bug#57309: 29.0.50; Build error "trying to dump non fixed-up eln file"

[Eli Zaretskii]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: larsi@gnus.org,  57309@debbugs.gnu.org,  akrl@sdf.org
> Date: Sun, 21 Aug 2022 15:39:25 +0200
> 
> rm -f emacs && cp -f temacs emacs
> LC_ALL=C ./temacs -batch  -l loadup --temacs=pdump \
>               --bin-dest  --eln-dest 
> Loading loadup.el (source)...
> Dump mode: pdump
> 
> 
> Note that --bin-dest and --eln-dest have no arguments.

Their values are defined in the top-level Makefile.  Why are they
empty in your case?