bug#47120: 28.0.50; [feature/native-comp] Stale *.eln files are not recompiled

[Eli Zaretskii]

> From: Andrea Corallo <akrl@sdf.org>
> Cc: 47120@debbugs.gnu.org
> Date: Sat, 13 Mar 2021 20:12:41 +0000
> 
> > I'm talking about the *.el files that are not automatically natively
> > compiled, they are natively compiled when first time loaded into
> > Emacs.
> 
> I see now thanks, but I'm wondering why should we native compile it
> automatically when the .el is updated later-on if we don't do it during
> the first build?

It just doesn't sound right to me not to update.

But maybe others will think differently.

Or maybe we should by default native-compile all the *.el files in the
tarball as part of the build, and then what I expect will happen
automatically.