LLVM installation

Installing LLVM on macOS

• Better use macports in our experience, install LLVM first : https://ports.macports.org/search/?q=llvm&name=on

• Install llvm-select https://ports.macports.org/port/llvm_select/

• Then sudo port select llvm gives something like:

• Available versions for llvm:

• mp-llvm-10

• mp-llvm-11

• mp-llvm-12 (active)

• mp-llvm-devel

• none

• And you can chose the version you want to install: sudo port select llvm mp-llvm-11

• And llvm-config should now be available.