[Qgis-developer] QGIS Python support in a library

John C. Tull john.tull at wildnevada.org
Fri Jun 6 13:43:38 EDT 2008

Does this translate to something that can be modified in the base code  
to get proper functionality in a build of qgis without the need to  
hand edit files for the @loader_path stuff? I really would like to  
have python plugins that work in my builds, and greatly appreciate  
William's detective work and ability to make binaries that do provide  
full python functionality. Unfortunately, I do not understand what  
needs to be done on my end to get the same functionality. I would  
probably make the necessary changes to the @executable_path issues,  
but I am not clear on how to go about this.


On Jun 1, 2008, at 2:18 PM, William Kyngesburye wrote:

> OK, finally got a package built properly.  Python support IS  
> starting.  Maybe something changed in SVN since I last tried it  
> Saturday?  Or maybe my @loader_path change was the key?
> Qgis SVN r8575
> OSX 10.5.3, Xcode 3.1 beta
> System Python 2.5
> Qt 4.3.5/PyQt 4.3.3/SIP 4.7.4
> This is with my usual changing things to @loader_path where  
> appropriate, so the python .so's in Qgis relatively refer to the  
> Qgis libs and bundled Qt (instead of the default @executable_path,  
> which is unclear what the executable is).
> >>> sys.path
> ['/Applications/qgis0.11.0.app/Contents/MacOS/share/qgis/python', '/ 
> Users/kyngchaos/.qgis//python/plugins', '/Applications/ 
> qgis0.11.0.app/Contents/MacOS/share/qgis/python/plugins', '/Library/ 
> Python/2.5/site-packages/GDAL-1.5.2-py2.5-macosx-10.5-i386.egg', '/ 
> System/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
> python25.zip', '/System/Library/Frameworks/Python.framework/Versions/ 
> 2.5/lib/python2.5', '/System/Library/Frameworks/Python.framework/ 
> Versions/2.5/lib/python2.5/plat-darwin', '/System/Library/Frameworks/ 
> Python.framework/Versions/2.5/lib/python2.5/plat-mac', '/System/ 
> Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/plat- 
> mac/lib-scriptpackages', '/System/Library/Frameworks/ 
> Python.framework/Versions/2.5/Extras/lib/python', '/System/Library/ 
> Frameworks/Python.framework/Versions/2.5/lib/python2.5/lib-tk', '/ 
> System/Library/Frameworks/Python.framework/Versions/2.5/lib/ 
> python2.5/lib-dynload', '/Library/Python/2.5/site-packages', '/ 
> Library/Python/2.5/site-packages/PIL', '/Library/Python/2.5/site- 
> packages/geos', '/System/Library/Frameworks/Python.framework/ 
> Versions/2.5/Extras/lib/python/PyObjC']
> On May 31, 2008, at 12:10 PM, Tom Elwertowski wrote:
>> On May 30, 2008, at 11:27 PM, Tim Sutton wrote:
>>> I got the python stuff building and my mac post build scripts fix  
>>> up all the lib paths (see below) in the libqgispython.dylib, core  
>>> and gui python libs, but python stuff still wont load at  
>>> runtime...not sure what to do next.
>> The QLibrary statement at qgisapp.cpp:363 needs a full path (or at  
>> least something more than "qgispython"
>> QLibrary pythonlib("/Users/tce/developer/qgis/trunk/build/ 
>> qgis0.11.0.app/Contents/MacOS/lib/libqgispython.dylib");
>> works for me but SVN needs a somewhat more generic solution.
>> Tom
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> -----
> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
> http://www.kyngchaos.com/
> "Mon Dieu! but they are all alike.  Cheating, murdering, lying,  
> fighting, and all for things that the beasts of the jungle would not  
> deign to possess - money to purchase the effeminate pleasures of  
> weaklings.  And yet withal bound down by silly customs that make  
> them slaves to their unhappy lot while firm in the belief that they  
> be the lords of creation enjoying the only real pleasures of  
> existence....
> - the wisdom of Tarzan
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