[Pythonmac-SIG] PyObjC ScreenSaver on 10.7

[Berg, Stuart]

One more note.  I came across this link yesterday:
http://developer.apple.com/library/mac/#qa/qa1666/_index.html

How do I make sure that the ScreenSaver bundle I've created with py2app uses the correct garbage collection setting?  Is there a way to specify GCC_ENABLE_OBJC_GC=required from setup.py?  Also, is there a way to inspect a binary to see if this setting was used to build it?

Sorry for my ignorance….

Thanks again,
Stuart

On Dec 26, 2012, at 12:08 PM, Stuart Berg wrote:

> Hi Ronald,
> 
>> The screensaver framework should work just fine, but only if the bundle contains 64-bit code.
>> 
>> What is the output of 'file SillyBalls.saver/Contents/MacOS/SillyBalls' ?
> 
> I have two versions of python, so I'll try this twice.  First with the built-in version:
> $ which python
> /usr/local/bin/python
> 
> $ python --version
> Python 2.7.2
> 
> $ python setup.py py2app
> ……..
> 
> $ file dist/SillyBalls.saver/Contents/MacOS/SillyBalls 
> dist/SillyBalls.saver/Contents/MacOS/SillyBalls: Mach-O universal binary with 2 architectures
> dist/SillyBalls.saver/Contents/MacOS/SillyBalls (for architecture i386):	Mach-O bundle i386
> dist/SillyBalls.saver/Contents/MacOS/SillyBalls (for architecture x86_64):	Mach-O 64-bit bundle x86_64
> 
> $ file dist/SillyBalls.saver/Contents/MacOS/python 
> dist/SillyBalls.saver/Contents/MacOS/python: Mach-O universal binary with 2 architectures
> dist/SillyBalls.saver/Contents/MacOS/python (for architecture i386):	Mach-O executable i386
> dist/SillyBalls.saver/Contents/MacOS/python (for architecture x86_64):	Mach-O 64-bit executable x86_64
> 
> And with my own build of python:
> 
> $ rm -rf build dist
> 
> $ which python
> /Users/bergs/special-build/Frameworks/Python.framework/Versions/2.7/bin/python
> 
> $ python --version
> Python 2.7.3rc2
> 
> $ python setup.py py2app
> …….
> 
> $ file dist/SillyBalls.saver/Contents/MacOS/SillyBalls 
> dist/SillyBalls.saver/Contents/MacOS/SillyBalls: Mach-O 64-bit bundle x86_64
> 
> $ file dist/SillyBalls.saver/Contents/MacOS/python 
> dist/SillyBalls.saver/Contents/MacOS/python: Mach-O 64-bit executable x86_64
> 
> 
>> Which versions of python, pyobjc, and py2app do you use (and for the python versions, is this the apple provided one or some other install)?
> 
> 
> I installed the same version of pyobjc to each python install:
> 
> $ python -c "import objc; print objc.__version__"
> 2.4
> 
> $ python -c "import py2app; print py2app.__version__"
> 0.7.2
> 
> The System Preferences app doesn't give a very useful error message ("Contact the developer of this screen saver for a newer version.").  Do you know if there's any way to get a better idea of what's going wrong?  As far as I can tell, Console.app doesn't have any useful output on this problem.
> 
> Thanks,
> Stuart
> 
> 
>