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Date: Tue, 1 Apr 1997 23:38:12 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199704011338.XAA23051@godzilla.zeta.org.au>
To: bde@zeta.org.au, jb@cimlogic.com.au
Subject: Re: cvs commit: src/include unistd.h
Cc: cvs-all@freefall.freebsd.org, CVS-committers@freefall.freebsd.org,
        cvs-include@freefall.freebsd.org, peter@freefall.freebsd.org,
        peter@spinner.dialix.com
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>>From my reading of POSIX 1003.1b, I'd expect to see things like:
>
>#if (!defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) &&
>    !defined(_POSIX_C_SOURCE)) || (_POSIX_C_SOURCE >= 199309L)
>int nanosleep __P((const struct timespec *, struct timespec *));
>#endif

This seems like a good reason to not support POSIX.1b :-).

>I thought all the C API stuff was in 1003.1, so where does the
>glibc-2.0 get the _POSIX_C_SOURCE >= 2 from?
>
>Maybe I'm confused 'cause I've never seen POSIX.2. 8-)

It's in the POSIX.2 draft that I have.  BTW, I looked for POSIX
books at some web book suppliers the other day.  They didn't have
much.  IIRC, DA in Victoria has POSIX.2 for a measly A$296 and
Amazon has it for US$98.

Bruce