bug#44337: [squid] Reproducibility bug in squid package

[Ludovic Courtès]

Hi Jean-Baptiste,

Jean-Baptiste Note <jean-baptiste.note@m4x.org> skribis:

> The squid package as provided from substitute servers currently crashes
> on my (admittedly old) Core 2 Duo server.  Though generally observed in
> a different context (virtualization), this is an FAQ from SQUID -- see:
>
> https://wiki.squid-cache.org/KnowledgeBase/IllegalInstructionError
>
> I think the fix of disabling -march=native should actually be applied.
> In the current state, not only does the package not work on some x86_64
> machines, but the outcome of the build depends on the builder machine
> and thus defeats reproducibility.

Indeed.  Our goal is to provide “generic” binaries, so disabling
‘-march=native’ is the right thing anyway.

> NB: maybe a more general fix could be envisionned for these kind of
> -march=native issues; this is admittedly a pretty local fix.

In practice it seems that packages rarely do that by default (with
linear algebra software being an exception), though I don’t have hard
figures.

>>From 199ca1036197064d609a8f76a7eb46b6e72996fb Mon Sep 17 00:00:00 2001
> From: Jean-Baptiste Note <jean-baptiste.note@m4x.org>
> Date: Wed, 28 Oct 2020 11:22:39 -0400
> Subject: [PATCH] gnu: squid: Fix build reproducibility issue.
>
> * gnu/packages/networking.scm (squid): Add --disable-arch-native configure
> flag.

Applied, thanks!

Ludo’.