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comparison: media/webrtc/trunk/build/compiler_version.py
media/webrtc/trunk/build/compiler_version.py
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- 6474c204b198
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| -1:000000000000 | 0:d9a96a3c06a4 |
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| 1 #!/usr/bin/env python | |
| 2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 3 # Use of this source code is governed by a BSD-style license that can be | |
| 4 # found in the LICENSE file. | |
| 5 | |
| 6 """Compiler version checking tool for gcc | |
| 7 | |
| 8 Print gcc version as XY if you are running gcc X.Y.*. | |
| 9 This is used to tweak build flags for gcc 4.4. | |
| 10 """ | |
| 11 | |
| 12 import os | |
| 13 import re | |
| 14 import subprocess | |
| 15 import sys | |
| 16 | |
| 17 def GetVersion(compiler): | |
| 18 try: | |
| 19 # Note that compiler could be something tricky like "distcc g++". | |
| 20 compiler = compiler + " -dumpversion" | |
| 21 pipe = subprocess.Popen(compiler, shell=True, | |
| 22 stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
| 23 gcc_output, gcc_error = pipe.communicate() | |
| 24 if pipe.returncode: | |
| 25 raise subprocess.CalledProcessError(pipe.returncode, compiler) | |
| 26 | |
| 27 result = re.match(r"(\d+)\.(\d+)", gcc_output) | |
| 28 return result.group(1) + result.group(2) | |
| 29 except Exception, e: | |
| 30 if gcc_error: | |
| 31 sys.stderr.write(gcc_error) | |
| 32 print >> sys.stderr, "compiler_version.py failed to execute:", compiler | |
| 33 print >> sys.stderr, e | |
| 34 return "" | |
| 35 | |
| 36 def GetVersionFromEnvironment(compiler_env): | |
| 37 """ Returns the version of compiler | |
| 38 | |
| 39 If the compiler was set by the given environment variable and exists, | |
| 40 return its version, otherwise None is returned. | |
| 41 """ | |
| 42 cxx = os.getenv(compiler_env, None) | |
| 43 if cxx: | |
| 44 cxx_version = GetVersion(cxx) | |
| 45 if cxx_version != "": | |
| 46 return cxx_version | |
| 47 return None | |
| 48 | |
| 49 def main(): | |
| 50 # Check if CXX_target or CXX environment variable exists an if it does use | |
| 51 # that compiler. | |
| 52 # TODO: Fix ninja (see http://crbug.com/140900) instead and remove this code | |
| 53 # In ninja's cross compile mode, the CXX_target is target compiler, while | |
| 54 # the CXX is host. The CXX_target needs be checked first, though the target | |
| 55 # and host compiler have different version, there seems no issue to use the | |
| 56 # target compiler's version number as gcc_version in Android. | |
| 57 cxx_version = GetVersionFromEnvironment("CXX_target") | |
| 58 if cxx_version: | |
| 59 print cxx_version | |
| 60 return 0 | |
| 61 | |
| 62 cxx_version = GetVersionFromEnvironment("CXX") | |
| 63 if cxx_version: | |
| 64 print cxx_version | |
| 65 return 0 | |
| 66 | |
| 67 # Otherwise we check the g++ version. | |
| 68 gccversion = GetVersion("g++") | |
| 69 if gccversion != "": | |
| 70 print gccversion | |
| 71 return 0 | |
| 72 | |
| 73 return 1 | |
| 74 | |
| 75 if __name__ == "__main__": | |
| 76 sys.exit(main()) |
