#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! https://waf.io/book/index.html#_obtaining_the_waf_file

import subprocess,shlex,sys
from waflib.Tools import ccroot,gcc,gxx
from waflib.Configure import conf
from waflib.TaskGen import after_method,feature
from waflib.Tools.compiler_c import c_compiler
from waflib.Tools.compiler_cxx import cxx_compiler
for supported_os in('linux','darwin','gnu','aix'):
	c_compiler[supported_os].append('c_emscripten')
	cxx_compiler[supported_os].append('c_emscripten')
@conf
def get_emscripten_version(conf,cc):
	dummy=conf.cachedir.parent.make_node("waf-emscripten.c")
	dummy.write("")
	cmd=cc+['-dM','-E','-x','c',dummy.abspath()]
	env=conf.env.env or None
	try:
		p=subprocess.Popen(cmd,stdout=subprocess.PIPE,stderr=subprocess.PIPE,env=env)
		out=p.communicate()[0]
	except Exception as e:
		conf.fatal('Could not determine emscripten version %r: %s'%(cmd,e))
	if not isinstance(out,str):
		out=out.decode(sys.stdout.encoding or'latin-1')
	k={}
	out=out.splitlines()
	for line in out:
		lst=shlex.split(line)
		if len(lst)>2:
			key=lst[1]
			val=lst[2]
			k[key]=val
	if not('__clang__'in k and'EMSCRIPTEN'in k):
		conf.fatal('Could not determine the emscripten compiler version.')
	conf.env.DEST_OS='generic'
	conf.env.DEST_BINFMT='elf'
	conf.env.DEST_CPU='asm-js'
	conf.env.CC_VERSION=(k['__clang_major__'],k['__clang_minor__'],k['__clang_patchlevel__'])
	return k
@conf
def find_emscripten(conf):
	cc=conf.find_program(['emcc'],var='CC')
	conf.get_emscripten_version(cc)
	conf.env.CC=cc
	conf.env.CC_NAME='emscripten'
	cxx=conf.find_program(['em++'],var='CXX')
	conf.env.CXX=cxx
	conf.env.CXX_NAME='emscripten'
	conf.find_program(['emar'],var='AR')
def configure(conf):
	conf.find_emscripten()
	conf.find_ar()
	conf.gcc_common_flags()
	conf.gxx_common_flags()
	conf.cc_load_tools()
	conf.cc_add_flags()
	conf.cxx_load_tools()
	conf.cxx_add_flags()
	conf.link_add_flags()
	conf.env.ARFLAGS=['rcs']
	conf.env.cshlib_PATTERN='%s.js'
	conf.env.cxxshlib_PATTERN='%s.js'
	conf.env.cstlib_PATTERN='%s.a'
	conf.env.cxxstlib_PATTERN='%s.a'
	conf.env.cprogram_PATTERN='%s.html'
	conf.env.cxxprogram_PATTERN='%s.html'
	conf.env.CXX_TGT_F=['-c','-o','']
	conf.env.CC_TGT_F=['-c','-o','']
	conf.env.CXXLNK_TGT_F=['-o','']
	conf.env.CCLNK_TGT_F=['-o','']
	conf.env.append_value('LINKFLAGS',['-Wl,--enable-auto-import'])
