1#!/usr/bin/env python 2# 3# Copyright 2016 Google Inc. 4# 5# Use of this source code is governed by a BSD-style license that can be 6# found in the LICENSE file. 7 8 9"""Create a Clang toolchain for Linux hosts.""" 10 11 12import argparse 13import os 14import subprocess 15import tempfile 16 17REPO = "https://llvm.googlesource.com/" 18BRANCH = "release_50" 19 20def create_asset(target_dir): 21 # CMake will sometimes barf if we pass it a relative path. 22 target_dir = os.path.abspath(target_dir) 23 24 # Build Clang, lld, compiler-rt (sanitizer support) and libc++. 25 os.chdir(tempfile.mkdtemp()) 26 subprocess.check_call(["git", "clone", "--depth", "1", "-b", 27 BRANCH, REPO + "llvm"]) 28 os.chdir("llvm/tools") 29 subprocess.check_call(["git", "clone", "--depth", "1", "-b", 30 BRANCH, REPO + "clang"]) 31 subprocess.check_call(["git", "clone", "--depth", "1", "-b", 32 BRANCH, REPO + "lld"]) 33 os.chdir("../projects") 34 subprocess.check_call(["git", "clone", "--depth", "1", "-b", 35 BRANCH, REPO + "compiler-rt"]) 36 subprocess.check_call(["git", "clone", "--depth", "1", "-b", 37 BRANCH, REPO + "libcxx"]) 38 subprocess.check_call(["git", "clone", "--depth", "1", "-b", 39 BRANCH, REPO + "libcxxabi"]) 40 os.chdir("..") 41 os.mkdir("out") 42 os.chdir("out") 43 subprocess.check_call(["cmake", "..", "-G", "Ninja", 44 "-DCMAKE_BUILD_TYPE=MinSizeRel", 45 "-DCMAKE_INSTALL_PREFIX=" + target_dir, 46 "-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON", 47 "-DLLVM_ENABLE_TERMINFO=OFF"]) 48 subprocess.check_call(["ninja", "install"]) 49 50 # Copy a couple extra files we need. 51 subprocess.check_call(["cp", "bin/llvm-symbolizer", target_dir + "/bin"]) 52 subprocess.check_call(["cp", "bin/llvm-profdata", target_dir + "/bin"]) 53 subprocess.check_call(["cp", "bin/llvm-cov", target_dir + "/bin"]) 54 libstdcpp = subprocess.check_output(["c++", 55 "-print-file-name=libstdc++.so.6"]) 56 subprocess.check_call(["cp", libstdcpp.strip(), target_dir + "/lib"]) 57 58 # Finally, build libc++ for MSAN bots using the Clang we just built. 59 os.mkdir("../msan_out") 60 os.chdir("../msan_out") 61 subprocess.check_call(["cmake", "..", "-G", "Ninja", 62 "-DCMAKE_BUILD_TYPE=MinSizeRel", 63 "-DCMAKE_C_COMPILER=" + target_dir + "/bin/clang", 64 "-DCMAKE_CXX_COMPILER=" + target_dir + "/bin/clang++", 65 "-DLLVM_USE_SANITIZER=MemoryWithOrigins"]) 66 subprocess.check_call(["ninja", "cxx"]) 67 subprocess.check_call(["cp", "-r", "lib", target_dir + "/msan"]) 68 69 70def main(): 71 parser = argparse.ArgumentParser() 72 parser.add_argument('--target_dir', '-t', required=True) 73 args = parser.parse_args() 74 create_asset(args.target_dir) 75 76 77if __name__ == '__main__': 78 main() 79