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

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

[Bryan O'Brien]

Compiling gccemacs from latest git branch.
Emacs compiles with warnings but no errors.
Starting Emacs with fails with:

gccemacs/nextstep/Emacs.app/Contents/MacOS/Emacs -Q --debug-init
emacs:
dlopen(/Users/bobrien/src/gnu-emacs/28/gccemacs/nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-2865d7b3/window-0d1b8b93-513ac8ca.eln, 1): image not found

Workaround is as follows:

cd ~/src/gnu-emacs/28/gccemacs/nextstep/Emacs.app/Contents
ln -s ~/src/gnu-emacs/28/gccemacs/native-lisp .

In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin20.4.0, NS appkit-2022.44 Version 11.3 (Build 20E5224a))
 of 2021-04-01 built on Cuchulainn.local
Repository revision: 978afd788fd0496540f715b83f18ed390ca8d5a4
Repository branch: feature/native-comp
Windowing system distributor 'Apple', version 10.3.2022
System Description:  macOS 11.3

Configured using:
 'configure --with-native-compilation --with-x-widgets
 CFLAGS=-I/usr/local/opt/libgccjit/include
 LDFLAGS=-L/usr/local/opt/libgccjit/lib/gcc/10'
Configured features:
ACL DBUS GLIB GNUTLS JSON LCMS2 LIBXML2 MODULES NATIVE_COMP NOTIFY
KQUEUE NS PDUMPER PNG RSVG THREADS TOOLKIT_SCROLL_BARS XIM ZLIB
Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: mu4e:main

Minor modes in effect:
  helm-descbinds-mode: t
  helm-mode: t
  helm-flx-mode: t
  helm--remap-mouse-mode: t
  async-bytecomp-package-mode: t
  global-evil-surround-mode: t
  global-git-gutter+-mode: t
  flycheck-pos-tip-mode: t
  global-flycheck-mode: t
  show-smartparens-global-mode: t
  yas-global-mode: t
  evil-escape-mode: t
  global-display-line-numbers-mode: t
  recentf-mode: t
  global-git-commit-mode: t
  winner-mode: t
  projectile-mode: t
  winum-mode: t
  pupo-mode: t
  global-vi-tilde-fringe-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  spaceline-info-mode: t
  spaceline-helm-mode: t
  save-place-mode: t
  savehist-mode: t
  persp-mode: t
  global-hl-todo-mode: t
  purpose-mode: t
  eyebrowse-mode: t
  global-anzu-mode: t
  anzu-mode: t
  editorconfig-mode: t
  clean-aindent-mode: t
  which-key-mode: t
  override-global-mode: t
  shell-dirtrack-mode: t
  evil-mode: t
  evil-local-mode: t
  spacemacs-leader-override-mode: t
  global-spacemacs-leader-override-mode: t
  global-hl-line-mode: t
  xterm-mouse-mode: t
  global-auto-revert-mode: t
  ido-vertical-mode: t
  global-page-break-lines-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  overwrite-mode: overwrite-mode-binary

Load-path shadows:
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Memory information:
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 (symbols 48 66381 9)
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bug#47558: 28.0.50; dlopen 'image not found' gccemacs native-lisp macos

[Eli Zaretskii]

> From: Bryan O'Brien <bryan.m.obrien@gmail.com>
> Date: Thu, 01 Apr 2021 20:36:43 -0500
> 
> 
> Compiling gccemacs from latest git branch.
> Emacs compiles with warnings but no errors.
> Starting Emacs with fails with:
> 
> gccemacs/nextstep/Emacs.app/Contents/MacOS/Emacs -Q --debug-init
> emacs:
> dlopen(/Users/bobrien/src/gnu-emacs/28/gccemacs/nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-2865d7b3/window-0d1b8b93-513ac8ca.eln, 1): image not found
> 
> Workaround is as follows:
> 
> cd ~/src/gnu-emacs/28/gccemacs/nextstep/Emacs.app/Contents
> ln -s ~/src/gnu-emacs/28/gccemacs/native-lisp .

Do you understand the need for this workaround on macOS?  If so, can
you explain what's going on here?

Thanks.

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

[Alan Third]

On Fri, Apr 02, 2021 at 08:46:35AM +0300, Eli Zaretskii wrote:
> > From: Bryan O'Brien <bryan.m.obrien@gmail.com>
> > Date: Thu, 01 Apr 2021 20:36:43 -0500
> > 
> > 
> > Compiling gccemacs from latest git branch.
> > Emacs compiles with warnings but no errors.
> > Starting Emacs with fails with:
> > 
> > gccemacs/nextstep/Emacs.app/Contents/MacOS/Emacs -Q --debug-init
> > emacs:
> > dlopen(/Users/bobrien/src/gnu-emacs/28/gccemacs/nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-2865d7b3/window-0d1b8b93-513ac8ca.eln, 1): image not found
> > 
> > Workaround is as follows:
> > 
> > cd ~/src/gnu-emacs/28/gccemacs/nextstep/Emacs.app/Contents
> > ln -s ~/src/gnu-emacs/28/gccemacs/native-lisp .
> 
> Do you understand the need for this workaround on macOS?  If so, can
> you explain what's going on here?

