Maks Orlovich
58 lines
1.6 KiB
Python
Executable File
58 lines
1.6 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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#
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"""Compiler version checking tool for clang.
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(Based on corresponding tool for gcc in Chromium build system).
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Prints X*100 + Y if $CXX is pointing to clang X.Y.*. Prints 0 otherwise.
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Note that this output convention is different from compiler_version.py's. This
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also never returns a failing status, since we want to run this even on systems
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without clang, and gyp will complain on a non-successful status.
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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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compiler = compiler + " --version"
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pipe = subprocess.Popen(compiler, shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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output, 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.search(r"clang version (\d+)\.?(\d+)?", output)
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if result is None:
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return "0"
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minor_version = result.group(2)
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if minor_version is None:
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minor_version = "0"
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return str(int(result.group(1)) * 100 + int(minor_version))
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except Exception, e:
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if error:
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sys.stderr.write(error)
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print >> sys.stderr, "clang_version.py failed to execute:", compiler
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print >> sys.stderr, e
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return "0"
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def main():
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# Check if CXX environment variable exists, and 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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print GetVersion(cxx)
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else:
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print "0"
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if __name__ == "__main__":
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main()
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sys.exit(0)
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