#! /usr/bin/env python
# encoding: utf-8

FRAGMENT_MEMORY_H='''#include <memory.h>
int main (void) {
	return 0;
}'''

FRAGMENT_MEMCMP='''#include <string.h>
int main (void) {
    memcmp(NULL, NULL, 0);
    return 0;
}'''

FRAGMENT_ALLOCA_H='''#include <alloca.h>
int main (void) {
	int foo=10;
	int * array = alloca(foo);
}'''

def options(opt):
	pass

def configure(conf):
	if not conf.path.find_dir('../vorbis-src') or not conf.path.find_dir('../vorbis-src/lib'):
		conf.fatal('Can\'t find libvorbis submodule. Run `git submodule update --init --recursive`.')
		return

	# Check for required headers
	if conf.check_cc(fragment=FRAGMENT_MEMORY_H, msg = 'Checking for memory.h header', mandatory = False):
		conf.define('USE_MEMORY_H', 1)
	
	conf.check_cc(fragmenmt=FRAGMENT_MEMCMP, msg = 'Checking for memcmp in string.h header', mandatory = False)
	conf.check_cc(fragment=FRAGMENT_ALLOCA_H, msg = 'Checking for alloca in alloca.h header', mandatory = False)

	if conf.env.COMPILER_CC == 'msvc':
		conf.define('_CRT_SECURE_NO_WARNINGS', 1)
		conf.define('_CRT_SECURE_NO_DEPRECATE', 1)
		conf.define('_CRT_NONSTDC_NO_DEPRECATE', 1)

def build(bld):
	sources = [
		'../vorbis-src/lib/mdct.c',
		'../vorbis-src/lib/smallft.c',
		'../vorbis-src/lib/block.c',
		'../vorbis-src/lib/envelope.c',
		'../vorbis-src/lib/window.c',
		'../vorbis-src/lib/lsp.c',
		'../vorbis-src/lib/lpc.c',
		'../vorbis-src/lib/analysis.c',
		'../vorbis-src/lib/synthesis.c',
		'../vorbis-src/lib/psy.c',
		'../vorbis-src/lib/info.c',
		'../vorbis-src/lib/floor1.c',
		'../vorbis-src/lib/floor0.c',
		'../vorbis-src/lib/res0.c',
		'../vorbis-src/lib/mapping0.c',
		'../vorbis-src/lib/registry.c',
		'../vorbis-src/lib/codebook.c',
		'../vorbis-src/lib/sharedbook.c',
		'../vorbis-src/lib/lookup.c',
		'../vorbis-src/lib/bitrate.c'
	]

	bld.stlib(
		source = sources,
		target = 'libvorbis',
		features = 'c',
		includes = ['../vorbis-src/include/'],
        use = ['libogg'],
		export_includes = ['../vorbis-src/include/']
	)