GNU bug report logs - #49659
[PATCH core-updates] gnu: guile: Fix failing tests on i686-linux.

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From: Efraim Flashner <efraim <at> flashner.co.il>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 49659 <at> debbugs.gnu.org, Maxime Devos <maximedevos <at> telenet.be>
Subject: [bug#49659] [PATCH core-updates] gnu: guile: Fix failing tests on i686-linux.
Date: Tue, 20 Jul 2021 21:22:33 +0300

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On Tue, Jul 20, 2021 at 03:55:49PM +0200, Ludovic Courtès wrote:
> Hi!
> 
> Maxime Devos <maximedevos <at> telenet.be> skribis:
> 
> > i586-gnu might have the same issue.
> 
> Please add a “Fixes …” line.
> 
> > * gnu/packages/guile.scm
> >   (guile-3.0)[arguments]<#:configure-flags>: Add
> >   "-fexcess-precision=standard" to CFLAGS.
> 
> Nitpick: the first two lines can be joined.  :-)
> 
> >       (substitute-keyword-arguments (package-arguments guile-2.2)
> >         ((#:configure-flags flags ''())
> > -        (let ((flags `(cons "--enable-mini-gmp" ,flags)))
> > +        ;; -fexcess-precision=standard is required when compiling for
> > +        ;; i686-linux, otherwise "numbers.test" will fail.
> > +        (let ((flags `(cons* "CFLAGS=-g -O2 -fexcess-precision=standard"
> > +                              "--enable-mini-gmp" ,flags)))
> 
> Yay!  Questions:
> 
>   1. Should we make it conditional on
>        (or (string-prefix? "i686-" %host-type)
>            (string-prefix? "i586-" %host-type))
>      ?  (I wonder why armhf-linux doesn’t have the same problem.)
> 
> Thoughts?
> 
> Ludo’.
> 

I'd also like to mention that this bug doesn't show up on 32-bit powerpc.

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