpat', [h, lib])