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#!/usr/bin/env python
# -*- coding: utf-8 vi:ts=4:noexpandtab
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):
"""
Emscripten doesn't support processing '-' like clang/gcc
"""
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 'iso8859-1')
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.bc'
conf.env.cxxstlib_PATTERN = '%s.bc'
conf.env.cprogram_PATTERN = '%s.html'
conf.env.cxxprogram_PATTERN = '%s.html'
conf.env.append_value('LINKFLAGS',['-Wl,--enable-auto-import'])
@feature('c', 'cxx', 'acm', 'includes')
@after_method('propagate_uselib_vars', 'process_source', 'apply_incpaths')
def apply_incpaths_emscripten(self):
"""
Emscripten doesn't like absolute include paths
"""
# TODO: in waf 1.9 we can switch back to bldnode as the default since path_from handles cross-drive paths
if self.env.CC_NAME != 'emscripten' or self.env.CC_NAME != 'emscripten':
return
lst = self.to_incnodes(self.to_list(getattr(self, 'includes', [])) + self.env['INCLUDES'])
self.includes_nodes = lst
self.env['INCPATHS'] = [x.path_from(self.bld.bldnode) for x in lst]
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