1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/webrtc/trunk/build/compiler_version.py Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,76 @@
1.4 +#!/usr/bin/env python
1.5 +# Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.6 +# Use of this source code is governed by a BSD-style license that can be
1.7 +# found in the LICENSE file.
1.8 +
1.9 +"""Compiler version checking tool for gcc
1.10 +
1.11 +Print gcc version as XY if you are running gcc X.Y.*.
1.12 +This is used to tweak build flags for gcc 4.4.
1.13 +"""
1.14 +
1.15 +import os
1.16 +import re
1.17 +import subprocess
1.18 +import sys
1.19 +
1.20 +def GetVersion(compiler):
1.21 + try:
1.22 + # Note that compiler could be something tricky like "distcc g++".
1.23 + compiler = compiler + " -dumpversion"
1.24 + pipe = subprocess.Popen(compiler, shell=True,
1.25 + stdout=subprocess.PIPE, stderr=subprocess.PIPE)
1.26 + gcc_output, gcc_error = pipe.communicate()
1.27 + if pipe.returncode:
1.28 + raise subprocess.CalledProcessError(pipe.returncode, compiler)
1.29 +
1.30 + result = re.match(r"(\d+)\.(\d+)", gcc_output)
1.31 + return result.group(1) + result.group(2)
1.32 + except Exception, e:
1.33 + if gcc_error:
1.34 + sys.stderr.write(gcc_error)
1.35 + print >> sys.stderr, "compiler_version.py failed to execute:", compiler
1.36 + print >> sys.stderr, e
1.37 + return ""
1.38 +
1.39 +def GetVersionFromEnvironment(compiler_env):
1.40 + """ Returns the version of compiler
1.41 +
1.42 + If the compiler was set by the given environment variable and exists,
1.43 + return its version, otherwise None is returned.
1.44 + """
1.45 + cxx = os.getenv(compiler_env, None)
1.46 + if cxx:
1.47 + cxx_version = GetVersion(cxx)
1.48 + if cxx_version != "":
1.49 + return cxx_version
1.50 + return None
1.51 +
1.52 +def main():
1.53 + # Check if CXX_target or CXX environment variable exists an if it does use
1.54 + # that compiler.
1.55 + # TODO: Fix ninja (see http://crbug.com/140900) instead and remove this code
1.56 + # In ninja's cross compile mode, the CXX_target is target compiler, while
1.57 + # the CXX is host. The CXX_target needs be checked first, though the target
1.58 + # and host compiler have different version, there seems no issue to use the
1.59 + # target compiler's version number as gcc_version in Android.
1.60 + cxx_version = GetVersionFromEnvironment("CXX_target")
1.61 + if cxx_version:
1.62 + print cxx_version
1.63 + return 0
1.64 +
1.65 + cxx_version = GetVersionFromEnvironment("CXX")
1.66 + if cxx_version:
1.67 + print cxx_version
1.68 + return 0
1.69 +
1.70 + # Otherwise we check the g++ version.
1.71 + gccversion = GetVersion("g++")
1.72 + if gccversion != "":
1.73 + print gccversion
1.74 + return 0
1.75 +
1.76 + return 1
1.77 +
1.78 +if __name__ == "__main__":
1.79 + sys.exit(main())