It looks to me like the "-D" flag for the install command isn't
available on macOS. I think the equivalent is "-d", which appears to
do something different again on GNU/Linux.

Line 752 of Makefile.in:

### Install native compiled Lisp files.
install-eln:
ifeq ($(HAVE_NATIVE_COMP),yes)
	find native-lisp -type f -exec ${INSTALL_DATA} -D "{}" "$(ELN_DESTDIR){}" \;
endif
                                                       ^^
-- 
Alan Third

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

[Eli Zaretskii]

> Date: Fri, 2 Apr 2021 17:29:22 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: Bryan O'Brien <bryan.m.obrien@gmail.com>, 47558@debbugs.gnu.org
> 
> It looks to me like the "-D" flag for the install command isn't
> available on macOS. I think the equivalent is "-d", which appears to
> do something different again on GNU/Linux.
> 
> Line 752 of Makefile.in:
> 
> ### Install native compiled Lisp files.
> install-eln:
> ifeq ($(HAVE_NATIVE_COMP),yes)
> 	find native-lisp -type f -exec ${INSTALL_DATA} -D "{}" "$(ELN_DESTDIR){}" \;
> endif

We should use mkdir explicitly, I think.

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

[Alan Third]

On Fri, Apr 02, 2021 at 09:39:32PM +0300, Eli Zaretskii wrote:
> > Date: Fri, 2 Apr 2021 17:29:22 +0100
> > From: Alan Third <alan@idiocy.org>
> > Cc: Bryan O'Brien <bryan.m.obrien@gmail.com>, 47558@debbugs.gnu.org
> > 
> > It looks to me like the "-D" flag for the install command isn't
> > available on macOS. I think the equivalent is "-d", which appears to
> > do something different again on GNU/Linux.
> > 
> > Line 752 of Makefile.in:
> > 
> > ### Install native compiled Lisp files.
> > install-eln:
> > ifeq ($(HAVE_NATIVE_COMP),yes)
> > 	find native-lisp -type f -exec ${INSTALL_DATA} -D "{}" "$(ELN_DESTDIR){}" \;
> > endif
> 
> We should use mkdir explicitly, I think.

I think I've figured that out, but there's actually another wrinkle.
'make install' is installing the eln files in

    nextstep/Emacs.app/Contents/MacOS/lib/emacs/28.0.50/native-lisp/28.0.50-24e3df15

but the emacs executable is looking for them in

    nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-24e3df15/

And just to add the confusion I feel they should *actually* be
installed in

    nextstep/Emacs.app/Contents/Resources/native-lisp

or similar.

-- 
Alan Third

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

[Eli Zaretskii]

> Date: Fri, 2 Apr 2021 22:51:56 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: bryan.m.obrien@gmail.com, 47558@debbugs.gnu.org
> 
> I think I've figured that out, but there's actually another wrinkle.
> 'make install' is installing the eln files in
> 
>     nextstep/Emacs.app/Contents/MacOS/lib/emacs/28.0.50/native-lisp/28.0.50-24e3df15
> 
> but the emacs executable is looking for them in
> 
>     nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-24e3df15/

The above happens on all platforms, so it isn't macOS specific, right?
Or are you saying there's something macOS specific in ${libdir}?  in
the latter case, what's the story there?

> And just to add the confusion I feel they should *actually* be
> installed in
> 
>     nextstep/Emacs.app/Contents/Resources/native-lisp
> 
> or similar.

Why is that?

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

[Alan Third]

On Sat, Apr 03, 2021 at 09:32:20AM +0300, Eli Zaretskii wrote:
> > Date: Fri, 2 Apr 2021 22:51:56 +0100
> > From: Alan Third <alan@idiocy.org>
> > Cc: bryan.m.obrien@gmail.com, 47558@debbugs.gnu.org
> > 
> > I think I've figured that out, but there's actually another wrinkle.
> > 'make install' is installing the eln files in
> > 
> >     nextstep/Emacs.app/Contents/MacOS/lib/emacs/28.0.50/native-lisp/28.0.50-24e3df15
> > 
> > but the emacs executable is looking for them in
> > 
> >     nextstep/Emacs.app/Contents/MacOS/../native-lisp/28.0.50-24e3df15/
> 
> The above happens on all platforms, so it isn't macOS specific, right?
> Or are you saying there's something macOS specific in ${libdir}?  in
> the latter case, what's the story there?

I think that is what happens on other platforms, but the issue here is
that the emacs executable is placed in an unusual position relative to
the other files because of the NS app bundle format. I'll try to
explain it below, but my knowledge is not deep.

> > And just to add the confusion I feel they should *actually* be
> > installed in
> > 
> >     nextstep/Emacs.app/Contents/Resources/native-lisp
> > 
> > or similar.
> 
> Why is that?

NS uses a special directory structure that appears to the system as an
application. It looks something like this:

Emacs.app
 + Contents
   + MacOS
   | + Emacs <-- The executable
   + Resources
   | + icons
   | + etc
   | + include
   | + info
   | + lisp
   | + ...
   + Info.plist
   + ...

The layout is ever so slightly different under GNUstep.

