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Re: wip-arm-bootstrap: Reduced binary seed bootstrap

From: Ludovic Courtès
Subject: Re: wip-arm-bootstrap: Reduced binary seed bootstrap
Date: Tue, 22 Dec 2020 16:10:46 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)


Jan Nieuwenhuizen <janneke@gnu.org> skribis:

> I pushed an initial wip-arm-bootstrap that builds up to tcc-boot:
> ./pre-inst-env guix build -e '(@@ (gnu packages commencement) tcc-boot)'
> Danny did a terrific job on armhf-linux support for GNU Mes and we are
> getting close to release v0.23.  What's known to be missing is "setjmp"
> support for tcc/gcc.  And, of course, for the Reduced binary seed
> bootstrap to work on ARM!

Woohoo, thumbs up for this great milestone, hackers! 🎉

> Anyway, the problem I'm looking at now is that while tcc-boot builds on
> an ARM box, it does not build on aarch64-linux, i.e. this
> ./pre-inst-env guix build --system=armhf-linux \
>   -e '(@@ (gnu packages commencement) tcc-boot0)'
> fails on overdrive1.

That’s “interesting”.  Did you eventually find a lead?

>   configure: error: 'mescc' failed to compile conftest.c.
> Backtrace:
> In unknown file:
>    ?: 19 [apply-smob/1 #<catch-closure 410f30>]
> [..]
> In gash/shell.scm:
>  165: 1 [sh:exec-let () "./conftest" "triplet"]
> In unknown file:
>    ?: 0 [execle "./conftest" # "./conftest" ...]
> ERROR: In procedure execle:
> ERROR: In procedure execle: No such file or directory

Looks like the ELF interpreter on ‘conftest’ might be wrong?

Thanks for the update, it’s exciting!


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