bug#52376: 28.0.90; libdir is missing from native-comp-eln-load-path with GTK3 build

[Eli Zaretskii]

> Date: Fri, 10 Dec 2021 16:50:06 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 52376@debbugs.gnu.org, akrl@sdf.org
> 
> > Nope. It does not break on 5291 (RELOC_NATIVE_COMP_UNIT case) and on
> > 5362 (RELOC_NATIVE_SUBR) as well.
> > 
> > When I set breakpoint on pdumper.c:5264, and print emacs_execdir it
> > gives "$1 = 0x0". So, HAVE_NATIVE_COMP is indeed defined.
> 
> Which probably means the .pdmp file is somehow devoid of
> natively-compiled code, i.e. it was produced by dumping the *.elc
> files, not the *.eln files?

Does the command below show anything at all?

  $ strings /usr/bin/emacs-28.0.90.pdmp | fgrep .eln

Actually, thinking about it now: why is the emacs.pdmp file in
/usr/bin?  It should be under /usr/libexec/emacs/28.0.90/.