It’s also a decade older and benchmarks at half the performance. I’d bet that 90% of the issue is that make, /bin/sh, and autotools all use fork() on macOS ins

It’s also a decade older and benchmarks at half the performance. I’d bet that 90% of the issue is that make, /bin/sh, and autotools all use fork() on macOS instead of posix_spawn() (I think that’s still the case…), and fork is slow on macOS. But not quite slow enough to get all that fixed by default.