blob: d83afe753eca82c0318f8a21a407b6333e98ec5b [file] [log] [blame]
#!/bin/bash
# Copyright 2018 The Cobalt Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This script downloads and compiles clang version 3.6.
set -e
toolchain_name="clang"
version="3.6"
toolchain_folder="x86_64-linux-gnu-${toolchain_name}-${version}"
branch="release_36"
binary_path="llvm/Release+Asserts/bin/clang++"
# This version of clang depends on libstdc++-7, version 7.4.0.
# The package "libstdc++-7-dev" provides that version.
libstdcxx_version="7.4.0"
libstdcxx_path="libstdc++-7"
libstdcxx_symlink_folder="${libstdcxx_path}/lib/gcc/x86_64-linux-gnu"
symlink_path="${libstdcxx_symlink_folder}/${libstdcxx_version}"
build_duration="about 20 minutes"
scriptfolder=$(dirname $(realpath $0))
cd ${scriptfolder}
source ../../toolchain_paths.sh
(
# Build a small symlink forest for the clang compiler to point to with the
# '--gcc-toolchain' parameter to allow it to build against a non-default version
# of libstdc++.
mkdir -p "${libstdcxx_symlink_folder}"
ln -s /usr/include "${libstdcxx_path}"
ln -s "/usr/lib/gcc/x86_64-linux-gnu/${libstdcxx_version}" ${libstdcxx_symlink_folder}
git clone --branch ${branch} https://git.llvm.org/git/llvm.git/
cd llvm/tools/
git clone --branch ${branch} https://git.llvm.org/git/clang.git/
cd ../projects/
git clone --branch ${branch} https://git.llvm.org/git/compiler-rt.git/
cd ${toolchain_path}
# Patch for compiling with gcc newer than version 7.
patch -p1 <${scriptfolder}/hasmd.patch
patch -p1 <${scriptfolder}/ustat_size.patch
patch -d llvm/projects/compiler-rt/ -p0 <${scriptfolder}/sigaltstack.patch
cd llvm
# Specify a bootstrap compiler that is known to be available.
CC=gcc CXX=g++ \
./configure --enable-optimized --disable-doxygen --prefix=${PWD}/bin
make -j"$(nproc)"
cd ${toolchain_path}
ls -l ${toolchain_binary}
${toolchain_binary} --version
) >${logfile} 2>&1