Re: extensions module and Solaris

[Eric Blake]

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According to Bruno Haible on 5/27/2008 4:35 PM:
| Eric Blake wrote:
|> should m4/extensions.m4 blindly define
|> _POSIX_SOURCE for Solaris, like it already does for Minix
|
| Certainly not. On many systems, _POSIX_SOURCE *prevents* system
| extensions from being available. It's the opposite of _ALL_SOURCE (AIX),
| _HPUX_SOURCE (HP-UX), _GNU_SOURCE (glibc).

Solaris documents that '_POSIX_SOURCE' followed by '__EXTENSIONS__'
enables all extensions which don't conflict with POSIX.  Yes, by itself,
it is the opposite, but my proposal was adding it prior to __EXTENSIONS__.
~ Then again, since my tests showed that the mere definition didn't change
behavior, and rather the addition of a link file (or the compiler name, as
c89 is supposed to pull in values-xpg4.o under the hood), defining
_POSIX_SOURCE on Solaris doesn't seem to help.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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