Merge "scripts: gcc-wrapper: Route the GCC errors to stderr"

    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)

        print >> sys.stderr, "error, forbidden warning:", m.group(2)

        # If there is a warning, remove any object if it exists.

        if ofile:

    try:

        proc = subprocess.Popen(args, stderr=subprocess.PIPE)

        for line in proc.stderr:

            print line,

            print >> sys.stderr, line,

            interpret_warning(line)

        result = proc.wait()

    except OSError as e:

        result = e.errno

        if result == errno.ENOENT:

            print args[0] + ':',e.strerror

            print 'Is your PATH set correctly?'

            print >> sys.stderr, args[0] + ':',e.strerror

            print >> sys.stderr, 'Is your PATH set correctly?'

        else:

            print ' '.join(args), str(e)

            print >> sys.stderr, ' '.join(args), str(e)

    return result