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Re: -xc99=all and libraries on Solaris 10

From: Peter O'Gorman
Subject: Re: -xc99=all and libraries on Solaris 10
Date: Mon, 27 Dec 2010 11:35:16 -0600
User-agent: Mutt/1.5.21 (2010-09-15)

Hi Bruno,

I never followed up on this, sorry.

On Sun, Dec 26, 2010 at 04:46:14PM +0100, Bruno Haible wrote:
> Hi,
> Reviving an old thread from February 2010.
> In <>
> There is a bug open about this, though:
> <>

Thank you for commenting on that bug, I agree completely.

> I hope this flag won't be used by GCC, because it's a bad idea, just
> like the _fmode variable on Windows.

It turns out the HP-UX does a very similar thing, but is dependent on
the setting of UNIX95 or UNIX_STD environment variables rather than
compiler flags (see standards(5) and /usr/lib/unix*.o
/usr/lib/hpux*/unix*.o etc).

However we've never run into it on HP-UX, mostly because autoconf does
not export any env vars in AC_PROG_CC_C99/AC_PROG_CC_STDC, it does,
however add -xc99=all on solaris, so even though we consistently set CC,
CFLAGS and so on at build time, we sometimes get libraries with __xpg
symbols dependent on whether the has one of those two

We patch our autoconf to not add -xc99=all to avoid the issue.

Peter O'Gorman

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