As far as I can tell the only thing that should be in the
Contents/MacOS directory are executables, practically everything else
lives under Resources.

nsterm.m has three functions for finding the correct path for etc,
exec and the lisp load path. I imagine what we want to do is install
the eln files under Resources, then add a new function that returns the
location of them and use it to set the correct path at the point where
Emacs loads the files.

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?

-- 
Alan Third

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

[Eli Zaretskii]

> 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.

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

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.

Regards

  Andrea

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

[Alan Third]

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?
-- 
Alan Third

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

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?

Thanks

  Andrea

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

[Alan Third]

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


-- 
Alan Third

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

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

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

[Alan Third]

On Tue, Apr 06, 2021 at 07:56:46AM +0000, Andrea Corallo wrote:
> Alan Third <alan@idiocy.org> writes:
> > 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?

Yes, I've tried 'make bootstrap' to no avail.

FWIW, as I mentioned earlier in this thread, which you may not have
seen, NS provides a method for detecting which paths to use if running
in the self contained bundle, which Emacs already uses for finding the
lisp path, exec path, etc. Would it be worth extending this to work
with the eln files?

-- 
Alan Third

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Alan Third <alan@idiocy.org> writes:

> On Tue, Apr 06, 2021 at 07:56:46AM +0000, Andrea Corallo wrote:
>> Alan Third <alan@idiocy.org> writes:
>> > 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?
>
> Yes, I've tried 'make bootstrap' to no avail.

could you share the output of like "make bootstrap V=1"? (go parallel if
you like)

> FWIW, as I mentioned earlier in this thread, which you may not have
> seen, NS provides a method for detecting which paths to use if running
> in the self contained bundle, which Emacs already uses for finding the
> lisp path, exec path, etc. Would it be worth extending this to work
> with the eln files?

I think talking about preloaded files we'll want to to stick to the
relative path to the binary as it should work on every system, but this
might information be useful in the future for the filename hashing.

Thanks

  Andrea

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

[Alan Third]

[-- Attachment #1: Type: text/plain, Size: 805 bytes --]

On Tue, Apr 06, 2021 at 02:51:46PM +0000, Andrea Corallo wrote:
> Alan Third <alan@idiocy.org> writes:
> 
> > On Tue, Apr 06, 2021 at 07:56:46AM +0000, Andrea Corallo wrote:
> >> Alan Third <alan@idiocy.org> writes:
> >> > 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?
> >
> > Yes, I've tried 'make bootstrap' to no avail.
> 
> could you share the output of like "make bootstrap V=1"? (go parallel if
> you like)

Attached.
-- 
Alan Third

[-- Attachment #2: bootstrap.log.gz --]
[-- Type: application/x-gunzip, Size: 35356 bytes --]

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

[-- Attachment #1: Type: text/plain, Size: 1780 bytes --]

Alan Third <alan@idiocy.org> writes:

> On Tue, Apr 06, 2021 at 02:51:46PM +0000, Andrea Corallo wrote:
>> Alan Third <alan@idiocy.org> writes:
>> 
>> > On Tue, Apr 06, 2021 at 07:56:46AM +0000, Andrea Corallo wrote:
>> >> Alan Third <alan@idiocy.org> writes:
>> >> > 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?
>> >
>> > Yes, I've tried 'make bootstrap' to no avail.
>> 
>> could you share the output of like "make bootstrap V=1"? (go parallel if
>> you like)
>
> Attached.

Okay the log looks good AFAICT.

We are suggesting the eln to go in:
/Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/bin/

and the eln in:
/Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/Resources/

For each compilation unit being dumped we modify the filename in a pair
in the form of (rel-filename-from-install-bin
. rel-filename-from-local-bin) in loadup.el:467 so we'll be able to
locate those compilation units when resurecting.

So either we compute wrongly the 'rel-filename-from-install-bin' there
or something goes wrong in pdumper.c:5277 (where we use it to to
identify if Emacs was installed or not).

On this subject I just realized that there we used concat in place of
`expand-file-name' and fixed that with 6568198213.

If this does not help I suggest we apply the attached and re-bootstrap
to see if the 'rel-filename-from-install-bin' we are constructing is
correct.

Thanks!

  Andrea


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: loadup.patch --]
[-- Type: text/x-diff, Size: 1562 bytes --]

diff --git a/lisp/loadup.el b/lisp/loadup.el
index 650288f9f8..3331445ff8 100644
--- a/lisp/loadup.el
+++ b/lisp/loadup.el
@@ -475,15 +475,17 @@
                                             eln-dest-dir)))
                    (native-comp-unit-set-file
                     cu
-	            (cons
-                     ;; Relative filename from the installed binary.
-                     (file-relative-name (expand-file-name
-                                          (file-name-nondirectory
-                                           file)
-                                          eln-dest-dir-eff)
-                                         bin-dest-dir)
-                     ;; Relative filename from the built uninstalled binary.
-                     (file-relative-name file invocation-directory)))))
+	            (let ((tmp (cons
+                                ;; Relative filename from the installed binary.
+                                (file-relative-name (expand-file-name
+                                                     (file-name-nondirectory
+                                                      file)
+                                                     eln-dest-dir-eff)
+                                                    bin-dest-dir)
+                                ;; Relative filename from the built uninstalled binary.
+                                (file-relative-name file invocation-directory))))
+                      (print tmp)
+                      tmp))))
 	       h))))
 
