craig.schlenter@chromium.org | d9110cb | 2009-11-04 02:32:10 +0900 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | |
| 3 | # Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 4 | # Use of this source code is governed by a BSD-style license that can be |
| 5 | # found in the LICENSE file. |
| 6 | |
| 7 | """Compiler version checking tool for gcc |
| 8 | |
| 9 | Print gcc version as XY if you are running gcc X.Y.*. |
| 10 | This is used to tweak build flags for gcc 4.4. |
| 11 | """ |
| 12 | |
| 13 | import os |
| 14 | import re |
| 15 | import subprocess |
| 16 | import sys |
| 17 | |
| 18 | def GetVersion(compiler): |
| 19 | try: |
| 20 | # Note that compiler could be something tricky like "distcc g++". |
| 21 | compiler = compiler + " -dumpversion" |
| 22 | pipe = subprocess.Popen(compiler, stdout=subprocess.PIPE, shell=True) |
| 23 | gcc_output = pipe.communicate()[0] |
evan@chromium.org | ab42567 | 2009-11-04 04:27:51 +0900 | [diff] [blame] | 24 | result = re.match(r"(\d+)\.(\d+)", gcc_output) |
craig.schlenter@chromium.org | d9110cb | 2009-11-04 02:32:10 +0900 | [diff] [blame] | 25 | return result.group(1) + result.group(2) |
| 26 | except Exception, e: |
| 27 | print >> sys.stderr, "compiler_version.py failed to execute:", compiler |
| 28 | print >> sys.stderr, e |
| 29 | return "" |
| 30 | |
| 31 | def main(): |
| 32 | # Check if CXX environment variable exists and |
| 33 | # if it does use that compiler. |
| 34 | cxx = os.getenv("CXX", None) |
| 35 | if cxx: |
| 36 | cxxversion = GetVersion(cxx) |
| 37 | if cxxversion != "": |
| 38 | print cxxversion |
| 39 | return 0 |
| 40 | else: |
| 41 | # Otherwise we check the g++ version. |
| 42 | gccversion = GetVersion("g++") |
| 43 | if gccversion != "": |
| 44 | print gccversion |
| 45 | return 0 |
| 46 | |
| 47 | return 1 |
| 48 | |
| 49 | if __name__ == "__main__": |
| 50 | sys.exit(main()) |