I can confirm that it now works. I did a bit of looking through the commit
history and playing around with 'guix time-machine', and whatever changed
to fix
it, it wasn't a change that touched gnu/packages/emacs.scm. I know it fell
between 7ab5c4e0e8 and 5ce153b110, though.

Thanks for bringing this up, I guess we can close this now?

- reepca

On Tue, Mar 10, 2020 at 4:52 PM <mike@rohleder.de> wrote:

> Caleb Ristvedt <caleb.ristvedt@cune.org> writes:
> >
> > Assuming the above file is named emacs-module-test.c:
> >
> > -------------------------------
> > $ gcc -fPIC -shared emacs-module-test.c -o hello-module.so
> > $ emacs -Q -L . --batch -l hello-module --eval "(message (hello-c))"
> >
> > => Symbol's function definition is void: hello-c
> > -------------------------------
> >
> > As far as I can tell, this should work. Our emacs is built with
> > '--with-modules', and 'MODULES' is in system-configuration-features. Any
> > idea what's going wrong?
>
> I cant reproduce this, it works for me:
>
> $ guix environment -C bash --ad-hoc emacs gcc-toolchain
> [env]$ gcc -fPIC -shared emacs-module-test.c -o hello-module.so
> [env]$ emacs -Q -L . --batch -l hello-module --eval "(message (hello-c))"
> TEST MESSAGE!
> TEST MESSAGE!
> TEST MESSAGE!
> Hello Emacs
>
>
> --
> Der Erfolg ist nicht danach zu beurteilen, was ein Mensch im Leben
> erreicht hat, sondern nach den Hindernissen, die er auf dem Weg zum
> Erfolg ueberwunden hat.
> (Booker T. Washington)
>