Commands used to build LLVM and Clang

build-llvm.sh

git clone https://github.com/llvm/llvm-project.git
cd llvm-project
mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE=Debug         \
        -DCMAKE_C_COMPILER=clang       \
        -DCMAKE_CXX_COMPILER=clang++   \
        -DCMAKE_EXPORT_COMPILE_COMMANDS=YES \
        -DBUILD_SHARED_LIBS=ON         \
        -DLLVM_USE_LINKER=lld          \
        -DLLVM_CCACHE_BUILD=ON         \
        -DLLVM_APPEND_VC_REV=OFF       \
        -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;lld" \
        -DLLVM_TARGETS_TO_BUILD="host;AArch64;NVPTX;RISCV"   \
        -DLLVM_OPTIMIZED_TABLEGEN=ON   \
        -GNinja ../../llvm && ninja

LLVM_CCACHE_BUILD is deprecated