Index: tools/clang/scripts/update.py |
diff --git a/tools/clang/scripts/update.py b/tools/clang/scripts/update.py |
new file mode 100755 |
index 0000000000000000000000000000000000000000..100bdec5cc88dd60957affff4f16c1ffb2d6eda4 |
--- /dev/null |
+++ b/tools/clang/scripts/update.py |
@@ -0,0 +1,909 @@ |
+#!/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. |
+ |
+"""This script is used to download prebuilt clang binaries. |
+ |
+It is also used by package.py to build the prebuilt clang binaries.""" |
+ |
+import argparse |
+import distutils.spawn |
+import glob |
+import os |
+import pipes |
+import re |
+import shutil |
+import subprocess |
+import stat |
+import sys |
+import tarfile |
+import tempfile |
+import time |
+import urllib2 |
+import zipfile |
+ |
+ |
+# Do NOT CHANGE this if you don't know what you're doing -- see |
+# https://chromium.googlesource.com/chromium/src/+/master/docs/updating_clang.md |
+# Reverting problematic clang rolls is safe, though. |
+CLANG_REVISION = '282487' |
+ |
+use_head_revision = 'LLVM_FORCE_HEAD_REVISION' in os.environ |
+if use_head_revision: |
+ CLANG_REVISION = 'HEAD' |
+ |
+# This is incremented when pushing a new build of Clang at the same revision. |
+CLANG_SUB_REVISION=1 |
+ |
+PACKAGE_VERSION = "%s-%s" % (CLANG_REVISION, CLANG_SUB_REVISION) |
+ |
+# Path constants. (All of these should be absolute paths.) |
+THIS_DIR = os.path.abspath(os.path.dirname(__file__)) |
+CHROMIUM_DIR = os.path.abspath(os.path.join(THIS_DIR, '..', '..', '..')) |
+THIRD_PARTY_DIR = os.path.join(CHROMIUM_DIR, 'third_party') |
+LLVM_DIR = os.path.join(THIRD_PARTY_DIR, 'llvm') |
+LLVM_BOOTSTRAP_DIR = os.path.join(THIRD_PARTY_DIR, 'llvm-bootstrap') |
+LLVM_BOOTSTRAP_INSTALL_DIR = os.path.join(THIRD_PARTY_DIR, |
+ 'llvm-bootstrap-install') |
+LLVM_LTO_GOLD_PLUGIN_DIR = os.path.join(THIRD_PARTY_DIR, 'llvm-lto-gold-plugin') |
+CHROME_TOOLS_SHIM_DIR = os.path.join(LLVM_DIR, 'tools', 'chrometools') |
+LLVM_BUILD_DIR = os.path.join(CHROMIUM_DIR, 'third_party', 'llvm-build', |
+ 'Release+Asserts') |
+COMPILER_RT_BUILD_DIR = os.path.join(LLVM_BUILD_DIR, 'compiler-rt') |
+CLANG_DIR = os.path.join(LLVM_DIR, 'tools', 'clang') |
+LLD_DIR = os.path.join(LLVM_DIR, 'tools', 'lld') |
+# compiler-rt is built as part of the regular LLVM build on Windows to get |
+# the 64-bit runtime, and out-of-tree elsewhere. |
+# TODO(thakis): Try to unify this. |
+if sys.platform == 'win32': |
+ COMPILER_RT_DIR = os.path.join(LLVM_DIR, 'projects', 'compiler-rt') |
+else: |
+ COMPILER_RT_DIR = os.path.join(LLVM_DIR, 'compiler-rt') |
+LIBCXX_DIR = os.path.join(LLVM_DIR, 'projects', 'libcxx') |
+LIBCXXABI_DIR = os.path.join(LLVM_DIR, 'projects', 'libcxxabi') |
+LLVM_BUILD_TOOLS_DIR = os.path.abspath( |
+ os.path.join(LLVM_DIR, '..', 'llvm-build-tools')) |
+STAMP_FILE = os.path.normpath( |
+ os.path.join(LLVM_DIR, '..', 'llvm-build', 'cr_build_revision')) |
+BINUTILS_DIR = os.path.join(THIRD_PARTY_DIR, 'binutils') |
