André A. Gomes schreef op di 11-01-2022 om 22:13 [+0300]:
> Maxime Devos <maximedevos@telenet.be> writes:
>
> > > A log below.
> > >
> > > --8<---------------cut here---------------start------------->8---
> > > configure: error: The installed libgccjit failed to compile and run a test program using
> > > the libgccjit library; see config.log for the details of the failure.
> > > [...]
> >
> > configure is telling that "config.log" has details, please include it.
>
> Right, but I couldn't figure out what's this file or where it's
> located. 

You can pass --keep-failed to "guix build", then "config.log" should be
in (a subdirectory) of /tmp/guix-build-aadcg-emacs-28.0.91-0
(not sure about the directory name).

Greetings,
Maxime.