878 строки
34 KiB
Python
Executable File
878 строки
34 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""This script is used to download prebuilt clang binaries.
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It is also used by clang-package.py to build the prebuilt clang binaries."""
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import argparse
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import distutils.spawn
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import glob
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import os
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import pipes
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import re
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import shutil
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import subprocess
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import stat
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import sys
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import tarfile
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import tempfile
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import time
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import urllib2
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import zipfile
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from lib.config import IS_ARM64_HOST, IS_ARMV7_HOST
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# Do NOT CHANGE this if you don't know what you're doing -- see
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# https://chromium.googlesource.com/chromium/src/+/master/docs/updating_clang.md
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# Reverting problematic clang rolls is safe, though.
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CLANG_REVISION = '312679'
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use_head_revision = 'LLVM_FORCE_HEAD_REVISION' in os.environ
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if use_head_revision:
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CLANG_REVISION = 'HEAD'
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# This is incremented when pushing a new build of Clang at the same revision.
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CLANG_SUB_REVISION=1
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PACKAGE_VERSION = "%s-%s" % (CLANG_REVISION, CLANG_SUB_REVISION)
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# Path constants. (All of these should be absolute paths.)
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THIS_DIR = os.path.abspath(os.path.dirname(__file__))
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CHROMIUM_DIR = os.path.abspath(os.path.join(THIS_DIR, '..', 'src'))
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THIRD_PARTY_DIR = os.path.join(CHROMIUM_DIR, 'third_party')
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LLVM_DIR = os.path.join(THIRD_PARTY_DIR, 'llvm')
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LLVM_BOOTSTRAP_DIR = os.path.join(THIRD_PARTY_DIR, 'llvm-bootstrap')
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LLVM_BOOTSTRAP_INSTALL_DIR = os.path.join(THIRD_PARTY_DIR,
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'llvm-bootstrap-install')
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LLVM_LTO_LLD_DIR = os.path.join(THIRD_PARTY_DIR, 'llvm-lto-lld')
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CHROME_TOOLS_SHIM_DIR = os.path.join(LLVM_DIR, 'tools', 'chrometools')
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LLVM_BUILD_DIR = os.path.join(CHROMIUM_DIR, 'third_party', 'llvm-build',
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'Release+Asserts')
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COMPILER_RT_BUILD_DIR = os.path.join(LLVM_BUILD_DIR, 'compiler-rt')
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CLANG_DIR = os.path.join(LLVM_DIR, 'tools', 'clang')
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LLD_DIR = os.path.join(LLVM_DIR, 'tools', 'lld')
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# compiler-rt is built as part of the regular LLVM build on Windows to get
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# the 64-bit runtime, and out-of-tree elsewhere.
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# TODO(thakis): Try to unify this.
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if sys.platform == 'win32':
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COMPILER_RT_DIR = os.path.join(LLVM_DIR, 'projects', 'compiler-rt')
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else:
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COMPILER_RT_DIR = os.path.join(LLVM_DIR, 'compiler-rt')
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LIBCXX_DIR = os.path.join(LLVM_DIR, 'projects', 'libcxx')
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LIBCXXABI_DIR = os.path.join(LLVM_DIR, 'projects', 'libcxxabi')
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LLVM_BUILD_TOOLS_DIR = os.path.abspath(
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os.path.join(LLVM_DIR, '..', 'llvm-build-tools'))
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STAMP_FILE = os.path.normpath(
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os.path.join(LLVM_DIR, '..', 'llvm-build', 'cr_build_revision'))
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VERSION = '6.0.0'
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ANDROID_NDK_DIR = os.path.join(
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CHROMIUM_DIR, 'third_party', 'android_tools', 'ndk')
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# URL for pre-built binaries.
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CDS_URL = os.environ.get('CDS_CLANG_BUCKET_OVERRIDE',
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'https://commondatastorage.googleapis.com/chromium-browser-clang')
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LLVM_REPO_URL='https://llvm.org/svn/llvm-project'
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if 'LLVM_REPO_URL' in os.environ:
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LLVM_REPO_URL = os.environ['LLVM_REPO_URL']
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# Bump after VC updates.
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DIA_DLL = {
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'2013': 'msdia120.dll',
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'2015': 'msdia140.dll',
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'2017': 'msdia140.dll',
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}
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def DownloadUrl(url, output_file):
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"""Download url into output_file."""
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CHUNK_SIZE = 4096
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TOTAL_DOTS = 10
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num_retries = 3
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retry_wait_s = 5 # Doubled at each retry.
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while True:
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try:
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sys.stdout.write('Downloading %s ' % url)
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sys.stdout.flush()
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response = urllib2.urlopen(url)
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total_size = int(response.info().getheader('Content-Length').strip())
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bytes_done = 0
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dots_printed = 0
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while True:
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chunk = response.read(CHUNK_SIZE)
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if not chunk:
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break
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output_file.write(chunk)
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bytes_done += len(chunk)
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num_dots = TOTAL_DOTS * bytes_done / total_size
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sys.stdout.write('.' * (num_dots - dots_printed))
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sys.stdout.flush()
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dots_printed = num_dots
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if bytes_done != total_size:
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raise urllib2.URLError("only got %d of %d bytes" %
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(bytes_done, total_size))
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print ' Done.'