+BINUTILS_BIN_DIR = os.path.join(BINUTILS_DIR, BINUTILS_DIR, |
+ 'Linux_x64', 'Release', 'bin') |
+BFD_PLUGINS_DIR = os.path.join(BINUTILS_DIR, 'Linux_x64', 'Release', |
+ 'lib', 'bfd-plugins') |
+VERSION = '4.0.0' |
+ANDROID_NDK_DIR = os.path.join( |
+ CHROMIUM_DIR, 'third_party', 'android_tools', 'ndk') |
+ |
+# URL for pre-built binaries. |
+CDS_URL = os.environ.get('CDS_CLANG_BUCKET_OVERRIDE', |
+ 'https://commondatastorage.googleapis.com/chromium-browser-clang') |
+ |
+LLVM_REPO_URL='https://llvm.org/svn/llvm-project' |
+if 'LLVM_REPO_URL' in os.environ: |
+ LLVM_REPO_URL = os.environ['LLVM_REPO_URL'] |
+ |
+# Bump after VC updates. |
+DIA_DLL = { |
+ '2013': 'msdia120.dll', |
+ '2015': 'msdia140.dll', |
+} |
+ |
+ |
+def DownloadUrl(url, output_file): |
+ """Download url into output_file.""" |
+ CHUNK_SIZE = 4096 |
+ TOTAL_DOTS = 10 |
+ num_retries = 3 |
+ retry_wait_s = 5 # Doubled at each retry. |
+ |
+ while True: |
+ try: |
+ sys.stdout.write('Downloading %s ' % url) |
+ sys.stdout.flush() |
+ response = urllib2.urlopen(url) |
+ total_size = int(response.info().getheader('Content-Length').strip()) |
+ bytes_done = 0 |
+ dots_printed = 0 |
+ while True: |
+ chunk = response.read(CHUNK_SIZE) |
+ if not chunk: |
+ break |
+ output_file.write(chunk) |
+ bytes_done += len(chunk) |
+ num_dots = TOTAL_DOTS * bytes_done / total_size |
+ sys.stdout.write('.' * (num_dots - dots_printed)) |
+ sys.stdout.flush() |
+ dots_printed = num_dots |
+ if bytes_done != total_size: |
+ raise urllib2.URLError("only got %d of %d bytes" % |
+ (bytes_done, total_size)) |
+ print ' Done.' |
+ return |
+ except urllib2.URLError as e: |
+ sys.stdout.write('\n') |
+ print e |
+ if num_retries == 0 or isinstance(e, urllib2.HTTPError) and e.code == 404: |
+ raise e |
+ num_retries -= 1 |
+ print 'Retrying in %d s ...' % retry_wait_s |
+ time.sleep(retry_wait_s) |
+ retry_wait_s *= 2 |
+ |
+ |
+def EnsureDirExists(path): |
+ if not os.path.exists(path): |
+ print "Creating directory %s" % path |
+ os.makedirs(path) |
+ |
+ |
+def DownloadAndUnpack(url, output_dir): |
+ with tempfile.TemporaryFile() as f: |
+ DownloadUrl(url, f) |
+ f.seek(0) |
+ EnsureDirExists(output_dir) |
+ if url.endswith('.zip'): |
+ zipfile.ZipFile(f).extractall(path=output_dir) |
+ else: |
+ tarfile.open(mode='r:gz', fileobj=f).extractall(path=output_dir) |
+ |
+ |
+def ReadStampFile(path=STAMP_FILE): |
+ """Return the contents of the stamp file, or '' if it doesn't exist.""" |
+ try: |
+ with open(path, 'r') as f: |
+ return f.read().rstrip() |
+ except IOError: |
+ return '' |
+ |
+ |
+def WriteStampFile(s, path=STAMP_FILE): |
+ """Write s to the stamp file.""" |
+ EnsureDirExists(os.path.dirname(path)) |
+ with open(path, 'w') as f: |
+ f.write(s) |
+ f.write('\n') |
+ |
+ |
+def GetSvnRevision(svn_repo): |
+ """Returns current revision of the svn repo at svn_repo.""" |
+ if sys.platform == 'darwin': |
