#!/usr/bin/env python

MEMFD_CREATE_TEST = '''#define _GNU_SOURCE
#include <sys/mman.h>
int main(int argc, char **argv) { return memfd_create(argv[0], 0); }'''

DIRENT_D_TYPE_TEST = '''#define _GNU_SOURCE
#include <dirent.h>
int main(int argc, char **argv) { struct dirent entry; entry.d_type = DT_DIR; return 0; }
'''

def options(opt):
	pass

def configure(conf):
	if conf.env.COMPILER_CXX != 'msvc':
		conf.env.append_unique('CXXFLAGS', ['-fno-exceptions'])

	if conf.env.DEST_OS == 'android':
		conf.check_cc(lib='android')

	# remove lib prefix, except on Android which has issues unpacking libraries without prefix when debuggable=false
	if conf.env.DEST_OS != 'android':
		if conf.env.cxxshlib_PATTERN.startswith('lib'):
			conf.env.cxxshlib_PATTERN = conf.env.cxxshlib_PATTERN[3:]

	if conf.check_cc(fragment=MEMFD_CREATE_TEST, msg='Checking for memfd_create', mandatory=False):
		conf.define('HAVE_MEMFD_CREATE', 1)

	if conf.check_cc(fragment=DIRENT_D_TYPE_TEST, msg='Checking for d_type field in struct dirent', mandatory=False):
		conf.define('HAVE_DIRENT_D_TYPE', 1)

def build(bld):
	bld(name = 'filesystem_includes', export_includes = '.')

	libs = [ 'filesystem_includes', 'sdk_includes', 'werror' ]

	# on PSVita do not link any libraries that are already in the main executable, but add the includes target
	if bld.env.DEST_OS != 'psvita':
		libs += [ 'public', 'ANDROID', 'library_suffix', 'build_vcs' ]

	bld.shlib(target = 'filesystem_stdio',
		features = 'seq',
		source = bld.path.ant_glob(['*.c', '*.cpp']),
		use = libs,
		install_path = bld.env.LIBDIR)

	if bld.env.TESTS:
		# build in same module, so dynamic linking will work
		# for now (until we turn libpublic to shared module lol)
		tests = {
			'interface' : 'tests/interface.cpp',
			'caseinsensitive' : 'tests/caseinsensitive.c',
			'no-init': 'tests/no-init.c'
		}

		for i in tests:
			bld.program(features = 'test seq',
				source = tests[i],
				target = 'test_%s' % i,
				use = libs + ['DL'],
				rpath = bld.env.DEFAULT_RPATH,
				install_path = None)