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return
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except urllib2.URLError as e:
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sys.stdout.write('\n')
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print e
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if num_retries == 0 or isinstance(e, urllib2.HTTPError) and e.code == 404:
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raise e
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num_retries -= 1
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print 'Retrying in %d s ...' % retry_wait_s
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time.sleep(retry_wait_s)
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retry_wait_s *= 2
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def EnsureDirExists(path):
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if not os.path.exists(path):
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print "Creating directory %s" % path
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os.makedirs(path)
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def DownloadAndUnpack(url, output_dir):
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with tempfile.TemporaryFile() as f:
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DownloadUrl(url, f)
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f.seek(0)
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EnsureDirExists(output_dir)
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if url.endswith('.zip'):
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zipfile.ZipFile(f).extractall(path=output_dir)
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else:
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tarfile.open(mode='r:gz', fileobj=f).extractall(path=output_dir)
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def ReadStampFile(path=STAMP_FILE):
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"""Return the contents of the stamp file, or '' if it doesn't exist."""
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try:
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with open(path, 'r') as f:
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return f.read().rstrip()
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except IOError:
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return ''
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def WriteStampFile(s, path=STAMP_FILE):
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"""Write s to the stamp file."""
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EnsureDirExists(os.path.dirname(path))
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with open(path, 'w') as f:
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f.write(s)
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f.write('\n')
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def GetSvnRevision(svn_repo):
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"""Returns current revision of the svn repo at svn_repo."""
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svn_info = subprocess.check_output('svn info ' + svn_repo, shell=True)
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m = re.search(r'Revision: (\d+)', svn_info)
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return m.group(1)
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def RmTree(dir):
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"""Delete dir."""
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def ChmodAndRetry(func, path, _):
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# Subversion can leave read-only files around.
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if not os.access(path, os.W_OK):
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os.chmod(path, stat.S_IWUSR)
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return func(path)
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raise
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shutil.rmtree(dir, onerror=ChmodAndRetry)
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def RmCmakeCache(dir):
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"""Delete CMake cache related files from dir."""
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for dirpath, dirs, files in os.walk(dir):
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if 'CMakeCache.txt' in files:
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os.remove(os.path.join(dirpath, 'CMakeCache.txt'))
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if 'CMakeFiles' in dirs:
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RmTree(os.path.join(dirpath, 'CMakeFiles'))
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def RunCommand(command, msvc_arch=None, env=None, fail_hard=True):
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"""Run command and return success (True) or failure; or if fail_hard is
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True, exit on failure. If msvc_arch is set, runs the command in a
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shell with the msvc tools for that architecture."""
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if msvc_arch and sys.platform == 'win32':
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command = GetVSVersion().SetupScript(msvc_arch) + ['&&'] + command
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# https://docs.python.org/2/library/subprocess.html:
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# "On Unix with shell=True [...] if args is a sequence, the first item
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# specifies the command string, and any additional items will be treated as
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# additional arguments to the shell itself. That is to say, Popen does the
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# equivalent of:
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# Popen(['/bin/sh', '-c', args[0], args[1], ...])"
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#
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# We want to pass additional arguments to command[0], not to the shell,
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# so manually join everything into a single string.
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# Annoyingly, for "svn co url c:\path", pipes.quote() thinks that it should
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# quote c:\path but svn can't handle quoted paths on Windows. Since on
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# Windows follow-on args are passed to args[0] instead of the shell, don't
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# do the single-string transformation there.
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if sys.platform != 'win32':
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command = ' '.join([pipes.quote(c) for c in command])
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print 'Running', command
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if subprocess.call(command, env=env, shell=True) == 0:
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return True
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print 'Failed.'
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if fail_hard:
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sys.exit(1)
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return False
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def CopyFile(src, dst):
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"""Copy a file from src to dst."""
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print "Copying %s to %s" % (src, dst)
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shutil.copy(src, dst)
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def CopyDirectoryContents(src, dst, filename_filter=None):
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"""Copy the files from directory src to dst
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with an optional filename filter."""
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dst = os.path.realpath(dst) # realpath() in case dst ends in /..
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EnsureDirExists(dst)
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for root, _, files in os.walk(src):
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for f in files:
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if filename_filter and not re.match(filename_filter, f):
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continue
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CopyFile(os.path.join(root, f), dst)
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def Checkout(name, url, dir):
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"""Checkout the SVN module at url into dir. Use name for the log message."""
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print "Checking out %s r%s into '%s'" % (name, CLANG_REVISION, dir)
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command = ['svn', 'checkout', '--force', url + '@' + CLANG_REVISION, dir]
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if RunCommand(command, fail_hard=False):
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return
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if os.path.isdir(dir):
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print "Removing %s." % (dir)
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RmTree(dir)
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print "Retrying."
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RunCommand(command)
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def DeleteChromeToolsShim():
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OLD_SHIM_DIR = os.path.join(LLVM_DIR, 'tools', 'zzz-chrometools')
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shutil.rmtree(OLD_SHIM_DIR, ignore_errors=True)
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shutil.rmtree(CHROME_TOOLS_SHIM_DIR, ignore_errors=True)
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def CreateChromeToolsShim():
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"""Hooks the Chrome tools into the LLVM build.
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Several Chrome tools have dependencies on LLVM/Clang libraries. The LLVM build
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detects implicit tools in the tools subdirectory, so this helper install a
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shim CMakeLists.txt that forwards to the real directory for the Chrome tools.
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Note that the shim directory name intentionally has no - or _. The implicit
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tool detection logic munges them in a weird way."""
