Not that I'm defending autoconf (I dislike it a lot), but
POSIX is also ignorant sometimes, so it shouldn't be treated dogmatically - e.g., google for the socklen_t confusion.
Other than that, the real world isn't black and white either. Although many unixen claim to be POSIX compliant, based on my experience they are mostly POSIX-ish.
And there's also no guarantee for sizeof(size_t) being a platform's word size.
Other than that, the real world isn't black and white either. Although many unixen claim to be POSIX compliant, based on my experience they are mostly POSIX-ish.
And there's also no guarantee for sizeof(size_t) being a platform's word size.