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1#!/usr/bin/env python
2# Copyright (c) 2013 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"""
7Tries to compile given code, produces different output depending on success.
8
9This is similar to checks done by ./configure scripts.
10"""
11
12
13import optparse
14import os
15import shutil
16import subprocess
17import sys
18import tempfile
19
20
21def DoMain(argv):
22  parser = optparse.OptionParser()
23  parser.add_option('--code')
24  parser.add_option('--run-linker', action='store_true')
25  parser.add_option('--on-success', default='')
26  parser.add_option('--on-failure', default='')
27
28  options, args = parser.parse_args(argv)
29
30  if not options.code:
31    parser.error('Missing required --code switch.')
32
33  # The environment variable might expand to a string with spaces,
34  # e.g. "ccache g++". Convert it to a list suitable for argv.
35  cxx = os.environ.get('CXX', 'g++').split()
36
37  tmpdir = tempfile.mkdtemp()
38  try:
39    cxx_path = os.path.join(tmpdir, 'test.cc')
40    with open(cxx_path, 'w') as f:
41      f.write(options.code.decode('string-escape'))
42
43    o_path = os.path.join(tmpdir, 'test.o')
44
45    cxx_cmdline = cxx + [cxx_path, '-o', o_path]
46    if not options.run_linker:
47      cxx_cmdline.append('-c')
48    # Pass remaining arguments to the compiler.
49    cxx_cmdline += args
50    cxx_popen = subprocess.Popen(cxx_cmdline,
51                                 stdout=subprocess.PIPE,
52                                 stderr=subprocess.PIPE)
53    cxx_stdout, cxx_stderr = cxx_popen.communicate()
54    if cxx_popen.returncode == 0:
55      print options.on_success
56    else:
57      print options.on_failure
58  finally:
59    shutil.rmtree(tmpdir)
60
61  return 0
62
63
64if __name__ == '__main__':
65  sys.exit(DoMain(sys.argv[1:]))
66