Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | # Copyright 2015 the V8 project authors. All rights reserved. |
| 3 | # Copyright 2015 The Chromium Authors. All rights reserved. |
| 4 | # Use of this source code is governed by a BSD-style license that can be |
| 5 | # found in the LICENSE file. |
| 6 | |
| 7 | """Script to download LLVM gold plugin from google storage.""" |
| 8 | |
| 9 | import json |
| 10 | import os |
| 11 | import re |
| 12 | import platform |
| 13 | import shutil |
| 14 | import subprocess |
| 15 | import sys |
| 16 | import zipfile |
| 17 | |
| 18 | # Bail out on windows and cygwin. |
| 19 | if "win" in platform.system().lower(): |
| 20 | # Python 2.7.6 hangs at the second path.insert command on windows. Works |
| 21 | # with python 2.7.8. |
| 22 | print "Gold plugin download not supported on windows." |
| 23 | sys.exit(0) |
| 24 | |
| 25 | SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__)) |
| 26 | CHROME_SRC = os.path.abspath(os.path.join(SCRIPT_DIR, os.pardir)) |
| 27 | sys.path.insert(0, os.path.join(CHROME_SRC, 'tools')) |
| 28 | |
| 29 | import find_depot_tools |
| 30 | |
| 31 | DEPOT_PATH = find_depot_tools.add_depot_tools_to_path() |
| 32 | GSUTIL_PATH = os.path.join(DEPOT_PATH, 'gsutil.py') |
| 33 | |
| 34 | LLVM_BUILD_PATH = os.path.join(CHROME_SRC, 'third_party', 'llvm-build', |
| 35 | 'Release+Asserts') |
| 36 | CLANG_UPDATE_PY = os.path.join(CHROME_SRC, 'tools', 'clang', 'scripts', |
| 37 | 'update.py') |
| 38 | CLANG_REVISION = os.popen(CLANG_UPDATE_PY + ' --print-revision').read().rstrip() |
| 39 | |
| 40 | CLANG_BUCKET = 'gs://chromium-browser-clang/Linux_x64' |
| 41 | |
| 42 | GOLD_PLUGIN_PATH = os.path.join(LLVM_BUILD_PATH, 'lib', 'LLVMgold.so') |
| 43 | |
| 44 | sys.path.insert(0, os.path.join(CHROME_SRC, 'tools', 'clang', 'scripts')) |
| 45 | |
| 46 | import update |
| 47 | |
| 48 | def main(): |
| 49 | if not re.search(r'cfi_vptr=1', os.environ.get('GYP_DEFINES', '')): |
| 50 | # Bailout if this is not a cfi build. |
| 51 | print 'Skipping gold plugin download for non-cfi build.' |
| 52 | return 0 |
| 53 | if (os.path.exists(GOLD_PLUGIN_PATH) and |
| 54 | update.ReadStampFile().strip() == update.PACKAGE_VERSION): |
| 55 | # Bailout if clang is up-to-date. This requires the script to be run before |
| 56 | # the clang update step! I.e. afterwards clang would always be up-to-date. |
| 57 | print 'Skipping gold plugin download. File present and clang up to date.' |
| 58 | return 0 |
| 59 | |
| 60 | # Make sure this works on empty checkouts (i.e. clang not downloaded yet). |
| 61 | if not os.path.exists(LLVM_BUILD_PATH): |
| 62 | os.makedirs(LLVM_BUILD_PATH) |
| 63 | |
| 64 | targz_name = 'llvmgold-%s.tgz' % CLANG_REVISION |
| 65 | remote_path = '%s/%s' % (CLANG_BUCKET, targz_name) |
| 66 | |
| 67 | os.chdir(LLVM_BUILD_PATH) |
| 68 | |
| 69 | # TODO(pcc): Fix gsutil.py cp url file < /dev/null 2>&0 |
| 70 | # (currently aborts with exit code 1, |
| 71 | # https://github.com/GoogleCloudPlatform/gsutil/issues/289) or change the |
| 72 | # stdin->stderr redirect in update.py to do something else (crbug.com/494442). |
| 73 | subprocess.check_call(['python', GSUTIL_PATH, |
| 74 | 'cp', remote_path, targz_name], |
| 75 | stderr=open('/dev/null', 'w')) |
| 76 | subprocess.check_call(['tar', 'xzf', targz_name]) |
| 77 | os.remove(targz_name) |
| 78 | return 0 |
| 79 | |
| 80 | if __name__ == '__main__': |
| 81 | sys.exit(main()) |