+ # mac_files toolchain must be set for hermetic builds. |
+ root = os.path.dirname(os.path.dirname(os.path.dirname( |
+ os.path.dirname(__file__)))) |
+ sys.path.append(os.path.join(root, 'build')) |
+ import mac_toolchain |
+ |
+ mac_toolchain.SetToolchainEnvironment() |
+ svn_info = subprocess.check_output('svn info ' + svn_repo, shell=True) |
+ m = re.search(r'Revision: (\d+)', svn_info) |
+ return m.group(1) |
+ |
+ |
+def RmTree(dir): |
+ """Delete dir.""" |
+ def ChmodAndRetry(func, path, _): |
+ # Subversion can leave read-only files around. |
+ if not os.access(path, os.W_OK): |
+ os.chmod(path, stat.S_IWUSR) |
+ return func(path) |
+ raise |
+ |
+ shutil.rmtree(dir, onerror=ChmodAndRetry) |
+ |
+ |
+def RmCmakeCache(dir): |
+ """Delete CMake cache related files from dir.""" |
+ for dirpath, dirs, files in os.walk(dir): |
+ if 'CMakeCache.txt' in files: |
+ os.remove(os.path.join(dirpath, 'CMakeCache.txt')) |
+ if 'CMakeFiles' in dirs: |
+ RmTree(os.path.join(dirpath, 'CMakeFiles')) |
+ |
+ |
+def RunCommand(command, msvc_arch=None, env=None, fail_hard=True): |
+ """Run command and return success (True) or failure; or if fail_hard is |
+ True, exit on failure. If msvc_arch is set, runs the command in a |
+ shell with the msvc tools for that architecture.""" |
+ |
+ if msvc_arch and sys.platform == 'win32': |
+ command = GetVSVersion().SetupScript(msvc_arch) + ['&&'] + command |
+ |
+ # https://docs.python.org/2/library/subprocess.html: |
+ # "On Unix with shell=True [...] if args is a sequence, the first item |
+ # specifies the command string, and any additional items will be treated as |
+ # additional arguments to the shell itself. That is to say, Popen does the |
+ # equivalent of: |
+ # Popen(['/bin/sh', '-c', args[0], args[1], ...])" |
+ # |
+ # We want to pass additional arguments to command[0], not to the shell, |
+ # so manually join everything into a single string. |
+ # Annoyingly, for "svn co url c:\path", pipes.quote() thinks that it should |
+ # quote c:\path but svn can't handle quoted paths on Windows. Since on |
+ # Windows follow-on args are passed to args[0] instead of the shell, don't |
+ # do the single-string transformation there. |
+ if sys.platform != 'win32': |
+ command = ' '.join([pipes.quote(c) for c in command]) |
+ print 'Running', command |
+ if subprocess.call(command, env=env, shell=True) == 0: |
+ return True |
+ print 'Failed.' |
+ if fail_hard: |
+ sys.exit(1) |
+ return False |
+ |
+ |
+def CopyFile(src, dst): |
+ """Copy a file from src to dst.""" |
+ print "Copying %s to %s" % (src, dst) |
+ shutil.copy(src, dst) |
+ |
+ |
+def CopyDirectoryContents(src, dst, filename_filter=None): |
+ """Copy the files from directory src to dst |
+ with an optional filename filter.""" |
+ dst = os.path.realpath(dst) # realpath() in case dst ends in /.. |
+ EnsureDirExists(dst) |
+ for root, _, files in os.walk(src): |
+ for f in files: |