 (when (hash-table-p purify-flag)

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

[Alan Third]

[-- Attachment #1: Type: text/plain, Size: 854 bytes --]

On Tue, Apr 06, 2021 at 07:26:16PM +0000, Andrea Corallo wrote:
> 
> Okay the log looks good AFAICT.
> 
> We are suggesting the eln to go in:
> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/bin/
> 
> and the eln in:
> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/Resources/

OK, I think I see what's going on. The binary is installed in
Emacs.app/Contents/MacOS, but the bindir is
Emacs.app/Contents/MacOS/bin, so we're going one level too far up when
generating the eln path.

"../../Resources/native-lisp/28.0.50-0f05d3d3/preloaded/misc-lang-7cb33d20-db3eb4ae.eln"

> If this does not help I suggest we apply the attached and re-bootstrap
> to see if the 'rel-filename-from-install-bin' we are constructing is
> correct.

I've attached the new bootstrap log in case I'm wrong and you can see
something else.
-- 
Alan Third

[-- Attachment #2: bootstrap.log.gz --]
[-- Type: application/x-gunzip, Size: 37475 bytes --]

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Alan Third <alan@idiocy.org> writes:

> On Tue, Apr 06, 2021 at 07:26:16PM +0000, Andrea Corallo wrote:
>> 
>> Okay the log looks good AFAICT.
>> 
>> We are suggesting the eln to go in:
>> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/bin/
>> 
>> and the eln in:
>> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/Resources/
>
> OK, I think I see what's going on. The binary is installed in
> Emacs.app/Contents/MacOS, but the bindir is
> Emacs.app/Contents/MacOS/bin, so we're going one level too far up when
> generating the eln path.
>
> "../../Resources/native-lisp/28.0.50-0f05d3d3/preloaded/misc-lang-7cb33d20-db3eb4ae.eln"
>
>> If this does not help I suggest we apply the attached and re-bootstrap
>> to see if the 'rel-filename-from-install-bin' we are constructing is
>> correct.
>
> I've attached the new bootstrap log in case I'm wrong and you can see
> something else.

I think your analysis is correct.

ATM we form BIN_DESTDIR as '$(DESTDIR)${bindir}/' (Makefile.in:419),
maybe we should use 'ns_appbindir' to form it?

Thanks

  Andrea

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

[Alan Third]

On Tue, Apr 06, 2021 at 09:22:57PM +0000, Andrea Corallo wrote:
> Alan Third <alan@idiocy.org> writes:
> 
> > On Tue, Apr 06, 2021 at 07:26:16PM +0000, Andrea Corallo wrote:
> >> 
> >> Okay the log looks good AFAICT.
> >> 
> >> We are suggesting the eln to go in:
> >> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/bin/
> >> 
> >> and the eln in:
> >> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/Resources/
> >
> > OK, I think I see what's going on. The binary is installed in
> > Emacs.app/Contents/MacOS, but the bindir is
> > Emacs.app/Contents/MacOS/bin, so we're going one level too far up when
> > generating the eln path.
> >
> > "../../Resources/native-lisp/28.0.50-0f05d3d3/preloaded/misc-lang-7cb33d20-db3eb4ae.eln"
> >
> >> If this does not help I suggest we apply the attached and re-bootstrap
> >> to see if the 'rel-filename-from-install-bin' we are constructing is
> >> correct.
> >
> > I've attached the new bootstrap log in case I'm wrong and you can see
> > something else.
> 
> I think your analysis is correct.
> 
> ATM we form BIN_DESTDIR as '$(DESTDIR)${bindir}/' (Makefile.in:419),
> maybe we should use 'ns_appbindir' to form it?

Yup, that seems to have solved it. I'm doing this:

modified   Makefile.in
@@ -420,8 +420,13 @@ lib lib-src lisp nt:
 dirstate = .git/logs/HEAD
 VCSWITNESS = $(if $(wildcard $(srcdir)/$(dirstate)),$$(srcdir)/../$(dirstate))
 src: Makefile
+ifeq (${ns_self_contained},no)
 	$(MAKE) -C $@ VCSWITNESS='$(VCSWITNESS)' BIN_DESTDIR='$(DESTDIR)${bindir}/' \
 		 ELN_DESTDIR='$(ELN_DESTDIR)' all
+else
+	$(MAKE) -C $@ VCSWITNESS='$(VCSWITNESS)' BIN_DESTDIR='${ns_appbindir}/' \
+		 ELN_DESTDIR='$(ELN_DESTDIR)' all
+endif
 
 blessmail: Makefile src
 	$(MAKE) -C lib-src maybe-blessmail


which works, but I don't know much about makefiles so there may be a
neater way to do it.

-- 
Alan Third

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

[Bryan O'Brien]

[-- Attachment #1: Type: text/plain, Size: 2249 bytes --]

I’m not familiar with the protocols here, so I apologize if this is just noise.

Modifying my Makefile.in (as Alan provided) bypasses the dlopen error originally reported.

