bug#49099: 28.0.50; Parallel build issue

[Ergus via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Hi Eli:

Yes, this solves the issue for me. Tks

On Sun, Jun 20, 2021 at 01:57:06PM +0300, Eli Zaretskii wrote:
>> Date: Fri, 18 Jun 2021 19:08:33 +0200
>> From:  Ergus via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>>
>>
>> When building in parallel (make -j install) it seems to install wrongly
>> because when I try to execute after that I get:
>>
>> Error using execdir /home/user/.local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/:
>> emacs:
>> /home/user/.local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../native-lisp/28.0.50-0f08941b/preloaded/window-ac748af0-63c191c3.eln:
>> cannot open shared object file: No such file or directory
>
>Does the below help?
>
>diff --git a/Makefile.in b/Makefile.in
>index 3facfa5..474441f 100644
>--- a/Makefile.in
>+++ b/Makefile.in
>@@ -753,7 +753,7 @@ install-etc:
> 	done
>
> ### Install native compiled Lisp files.
>-install-eln:
>+install-eln: lisp
> ifeq ($(HAVE_NATIVE_COMP),yes)
> 	find native-lisp -type d -exec $(MKDIR_P) "$(ELN_DESTDIR){}" \; ; \
> 	find native-lisp -type f -exec ${INSTALL_DATA} "{}" "$(ELN_DESTDIR){}" \;