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bug#47558: 28.0.50; dlopen 'image not found' gccemacs native-lisp macos


From: Andrea Corallo
Subject: bug#47558: 28.0.50; dlopen 'image not found' gccemacs native-lisp macos
Date: Tue, 06 Apr 2021 07:56:46 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Alan Third <alan@idiocy.org> writes:

> On Mon, Apr 05, 2021 at 08:21:25PM +0000, Andrea Corallo wrote:
>> Alan Third <alan@idiocy.org> writes:
>> 
>> > On Sun, Apr 04, 2021 at 07:10:50AM +0000, Andrea Corallo wrote:
>> >> Eli Zaretskii <eliz@gnu.org> writes:
>> >> 
>> >> >> Date: Sat, 3 Apr 2021 15:01:20 +0100
>> >> >> From: Alan Third <alan@idiocy.org>
>> >> >> Cc: bryan.m.obrien@gmail.com, 47558@debbugs.gnu.org
>> >> >> 
>> >> >> It's not entirely clear to me where the load path is set, is it
>> >> >> 
>> >> >>     fixup_eln_load_path (Lisp_Object directory)
>> >> >> 
>> >> >> in comp.c?
>> >> >
>> >> > I hope Andrea (CC'ed) will be able to answer that.
>> >> 
>> >> Okay, as window is loaded and dumped during the build
>> >> `comp-eln-load-path' here doesn't come into play.
>> >> 
>> >> While resurrecting from dump we locate preloaded eln files by filename
>> >> (relative to the emacs executable position).  Indeed the complication is
>> >> that we have to support both uninstalled but also installed builds.
>> >> 
>> >> To do that before dumping we inform Emacs of where will have to search
>> >> the eln files if installed.  We do that using ELN_DESTDIR defined
>> >> Makefile.in:326.
>> >> 
>> >> If the directory structure on MacOS is different I guess we have to add
>> >> the correct information there.
>> >
>> > No matter what I set ELN_DESTDIR to, emacs still looks in
>> >
>> > /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-24e3df15
>> >
>> > so something isn't being updated, I guess?
>> 
>> That's possible, could you specify the full procedure you've used to
>> reach this point?
>
> ./autogen.sh
> ./configure --with-ns --with-native-compilation
> make
> make install
>
> Note: make install fails, I've had to apply this patch
>
>
> @@ -749,7 +753,8 @@ install-etc:
>  ### Install native compiled Lisp files.
>  install-eln:
>  ifeq ($(HAVE_NATIVE_COMP),yes)
> -     find native-lisp -type f -exec ${INSTALL_DATA} -D "{}" 
> "$(ELN_DESTDIR){}" \;
> +     find native-lisp -type d -exec $(MKDIR_P) "$(ELN_DESTDIR){}" \; ; \
> +     find native-lisp -type f -exec ${INSTALL_DATA} "{}" "$(ELN_DESTDIR){}" 
> \;
>  endif
>
>
> but if you were to try this with GNUstep I suspect that wouldn't be
> needed.
>
> And I've tried modifying ELN_DESTDIR with this
>
>
> @@ -323,7 +323,11 @@ CONFIG_STATUS_FILES_IN =
>  COPYDIR = ${srcdir}/etc ${srcdir}/lisp
>  COPYDESTS = "$(DESTDIR)${etcdir}" "$(DESTDIR)${lispdir}"
>  
> -ELN_DESTDIR = $(DESTDIR)${libdir}/emacs/${version}/
> +ifeq (${ns_self_contained},no)
> +  ELN_DESTDIR = $(DESTDIR)${libdir}/emacs/${version}/
> +else
> +  ELN_DESTDIR = ${ns_appresdir}/
> +endif
>  
>  all: ${SUBDIR} info
>
>
> which results in the .eln files being installed where I want, but
> running the installed Emacs (nextstep/Emacs.app/MacOS/Emacs) still
> gives the error
>
> emacs:
> dlopen(/Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-24e3df15/window-0d1b8b93-513ac8ca.eln,
> 1): image not found

Hi Alan,

Okay the value of ELN_DESTDIR is used during dump to inform Emacs where
the eln will be located (src/Makefile.in:570) so redumping is necessary.
Have you tried redumping or rebuilding from scratch?

Thanks!

  Andrea





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