1 files changed, 116 insertions, 0 deletions
diff --git a/scripts/gcc-wrapper.py b/scripts/gcc-wrapper.py
new file mode 100755
index 00000000000..ceb12f866fc
--- /dev/null
+++ b/scripts/gcc-wrapper.py
@@ -0,0 +1,116 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#     * Neither the name of Code Aurora nor
+#       the names of its contributors may be used to endorse or promote
+#       products derived from this software without specific prior written
+#       permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Invoke gcc, looking for warnings, and causing a failure if there are
+# non-whitelisted warnings.
+
+import re
+import os
+import sys
+import subprocess
+
+# Note that gcc uses unicode, which may depend on the locale.  TODO:
+# force LANG to be set to en_US.UTF-8 to get consistent warnings.
+
+allowed_warnings = set([
+    "alignment.c:720",
+    "async.c:127",
+    "async.c:283",
+    "decompress_bunzip2.c:511",
+    "dm.c:1118",
+    "dm.c:1146",
+    "dm-table.c:1065",
+    "dm-table.c:1071",
+    "ehci-dbg.c:44",
+    "ehci-dbg.c:88",
+    "ehci-hcd.c:1048",
+    "ehci-hcd.c:423",
+    "ehci-hcd.c:614",
+    "ehci-hub.c:109",
+    "ehci-hub.c:1265",
+    "ehci-msm.c:156",
+    "ehci-msm.c:201",
+    "ehci-msm.c:455",
+    "eventpoll.c:1118",
+    "gspca.c:1509",
+    "ioctl.c:4673",
+    "main.c:305",
+    "main.c:734",
+    "nf_conntrack_netlink.c:762",
+    "nf_nat_standalone.c:118",
+    "return_address.c:61",
+    "scan.c:749",
+    "smsc.c:257",
+    "yaffs_guts.c:1571",
+    "yaffs_guts.c:600",
+ ])
+
+# Capture the name of the object file, can find it.
+ofile = None
+
+warning_re = re.compile(r'''(.*/|)([^/]+\.[a-z]+:\d+):(\d+:)? warning:''')
+def interpret_warning(line):
+    """Decode the message from gcc.  The messages we care about have a filename, and a warning"""
+    line = line.rstrip('\n')
+    m = warning_re.match(line)
+    if m and m.group(2) not in allowed_warnings:
+        print "error, forbidden warning:", m.group(2)
+
+        # If there is a warning, remove any object if it exists.
+        if ofile:
+            try:
+                os.remove(ofile)
+            except OSError:
+                pass
+        sys.exit(1)
+
+def run_gcc():
+    args = sys.argv[1:]
+    # Look for -o
+    try:
+        i = args.index('-o')
+        global ofile
+        ofile = args[i+1]
+    except (ValueError, IndexError):
+        pass
+
+    compiler = sys.argv[0]
+
+    proc = subprocess.Popen(args, stderr=subprocess.PIPE)
+    for line in proc.stderr:
+        print line,
+        interpret_warning(line)
+
+    result = proc.wait()
+
+    return result
+
+if __name__ == '__main__':
+    status = run_gcc()
+    sys.exit(status)