Linus Torvalds writes:
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> So it would appear that for OS X, the > > #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ > #define _GNU_SOURCE > #define _BSD_SOURCE > sequence actually _disables_ those things.
Yes, of course. The odd one here is glibc.
Normal systems enable everything by default. As soon as you specify a feature define, you get ONLY what you asked for. I'm not sure why glibc is broken, but I suspect that somebody wants to make everyone declare their code to be GNU source. (despite many "GNU" things not working on the HURD at all)
Define _APPLE_C_SOURCE to make MacOS X give you everything.