Careful with that assertion. macOS is a derivative of NextStep, which is a derivative of 4.4BSD which also spawned FreeBSD and NetBSD. That makes macOS and FreeBSD cousins at best. See https://en.wikipedia.org/wiki/Unix-like
macOS is absolutely not a FreeBSD fork, but there are lots of bits and pieces in current macOS that are direct derivatives of FreeBSD code, including kernel code, libc and lots of userland stuff.
"The BSD portion of the OS X kernel is derived primarily from FreeBSD, a version of 4.4BSD that offers advanced networking, performance, security, and compatibility features."
That was decades ago. Since then Apple went their own way. Anything of significance has been rewritten or mothballed as legacy baggage. Their open-source efforts were left to wither and die. It's been 14 years since Apple got scared of GPL3 and abandoned everything GNU-related.
einr|4 years ago
https://developer.apple.com/library/archive/documentation/Da...
"The BSD portion of the OS X kernel is derived primarily from FreeBSD, a version of 4.4BSD that offers advanced networking, performance, security, and compatibility features."
pornel|4 years ago