bug#55277: 29.0.50; Commit 8fce81897d no longer generates eln files

[Eli Zaretskii <eliz@gnu.org>]

> From: Kun Liu <kun.liu@gmail.com>
> Date: Thu, 5 May 2022 13:32:48 -0700
> Cc: 55277@debbugs.gnu.org
> 
>  > Could you please tell me where *.eln files are at now?
> 
>  The *.eln files produced as part of the build should under
>  native-lisp/ in the build tree.  The *.eln files under your
>  ~/.emacs.d/eln-cache/ directory will be produced dynamically, when you
>  for the first time load the corresponding .elc file for which there's
>  no .eln.
> 
> Thanks. That actually is the problem I was trying to report. After using for a few hours, I still have just these
> two .elns under my ~/.emacs.d/eln-cache/29.0.50-a2ce0d0a  directory. In previous builds, I see roungly
> 450-500 eln files there. It almost seems like the .elns are not being built in this commit.

I cannot reproduce this.  E.g., if I visit one of the C source files
in the Emacs source tree, in an Emacs built from today's master
branch, I see asynchronous native-compilation starting (use "M-x
list-processes" to show those compilation processes), and after a
while there are a bunch of new *.eln files under my eln-cache
directory.

If this doesn't work for you, it's probably due to some other change
on your system.  Or maybe this is something specific to your Emacs
configuration (I don't use the PGTK build).

Do you have a buffer called "*Async-native-compile-log*" in that Emacs
session?  If so, does it say anything interesting about some problems
during native-compilation?