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-rw-r--r--extras/c_emscripten.py87
1 files changed, 87 insertions, 0 deletions
diff --git a/extras/c_emscripten.py b/extras/c_emscripten.py
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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 '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'])