+ if filename_filter and not re.match(filename_filter, f): |
+ continue |
+ CopyFile(os.path.join(root, f), dst) |
+ |
+ |
+def Checkout(name, url, dir): |
+ """Checkout the SVN module at url into dir. Use name for the log message.""" |
+ print "Checking out %s r%s into '%s'" % (name, CLANG_REVISION, dir) |
+ |
+ command = ['svn', 'checkout', '--force', url + '@' + CLANG_REVISION, dir] |
+ if RunCommand(command, fail_hard=False): |
+ return |
+ |
+ if os.path.isdir(dir): |
+ print "Removing %s." % (dir) |
+ RmTree(dir) |
+ |
+ print "Retrying." |
+ RunCommand(command) |
+ |
+ |
+def DeleteChromeToolsShim(): |
+ OLD_SHIM_DIR = os.path.join(LLVM_DIR, 'tools', 'zzz-chrometools') |
+ shutil.rmtree(OLD_SHIM_DIR, ignore_errors=True) |
+ shutil.rmtree(CHROME_TOOLS_SHIM_DIR, ignore_errors=True) |
+ |
+ |
+def CreateChromeToolsShim(): |
+ """Hooks the Chrome tools into the LLVM build. |
+ |
+ Several Chrome tools have dependencies on LLVM/Clang libraries. The LLVM build |
+ detects implicit tools in the tools subdirectory, so this helper install a |
+ shim CMakeLists.txt that forwards to the real directory for the Chrome tools. |
+ |
+ Note that the shim directory name intentionally has no - or _. The implicit |
+ tool detection logic munges them in a weird way.""" |
+ assert not any(i in os.path.basename(CHROME_TOOLS_SHIM_DIR) for i in '-_') |
+ os.mkdir(CHROME_TOOLS_SHIM_DIR) |
+ with file(os.path.join(CHROME_TOOLS_SHIM_DIR, 'CMakeLists.txt'), 'w') as f: |
+ f.write('# Automatically generated by tools/clang/scripts/update.py. ' + |
+ 'Do not edit.\n') |
+ f.write('# Since tools/clang is located in another directory, use the \n') |
+ f.write('# two arg version to specify where build artifacts go. CMake\n') |
+ f.write('# disallows reuse of the same binary dir for multiple source\n') |
+ f.write('# dirs, so the build artifacts need to go into a subdirectory.\n') |
+ f.write('# dirs, so the build artifacts need to go into a subdirectory.\n') |
+ f.write('if (CHROMIUM_TOOLS_SRC)\n') |
+ f.write(' add_subdirectory(${CHROMIUM_TOOLS_SRC} ' + |
+ '${CMAKE_CURRENT_BINARY_DIR}/a)\n') |
+ f.write('endif (CHROMIUM_TOOLS_SRC)\n') |
+ |
+ |
+def DownloadHostGcc(args): |
+ """Downloads gcc 4.8.5 and makes sure args.gcc_toolchain is set.""" |
+ if not sys.platform.startswith('linux') or args.gcc_toolchain: |
+ return |
+ # Unconditionally download a prebuilt gcc to guarantee the included libstdc++ |
+ # works on Ubuntu Precise. |
+ gcc_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'gcc485precise') |
+ if not os.path.exists(gcc_dir): |
+ print 'Downloading pre-built GCC 4.8.5...' |
+ DownloadAndUnpack( |
+ CDS_URL + '/tools/gcc485precise.tgz', LLVM_BUILD_TOOLS_DIR) |
+ args.gcc_toolchain = gcc_dir |
+ |
+ |
+def AddCMakeToPath(): |
+ """Download CMake and add it to PATH.""" |
+ if sys.platform == 'win32': |
+ zip_name = 'cmake-3.4.3-win32-x86.zip' |
+ cmake_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, |
