Modify macOS workflow to find SDK path #173

Job	Run time
build (Release, arm, armv6l, https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/...	17m 14s
build (Debug, arm, armv7l, https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Ra...	17m 14s
build (Release, arm64, arm64, aarch64-linux-gnu)	17m 14s
build (Debug, arm, armv6l, https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Ra...	17m 14s
build (Debug, arm64, arm64, aarch64-linux-gnu)	16m 58s
build (Release, arm, armv7l, https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/...	17m 14s
	1h 43m 8s

Provide feedback