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assert not any(i in os.path.basename(CHROME_TOOLS_SHIM_DIR) for i in '-_')
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os.mkdir(CHROME_TOOLS_SHIM_DIR)
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with file(os.path.join(CHROME_TOOLS_SHIM_DIR, 'CMakeLists.txt'), 'w') as f:
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f.write('# Automatically generated by tools/clang/scripts/update.py. ' +
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'Do not edit.\n')
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f.write('# Since tools/clang is located in another directory, use the \n')
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f.write('# two arg version to specify where build artifacts go. CMake\n')
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f.write('# disallows reuse of the same binary dir for multiple source\n')
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f.write('# dirs, so the build artifacts need to go into a subdirectory.\n')
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f.write('if (CHROMIUM_TOOLS_SRC)\n')
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f.write(' add_subdirectory(${CHROMIUM_TOOLS_SRC} ' +
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'${CMAKE_CURRENT_BINARY_DIR}/a)\n')
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f.write('endif (CHROMIUM_TOOLS_SRC)\n')
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def DownloadHostGcc(args):
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"""Downloads gcc 4.8.5 and makes sure args.gcc_toolchain is set."""
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if not sys.platform.startswith('linux') or args.gcc_toolchain:
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return
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gcc_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'gcc485precise')
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if not os.path.exists(gcc_dir):
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print 'Downloading pre-built GCC 4.8.5...'
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DownloadAndUnpack(
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CDS_URL + '/tools/gcc485precise.tgz', LLVM_BUILD_TOOLS_DIR)
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args.gcc_toolchain = gcc_dir
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def AddSvnToPathOnWin():
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"""Download svn.exe and add it to PATH."""
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if sys.platform != 'win32':
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return
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svn_ver = 'svn-1.6.6-win'
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svn_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, svn_ver)
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if not os.path.exists(svn_dir):
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DownloadAndUnpack(CDS_URL + '/tools/%s.zip' % svn_ver, LLVM_BUILD_TOOLS_DIR)
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os.environ['PATH'] = svn_dir + os.pathsep + os.environ.get('PATH', '')
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def AddCMakeToPath():
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"""Download CMake and add it to PATH."""
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if sys.platform == 'win32':
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zip_name = 'cmake-3.4.3-win32-x86.zip'
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cmake_dir = os.path.join(LLVM_BUILD_TOOLS_DIR,
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'cmake-3.4.3-win32-x86', 'bin')
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else:
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suffix = 'Darwin' if sys.platform == 'darwin' else 'Linux'
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zip_name = 'cmake343_%s.tgz' % suffix
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cmake_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'cmake343', 'bin')
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if not os.path.exists(cmake_dir):
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DownloadAndUnpack(CDS_URL + '/tools/' + zip_name, LLVM_BUILD_TOOLS_DIR)
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os.environ['PATH'] = cmake_dir + os.pathsep + os.environ.get('PATH', '')
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def AddGnuWinToPath():
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"""Download some GNU win tools and add them to PATH."""
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if sys.platform != 'win32':
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return
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gnuwin_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'gnuwin')
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GNUWIN_VERSION = '7'
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GNUWIN_STAMP = os.path.join(gnuwin_dir, 'stamp')
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if ReadStampFile(GNUWIN_STAMP) == GNUWIN_VERSION:
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print 'GNU Win tools already up to date.'
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else:
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zip_name = 'gnuwin-%s.zip' % GNUWIN_VERSION
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DownloadAndUnpack(CDS_URL + '/tools/' + zip_name, LLVM_BUILD_TOOLS_DIR)
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WriteStampFile(GNUWIN_VERSION, GNUWIN_STAMP)
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os.environ['PATH'] = gnuwin_dir + os.pathsep + os.environ.get('PATH', '')
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vs_version = None
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def GetVSVersion():
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global vs_version
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if vs_version:
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return vs_version
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# Try using the toolchain in depot_tools.
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# This sets environment variables used by SelectVisualStudioVersion below.
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sys.path.append(os.path.join(CHROMIUM_DIR, 'build'))
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import vs_toolchain
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vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()
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# Use gyp to find the MSVS installation, either in depot_tools as per above,
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# or a system-wide installation otherwise.
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sys.path.append(os.path.join(CHROMIUM_DIR, 'tools', 'gyp', 'pylib'))
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import gyp.MSVSVersion
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vs_version = gyp.MSVSVersion.SelectVisualStudioVersion(
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vs_toolchain.GetVisualStudioVersion())
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return vs_version
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def CopyDiaDllTo(target_dir):
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# This script always wants to use the 64-bit msdia*.dll.
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dia_path = os.path.join(GetVSVersion().Path(), 'DIA SDK', 'bin', 'amd64')
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dia_dll = os.path.join(dia_path, DIA_DLL[GetVSVersion().ShortName()])
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CopyFile(dia_dll, target_dir)
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def VeryifyVersionOfBuiltClangMatchesVERSION():
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"""Checks that `clang --version` outputs VERSION. If this fails, VERSION
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in this file is out-of-date and needs to be updated (possibly in an
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`if use_head_revision:` block in main() first)."""
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clang = os.path.join(LLVM_BUILD_DIR, 'bin', 'clang')
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if sys.platform == 'win32':
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# TODO: Parse `clang-cl /?` output for built clang's version and check that
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# to check the binary we're actually shipping? But clang-cl.exe is just
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# a copy of clang.exe, so this does check the same thing.
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clang += '.exe'
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version_out = subprocess.check_output([clang, '--version'])
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version_out = re.match(r'clang version ([0-9.]+)', version_out).group(1)
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if version_out != VERSION:
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print ('unexpected clang version %s (not %s), update VERSION in update.py'
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% (version_out, VERSION))
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sys.exit(1)
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def UpdateClang(args):
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print 'Updating Clang to %s...' % PACKAGE_VERSION
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if ReadStampFile() == PACKAGE_VERSION and not args.force_local_build:
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print 'Clang is already up to date.'
