On 29/09/19, at 23:40, John Ralls wrote:

On Sep 29, 2019, at 2:32 PM, John Ralls <jra...@ceridwen.us> wrote:



On Sep 29, 2019, at 12:25 PM, Timo <timomli...@gmail.com> wrote:

On 29/09/19, at 00:26, John Ralls wrote:
On Sep 28, 2019, at 10:00 AM, Timo <timomli...@gmail.com> wrote:

On 28/09/19, at 18:45, John Ralls wrote:
On Sep 28, 2019, at 9:30 AM, Timo <timomli...@gmail.com> wrote:

On 28/09/19, at 16:17, John Ralls wrote:
On Sep 28, 2019, at 3:20 AM, Timo via gtk-osx-users-list 
<gtk-osx-users-list@gnome.org> wrote:

Hello, I followed the build instructions on the wiki and everything's built 
correctly. However my application fails to run with a warning about 
libpango-1.0.0.dylib not being found and then a traceback. I can narrow it down 
to just doing a `from gi.repository import Gtk`.

    bash-3.2$ python3
    Python 3.6.8 (default, Sep 24 2019, 17:23:22)
    [GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
from gi.repository import Gtk
    ** (process:45468): WARNING **: 20:30:34.767: Failed to load shared library 
'libpango-1.0.0.dylib' referenced by the typelib: dlopen(libpango-1.0.0.dylib, 
9): image not found
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "<frozen importlib._bootstrap>", line 971, in _find_and_load
      File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
      File "<frozen importlib._bootstrap>", line 626, in 
_load_backward_compatible
      File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/importer.py", 
line 145, in load_module
        importlib.import_module('gi.repository.' + dep.split("-")[0])
      File "/Users/gtk3/gtk/inst/lib/python3.6/importlib/__init__.py", line 
126, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 994, in _gcd_import
      File "<frozen importlib._bootstrap>", line 971, in _find_and_load
      File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
      File "<frozen importlib._bootstrap>", line 626, in 
_load_backward_compatible
      File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/importer.py", 
line 145, in load_module
        importlib.import_module('gi.repository.' + dep.split("-")[0])
      File "/Users/gtk3/gtk/inst/lib/python3.6/importlib/__init__.py", line 
126, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 994, in _gcd_import
      File "<frozen importlib._bootstrap>", line 971, in _find_and_load
      File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
      File "<frozen importlib._bootstrap>", line 626, in 
_load_backward_compatible
      File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/importer.py", 
line 146, in load_module
        dynamic_module = load_overrides(introspection_module)
      File 
"/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/overrides/__init__.py", 
line 118, in load_overrides
        override_mod = importlib.import_module(override_package_name)
      File "/Users/gtk3/gtk/inst/lib/python3.6/importlib/__init__.py", line 
126, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/overrides/Pango.py", 
line 41, in <module>
        FontDescription = override(FontDescription)
      File 
"/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/overrides/__init__.py", 
line 195, in override
        assert g_type != TYPE_NONE
    AssertionError


Explicitly setting DYLD_FALLBACK_LIBRARY_PATH seems to fix the problem:

    bash-3.2$ export DYLD_FALLBACK_LIBRARY_PATH=/Users/gtk3/gtk/inst/lib
    bash-3.2$ python3
    Python 3.6.8 (default, Sep 24 2019, 17:23:22)
    [GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
from gi.repository import Gtk
    (.:45493): Gtk-WARNING **: 20:33:47.938: Locale not supported by C library.
        Using the fallback 'C' locale.
    __main__:1: PyGIWarning: Gtk was imported without specifying a version 
first. Use gi.require_version('Gtk', '3.0') before import to ensure that the 
right version gets loaded.


However the same problem happens when I bundle the application. Again, only 
doing the GTK import in the myapp_launcher.py file gives the same error 
(launcher file taken from gtk-mac-bundler example and Gramps for the updated 
version).

It already has `environ['DYLD_LIBRARY_PATH'] = bundle_lib`, but even adding 
`environ['DYLD_FALLBACK_LIBRARY_PATH'] = bundle_lib` makes no differences. 
Printing `bundle_lib` points to the lib dir inside the bundle and printing 
`os.path.exists(bundle_lib, 'libpango-1.0.0.dylib')` shows the file is actually 
there. So it's not picking up the Python set env variable.

It's only after I do `export 
DYLD_FALLBACK_LIBRARY_PATH=/path/to/myapp_bundle.app/Contents/Resources/lib` 
that the bundled app will run, but is of course only feasible to do on my dev 
machine.

Is it my environment that's tainted somehow? Did the build not correctly pick 
up paths?
It mostly has to do with meson and rpaths. The latest commit to 
gtk-mac-bundler, 
https://gitlab.gnome.org/GNOME/gtk-mac-bundler/commit/93edee7e2d0ec8230aaf5acb21452202b10cd678,
 was supposed to fix it, but meson's behavior has been something of a moving 
target.
I used the git clone method for installing gtk-mac-bundler, not the 0.7.4 
package in case that matters.