+ 'cmake-3.4.3-win32-x86', 'bin') |
+ else: |
+ suffix = 'Darwin' if sys.platform == 'darwin' else 'Linux' |
+ zip_name = 'cmake343_%s.tgz' % suffix |
+ cmake_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'cmake343', 'bin') |
+ if not os.path.exists(cmake_dir): |
+ DownloadAndUnpack(CDS_URL + '/tools/' + zip_name, LLVM_BUILD_TOOLS_DIR) |
+ os.environ['PATH'] = cmake_dir + os.pathsep + os.environ.get('PATH', '') |
+ |
+ |
+def AddGnuWinToPath(): |
+ """Download some GNU win tools and add them to PATH.""" |
+ if sys.platform != 'win32': |
+ return |
+ |
+ gnuwin_dir = os.path.join(LLVM_BUILD_TOOLS_DIR, 'gnuwin') |
+ GNUWIN_VERSION = '5' |
+ GNUWIN_STAMP = os.path.join(gnuwin_dir, 'stamp') |
+ if ReadStampFile(GNUWIN_STAMP) == GNUWIN_VERSION: |
+ print 'GNU Win tools already up to date.' |
+ else: |
+ zip_name = 'gnuwin-%s.zip' % GNUWIN_VERSION |
+ DownloadAndUnpack(CDS_URL + '/tools/' + zip_name, LLVM_BUILD_TOOLS_DIR) |
+ WriteStampFile(GNUWIN_VERSION, GNUWIN_STAMP) |
+ |
+ os.environ['PATH'] = gnuwin_dir + os.pathsep + os.environ.get('PATH', '') |
+ |
+ |
+vs_version = None |
+def GetVSVersion(): |
+ global vs_version |
+ if vs_version: |
+ return vs_version |
+ |
+ # Try using the toolchain in depot_tools. |
+ # This sets environment variables used by SelectVisualStudioVersion below. |
+ sys.path.append(os.path.join(CHROMIUM_DIR, 'build')) |
+ import vs_toolchain |
+ vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs() |
+ |
+ # Use gyp to find the MSVS installation, either in depot_tools as per above, |
+ # or a system-wide installation otherwise. |
+ sys.path.append(os.path.join(CHROMIUM_DIR, 'tools', 'gyp', 'pylib')) |
+ import gyp.MSVSVersion |
+ vs_version = gyp.MSVSVersion.SelectVisualStudioVersion( |
+ vs_toolchain.GetVisualStudioVersion()) |
+ return vs_version |
+ |
+ |
+def CopyDiaDllTo(target_dir): |
+ # This script always wants to use the 64-bit msdia*.dll. |
+ dia_path = os.path.join(GetVSVersion().Path(), 'DIA SDK', 'bin', 'amd64') |
+ dia_dll = os.path.join(dia_path, DIA_DLL[GetVSVersion().ShortName()]) |
+ CopyFile(dia_dll, target_dir) |
+ |
+ |
+def VeryifyVersionOfBuiltClangMatchesVERSION(): |
+ """Checks that `clang --version` outputs VERSION. If this fails, VERSION |
+ in this file is out-of-date and needs to be updated (possibly in an |
+ `if use_head_revision:` block in main() first).""" |
+ clang = os.path.join(LLVM_BUILD_DIR, 'bin', 'clang') |
+ if sys.platform == 'win32': |
+ # TODO: Parse `clang-cl /?` output for built clang's version and check that |
+ # to check the binary we're actually shipping? But clang-cl.exe is just |
+ # a copy of clang.exe, so this does check the same thing. |
+ clang += '.exe' |
+ version_out = subprocess.check_output([clang, '--version']) |
+ version_out = re.match(r'clang version ([0-9.]+)', version_out).group(1) |
+ if version_out != VERSION: |
+ print ('unexpected clang version %s (not %s), update VERSION in update.py' |