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return 0
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# Reset the stamp file in case the build is unsuccessful.
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WriteStampFile('')
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if not args.force_local_build:
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cds_file = "clang-%s.tgz" % PACKAGE_VERSION
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if sys.platform == 'win32' or sys.platform == 'cygwin':
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cds_full_url = CDS_URL + '/Win/' + cds_file
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elif sys.platform == 'darwin':
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cds_full_url = CDS_URL + '/Mac/' + cds_file
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else:
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assert sys.platform.startswith('linux')
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cds_full_url = CDS_URL + '/Linux_x64/' + cds_file
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print 'Downloading prebuilt clang'
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if os.path.exists(LLVM_BUILD_DIR):
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RmTree(LLVM_BUILD_DIR)
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try:
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DownloadAndUnpack(cds_full_url, LLVM_BUILD_DIR)
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print 'clang %s unpacked' % PACKAGE_VERSION
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if sys.platform == 'win32':
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CopyDiaDllTo(os.path.join(LLVM_BUILD_DIR, 'bin'))
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WriteStampFile(PACKAGE_VERSION)
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return 0
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except urllib2.URLError:
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print 'Failed to download prebuilt clang %s' % cds_file
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print 'Use --force-local-build if you want to build locally.'
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print 'Exiting.'
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return 1
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if args.with_android and not os.path.exists(ANDROID_NDK_DIR):
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print 'Android NDK not found at ' + ANDROID_NDK_DIR
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print 'The Android NDK is needed to build a Clang whose -fsanitize=address'
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print 'works on Android. See '
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print 'https://www.chromium.org/developers/how-tos/android-build-instructions'
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print 'for how to install the NDK, or pass --without-android.'
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return 1
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DownloadHostGcc(args)
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|
if not IS_ARM64_HOST and not IS_ARMV7_HOST:
|
|
AddCMakeToPath()
|
|
AddGnuWinToPath()
|
|
|
|
DeleteChromeToolsShim()
|
|
|
|
Checkout('LLVM', LLVM_REPO_URL + '/llvm/trunk', LLVM_DIR)
|
|
|
|
# Back out previous local patches. This needs to be kept around a bit
|
|
# until all bots have cycled. See https://crbug.com/755777.
|
|
files = [
|
|
'lib/Transforms/InstCombine/InstructionCombining.cpp',
|
|
'test/DebugInfo/X86/formal_parameter.ll',
|
|
'test/DebugInfo/X86/instcombine-instrinsics.ll',
|
|
'test/Transforms/InstCombine/debuginfo-skip.ll',
|
|
'test/Transforms/InstCombine/debuginfo.ll',
|
|
'test/Transforms/Util/simplify-dbg-declare-load.ll',
|
|
]
|
|
for f in [os.path.join(LLVM_DIR, f) for f in files]:
|
|
RunCommand(['svn', 'revert', f])
|
|
|
|
Checkout('Clang', LLVM_REPO_URL + '/cfe/trunk', CLANG_DIR)
|
|
if sys.platform != 'darwin':
|
|
Checkout('LLD', LLVM_REPO_URL + '/lld/trunk', LLD_DIR)
|
|
elif os.path.exists(LLD_DIR):
|
|
# In case someone sends a tryjob that temporary adds lld to the checkout,
|
|
# make sure it's not around on future builds.
|
|
RmTree(LLD_DIR)
|
|
Checkout('compiler-rt', LLVM_REPO_URL + '/compiler-rt/trunk', COMPILER_RT_DIR)
|
|
if sys.platform == 'darwin':
|
|
# clang needs a libc++ checkout, else -stdlib=libc++ won't find includes
|
|
# (i.e. this is needed for bootstrap builds).
|
|
Checkout('libcxx', LLVM_REPO_URL + '/libcxx/trunk', LIBCXX_DIR)
|
|
# We used to check out libcxxabi on OS X; we no longer need that.
|
|
if os.path.exists(LIBCXXABI_DIR):
|
|
RmTree(LIBCXXABI_DIR)
|
|
|
|
cc, cxx = None, None
|
|
libstdcpp = None
|
|
if args.gcc_toolchain: # This option is only used on Linux.
|
|
# Use the specified gcc installation for building.
|
|
cc = os.path.join(args.gcc_toolchain, 'bin', 'gcc')
|
|
cxx = os.path.join(args.gcc_toolchain, 'bin', 'g++')
|
|
|
|
if not os.access(cc, os.X_OK):
|
|
print 'Invalid --gcc-toolchain: "%s"' % args.gcc_toolchain
|
|
print '"%s" does not appear to be valid.' % cc
|
|
return 1
|
|
|
|
# Set LD_LIBRARY_PATH to make auxiliary targets (tablegen, bootstrap
|
|
# compiler, etc.) find the .so.
|
|
libstdcpp = subprocess.check_output(
|
|
[cxx, '-print-file-name=libstdc++.so.6']).rstrip()
|
|
os.environ['LD_LIBRARY_PATH'] = os.path.dirname(libstdcpp)
|
|
|
|
cflags = []
|
|
cxxflags = []
|
|
ldflags = []
