1#! /usr/bin/env python 2# -*- coding: utf-8 -*- 3 4# Copyright (c) 2011-2012, The Linux Foundation. All rights reserved. 5# 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 The Linux Foundation 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 clang, looking for warnings, and causing a failure if there are 31# non-whitelisted warnings. 32 33from __future__ import print_function 34import errno 35import re 36import os 37import sys 38import subprocess 39 40allowed_warnings = set([ 41 "tcpci.h:195", # drivers/usb/typec/tcpm/tcpci.h:195:12: warning: 'enum typec_cc_status' declared inside parameter list will not be visible outside of this definition or declaration 42 "atags_to_fdt.c:129", # arch/arm/boot/compressed/atags_to_fdt.c:129:5: warning: stack frame size of 2368 bytes in function 'atags_to_fdt' [-Wframe-larger-than=] 43 "file.c:3010", # fs/f2fs/file.c:3010:12: warning: unused function 'f2fs_ioctl_check_project' 44 "configfs.c:1488", # drivers/usb/gadget/configfs.c:1488:12: warning: unused function 'configfs_composite_setup' 45 "configfs.c:1513", # drivers/usb/gadget/configfs.c:1513:13: warning: unused function 'configfs_composite_disconnect' 46 ]) 47 48# Capture the name of the object file, can find it. 49ofile = None 50 51do_exit = False; 52 53warning_re = re.compile(r'''(.*/|)([^/]+\.[a-z]+:\d+):(\d+:)? warning:''') 54def interpret_warning(line): 55 """Decode the message from clang. The messages we care about have a filename, and a warning""" 56 line = line.rstrip('\n') 57 m = warning_re.match(line) 58 if m and m.group(2) not in allowed_warnings: 59 print ("error, forbidden warning:" + m.group(2)) 60 61 # If there is a warning, remove any object if it exists. 62 if ofile: 63 try: 64 os.remove(ofile) 65 except OSError: 66 pass 67 global do_exit 68 do_exit = True; 69 70def run_clang(): 71 args = sys.argv[1:] 72 # Look for -o 73 try: 74 i = args.index('-o') 75 global ofile 76 ofile = args[i+1] 77 except (ValueError, IndexError): 78 pass 79 80 try: 81 env = os.environ.copy() 82 env['LC_ALL'] = 'C' 83 proc = subprocess.Popen(args, stderr=subprocess.PIPE, env=env) 84 for line in proc.stderr: 85 print (line.decode("utf-8"), end="") 86 interpret_warning(line.decode("utf-8")) 87 if do_exit: 88 sys.exit(1) 89 90 result = proc.wait() 91 except OSError as e: 92 result = e.errno 93 if result == errno.ENOENT: 94 print (args[0] + ':' + e.strerror) 95 print ('Is your PATH set correctly?') 96 else: 97 print (' '.join(args) + str(e)) 98 99 return result 100 101if __name__ == '__main__': 102 status = run_clang() 103 sys.exit(status) 104