Build on Linux/macOS #472

Job	Run time
Build (clang-18/bmake on ubuntu-22.04)	40s
Build (gcc-15/bmake on macos-15-intel)	37s
Build (musl-gcc/bmake on ubuntu-22.04)	1m 1s
Build (clang-20/bsdmake on macos-26)	24s
Build (gcc-13/make on macos-14)	34s
Build (gcc-14/make on ubuntu-24.04)	33s
	3m 49s

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