|
|
|
|
base_cmake_args = ['-GNinja',
|
|
'-DCMAKE_BUILD_TYPE=Release',
|
|
'-DLLVM_ENABLE_ASSERTIONS=ON',
|
|
# Statically link MSVCRT to avoid DLL dependencies.
|
|
'-DLLVM_USE_CRT_RELEASE=MT',
|
|
]
|
|
|
|
if args.bootstrap:
|
|
print 'Building bootstrap compiler'
|
|
EnsureDirExists(LLVM_BOOTSTRAP_DIR)
|
|
os.chdir(LLVM_BOOTSTRAP_DIR)
|
|
bootstrap_args = base_cmake_args + [
|
|
'-DLLVM_TARGETS_TO_BUILD=X86;ARM;AArch64',
|
|
'-DCMAKE_INSTALL_PREFIX=' + LLVM_BOOTSTRAP_INSTALL_DIR,
|
|
'-DCMAKE_C_FLAGS=' + ' '.join(cflags),
|
|
'-DCMAKE_CXX_FLAGS=' + ' '.join(cxxflags),
|
|
]
|
|
if cc is not None: bootstrap_args.append('-DCMAKE_C_COMPILER=' + cc)
|
|
if cxx is not None: bootstrap_args.append('-DCMAKE_CXX_COMPILER=' + cxx)
|
|
RmCmakeCache('.')
|
|
RunCommand(['cmake'] + bootstrap_args + [LLVM_DIR], msvc_arch='x64')
|
|
RunCommand(['ninja'], msvc_arch='x64')
|
|
if args.run_tests:
|
|
if sys.platform == 'win32':
|
|
CopyDiaDllTo(os.path.join(LLVM_BOOTSTRAP_DIR, 'bin'))
|
|
RunCommand(['ninja', 'check-all'], msvc_arch='x64')
|
|
RunCommand(['ninja', 'install'], msvc_arch='x64')
|
|
|
|
if sys.platform == 'win32':
|
|
cc = os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'bin', 'clang-cl.exe')
|
|
cxx = os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'bin', 'clang-cl.exe')
|
|
# CMake has a hard time with backslashes in compiler paths:
|
|
# https://stackoverflow.com/questions/13050827
|
|
cc = cc.replace('\\', '/')
|
|
cxx = cxx.replace('\\', '/')
|
|
else:
|
|
cc = os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'bin', 'clang')
|
|
cxx = os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'bin', 'clang++')
|
|
|
|
if args.gcc_toolchain:
|
|
# Tell the bootstrap compiler to use a specific gcc prefix to search
|
|
# for standard library headers and shared object files.
|
|
cflags = ['--gcc-toolchain=' + args.gcc_toolchain]
|
|
cxxflags = ['--gcc-toolchain=' + args.gcc_toolchain]
|
|
print 'Building final compiler'
|
|
|
|
# Build lld with LTO. That speeds up the linker by ~10%.
|
|
# We only use LTO for Linux now.
|
|
if args.bootstrap and args.lto_lld:
|
|
print 'Building LTO lld'
|
|
if os.path.exists(LLVM_LTO_LLD_DIR):
|
|
RmTree(LLVM_LTO_LLD_DIR)
|
|
EnsureDirExists(LLVM_LTO_LLD_DIR)
|
|
os.chdir(LLVM_LTO_LLD_DIR)
|
|
|
|
# The linker expects all archive members to have symbol tables, so the
|
|
# archiver needs to be able to create symbol tables for bitcode files.
|
|
# GNU ar and ranlib don't understand bitcode files, but llvm-ar and
|
|
# llvm-ranlib do, so use them.
|
|
ar = os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'bin', 'llvm-ar')
|
|
ranlib = os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'bin', 'llvm-ranlib')
|
|
|
|
lto_cmake_args = base_cmake_args + [
|
|
'-DCMAKE_C_COMPILER=' + cc,
|
|
'-DCMAKE_CXX_COMPILER=' + cxx,
|
|
'-DCMAKE_AR=' + ar,
|
|
'-DCMAKE_RANLIB=' + ranlib,
|
|
'-DLLVM_ENABLE_LTO=thin',
|
|
'-DLLVM_USE_LINKER=lld',
|
|
'-DCMAKE_C_FLAGS=' + ' '.join(cflags),
|
|
'-DCMAKE_CXX_FLAGS=' + ' '.join(cxxflags)]
|
|
|
|
RmCmakeCache('.')
|
|
RunCommand(['cmake'] + lto_cmake_args + [LLVM_DIR])
|
|
RunCommand(['ninja', 'lld'])
|
|
|
|
|
|
# LLVM uses C++11 starting in llvm 3.5. On Linux, this means libstdc++4.7+ is
|
|
# needed, on OS X it requires libc++. clang only automatically links to libc++
|
|
# when targeting OS X 10.9+, so add stdlib=libc++ explicitly so clang can run
|
|
# on OS X versions as old as 10.7.
|
|
deployment_target = ''
|
|
|
|
if sys.platform == 'darwin' and args.bootstrap:
|
|
# When building on 10.9, /usr/include usually doesn't exist, and while
|
|
# Xcode's clang automatically sets a sysroot, self-built clangs don't.
|
|
cflags = ['-isysroot', subprocess.check_output(
|
|
['xcrun', '--show-sdk-path']).rstrip()]
|
|
cxxflags = ['-stdlib=libc++'] + cflags
|
|
ldflags += ['-stdlib=libc++']
|
|
deployment_target = '10.7'