+ % (version_out, VERSION)) |
+ sys.exit(1) |
+ |
+ |
+def UpdateClang(args): |
+ print 'Updating Clang to %s...' % PACKAGE_VERSION |
+ |
+ need_gold_plugin = 'LLVM_DOWNLOAD_GOLD_PLUGIN' in os.environ or ( |
+ sys.platform.startswith('linux') and |
+ 'buildtype=Official' in os.environ.get('GYP_DEFINES', '') and |
+ 'branding=Chrome' in os.environ.get('GYP_DEFINES', '')) |
+ |
+ if ReadStampFile() == PACKAGE_VERSION and not args.force_local_build: |
+ print 'Clang is already up to date.' |
+ if not need_gold_plugin or os.path.exists( |
+ os.path.join(LLVM_BUILD_DIR, "lib/LLVMgold.so")): |
+ return 0 |
+ |
+ # Reset the stamp file in case the build is unsuccessful. |
+ WriteStampFile('') |
+ |
+ if not args.force_local_build: |
+ cds_file = "clang-%s.tgz" % PACKAGE_VERSION |
+ if sys.platform == 'win32' or sys.platform == 'cygwin': |
+ cds_full_url = CDS_URL + '/Win/' + cds_file |
+ elif sys.platform == 'darwin': |
+ cds_full_url = CDS_URL + '/Mac/' + cds_file |
+ else: |
+ assert sys.platform.startswith('linux') |
+ cds_full_url = CDS_URL + '/Linux_x64/' + cds_file |
+ |
+ print 'Downloading prebuilt clang' |
+ if os.path.exists(LLVM_BUILD_DIR): |
+ RmTree(LLVM_BUILD_DIR) |
+ try: |
+ DownloadAndUnpack(cds_full_url, LLVM_BUILD_DIR) |
+ print 'clang %s unpacked' % PACKAGE_VERSION |
+ if sys.platform == 'win32': |
+ CopyDiaDllTo(os.path.join(LLVM_BUILD_DIR, 'bin')) |
+ # Download the gold plugin if requested to by an environment variable. |
+ # This is used by the CFI ClusterFuzz bot, and it's required for official |
+ # builds on linux. |
+ if need_gold_plugin: |
+ RunCommand(['python', CHROMIUM_DIR+'/build/download_gold_plugin.py']) |
+ WriteStampFile(PACKAGE_VERSION) |
+ return 0 |
+ except urllib2.URLError: |
+ print 'Failed to download prebuilt clang %s' % cds_file |
+ print 'Use --force-local-build if you want to build locally.' |
+ print 'Exiting.' |
+ return 1 |
+ |
+ if args.with_android and not os.path.exists(ANDROID_NDK_DIR): |
+ print 'Android NDK not found at ' + ANDROID_NDK_DIR |
+ print 'The Android NDK is needed to build a Clang whose -fsanitize=address' |
+ print 'works on Android. See ' |
+ print 'https://www.chromium.org/developers/how-tos/android-build-instructions' |
+ print 'for how to install the NDK, or pass --without-android.' |
+ return 1 |
+ |
+ DownloadHostGcc(args) |
+ AddCMakeToPath() |
+ AddGnuWinToPath() |
+ |
+ DeleteChromeToolsShim() |
+ |
+ Checkout('LLVM', LLVM_REPO_URL + '/llvm/trunk', LLVM_DIR) |
+ Checkout('Clang', LLVM_REPO_URL + '/cfe/trunk', CLANG_DIR) |
+ if sys.platform == 'win32' or use_head_revision: |
+ Checkout('LLD', LLVM_REPO_URL + '/lld/trunk', 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', |
+ '-DLLVM_ENABLE_THREADS=OFF', |
+ '-DLLVM_ENABLE_TIMESTAMPS=OFF', |
+ # Statically link MSVCRT to avoid DLL dependencies. |
+ '-DLLVM_USE_CRT_RELEASE=MT', |
+ ] |
+ |
+ binutils_incdir = '' |
