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From: Eli Zaretskii <eliz@gnu.org>
To: Steve Downey <sdowney@gmail.com>
Cc: 55294@debbugs.gnu.org
Subject: bug#55294: Configure failure on Solaris 11.4
Date: Sat, 07 May 2022 08:40:15 +0300	[thread overview]
Message-ID: <83sfplzyrk.fsf@gnu.org> (raw)
In-Reply-To: <CAJEGDKpQN-88CqmUaawr8=a+y+C9jYPUxWY2193WiStwr6Cr3w@mail.gmail.com> (message from Steve Downey on Fri, 6 May 2022 15:58:39 -0400)

> From: Steve Downey <sdowney@gmail.com>
> Date: Fri, 6 May 2022 15:58:39 -0400
> 
> On solaris 11.4, the system libc has a definition of sqrt leading configure to believe that linking libm is
> unnecessary.

Can you tell the details, please?  What is that definition of sqrt,
and what do you see in config.log when it is tested?

> Applying a patch locally to change
> AC_SEARCH_LIBS([sqrt], [m]) to 
> AC_SEARCH_LIBS([atan], [m])
> fixes the problem. 
> 
> atan was picked at random from the symbols that couldn't be found in building temacs. 

This is fragile, because we could have the same problem with atan, in
the future or on some other platform, if not here and now.  I think we
should understand better why using sqrt leads to the wrong conclusion,
and modify configure to avoid that.

Thanks.





  reply	other threads:[~2022-05-07  5:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-06 19:58 bug#55294: Configure failure on Solaris 11.4 Steve Downey
2022-05-07  5:40 ` Eli Zaretskii [this message]
2022-05-09 19:07 ` Paul Eggert
2022-05-09 19:21   ` Eli Zaretskii
2022-05-09 19:34     ` Paul Eggert
2022-05-10  0:15   ` Steve Downey
2022-05-10  2:35     ` Eli Zaretskii
2022-05-10  4:46       ` Steve Downey
2022-05-10 12:07         ` Eli Zaretskii
2022-05-10 21:49           ` Paul Eggert

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