|
|
# Running libc++ tests takes a long time. Since it was only needed for
|
|
# the install step above, don't build it as part of the main build.
|
|
# This makes running package.py over 10% faster (30 min instead of 34 min)
|
|
RmTree(LIBCXX_DIR)
|
|
|
|
# Build clang.
|
|
|
|
# If building at head, define a macro that plugins can use for #ifdefing
|
|
# out code that builds at head, but not at CLANG_REVISION or vice versa.
|
|
if use_head_revision:
|
|
cflags += ['-DLLVM_FORCE_HEAD_REVISION']
|
|
cxxflags += ['-DLLVM_FORCE_HEAD_REVISION']
|
|
|
|
# Build PDBs for archival on Windows. Don't use RelWithDebInfo since it
|
|
# has different optimization defaults than Release.
|
|
if sys.platform == 'win32':
|
|
cflags += ['/Zi']
|
|
cxxflags += ['/Zi']
|
|
ldflags += ['/DEBUG', '/OPT:REF', '/OPT:ICF']
|
|
|
|
CreateChromeToolsShim()
|
|
|
|
deployment_env = None
|
|
if deployment_target:
|
|
deployment_env = os.environ.copy()
|
|
deployment_env['MACOSX_DEPLOYMENT_TARGET'] = deployment_target
|
|
|
|
cmake_args = []
|
|
# TODO(thakis): Unconditionally append this to base_cmake_args instead once
|
|
# compiler-rt can build with clang-cl on Windows (http://llvm.org/PR23698)
|
|
cc_args = base_cmake_args if sys.platform != 'win32' else cmake_args
|
|
if cc is not None: cc_args.append('-DCMAKE_C_COMPILER=' + cc)
|
|
if cxx is not None: cc_args.append('-DCMAKE_CXX_COMPILER=' + cxx)
|
|
default_tools = ['plugins', 'blink_gc_plugin', 'translation_unit']
|
|
chrome_tools = list(set(default_tools + args.extra_tools))
|
|
cmake_args += base_cmake_args + [
|
|
'-DLLVM_ENABLE_THREADS=OFF',
|
|
'-DCMAKE_C_FLAGS=' + ' '.join(cflags),
|
|
'-DCMAKE_CXX_FLAGS=' + ' '.join(cxxflags),
|
|
'-DCMAKE_EXE_LINKER_FLAGS=' + ' '.join(ldflags),
|
|
'-DCMAKE_SHARED_LINKER_FLAGS=' + ' '.join(ldflags),
|
|
'-DCMAKE_MODULE_LINKER_FLAGS=' + ' '.join(ldflags),
|
|
'-DCMAKE_INSTALL_PREFIX=' + LLVM_BUILD_DIR,
|
|
'-DCHROMIUM_TOOLS_SRC=%s' % os.path.join(CHROMIUM_DIR, 'tools', 'clang'),
|
|
'-DCHROMIUM_TOOLS=%s' % ';'.join(chrome_tools)]
|
|
|
|
EnsureDirExists(LLVM_BUILD_DIR)
|
|
os.chdir(LLVM_BUILD_DIR)
|
|
RmCmakeCache('.')
|
|
RunCommand(['cmake'] + cmake_args + [LLVM_DIR],
|
|
msvc_arch='x64', env=deployment_env)
|
|
RunCommand(['ninja'], msvc_arch='x64')
|
|
|
|
# Copy LTO-optimized lld, if any.
|
|
if args.bootstrap and args.lto_lld:
|
|
CopyFile(os.path.join(LLVM_LTO_LLD_DIR, 'bin', 'lld'),
|
|
os.path.join(LLVM_BUILD_DIR, 'bin'))
|
|
|
|
if chrome_tools:
|
|
# If any Chromium tools were built, install those now.
|
|
RunCommand(['ninja', 'cr-install'], msvc_arch='x64')
|
|
|
|
if sys.platform == 'darwin':
|
|
# See http://crbug.com/256342
|
|
RunCommand(['strip', '-x', os.path.join(LLVM_BUILD_DIR, 'bin', 'clang')])
|
|
elif sys.platform.startswith('linux'):
|
|
RunCommand(['strip', os.path.join(LLVM_BUILD_DIR, 'bin', 'clang')])
|
|
|
|
VeryifyVersionOfBuiltClangMatchesVERSION()
|
|
|
|
# Do an out-of-tree build of compiler-rt.
|
|
# On Windows, this is used to get the 32-bit ASan run-time.
|
|
# TODO(hans): Remove once the regular build above produces this.
|
|
# On Mac and Linux, this is used to get the regular 64-bit run-time.
|
|
# Do a clobbered build due to cmake changes.
|
|
if os.path.isdir(COMPILER_RT_BUILD_DIR):
|
|
RmTree(COMPILER_RT_BUILD_DIR)
|
|
os.makedirs(COMPILER_RT_BUILD_DIR)
|
|
os.chdir(COMPILER_RT_BUILD_DIR)
|
|
# TODO(thakis): Add this once compiler-rt can build with clang-cl (see
|
|
# above).
|
|
#if args.bootstrap and sys.platform == 'win32':
|
|
# The bootstrap compiler produces 64-bit binaries by default.
|
|
#cflags += ['-m32']
|
|
#cxxflags += ['-m32']
|
|
compiler_rt_args = base_cmake_args + [
|
|
'-DLLVM_ENABLE_THREADS=OFF',
|
|
'-DCMAKE_C_FLAGS=' + ' '.join(cflags),
|
|
'-DCMAKE_CXX_FLAGS=' + ' '.join(cxxflags)]
|
|
if sys.platform == 'darwin':
|
|
compiler_rt_args += ['-DCOMPILER_RT_ENABLE_IOS=ON']
|
|
if sys.platform != 'win32':
|
|
compiler_rt_args += ['-DLLVM_CONFIG_PATH=' +
|
|
os.path.join(LLVM_BUILD_DIR, 'bin', 'llvm-config'),
|
|
'-DSANITIZER_MIN_OSX_VERSION="10.7"']
|
|
# compiler-rt is part of the llvm checkout on Windows but a stand-alone
|
|
# directory elsewhere, see the TODO above COMPILER_RT_DIR.
|
|
RmCmakeCache('.')
