Hello,

I am sorry, but I think that I solved the issue by running a make clean
Now the generated code is the same on both machines.

Probably I have an object from a previous version of gsl which was not 
recompiled
at the same time on both machines.

My Makefile is probably not optimum.
How can I force a compilation in case of an update of a library like gsl?

Thank to every body for the help.


> Sent: Thursday, November 14, 2024 at 9:56 AM
> From: "Jakub Jelinek" <ja...@redhat.com>
> To: "Patrick Dupre" <pdu...@gmx.com>
> Cc: "Community support for Fedora users" <users@lists.fedoraproject.org>, 
> "Barry" <ba...@barrys-emacs.org>
> Subject: Re: gcc/gsl
>
> On Thu, Nov 14, 2024 at 09:25:40AM +0100, Patrick Dupre wrote:
> > No, I do not use such options
>
> Then I don't believe you can get different assembly from the same compiler
> same source same options.  GCC ought to produce the same output
> reproduceably (unless the source uses __DATE__, __TIME__ or __TIMESTAMP__
> macros) and if you use -frandom-seed= option (without that on rare
> occassions some symbols could have different random characters in the names
> and unique coverage stamps; but even without -frandom-seed= it randomly
> choose how to compile code).  And unless you use PGO and the program differs
> between test runs.
>
>       Jakub
>
>
-- 
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