try to cross compile with clang #374

Job	Run time
build (windows-latest, Dockerfile.windows, windows)	46m 56s
build (windows-latest, Dockerfile.windows, windows)	58m 42s
build (ubuntu-latest, Dockerfile.arm64, arm64, arm64v8/ubuntu)	15m 51s
build (ubuntu-latest, Dockerfile.arm64, arm64, arm64v8/ubuntu)	15m 51s
build (ubuntu-latest, Dockerfile.rpi, armv6l, https://sourceforge.net/projects/raspberry-pi-cross...	13m 25s
build (ubuntu-latest, Dockerfile.rpi, armv6l, https://sourceforge.net/projects/raspberry-pi-cross...	13m 25s
build (ubuntu-latest, Dockerfile.rpi, armv7l, https://sourceforge.net/projects/raspberry-pi-cross...	13m 43s
build (ubuntu-latest, Dockerfile.rpi, armv7l, https://sourceforge.net/projects/raspberry-pi-cross...	13m 43s
build (ubuntu-latest, Dockerfile, amd64)	15m 54s
build (ubuntu-latest, Dockerfile, amd64)	15m 54s
multiarch	0s
multiarch	11s
	3h 43m 35s

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