[Dune-devel] current support gcc version

Mon Apr 7 17:51:16 CEST 2025

I hadn't really thought of the issue of finding the right changelog. Still keeping information in the repos does seem to improve consistency. How about we just keep it _at the top_ of dune-common's Changelog and link from the main webpage to that?
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From: Simon Praetorius <simon.praetorius at tu-dresden.de>
Sent: Monday, April 7, 2025 6:04:12 PM
To: Dedner, Andreas <A.S.Dedner at warwick.ac.uk>; dune-devel at lists.dune-project.org <dune-devel at lists.dune-project.org>
Subject: Re: [Dune-devel] current support gcc version

Hi Andreas,

I was not suggesting to change anything just thought it would be good to tell people what g++ version they need to be able to run Dune.

Yes, this is how I have understood you.

I followed your path and clicked on the webpage and tried to find our the compiler requirements. It is currently very complicated to find out:

Getting started -> Building from Source -> Dependencies -> Recent Changes -> dune-common CHANGELOG (no information)

That's why my question: what is the best place to put this. We can put it into the changelog, but it is not so obvious that one has to look specifically into the dune-common changelog to find out the compiler requirements for the core modules. This assumes you already know the modules graph and dependencies.

How does deal.ii do it? The link on their webpage under current release to the README with system requirements as first section. In their git repository there is a quick installation plus a link to that detailed REMAE spekoen before. So, maybe this is the right path to follow? We just need to be consistent in our descriptions.

Best,
Simon

And as i said in my original email the link to the Changelog on the webpage seemed like a sensible way to avoid duplicating the information. I don't see why this information could not be added now to the changelog even it changes again before 2.11 is released.
Andreas
________________________________
From: Dune-devel <dune-devel-bounces at lists.dune-project.org><mailto:dune-devel-bounces at lists.dune-project.org> on behalf of Simon Praetorius <simon.praetorius at tu-dresden.de><mailto:simon.praetorius at tu-dresden.de>
Sent: 07 April 2025 15:09
To: dune-devel at lists.dune-project.org<mailto:dune-devel at lists.dune-project.org> <dune-devel at lists.dune-project.org><mailto:dune-devel at lists.dune-project.org>
Subject: Re: [Dune-devel] current support gcc version

Hi again,

regarding the info on the webpage and the changelog: the problem was that we have at least 5 places where compiler requirements are listed and these were (and are still) not synchronizes. I think, we wanted to reduce this to 1 or 2 places only. That is why the webpage just refers to another source. This can probably be improved.

Since the master is the current development version of our code, the compiler and library requirement for 2.11 might still change and thus is not fixed in the changelog. The only thing we can currently guarantee is what the ci system is testing.

The question is, where is the best place to list the requirements, such that we can link to it from the other places?

Best,
Simon

Dr. Simon Praetorius
Institut für Wissenschaftliches Rechnen
Fakultät Mathematik
Technische Universität Dresden
Tel.: TUD-34432
Mail: simon.praetorius at tu-dresden.de<mailto:simon.praetorius at tu-dresden.de>
Web: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftu-dresden.de%2Fmn%2Fmath%2Fwir%2Fdas-institut%2Fbeschaeftigte%2Fsimon-praetorius&data=05%7C02%7Ca.s.dedner%40warwick.ac.uk%7Cd0e927be70d14cd8c24c08dd75dde8db%7C09bacfbd47ef446592653546f2eaf6bc%7C0%7C0%7C638796318143999222%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=47%2BCx8WQkJxtDANVubVcANBAeifxODkDtNqm8fz2404%3D&reserved=0<https://tu-dresden.de/mn/math/wir/das-institut/beschaeftigte/simon-praetorius>

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Von: Dune-devel <dune-devel-bounces at lists.dune-project.org><mailto:dune-devel-bounces at lists.dune-project.org> im Auftrag von Simon Praetorius <simon.praetorius at tu-dresden.de><mailto:simon.praetorius at tu-dresden.de>
Gesendet: Montag, 7. April 2025 15:35:46
An: dune-devel at lists.dune-project.org<mailto:dune-devel at lists.dune-project.org>
Betreff: Re: [Dune-devel] current support gcc version

Hi Andreas,

the decision was that we wanted to lift the minimal versions after the
2.10 version to something that allows working with c++ concepts. This is
gcc >= 10 and clang >= 13. This is also what is implemented in the
system tests and ci pipelines. It is written, for example, in the README
of dune-common. There were a couple of MRs proposing and then
implementing this change, see, for example,
https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.dune-project.org%2Fcore%2Fdune-common%2F-%2Fmerge_requests%2F1445&data=05%7C02%7Ca.s.dedner%40warwick.ac.uk%7Cd0e927be70d14cd8c24c08dd75dde8db%7C09bacfbd47ef446592653546f2eaf6bc%7C0%7C0%7C638796318144026631%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=H57BWnfGV7xNbLe4KsLb7uINVznKUNUhKFq8Y0Yk%2BMQ%3D&reserved=0<https://gitlab.dune-project.org/core/dune-common/-/merge_requests/1445>

Best,
Simon

Am 07.04.25 um 14:49 schrieb Dedner, Andreas:
> Hi.
> I'm having difficulties compiling current dune sources with g++ 9.4 on
> an older system that I have.
> The issue is the concepts used in dune-common.
>
> I was wondering what the current lowest version for g++ is? On the
> webpage it says to look into the changelog (very sensible) but there I
> can only find that g++ >= 9 should work for 2.10 but nothing newer
> than that. Is there a changelog entry missing or did I miss it?
>
> Hope everyone is well
> Andreas
>
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--
Dr. Simon Praetorius
Technische Universität Dresden
Fakultät Mathematik
Institut für Wissenschaftliches Rechnen
Tel: TUD-34432
Web: tu-dresden.de/Members/simon.praetorius

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