Building OpenMP
curl -L -O https://github.com/llvm/llvm-project/releases/download/llvmorg-12.0.0/openmp-12.0.0.src.tar.xz
tar -xvf openmp-12.0.0.src.tar.xz ; rm openmp-12.0.0.src.tar.xz
cd openmp-12.0.0.src
cmake . -DLIBOMP_ENABLE_SHARED=OFF -DLIBOMP_INSTALL_ALIASES=OFF -DCMAKE_OSX_ARCHITECTURES=x86_64
sudo make install