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#!/usr/bin/env python
#
# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Create a Clang toolchain for Linux hosts."""
import argparse
import os
import subprocess
import tempfile
REPO = "https://llvm.googlesource.com/"
BRANCH = "release_50"
def create_asset(target_dir):
# CMake will sometimes barf if we pass it a relative path.
target_dir = os.path.abspath(target_dir)
# Build Clang, lld, compiler-rt (sanitizer support) and libc++.
os.chdir(tempfile.mkdtemp())
subprocess.check_call(["git", "clone", "--depth", "1", "-b",
BRANCH, REPO + "llvm"])
os.chdir("llvm/tools")
subprocess.check_call(["git", "clone", "--depth", "1", "-b",
BRANCH, REPO + "clang"])
subprocess.check_call(["git", "clone", "--depth", "1", "-b",
BRANCH, REPO + "lld"])
os.chdir("../projects")
subprocess.check_call(["git", "clone", "--depth", "1", "-b",
BRANCH, REPO + "compiler-rt"])
subprocess.check_call(["git", "clone", "--depth", "1", "-b",
BRANCH, REPO + "libcxx"])
subprocess.check_call(["git", "clone", "--depth", "1", "-b",
BRANCH, REPO + "libcxxabi"])
os.chdir("..")
os.mkdir("out")
os.chdir("out")
subprocess.check_call(["cmake", "..", "-G", "Ninja",
"-DCMAKE_BUILD_TYPE=MinSizeRel",
"-DCMAKE_INSTALL_PREFIX=" + target_dir,
"-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON",
"-DLLVM_ENABLE_TERMINFO=OFF"])
subprocess.check_call(["ninja", "install"])
# Copy a couple extra files we need.
subprocess.check_call(["cp", "bin/llvm-symbolizer", target_dir + "/bin"])
subprocess.check_call(["cp", "bin/llvm-profdata", target_dir + "/bin"])
subprocess.check_call(["cp", "bin/llvm-cov", target_dir + "/bin"])
libstdcpp = subprocess.check_output(["c++",
"-print-file-name=libstdc++.so.6"])
subprocess.check_call(["cp", libstdcpp.strip(), target_dir + "/lib"])
# Finally, build libc++ for MSAN bots using the Clang we just built.
os.mkdir("../msan_out")
os.chdir("../msan_out")
subprocess.check_call(["cmake", "..", "-G", "Ninja",
"-DCMAKE_BUILD_TYPE=MinSizeRel",
"-DCMAKE_C_COMPILER=" + target_dir + "/bin/clang",
"-DCMAKE_CXX_COMPILER=" + target_dir + "/bin/clang++",
"-DLLVM_USE_SANITIZER=MemoryWithOrigins"])
subprocess.check_call(["ninja", "cxx"])
subprocess.check_call(["cp", "-r", "lib", target_dir + "/msan"])
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--target_dir', '-t', required=True)
args = parser.parse_args()
create_asset(args.target_dir)
if __name__ == '__main__':
main()
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