git submodule update --init External/src/llvm External/src/clang External/src/libcxx External/src/libcxxabi
mkdir External\build\llvm
pushd External\build\llvm
cmake -DLLVM_ENABLE_DUMP=ON -DCMAKE_INSTALL_PREFIX=../../Windows  -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="AMDGPU;ARM;X86;AArch64;NVPTX" -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_PARALLEL_COMPILE_JOBS=8 -G "Visual Studio 15 2017 Win64" -Thost=x64 ../../src/llvm
cmake --build . --config release --target install
popd