+ if sys.platform.startswith('linux'): |
+ binutils_incdir = os.path.join(BINUTILS_DIR, 'Linux_x64/Release/include') |
+ |
+ if args.bootstrap: |
+ print 'Building bootstrap compiler' |
+ EnsureDirExists(LLVM_BOOTSTRAP_DIR) |
+ os.chdir(LLVM_BOOTSTRAP_DIR) |
+ bootstrap_args = base_cmake_args + [ |
+ '-DLLVM_BINUTILS_INCDIR=' + binutils_incdir, |
+ '-DLLVM_TARGETS_TO_BUILD=host', |
+ '-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 args.gcc_toolchain: |
+ # Copy that gcc's stdlibc++.so.6 to the build dir, so the bootstrap |
+ # compiler can start. |
+ CopyFile(libstdcpp, os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'lib')) |
+ |
+ 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 LLVM gold plugin with LTO. That speeds up the linker by ~10%. |
+ # We only use LTO for Linux now. |
+ if args.bootstrap and args.lto_gold_plugin: |
+ print 'Building LTO LLVM Gold plugin' |
+ if os.path.exists(LLVM_LTO_GOLD_PLUGIN_DIR): |
+ RmTree(LLVM_LTO_GOLD_PLUGIN_DIR) |
+ EnsureDirExists(LLVM_LTO_GOLD_PLUGIN_DIR) |
+ os.chdir(LLVM_LTO_GOLD_PLUGIN_DIR) |
+ |
+ # Create a symlink to LLVMgold.so build in the previous step so that ar |
+ # and ranlib could find it while linking LLVMgold.so with LTO. |
+ EnsureDirExists(BFD_PLUGINS_DIR) |
+ RunCommand(['ln', '-sf', |
+ os.path.join(LLVM_BOOTSTRAP_INSTALL_DIR, 'lib', 'LLVMgold.so'), |
+ os.path.join(BFD_PLUGINS_DIR, 'LLVMgold.so')]) |
+ |
+ lto_cflags = ['-flto'] |
+ lto_ldflags = ['-fuse-ld=gold'] |
+ if args.gcc_toolchain: |
+ # Tell the bootstrap compiler to use a specific gcc prefix to search |
+ # for standard library headers and shared object files. |
+ lto_cflags += ['--gcc-toolchain=' + args.gcc_toolchain] |
+ lto_cmake_args = base_cmake_args + [ |
+ '-DLLVM_BINUTILS_INCDIR=' + binutils_incdir, |
+ '-DCMAKE_C_COMPILER=' + cc, |
+ '-DCMAKE_CXX_COMPILER=' + cxx, |
+ '-DCMAKE_C_FLAGS=' + ' '.join(lto_cflags), |
+ '-DCMAKE_CXX_FLAGS=' + ' '.join(lto_cflags), |
+ '-DCMAKE_EXE_LINKER_FLAGS=' + ' '.join(lto_ldflags), |
+ '-DCMAKE_SHARED_LINKER_FLAGS=' + ' '.join(lto_ldflags), |
+ '-DCMAKE_MODULE_LINKER_FLAGS=' + ' '.join(lto_ldflags)] |
+ |
+ # We need to use the proper binutils which support LLVM Gold plugin. |
+ lto_env = os.environ.copy() |
+ lto_env['PATH'] = BINUTILS_BIN_DIR + os.pathsep + lto_env.get('PATH', '') |
+ |
+ RmCmakeCache('.') |
+ RunCommand(['cmake'] + lto_cmake_args + [LLVM_DIR], env=lto_env) |
+ RunCommand(['ninja', 'LLVMgold'], env=lto_env) |
+ |
+ |
+ # 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'] |
+ |
+ 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) |
+ cmake_args += base_cmake_args + [ |
+ '-DLLVM_BINUTILS_INCDIR=' + binutils_incdir, |
+ '-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, |
+ # TODO(thakis): Remove this once official builds pass -Wl,--build-id |
+ # explicitly, https://crbug.com/622775 |
+ '-DENABLE_LINKER_BUILD_ID=ON', |
+ '-DCHROMIUM_TOOLS_SRC=%s' % os.path.join(CHROMIUM_DIR, 'tools', 'clang'), |
