Re: Retrieving the "include" directory for Emacs Modules

[Eli Zaretskii <eliz@gnu.org>]

> Date: Tue, 10 Dec 2024 22:23:05 -0500
> From:  Stefan Monnier via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
> 
> >> > As I tried to explain, if emacs-module.h is not installed in its
> >> > intended place, we cannot know where it is installed.
> >> The patch below would make sure that `emacs-module.h` is always
> >> available at `$(data-directory)/include/emacs-module.h`.
> > Sorry, this is wrong. [...] this is a change that will break previous
> > (and correct) behavior.
> 
> I don't see how it would break anything: the .h file is still *also*
> copied to the $(includedir) for those people who want to compile their
> module outside of Emacs.

That makes this easier to accept, but there are still issues.

> > No compiler will look in that directory without a suitable -I option,
> 
> That's OK: the sole purpose of the change is to let ELPA packages call
> `gcc` with such a `-I`!

Let's discuss this in a proper place, not here, okay?  In particular,
I'd like to hear more opinions and data points, from people who don't
necessarily read this forum.