Roll clang 241602:242792

tools/clang/scripts/update.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Windows can't run .sh files, so this is a Python implementation of
 update.sh. This script should replace update.sh on all platforms eventually."""
 
 import argparse
 import contextlib
@@ skipping 386 matching lines @@
     # Check if there's a prebuilt binary and if so just fetch that. That's
     # faster, and goma relies on having matching binary hashes on client and
     # server too.
     print 'Trying to download prebuilt clang'
 
     # clang packages are smaller than 50 MB, small enough to keep in memory.
     with contextlib.closing(cStringIO.StringIO()) as f:
       try:
         DownloadUrl(cds_full_url, f)
         f.seek(0)
+        # TODO(thakis): Delete LLVM_BUILD_DIR before extracting.
         tarfile.open(mode='r:gz', fileobj=f).extractall(path=LLVM_BUILD_DIR)
         print 'clang %s unpacked' % PACKAGE_VERSION
         # Download the gold plugin if requested to by an environment variable.
         # This is used by the CFI ClusterFuzz bot.
         if 'LLVM_DOWNLOAD_GOLD_PLUGIN' in os.environ:
           RunCommand(['python', CHROMIUM_DIR+'/build/download_gold_plugin.py'])
         WriteStampFile(PACKAGE_VERSION)
         return 0
       except urllib2.HTTPError:
         print 'Did not find prebuilt clang %s, building locally' % cds_file
@@ skipping 345 matching lines @@
 
     args.force_local_build = True
     # Skip local patches when using HEAD: they probably don't apply anymore.
     args.with_patches = False
 
   return UpdateClang(args)
 
 
 if __name__ == '__main__':
   sys.exit(main())