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bug#49372: lagrange: illegal instruction

From: Efraim Flashner
Subject: bug#49372: lagrange: illegal instruction
Date: Sun, 4 Jul 2021 22:09:57 +0300

On Sat, Jul 03, 2021 at 07:32:45PM -0800, Christopher Howard wrote:
> Hi, I've discovered lagrange is another one of those packages which, if I use 
> a substitute, it gives the error "illegal instruction" when I try to run it. 
> but if I download the source and build it
> myself, I have no trouble running it. I'm certain without any research that 
> this is a reproducibility error, due to native instructions not on my 
> processor, but I could do the guix challenge if
> somebody could remind me exactly how to tell guix to rebuild that one package 
> from source.

I found that there is a spot in the code where it tests if the compiling
computer can support sse4.1, and if so then it enables it. I've added a
configure-flag to disable that. Can you test the new version?

Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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