Thank you all.

> On Apr 6, 2021, at 16:33, Alan Third <alan@idiocy.org> wrote:
> 
> On Tue, Apr 06, 2021 at 09:22:57PM +0000, Andrea Corallo wrote:
>> Alan Third <alan@idiocy.org> writes:
>> 
>>> On Tue, Apr 06, 2021 at 07:26:16PM +0000, Andrea Corallo wrote:
>>>> 
>>>> Okay the log looks good AFAICT.
>>>> 
>>>> We are suggesting the eln to go in:
>>>> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/bin/
>>>> 
>>>> and the eln in:
>>>> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/Resources/
>>> 
>>> OK, I think I see what's going on. The binary is installed in
>>> Emacs.app/Contents/MacOS, but the bindir is
>>> Emacs.app/Contents/MacOS/bin, so we're going one level too far up when
>>> generating the eln path.
>>> 
>>> "../../Resources/native-lisp/28.0.50-0f05d3d3/preloaded/misc-lang-7cb33d20-db3eb4ae.eln"
>>> 
>>>> If this does not help I suggest we apply the attached and re-bootstrap
>>>> to see if the 'rel-filename-from-install-bin' we are constructing is
>>>> correct.
>>> 
>>> I've attached the new bootstrap log in case I'm wrong and you can see
>>> something else.
>> 
>> I think your analysis is correct.
>> 
>> ATM we form BIN_DESTDIR as '$(DESTDIR)${bindir}/' (Makefile.in:419),
>> maybe we should use 'ns_appbindir' to form it?
> 
> Yup, that seems to have solved it. I'm doing this:
> 
> modified   Makefile.in
> @@ -420,8 +420,13 @@ lib lib-src lisp nt:
> dirstate = .git/logs/HEAD
> VCSWITNESS = $(if $(wildcard $(srcdir)/$(dirstate)),$$(srcdir)/../$(dirstate))
> src: Makefile
> +ifeq (${ns_self_contained},no)
> 	$(MAKE) -C $@ VCSWITNESS='$(VCSWITNESS)' BIN_DESTDIR='$(DESTDIR)${bindir}/' \
> 		 ELN_DESTDIR='$(ELN_DESTDIR)' all
> +else
> +	$(MAKE) -C $@ VCSWITNESS='$(VCSWITNESS)' BIN_DESTDIR='${ns_appbindir}/' \
> +		 ELN_DESTDIR='$(ELN_DESTDIR)' all
> +endif
> 
> blessmail: Makefile src
> 	$(MAKE) -C lib-src maybe-blessmail
> 
> 
> which works, but I don't know much about makefiles so there may be a
> neater way to do it.
> 
> --
> Alan Third


[-- Attachment #2: Message signed with OpenPGP --]
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bug#47558: 28.0.50; dlopen 'image not found' gccemacs native-lisp macos

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Alan Third <alan@idiocy.org> writes:

> On Tue, Apr 06, 2021 at 09:22:57PM +0000, Andrea Corallo wrote:
>> Alan Third <alan@idiocy.org> writes:
>> 
>> > On Tue, Apr 06, 2021 at 07:26:16PM +0000, Andrea Corallo wrote:
>> >> 
>> >> Okay the log looks good AFAICT.
>> >> 
>> >> We are suggesting the eln to go in:
>> >> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/MacOS/bin/
>> >> 
>> >> and the eln in:
>> >> /Users/alan/src/emacs/native/nextstep/Emacs.app/Contents/Resources/
>> >
>> > OK, I think I see what's going on. The binary is installed in
>> > Emacs.app/Contents/MacOS, but the bindir is
>> > Emacs.app/Contents/MacOS/bin, so we're going one level too far up when
>> > generating the eln path.
>> >
>> > "../../Resources/native-lisp/28.0.50-0f05d3d3/preloaded/misc-lang-7cb33d20-db3eb4ae.eln"
>> >
>> >> If this does not help I suggest we apply the attached and re-bootstrap
>> >> to see if the 'rel-filename-from-install-bin' we are constructing is
>> >> correct.
>> >
>> > I've attached the new bootstrap log in case I'm wrong and you can see
>> > something else.
>> 
>> I think your analysis is correct.
>> 
>> ATM we form BIN_DESTDIR as '$(DESTDIR)${bindir}/' (Makefile.in:419),
>> maybe we should use 'ns_appbindir' to form it?
>
> Yup, that seems to have solved it. I'm doing this:

Cool!

> modified   Makefile.in
> @@ -420,8 +420,13 @@ lib lib-src lisp nt:
>  dirstate = .git/logs/HEAD
>  VCSWITNESS = $(if $(wildcard $(srcdir)/$(dirstate)),$$(srcdir)/../$(dirstate))
>  src: Makefile
> +ifeq (${ns_self_contained},no)
>  	$(MAKE) -C $@ VCSWITNESS='$(VCSWITNESS)' BIN_DESTDIR='$(DESTDIR)${bindir}/' \
>  		 ELN_DESTDIR='$(ELN_DESTDIR)' all
> +else
> +	$(MAKE) -C $@ VCSWITNESS='$(VCSWITNESS)' BIN_DESTDIR='${ns_appbindir}/' \
> +		 ELN_DESTDIR='$(ELN_DESTDIR)' all
> +endif
>  
>  blessmail: Makefile src
>  	$(MAKE) -C lib-src maybe-blessmail
>
>
> which works, but I don't know much about makefiles so there may be a
> neater way to do it.

