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Re: Core-updates and cross-compilation
From: |
Ludovic Courtès |
Subject: |
Re: Core-updates and cross-compilation |
Date: |
Thu, 16 Mar 2023 14:58:45 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) |
Hi,
Josselin Poiret <dev@jpoiret.xyz> skribis:
> I've been looking at the state of most failures for the CI jobset for
> core-updates, and we have a couple of problems:
>
> - gcc < 9 and gcc == 12 never cross-compile.
I agree with Andreas, I think that’s okay.
[...]
> - we can't build the cross toolchain for the hurd, because the glibc
> upgrade to 2.35 would require newer gnumach headers, itself with a
> newer mig. All these upgrades would be local and pretty ok if they
> didn't also require a glibc patch to make the configure script of
> glibc work (right now it would check for presence of headers without
> -ffreestanding, even though we clearly don't have the glibc built
> yet!). This would cause a world-rebuild as well. I don't know how
> much work fixing the rest would be, but that's probably the only glibc
> patch that's needed.
It’s really great that you’ve been looking at this! If I can be of any
help, of if you feel desperate ;-), please don’t hesitate to ping me on
IRC.
> Also note that Hurd now seems to have some quite recent git tags,
> which are also used by Debian, so we can expect less random commit
> combinations not working.
The good news is that Samuel Thibault is now officially a (actually:
the) Hurd maintainer, which means they should be able to get upload
permission to ftp.gnu.org—a step in the right direction.
> Should we consider these blockers for a core-updates merge? Should we
> somehow stop supporting the first use-case?
In the past, I’d use ‘etc/release-manifest.scm’ as a way to check for
merge (or release) blockers.
When it comes to cross-compilation, we must be able to cross-compile the
bootstrap tarballs, as in:
./pre-inst-env guix build bootstrap-tarballs \
--target=aarch64-linux-gnu -n
That works well on ‘core-updates’ so far, except for i586-pc-gnu.
Thanks,
Ludo’.