pyobjc-dev

Re: [Pyobjc-dev] Build app under 10.5 XCode to run on earlier systems?

[Red <re...@pa...>]

Fairly newbie here, but I'm having a similar problem to what David saw  
last October:

David Eppstein wrote on 2008-10-05:
-------------------------------------------------------
 >If I have a PyObjC application built using XCode with the default
 >Python installation and default XCode templates under OS X version
 >10.5 (example: http://www.ics.uci.edu/~eppstein/LaTeX_Unicodifier.dmg.gz 
,
 >although I actually care about a more complex app I'm working on that
 >is not yet ready for public release), the built app does not include
 >any of the standard Python framework or libraries and will therefore
 >not run under earlier versions of the OS that did not come with PyObjC
 >preinstalled. Is there an easy way to convince XCode to make a more
 >universal application?


It seems that under 10.5, the compiled app wants to look for Python  
2.5.   I have verified this by launching the app on a 10.4 system and  
looking at the crashlog.  For the life of me, I cannot figure out how  
to get XCode to utilize the Python.Framework and not just the version  
2.5 Python.   Is there a way to force it to use whatever Python  
framework is installed?    (I'm not doing anything fancy....so I could  
even go back as far as Python 2.3 and this app should still run).

Anybody out there found a way to tweak the build settings?
Thanks!

Re: [Pyobjc-dev] Build app under 10.5 XCode to run on earlier systems?

[Greg E. <gre...@ca...>]

Red wrote:
> Is there a way to force it to use whatever Python framework is 
> installed?

Even if there were, it probably wouldn't be a good idea.
The ABI of the Python library can change from one version
of Python to another, so extensions are linked against a
particular version of it.

-- 
Greg

Re: [Pyobjc-dev] Build app under 10.5 XCode to run on earlier systems?

[Will L. <le...@gm...>]

I haven't personally done this, but it is possible to build against  
the 2.3 library and thus maintain backwards compatibility with system  
with 2.3 system Python.

Or at least this blog entry suggests it is: http://www.dashingfalcon.com/blog-entry/2008/02/16/backwards-compatible-pyobjc-development-leopard

-Will

On Feb 13, 2009, at 7:14 PM, Greg Ewing wrote:

> Red wrote:
>> Is there a way to force it to use whatever Python framework is
>> installed?
>
> Even if there were, it probably wouldn't be a good idea.
> The ABI of the Python library can change from one version
> of Python to another, so extensions are linked against a
> particular version of it.
>
> -- 
> Greg
>
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