Linux下安装 llvm 和 clang

1. 下载

git clone https://github.com/llvm/llvm-project.git
git checkout llvmorg-7.0.1  ( llvm8.0.1 later 需要 GCC5.1 above)

2. 编译

cd llvm-project
cp -r clang  llvm/tools/
Cd llvm 
Mkdir build
Cd build
 cmake3 -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_TARGETS_TO_BUILD="X86;ARM;NVPTX;AArch64;Mips;PowerPC" -DLLVM_ENABLE_ASSERTIONS=ON -DCMAKE_BUILD_TYPE=Release ..
Make -j 

3. 设置环境变量

export LLVM_CONFIG=/your_path/llvm-project/llvm/build/bin/llvm-config