I think we could prepare BIN_DESTDIR near ELN_DESTDIR so we don't have
to duplicate the sub-make invocation in this target.  I pushed
ce15b23846 that does that.

Please feel free to install a patch with all the other necessary changes
to have it working on MacOS.

Thanks!

  Andrea

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

[Alan Third]

On Wed, Apr 07, 2021 at 07:53:50AM +0000, Andrea Corallo wrote:
> 
> I think we could prepare BIN_DESTDIR near ELN_DESTDIR so we don't have
> to duplicate the sub-make invocation in this target.  I pushed
> ce15b23846 that does that.

Thanks!

> Please feel free to install a patch with all the other necessary changes
> to have it working on MacOS.

Done.

Bryan, can you give it a go again, please?
-- 
Alan Third

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Alan Third <alan@idiocy.org> writes:

> On Wed, Apr 07, 2021 at 07:53:50AM +0000, Andrea Corallo wrote:
>> 
>> I think we could prepare BIN_DESTDIR near ELN_DESTDIR so we don't have
>> to duplicate the sub-make invocation in this target.  I pushed
>> ce15b23846 that does that.
>
> Thanks!
>
>> Please feel free to install a patch with all the other necessary changes
>> to have it working on MacOS.
>
> Done.

Wonderful thanks.

A curiosity looking at c35a515a2f:

+        LDFLAGS="$LDFLAGS -L${BREW_LIBGCCJIT_PREFIX}/lib/gcc/10 -I${BREW_LIBGCCJIT_PREFIX}/include" 
                                                              ^^^

Does this mean will have to touch configure.ac when brew will provide gcc11?

Thanks

  Andrea

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

[Alan Third]

On Wed, Apr 07, 2021 at 09:08:36AM +0000, Andrea Corallo wrote:
> A curiosity looking at c35a515a2f:
> 
> +        LDFLAGS="$LDFLAGS -L${BREW_LIBGCCJIT_PREFIX}/lib/gcc/10 -I${BREW_LIBGCCJIT_PREFIX}/include" 
>                                                               ^^^
> 
> Does this mean will have to touch configure.ac when brew will provide gcc11?

I think so. I can't see any way to get this path information out of
the brew command. Perhaps we need to do some find magic to get the
actual directory...?

This appears to work, but I don't see anything else like it in
configure.ac, so it's maybe not a good idea:

        brew_libdir=`dirname ${BREW_LIBGCCJIT_PREFIX}/lib/gcc/*/libgccjit.so`
        LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"

The alternative is just to leave people to set up these flags
themselves, but I'd rather not if we can avoid it.
--
Alan Third

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

[Andreas Schwab]

On Apr 07 2021, Alan Third wrote:

> On Wed, Apr 07, 2021 at 09:08:36AM +0000, Andrea Corallo wrote:
>> A curiosity looking at c35a515a2f:
>> 
>> +        LDFLAGS="$LDFLAGS -L${BREW_LIBGCCJIT_PREFIX}/lib/gcc/10 -I${BREW_LIBGCCJIT_PREFIX}/include" 
>>                                                               ^^^
>> 
>> Does this mean will have to touch configure.ac when brew will provide gcc11?
>
> I think so. I can't see any way to get this path information out of
> the brew command. Perhaps we need to do some find magic to get the
> actual directory...?

gcc -print-file-name=libgccjit.so

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."

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

[Andreas Schwab]

On Apr 07 2021, Alan Third wrote:

> This appears to work, but I don't see anything else like it in
> configure.ac, so it's maybe not a good idea:
>
>         brew_libdir=`dirname ${BREW_LIBGCCJIT_PREFIX}/lib/gcc/*/libgccjit.so`
>         LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
>
> The alternative is just to leave people to set up these flags
> themselves, but I'd rather not if we can avoid it.

Why do you need that in the first place?  The compiler should be looking
there by default.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."

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

[Alan Third]

On Wed, Apr 07, 2021 at 12:35:10PM +0200, Andreas Schwab wrote:
> On Apr 07 2021, Alan Third wrote:
> 
> > This appears to work, but I don't see anything else like it in
> > configure.ac, so it's maybe not a good idea:
> >
> >         brew_libdir=`dirname ${BREW_LIBGCCJIT_PREFIX}/lib/gcc/*/libgccjit.so`
> >         LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
> >
> > The alternative is just to leave people to set up these flags
> > themselves, but I'd rather not if we can avoid it.
> 
> Why do you need that in the first place?  The compiler should be looking
> there by default.