What are the installed names (use otool -L and look at the first line) of 
libpango-1.0.0.dylib in your installed prefix and in your bundle?
gtk/inst/lib/libpango-1.0.0.dylib:
    /Users/gtk3/gtk/inst/lib/libpango-1.0.0.dylib (compatibility version 
4401.0.0, current version 4401.6.0)

myapp.app/Contents/Resources/lib/libpango-1.0.0.dylib:
    @executable_path/../Resources//lib/libpango-1.0.0.dylib (compatibility 
version 4401.0.0, current version 4401.6.0)

Looks like there's a double slash between Resources and lib. There are some 
more lines starting with @executable_path for other libs in this output, but 
slashes look correct:

    @executable_path/../Resources/lib/libglib-2.0.0.dylib (compatibility 
version 6001.0.0, current version 6001.6.0)
    @executable_path/../Resources/lib/libgobject-2.0.0.dylib (compatibility 
version 6001.0.0, current version 6001.6.0)
    @executable_path/../Resources/lib/libfribidi.0.dylib (compatibility version 
0.0.0, current version 0.0.0)
    @executable_path/../Resources/lib/libharfbuzz.0.dylib (compatibility 
version 20504.0.0, current version 20504.0.0)


What version of meson did pip install for you?
bash-3.2$ python -m pip show meson
Name: meson
Version: 0.51.2
Summary: A high performance build system
Home-page: http://mesonbuild.com
Author: Jussi Pakkanen
Author-email: jpakk...@gmail.com
License: Apache License, Version 2.0
Location: 
/Users/gtk3/.new_local/share/venv/etc-QjyTq6eG/lib/python3.6/site-packages
Requires:
Required-by:
A double slash doesn't matter.
Check the typelib with `strings 
path/to/bundle/Contents/Resources/lib/girepository-1.0/Pango-1.0.typelib | grep 
libpango`. It should also say @executable_path/../lib/libpango-1.0.0.dylib.
Hmm, it doesn't:

$ strings myapp.app/Contents/Resources/lib/girepository-1.0/Pango-1.0.typelib | 
grep libpango
libpango-1.0.0.dylib

Since you're using a launcher script, is the actual executable (e.g. python) in 
bundle/Contents/MacOS?
There are two executables: myapp and python3.6

To be clear, I'm not using the launcher shell script, but the compiled 
python-launcher.c and gtk_launcher.py files.
So the bundler didn't rerun gir-scanner and gir-compiler.

Oh, crud. I bet you cloned gtk-mac-bundler from GitHub instead of 
gitlab.gnome.org, I see that I have been pushing only to the latter one. I just 
got GitHub up to date, so if that's where you got it pull and bundle again.

My bash history showed I cloned from GitLab, not GitHub. I did a `git pull` and 
everything was already up to date. Just to be sure I removed gtk-mac-bundler 
and did a fresh clone/make install, but the error remains.

Can the error already happen earlier, during build perhaps? Since I already 
have to set the DYLD_FALLBACK_LIBRARY_PATH for just running the app without 
even bundling.
At the base it's because meson wants to use @rpath, see 
https://github.com/mesonbuild/meson/issues/3574. This led to 
https://gitlab.gnome.org/GNOME/gobject-introspection/issues/222.

Running in a jhbuild shell should get DYLD_LIBRARY_PATH set for you and that 
should get dlopen() to load the libraries/modules with basename-only paths in 
foo.typelib.
For your bundle, 
https://gitlab.gnome.org/GNOME/gtk-mac-bundler/commit/93edee7e2d0ec8230aaf5acb21452202b10cd678
 is supposed to fix the paths in the Gir files to be 
@excutable_path/../Resources/lib/foo.dylib and then recompile the type libs. If 
you're sure you've got that commit and it's not working then we need to figure 
out why not.
Oh, one more puzzle-piece: You need to load the Gir files like this:

   <gir>
     ${prefix}/share/gir-1.0/*.gir
   </gir>

in your bundle file and not load the typelibs explicitly. I neglected to 
document that in the wiki, I'm doing so now.

We're a step closer. I added some print statements in that gtk-mac-bundler block of code to see if it really was being called and what it was doing. This showed that it was changing what's expected and fixed the paths. For example for Pango:

    transform file: /Users/gtk3/gtk/inst/share/gir-1.0/Pango-1.0.gir
    match line: shared-library="libpango-1.0.0.dylib"
    new line: shared-library="@executable_path/../Resources/lib/libpango-1.0.0.dylib"     typelib: /path/to/.myapp.app/Contents/Resources/lib/girepository-1.0/Pango-1.0.typelib

Checked the bundle file and I indeed have that <gir> block, but I also had the following line:

    <data>${prefix}/lib/girepository-1.0</data>

You know better, but my guess is that it replaced the fixed files with the originals again. Removing this line fixed the initial error. I'm not sure where I got this from. I might have taken different parts from different projects.

However another one pops up:

    objc[46154]: Class GNotificationCenterDelegate is implemented in both /Users/gtk3/gtk/inst/lib/libgio-2.0.0.dylib (0x10de41578) and /path/to/myapp.app/Contents/Resources/lib/libgio-2.0.0.dylib (0x10f23f578). One of the two will be used. Which one is undefined.
    Segmentation fault: 11

This is in the normal shell, not jhbuild shell. I'm not sure where it gets that local lib path from, there are no environment variables set to point there.

Timo
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