56 lines
1.5 KiB
Python
Executable File
56 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Compiler version checking tool for gcc
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Print gcc version as XY if you are running gcc X.Y.*.
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This is used to tweak build flags for gcc 4.4.
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"""
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import os
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import re
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import subprocess
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import sys
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def GetVersion(compiler):
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try:
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# Note that compiler could be something tricky like "distcc g++".
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compiler = compiler + " -dumpversion"
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pipe = subprocess.Popen(compiler, shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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gcc_output, gcc_error = pipe.communicate()
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if pipe.returncode:
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raise subprocess.CalledProcessError(pipe.returncode, compiler)
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result = re.match(r"(\d+)\.(\d+)", gcc_output)
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return result.group(1) + result.group(2)
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except Exception, e:
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if gcc_error:
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sys.stderr.write(gcc_error)
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print >> sys.stderr, "compiler_version.py failed to execute:", compiler
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print >> sys.stderr, e
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return ""
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def main():
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# Check if CXX environment variable exists and
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# if it does use that compiler.
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cxx = os.getenv("CXX", None)
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if cxx:
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cxxversion = GetVersion(cxx)
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if cxxversion != "":
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print cxxversion
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return 0
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else:
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# Otherwise we check the g++ version.
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gccversion = GetVersion("g++")
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if gccversion != "":
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print gccversion
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return 0
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return 1
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if __name__ == "__main__":
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sys.exit(main())
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