|
|
RunCommand(['cmake'] + compiler_rt_args +
|
|
[LLVM_DIR if sys.platform == 'win32' else COMPILER_RT_DIR],
|
|
msvc_arch='x86', env=deployment_env)
|
|
RunCommand(['ninja', 'compiler-rt'], msvc_arch='x86')
|
|
|
|
# Copy select output to the main tree.
|
|
# TODO(hans): Make this (and the .gypi and .isolate files) version number
|
|
# independent.
|
|
if sys.platform == 'win32':
|
|
platform = 'windows'
|
|
elif sys.platform == 'darwin':
|
|
platform = 'darwin'
|
|
else:
|
|
assert sys.platform.startswith('linux')
|
|
platform = 'linux'
|
|
asan_rt_lib_src_dir = os.path.join(COMPILER_RT_BUILD_DIR, 'lib', platform)
|
|
if sys.platform == 'win32':
|
|
# TODO(thakis): This too is due to compiler-rt being part of the checkout
|
|
# on Windows, see TODO above COMPILER_RT_DIR.
|
|
asan_rt_lib_src_dir = os.path.join(COMPILER_RT_BUILD_DIR, 'lib', 'clang',
|
|
VERSION, 'lib', platform)
|
|
asan_rt_lib_dst_dir = os.path.join(LLVM_BUILD_DIR, 'lib', 'clang',
|
|
VERSION, 'lib', platform)
|
|
# Blacklists:
|
|
CopyDirectoryContents(os.path.join(asan_rt_lib_src_dir, '..', '..'),
|
|
os.path.join(asan_rt_lib_dst_dir, '..', '..'),
|
|
r'^.*blacklist\.txt$')
|
|
# Headers:
|
|
if sys.platform != 'win32':
|
|
CopyDirectoryContents(
|
|
os.path.join(COMPILER_RT_BUILD_DIR, 'include/sanitizer'),
|
|
os.path.join(LLVM_BUILD_DIR, 'lib/clang', VERSION, 'include/sanitizer'))
|
|
# Static and dynamic libraries:
|
|
CopyDirectoryContents(asan_rt_lib_src_dir, asan_rt_lib_dst_dir)
|
|
if sys.platform == 'darwin':
|
|
for dylib in glob.glob(os.path.join(asan_rt_lib_dst_dir, '*.dylib')):
|
|
# Fix LC_ID_DYLIB for the ASan dynamic libraries to be relative to
|
|
# @executable_path.
|
|
# TODO(glider): this is transitional. We'll need to fix the dylib
|
|
# name either in our build system, or in Clang. See also
|
|
# http://crbug.com/344836.
|
|
subprocess.call(['install_name_tool', '-id',
|
|
'@executable_path/' + os.path.basename(dylib), dylib])
|
|
|
|
if args.with_android:
|
|
make_toolchain = os.path.join(
|
|
ANDROID_NDK_DIR, 'build', 'tools', 'make_standalone_toolchain.py')
|
|
for target_arch in ['aarch64', 'arm', 'i686']:
|
|
# Make standalone Android toolchain for target_arch.
|
|
toolchain_dir = os.path.join(
|
|
LLVM_BUILD_DIR, 'android-toolchain-' + target_arch)
|
|
RunCommand([
|
|
make_toolchain,
|
|
'--api=' + ('21' if target_arch == 'aarch64' else '19'),
|
|
'--force',
|
|
'--install-dir=%s' % toolchain_dir,
|
|
'--stl=stlport',
|
|
'--arch=' + {
|
|
'aarch64': 'arm64',
|
|
'arm': 'arm',
|
|
'i686': 'x86',
|
|
}[target_arch]])
|
|
# Android NDK r9d copies a broken unwind.h into the toolchain, see
|
|
# http://crbug.com/357890
|
|
for f in glob.glob(os.path.join(toolchain_dir, 'include/c++/*/unwind.h')):
|
|
os.remove(f)
|
|
|
|
# Build ASan runtime for Android in a separate build tree.
|
|
build_dir = os.path.join(LLVM_BUILD_DIR, 'android-' + target_arch)
|
|
if not os.path.exists(build_dir):
|
|
os.mkdir(os.path.join(build_dir))
|
|
os.chdir(build_dir)
|
|
cflags = ['--target=%s-linux-androideabi' % target_arch,
|
|
'--sysroot=%s/sysroot' % toolchain_dir,
|
|
'-B%s' % toolchain_dir]
|
|
android_args = base_cmake_args + [
|
|
'-DLLVM_ENABLE_THREADS=OFF',
|
|
'-DCMAKE_C_COMPILER=' + os.path.join(LLVM_BUILD_DIR, 'bin/clang'),
|
|
'-DCMAKE_CXX_COMPILER=' + os.path.join(LLVM_BUILD_DIR, 'bin/clang++'),
|
|
'-DLLVM_CONFIG_PATH=' + os.path.join(LLVM_BUILD_DIR, 'bin/llvm-config'),
|
|
'-DCMAKE_C_FLAGS=' + ' '.join(cflags),
|
|
'-DCMAKE_CXX_FLAGS=' + ' '.join(cflags),
|
|
'-DANDROID=1']
|
|
RmCmakeCache('.')