It may be because we have to build with clang, or it may be because of
how homebrew installs things. Or both. I'm not sure.

    breton:/Users/alan>gcc -print-file-name=libgccjit.so
    libgccjit.so

which isn't helpful, but again may be because gcc is actually clang.
-- 
Alan Third

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

[Eli Zaretskii]

> Date: Wed, 7 Apr 2021 11:48:23 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: Andrea Corallo <akrl@sdf.org>, Eli Zaretskii <eliz@gnu.org>,
> 	bryan.m.obrien@gmail.com, 47558@debbugs.gnu.org
> 
> > Why do you need that in the first place?  The compiler should be looking
> > there by default.
> 
> It may be because we have to build with clang, or it may be because of
> how homebrew installs things. Or both. I'm not sure.

That alone is worth a bug report against clang, I think.

>     breton:/Users/alan>gcc -print-file-name=libgccjit.so
>     libgccjit.so
> 
> which isn't helpful, but again may be because gcc is actually clang.

The above means the compiler cannot find the file.  Does the file's
name actually end in .so, or is it some .dynlib or some such?

Does clang support the -v switch, whereby it emits details about the
directories it searches and libraries it scans?  If so, can you run
the link command with that switch and show the entire output?

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

[Eli Zaretskii]

> Date: Wed, 07 Apr 2021 14:50:03 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: bryan.m.obrien@gmail.com, akrl@sdf.org, schwab@linux-m68k.org,
>  47558@debbugs.gnu.org
> 
> Does clang support the -v switch, whereby it emits details about the
> directories it searches and libraries it scans?  If so, can you run
> the link command with that switch and show the entire output?

You could also try

   gcc -print-search-dirs

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

[Alan Third]

On Wed, Apr 07, 2021 at 02:50:03PM +0300, Eli Zaretskii wrote:
> > Date: Wed, 7 Apr 2021 11:48:23 +0100
> > From: Alan Third <alan@idiocy.org>
> > Cc: Andrea Corallo <akrl@sdf.org>, Eli Zaretskii <eliz@gnu.org>,
> > 	bryan.m.obrien@gmail.com, 47558@debbugs.gnu.org
> > 
> > > Why do you need that in the first place?  The compiler should be looking
> > > there by default.
> > 
> > It may be because we have to build with clang, or it may be because of
> > how homebrew installs things. Or both. I'm not sure.
> 
> That alone is worth a bug report against clang, I think.

I think it's more likely to be Homebrew that's at fault, and I think
they view this kind of thing as a feature rather than a bug. I believe
the idea is for homebrew to interfere with the system as little as
possible.

Neither clang, nor (homebrew installed) gcc can find the libraries on
their own.

gcc:

breton:/Users/alan>gcc-10 -v -print-file-name=libgccjit.so
Using built-in specs.
COLLECT_GCC=gcc-10
COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc/10.2.0_4/libexec/gcc/x86_64-apple-darwin18/10.2.0/lto-wrapper
libgccjit.so

clang:

breton:/Users/alan>clang -v -print-file-name=libgccjit.so
Apple clang version 11.0.0 (clang-1100.0.33.17)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
libgccjit.so


> >     breton:/Users/alan>gcc -print-file-name=libgccjit.so
> >     libgccjit.so
> > 
> > which isn't helpful, but again may be because gcc is actually clang.
> 
> The above means the compiler cannot find the file.  Does the file's
> name actually end in .so, or is it some .dynlib or some such?

Definitely .so:

breton:/Users/alan>ls `brew --prefix libgccjit`/lib/gcc/10/
libgccjit.so       libgccjit.so.0     libgccjit.so.0.0.1

> Does clang support the -v switch, whereby it emits details about the
> directories it searches and libraries it scans?  If so, can you run
> the link command with that switch and show the entire output?

Shown above, but there's also

breton:/Users/alan>clang -print-search-dirs
programs: =/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
libraries:
=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/11.0.0

This is relatively common with Homebrew. If you look in configure.ac
there are a few places where we have to modify PKG_CONFIG_PATH because
homebrew doesn't link in all the libraries it installs.

I'm also unsure how portable we need to be with this code since
homebrew is macOS specific and to my knowledge this problem only
arises with homebrew.

-- 
Alan Third

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

[Eli Zaretskii]

> Date: Wed, 7 Apr 2021 10:58:09 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: Eli Zaretskii <eliz@gnu.org>, bryan.m.obrien@gmail.com,
> 	47558@debbugs.gnu.org
> 
> This appears to work, but I don't see anything else like it in
> configure.ac, so it's maybe not a good idea:
> 
>         brew_libdir=`dirname ${BREW_LIBGCCJIT_PREFIX}/lib/gcc/*/libgccjit.so`
>         LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"

This is indeed non-portable, but using 'find' pipes into a suitable
Sed script should be able to do that portably.

It is indeed suboptimal to have the compiler version in these file
names, so I'd prefer to solve it in a cleaner way.

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

[Alan Third]

On Wed, Apr 07, 2021 at 02:45:59PM +0300, Eli Zaretskii wrote:
> > Date: Wed, 7 Apr 2021 10:58:09 +0100
> > From: Alan Third <alan@idiocy.org>
> > Cc: Eli Zaretskii <eliz@gnu.org>, bryan.m.obrien@gmail.com,
> > 	47558@debbugs.gnu.org
> > 
> > This appears to work, but I don't see anything else like it in
> > configure.ac, so it's maybe not a good idea:
> > 
> >         brew_libdir=`dirname ${BREW_LIBGCCJIT_PREFIX}/lib/gcc/*/libgccjit.so`
> >         LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
> 
> This is indeed non-portable, but using 'find' pipes into a suitable
> Sed script should be able to do that portably.

