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Bryan Huntsman3f2bc4d2011-08-16 17:27:22 -07001#! /usr/bin/env python
2# -*- coding: utf-8 -*-
3
Rohit Vaswani116bcf02012-02-02 16:01:39 -08004# Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
Bryan Huntsman3f2bc4d2011-08-16 17:27:22 -07005#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are met:
8# * Redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer.
10# * Redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution.
13# * Neither the name of Code Aurora nor
14# the names of its contributors may be used to endorse or promote
15# products derived from this software without specific prior written
16# permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21# NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30# Invoke gcc, looking for warnings, and causing a failure if there are
31# non-whitelisted warnings.
32
33import errno
34import re
35import os
36import sys
37import subprocess
38
39# Note that gcc uses unicode, which may depend on the locale. TODO:
40# force LANG to be set to en_US.UTF-8 to get consistent warnings.
41
42allowed_warnings = set([
Sridhar Parasuram32cd2e92012-06-11 10:22:19 -070043 "alignment.c:327",
Steve Mucklef132c6c2012-06-06 18:30:57 -070044 "mmu.c:602",
Sridhar Parasuram32cd2e92012-06-11 10:22:19 -070045 "return_address.c:62",
Bryan Huntsman3f2bc4d2011-08-16 17:27:22 -070046 ])
47
48# Capture the name of the object file, can find it.
49ofile = None
50
51warning_re = re.compile(r'''(.*/|)([^/]+\.[a-z]+:\d+):(\d+:)? warning:''')
52def interpret_warning(line):
53 """Decode the message from gcc. The messages we care about have a filename, and a warning"""
54 line = line.rstrip('\n')
55 m = warning_re.match(line)
56 if m and m.group(2) not in allowed_warnings:
57 print "error, forbidden warning:", m.group(2)
58
59 # If there is a warning, remove any object if it exists.
60 if ofile:
61 try:
62 os.remove(ofile)
63 except OSError:
64 pass
65 sys.exit(1)
66
67def run_gcc():
68 args = sys.argv[1:]
69 # Look for -o
70 try:
71 i = args.index('-o')
72 global ofile
73 ofile = args[i+1]
74 except (ValueError, IndexError):
75 pass
76
77 compiler = sys.argv[0]
78
79 try:
80 proc = subprocess.Popen(args, stderr=subprocess.PIPE)
81 for line in proc.stderr:
82 print line,
83 interpret_warning(line)
84
85 result = proc.wait()
86 except OSError as e:
87 result = e.errno
88 if result == errno.ENOENT:
89 print args[0] + ':',e.strerror
90 print 'Is your PATH set correctly?'
91 else:
92 print ' '.join(args), str(e)
93
94 return result
95
96if __name__ == '__main__':
97 status = run_gcc()
98 sys.exit(status)