|
|
RunCommand(['cmake'] + android_args + [COMPILER_RT_DIR])
|
|
RunCommand(['ninja', 'libclang_rt.asan-%s-android.so' % target_arch])
|
|
|
|
# And copy it into the main build tree.
|
|
runtime = 'libclang_rt.asan-%s-android.so' % target_arch
|
|
for root, _, files in os.walk(build_dir):
|
|
if runtime in files:
|
|
shutil.copy(os.path.join(root, runtime), asan_rt_lib_dst_dir)
|
|
|
|
# Run tests.
|
|
if args.run_tests or use_head_revision:
|
|
os.chdir(LLVM_BUILD_DIR)
|
|
RunCommand(['ninja', 'cr-check-all'], msvc_arch='x64')
|
|
if args.run_tests:
|
|
if sys.platform == 'win32':
|
|
CopyDiaDllTo(os.path.join(LLVM_BUILD_DIR, 'bin'))
|
|
os.chdir(LLVM_BUILD_DIR)
|
|
RunCommand(['ninja', 'check-all'], msvc_arch='x64')
|
|
|
|
WriteStampFile(PACKAGE_VERSION)
|
|
print 'Clang update was successful.'
|
|
return 0
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description='Build Clang.')
|
|
parser.add_argument('--bootstrap', action='store_true',
|
|
help='first build clang with CC, then with itself.')
|
|
parser.add_argument('--if-needed', action='store_true',
|
|
help="run only if the script thinks clang is needed")
|
|
parser.add_argument('--force-local-build', action='store_true',
|
|
help="don't try to download prebuild binaries")
|
|
parser.add_argument('--gcc-toolchain', help='set the version for which gcc '
|
|
'version be used for building; --gcc-toolchain=/opt/foo '
|
|
'picks /opt/foo/bin/gcc')
|
|
parser.add_argument('--lto-lld', action='store_true',
|
|
help='build lld with LTO')
|
|
parser.add_argument('--llvm-force-head-revision', action='store_true',
|
|
help=('use the revision in the repo when printing '
|
|
'the revision'))
|
|
parser.add_argument('--print-revision', action='store_true',
|
|
help='print current clang revision and exit.')
|
|
parser.add_argument('--print-clang-version', action='store_true',
|
|
help='print current clang version (e.g. x.y.z) and exit.')
|
|
parser.add_argument('--run-tests', action='store_true',
|
|
help='run tests after building; only for local builds')
|
|
parser.add_argument('--extra-tools', nargs='*', default=[],
|
|
help='select additional chrome tools to build')
|
|
parser.add_argument('--without-android', action='store_false',
|
|
help='don\'t build Android ASan runtime (linux only)',
|
|
dest='with_android',
|
|
default=sys.platform.startswith('linux'))
|
|
parser.add_argument('--clang-revision', help='Clang revision to build')
|
|
parser.add_argument('--clang-sub-revision',
|
|
help='Clang sub revision to build')
|
|
args = parser.parse_args()
|
|
|
|
if args.lto_lld and not args.bootstrap:
|
|
print '--lto-lld requires --bootstrap'
|
|
return 1
|
|
if args.lto_lld and not sys.platform.startswith('linux'):
|
|
print '--lto-lld is only effective on Linux. Ignoring the option.'
|
|
args.lto_lld = False
|
|
|
|
if args.if_needed:
|
|
# TODO(thakis): Can probably remove this and --if-needed altogether.
|
|
if re.search(r'\b(make_clang_dir)=', os.environ.get('GYP_DEFINES', '')):
|
|
print 'Skipping Clang update (make_clang_dir= was set in GYP_DEFINES).'
|
|
return 0
|
|
|
|
# Get svn if we're going to use it to check the revision or do a local build.
|
|
if (use_head_revision or args.llvm_force_head_revision or
|
|
args.force_local_build):
|
|
AddSvnToPathOnWin()
|
|
|
|
global CLANG_REVISION, PACKAGE_VERSION
|
|
CLANG_REVISION = args.clang_revision
|
|
PACKAGE_VERSION = "%s-%s" % (args.clang_revision, args.clang_sub_revision)
|
|
if args.print_revision:
|
|
if use_head_revision or args.llvm_force_head_revision:
|
|
print GetSvnRevision(LLVM_DIR)
|
|
else:
|
|
print PACKAGE_VERSION
|
|
return 0
|
|
|
|
if args.print_clang_version:
|
|
sys.stdout.write(VERSION)
|
|
return 0
|
|
|
|
# Don't buffer stdout, so that print statements are immediately flushed.
|
|
# Do this only after --print-revision has been handled, else we'll get
|
|
# an error message when this script is run from gn for some reason.
|
|
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
|
|
|
|
if use_head_revision:
|
|
# Use a real revision number rather than HEAD to make sure that the stamp
|
|
# file logic works.
|
|
CLANG_REVISION = GetSvnRevision(LLVM_REPO_URL)
|
|
PACKAGE_VERSION = CLANG_REVISION + '-0'
|
|
|
|
args.force_local_build = True
|
|
if 'OS=android' not in os.environ.get('GYP_DEFINES', ''):
|
|
# Only build the Android ASan rt on ToT bots when targetting Android.
|
|
args.with_android = False
|
|
|
|
return UpdateClang(args)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|