+ '-DCHROMIUM_TOOLS=%s' % ';'.join(args.tools)] |
+ |
+ EnsureDirExists(LLVM_BUILD_DIR) |
+ os.chdir(LLVM_BUILD_DIR) |
+ RmCmakeCache('.') |
+ RunCommand(['cmake'] + cmake_args + [LLVM_DIR], |
+ msvc_arch='x64', env=deployment_env) |
+ |
+ if args.gcc_toolchain: |
+ # Copy in the right stdlibc++.so.6 so clang can start. |
+ if not os.path.exists(os.path.join(LLVM_BUILD_DIR, 'lib')): |
+ os.mkdir(os.path.join(LLVM_BUILD_DIR, 'lib')) |
+ libstdcpp = subprocess.check_output( |
+ [cxx] + cxxflags + ['-print-file-name=libstdc++.so.6']).rstrip() |
+ CopyFile(libstdcpp, os.path.join(LLVM_BUILD_DIR, 'lib')) |
+ |
+ RunCommand(['ninja'], msvc_arch='x64') |
+ |
+ if args.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 + [ |
+ '-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 sys.platform == 'win32': |
+ # Make an extra copy of the sanitizer headers, to be put on the include path |
+ # of the fallback compiler. |
+ sanitizer_include_dir = os.path.join(LLVM_BUILD_DIR, 'lib', 'clang', |
+ VERSION, 'include', 'sanitizer') |
+ aux_sanitizer_include_dir = os.path.join(LLVM_BUILD_DIR, 'lib', 'clang', |
+ VERSION, 'include_sanitizer', |
+ 'sanitizer') |
+ EnsureDirExists(aux_sanitizer_include_dir) |
+ for _, _, files in os.walk(sanitizer_include_dir): |
+ for f in files: |
+ CopyFile(os.path.join(sanitizer_include_dir, f), |
+ aux_sanitizer_include_dir) |
+ |
+ 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 + [ |
+ '-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-gold-plugin', action='store_true', |
+ help='build LLVM Gold plugin 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('--tools', nargs='*', |
+ help='select which chrome tools to build', |
+ default=['plugins', 'blink_gc_plugin']) |
+ 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')) |
+ args = parser.parse_args() |
+ |
+ if args.lto_gold_plugin and not args.bootstrap: |
+ print '--lto-gold-plugin requires --bootstrap' |
+ return 1 |
+ if args.lto_gold_plugin and not sys.platform.startswith('linux'): |
+ print '--lto-gold-plugin is only effective on Linux. Ignoring the option.' |
+ args.lto_gold_plugin = False |
+ |
+ if args.if_needed: |
+ is_clang_required = False |
+ # clang is always used on Mac and Linux. |
+ if sys.platform == 'darwin' or sys.platform.startswith('linux'): |
+ is_clang_required = True |
+ # clang requested via $GYP_DEFINES. |
+ if re.search(r'\b(clang|asan|lsan|msan|tsan)=1', |
+ os.environ.get('GYP_DEFINES', '')): |
+ is_clang_required = True |
+ # clang previously downloaded, keep it up to date. |
+ # If you don't want this, delete third_party/llvm-build on your machine. |
+ if os.path.isdir(LLVM_BUILD_DIR): |
+ is_clang_required = True |
+ if not is_clang_required: |
+ return 0 |
+ 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 |
+ |
+ global CLANG_REVISION, PACKAGE_VERSION |
+ 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()) |