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bug#55294: Configure failure on Solaris 11.4
From: |
Eli Zaretskii |
Subject: |
bug#55294: Configure failure on Solaris 11.4 |
Date: |
Mon, 09 May 2022 22:21:50 +0300 |
> Resent-From: Paul Eggert <eggert@cs.ucla.edu>
> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
> Resent-CC: bug-gnu-emacs@gnu.org
> Resent-Sender: help-debbugs@gnu.org
> Cc: 55294@debbugs.gnu.org
> Date: Mon, 9 May 2022 12:07:51 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
>
> Thanks for the bug report. The patch looks safe, since Emacs calls atan
> as well as sqrt. And it looks like an improvement, since I can imagine
> all sorts of reasons why sqrt would not need libm whereas atan would,
> starting with the fact that typical hardware nowadays has sqrt
> instructions but not atan instructions. (The 'configure' test itself
> relies on undefined behavior, so it's not strictly portable anyway.)
>
> Although it would be helpful to know how to reproduce the problem (which
> compiler? how configured? etc.) and which symbols were not found in
> temacs on Solaris 11.4, we don't need to know that to install the patch.
As I explained earlier, I'd like to understand it better, and would
not want to blindly move to another function.