Is this better?

    if test -n "$BREW"; then
      BREW_LIBGCCJIT_PREFIX=`$BREW --prefix --installed libgccjit 2>/dev/null`
      if test "$BREW_LIBGCCJIT_PREFIX"; then
        brew_libdir=`find ${BREW_LIBGCCJIT_PREFIX}/ -name \*.so \
                     | sed -e '1!d;s|/[[^/]]*\.so$||'`
        CFLAGS="$CFLAGS -I${BREW_LIBGCCJIT_PREFIX}/include"
        LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
      fi
    fi

-- 
Alan Third

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

[Eli Zaretskii]

> Date: Wed, 7 Apr 2021 15:20:25 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: akrl@sdf.org, bryan.m.obrien@gmail.com, 47558@debbugs.gnu.org
> 
> > This is indeed non-portable, but using 'find' pipes into a suitable
> > Sed script should be able to do that portably.
> 
> Is this better?
> 
>     if test -n "$BREW"; then
>       BREW_LIBGCCJIT_PREFIX=`$BREW --prefix --installed libgccjit 2>/dev/null`
>       if test "$BREW_LIBGCCJIT_PREFIX"; then
>         brew_libdir=`find ${BREW_LIBGCCJIT_PREFIX}/ -name \*.so \
>                      | sed -e '1!d;s|/[[^/]]*\.so$||'`
>         CFLAGS="$CFLAGS -I${BREW_LIBGCCJIT_PREFIX}/include"
>         LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
>       fi
>     fi

Yes, I think so.

Thanks.

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

[Bryan O'Brien]

I replied incorrectly, sorry about that.

Latest build on most recent git branch was successful.

Alan Third <alan@idiocy.org> writes:

> On Wed, Apr 07, 2021 at 07:53:50AM +0000, Andrea Corallo wrote:
>> 
>> I think we could prepare BIN_DESTDIR near ELN_DESTDIR so we don't have
>> to duplicate the sub-make invocation in this target.  I pushed
>> ce15b23846 that does that.
>
> Thanks!
>
>> Please feel free to install a patch with all the other necessary changes
>> to have it working on MacOS.
>
> Done.
>
> Bryan, can you give it a go again, please?

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

"Bryan O'Brien" <bryan.m.obrien@gmail.com> writes:

> I replied incorrectly, sorry about that.
>
> Latest build on most recent git branch was successful.

Very nice!  I'm closing then.

Thanks all

  Andrea

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

[Eli Zaretskii]

> From: Andrea Corallo <akrl@sdf.org>
> Cc: Eli Zaretskii <eliz@gnu.org>, bryan.m.obrien@gmail.com,
>         47558@debbugs.gnu.org
> Date: Tue, 06 Apr 2021 19:26:16 +0000
> 
> On this subject I just realized that there we used concat in place of
> `expand-file-name' and fixed that with 6568198213.

I needed to revert that part, because we cannot call expand-file-name
so early into startup, at least not on MS-Windows.  Was there some
real problem you saw that was caused by using concat2 there?

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

[Bryan O'Brien]

Error is resolved with latest branch.
This is the build shell I used:

# native-comp optimization
export CFLAGS="-I$(brew --prefix libgccjit)/include"
export LDFLAGS="-L$(brew --prefix libgccjit)/lib/gcc/10" 
export CC="clang"

cd gccemacs || exit

git clean -xfd

./autogen.sh

./configure --with-native-compilation --with-x-widgets

make NATIVE_FULL_AOT=1 -j 16

make -j 16 install


Eli Zaretskii <eliz@gnu.org> writes:

>> From: Andrea Corallo <akrl@sdf.org>
>> Cc: Eli Zaretskii <eliz@gnu.org>, bryan.m.obrien@gmail.com,
>>         47558@debbugs.gnu.org
>> Date: Tue, 06 Apr 2021 19:26:16 +0000
>> 
>> On this subject I just realized that there we used concat in place of
>> `expand-file-name' and fixed that with 6568198213.
>
> I needed to revert that part, because we cannot call expand-file-name
> so early into startup, at least not on MS-Windows.  Was there some
> real problem you saw that was caused by using concat2 there?

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

[Andrea Corallo via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Andrea Corallo <akrl@sdf.org>
>> Cc: Eli Zaretskii <eliz@gnu.org>, bryan.m.obrien@gmail.com,
>>         47558@debbugs.gnu.org
>> Date: Tue, 06 Apr 2021 19:26:16 +0000
>> 
>> On this subject I just realized that there we used concat in place of
>> `expand-file-name' and fixed that with 6568198213.
>
> I needed to revert that part, because we cannot call expand-file-name
> so early into startup, at least not on MS-Windows.

Sorry thanks for that.

> Was there some real problem you saw that was caused by using concat2
> there?

No, I've just spotted the code and once here was working I changed it.

I was going to add a comment but I see it's already done, thanks!

  Andrea