linux: compiler_version.py tweak to work on gcc 4.4

build/compiler_version.py

 #!/usr/bin/python
 
 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Compiler version checking tool for gcc
 
 Print gcc version as XY if you are running gcc X.Y.*.
 This is used to tweak build flags for gcc 4.4.
 """
 
 import os
 import re
 import subprocess
 import sys
 
 def GetVersion(compiler):
   try:
     # Note that compiler could be something tricky like "distcc g++".
     compiler = compiler + " -dumpversion"
     pipe = subprocess.Popen(compiler, stdout=subprocess.PIPE, shell=True)
     gcc_output = pipe.communicate()[0]
-    result = re.match(r"(\d+)\.(\d+)\..*", gcc_output)
+    result = re.match(r"(\d+)\.(\d+)", gcc_output)
     return result.group(1) + result.group(2)
   except Exception, e:
     print >> sys.stderr, "compiler_version.py failed to execute:", compiler
     print >> sys.stderr, e
     return ""
 
 def main():
   # Check if CXX environment variable exists and
   # if it does use that compiler.
   cxx = os.getenv("CXX", None)
   if cxx:
     cxxversion = GetVersion(cxx)
     if cxxversion != "":
       print cxxversion
       return 0
   else:
     # Otherwise we check the g++ version.
     gccversion = GetVersion("g++")
     if gccversion != "":
       print gccversion
       return 0
 
   return 1
 
 if __name__ == "__main__":
   sys.exit(main())