[gtk-osx-users] gtk-mac-bundler: Unable to load image-loading module ...

[John Ralls <jralls ceridwen fremont ca us>]

On Feb 12, 2013, at 1:29 PM, John Ralls <jralls ceridwen us> wrote:

> 
> On Feb 12, 2013, at 8:37 AM, Christophe <cch heonium com> wrote:
> 
>> Le Tuesday 29 Jan 2013 à 11:28:22 (-0800), John Ralls a écrit :
>>> 
>>> On Jan 29, 2013, at 10:02 AM, Christophe <cch heonium com> wrote:
>>> 
>>>> Le Tuesday 29 Jan 2013 à 08:49:39 (-0800), John Ralls a écrit :
>>>>> 
>>>>> On Jan 29, 2013, at 7:32 AM, Christophe <cch heonium com> wrote:
>>>>> 
>>>>>> Le Tuesday 29 Jan 2013 à 06:55:40 (-0800), John Ralls a écrit :
>>>>>>> 
>>>>>>> On Jan 29, 2013, at 4:53 AM, Christophe <cch heonium com> wrote:
>>>>>>> 
>>>>>>>> Hello,
>>>>>>>> 
>>>>>>>> I am new to gtk-mac-bundler, and it seems to have followed the
>>>>>>>> documentation to the letter but when I run the generated 
>>>>>>>> package i have the following error message:
>>>>>>>> 
>>>>>>>> CRITICAL:init:Unable to load image-loading module: @executable_path/../Resources/lib/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so: dlopen(@executable_path/../Resources/lib/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so,1): image not found
>>>>>>>> 
>>>>>>>> I specify the image file it tries to open is present in bunble. I
>>>>>>>> googling for several days but I have not found anything relevant.
>>>>>>>> Can you give a link or a track to solve this problem
>>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Assuming you've checked the bundle to ensure that libpixbufloader-png.so is in fact in that path, the usual cause of this problem is attempting to run an auxiliary program from Contents/Resources/bin instead of Contents/MacOS. @executable_path starts from the path of the binary that starts the linker-chain.
>>>>>>> 
>>>>>> Ok I understand, but I followed the sample: 'pygtk-demo' and I set the
>>>>>> entry 'launcher_script' which copied the script in the 'Contents/MacOS'.
>>>>>> This script calls the python script in the same directory which starts
>>>>>> the application that it is in 'Contents/Resources/bin'. The only 
>>>>>> difference is that in this sample the final script is in
>>>>>> 'Contents/Resources/lib/pygtk/2.0'.
>>>>>> You advise me to the Python application being in 'Contents/Resources/bin'
>>>>>> in 'Contents/MacOS'? In this case i need to modify a lot a things in the
>>>>>> application.
>>>>>> 
>>>>> 
>>>>> So this is python. That changes things a bit.
>>>>> The location of the python script doesn't matter, the executable (as far as the linker and dlopen are concerned) is the python interpreter, which is why it is in Contents/MacOS.
>>>>> 
>>>>> If you shell out to another program, though, (os.spawn, popen2, subprocess.call, etc.), that creates a new executable for linking and loading, and the easiest thing to do is to put any program that you need in Contents/MacOS as well.
>>>> 
>>>> I have put python interpreter and the python script in the bundle
>>>> (Contents/MacOS) but i have exactly the same error when i try to run it.
>>> 
>>> It appears that you *don't* understand. So long as you stay in the python script, python is the executable, the location of the script isn't important. That's they way pygtk-demo works -- and it does work, I just tested it. So either you've screwed something up in converting the example to your script or your script is calling another program which isn't in Contents/MacOS. 
>>> 
>>> You have to figure out which is the problem, I can't without reviewing your code, and I'm not interested in doing that.
>> 
>> Hello
>> 
>> I understand that you do not want to see my code and I do not ask you,
>> however i did a little test from 'pygtkdemo' and I'd like your opinion.
>> 
>> I add the following line to the file ~/gtk/inst/lib/pygtk/2.0/pygtk-demo.py ':
>> 
>> ...
>> import gdk
>> ...
>> Gtk.gdk.pixbuf_new_from_file ICON = ('/Users/gtkosx3/Desktop/PyGtkDemo.app/Contents/MacOS/icon.png')
>> ...
>> 
>> and the following lines in the file 'pygtk-demo.bundle':
>> 
>> ...
>> <!-- <binary Dest="${bundle}/Contents/MacOS">
>>   ${prefix}/bin/python
>> </binary> -->
>> <binary dest="${bundle}/Contents/MacOS">
>>   /usr/bin/python
>> </binary>
>> <binary dest="${bundle}/Contents/MacOS">
>>   /usr/bin/python2.7
>> </binary>
>> ....
>> <binary>
>>   ${prefix}/lib/gdk-pixbuf-2.0/${pkg:gdk-pixbuf-2.0:gdk_pixbuf_binary_version}/loaders/*. *
>> </ binary>
>> ...
>> 
>> I run the bundle generation and when I excute it I still have the same
>> error message. I do not see how I can know what is called external
>> library.
>> 
>> Thank you for your time and your answer. 
> 
> Please keep this on the list.
> 
> I don't think that putting the Apple-supplied python in the bundle is going to work. When I try that I get
> Fatal Python error: PyThreadState_Get: no current thread
> Desktop/PyGtkDemo.app/Contents/MacOS/PyGtkDemo: line 65: 26075 Abort trap: 6           $EXEC $PYTHON "$bundle_contents/MacOS/pygtk-demo"
> 
> But perhaps that's because PyGtk is built with ${prefix}/bin/python. It's much cleaner to do it that way as well.
> 
> So after fixing that and your mistakes in selecting the loaders and the syntax errors and all of that, it loads up just fine.

Sorry, I cc'd the original to the wrong list. Please reply to this one.

Regards,
John Ralls