apple-universal2-example

based on https://developer.apple.com/documentation/xcode/building_a_universal_macos_binary

setup:

download xcode12 from https://developer.apple.com/download/ (apple-id is needed)

then extract downloaded .xip file and copy xcode-beta.app to /Applications

then use sudo xcode-select -s /Applications/Xcode-beta.app

now you have all dependencies!

use make to build a hello world universal binary and make clean to clean generated apps