CentOS 7.x Clang 6.0 설치

# 다운로드
wget http://releases.llvm.org/6.0.0/llvm-6.0.0.src.tar.xz
wget http://releases.llvm.org/6.0.0/cfe-6.0.0.src.tar.xz
wget http://releases.llvm.org/6.0.0/libcxx-6.0.0.src.tar.xz
wget http://releases.llvm.org/6.0.0/libcxxabi-6.0.0.src.tar.xz

unxz llvm-6.0.0.src.tar.xz
unxz cfe-6.0.0.src.tar.xz
unxz libcxx-6.0.0.src.tar.xz
unxz libcxxabi-6.0.0.src.tar.xz

tar -xvf llvm-6.0.0.src.tar
tar -xvf cfe-6.0.0.src.tar
tar -xvf libcxx-6.0.0.src.tar
tar -xvf libcxxabi-6.0.0.src.tar

# 아래에서 이 이름을 기준으로 빌드 방법을 설명할것이므로 변경하는게 좋음
mv llvm-6.0.0.src llvm
mv cfe-6.0.0.src clang
mv libcxx-6.0.0.src libcxx
mv libcxxabi-6.0.0.src libcxxabi

#llvm 빌드
mv clang ./llvm/tools
mkdir llvm.build
cd llvm.build
cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local ../llvm
make
sudo make install
cd ..

#libcxx, libcxxabi 빌드
# 1st round to build libcxx without libcxxabi
cd libcxx
mkdir tmp
cd tmp
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local/ -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ..
make
sudo make install
cd ..
rm tmp -rf
cd ..

# Build libcxxabi with libc++
cd libcxxabi

mkdir tmp

cd tmp
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLIBCXXABI_LIBCXX_INCLUDES=../../libcxx/include ..
make
sudo make install
cd ../..

# 2nd round to build libcxx with libcxxabi
cd libcxx
mkdir tmp
cd tmp
# This time, we want to compile libcxx with libcxxabi, so we have to specify LIBCXX_CXX_ABI=libcxxabi and the path to libcxxabi headers, LIBCXX_LIBCXXABI_INCLUDE_PATHS.
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLIBCXX_CXX_ABI=libcxxabi -DLIBCXX_CXX_ABI_INCLUDE_PATHS=../../libcxxabi/include ..
make
sudo make install
cd ../..