[QGIS-trac] Re: [Quantum GIS] #1950: Python binary choice on OS X (10.6) / Building bug

[Quantum GIS]

#1950: Python binary choice on OS X (10.6) / Building bug
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        Reporter:  vince                                      |         Owner:  nobody             
            Type:  bug                                        |        Status:  new                
        Priority:  critical: causes crash or data corruption  |     Milestone:                     
       Component:  Build/Install                              |       Version:  1.3.0              
      Resolution:                                             |      Keywords:  spatialite.c python
Platform_version:  10.6 (Snow Leopard)                        |      Platform:  OS X               
        Must_fix:  No                                         |   Status_info:  0                  
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Comment (by kyngchaos):

 > First, the build fails in spatialite.c. It appears that OS X 10.6, or my
 configuration, does not like the call to "locale_charset ()", which
 results in an undefined symbol at link time. However, bypassing the #ifdef
 APPLE, thus doing the same as LINUX/UNIX, works fine.

 Works fine in the Xcode project build.  locale_charset() is a part of the
 iconv in OS X.  Maybe there are variations of libiconv (OSX uses GNU
 iconv) and you're using a different one than provided by Apple that uses
 the linux method?  In any case, this is really an issue with spatialite,
 and is not something that can be fixed in Qgis.

 > Next, I would like to know how to override PYTHON_LIBRARY; I've tried to
 force it with a suitable Cmake define, but it results as a mess, and I
 don't understand exactly with what I should set it (a path? a flag?). This
 relates to the next inquiry: how can I force Qgis to use a specific Python
 binary?

 Qgis detects Python from your PATH, so add your prefered python bin folder
 to the front of your PATH before configuring.  Also, Qgis uses an internal
 python interpreter and links directly to the python framework, so it
 happens at linking and you can't change it at runtime.

 > Otherwise, I don't get the Grass plugin, but maybe it's because I lack
 gdal-grass.

 Qgis uses the GRASS libraries directly, not thru GDAL.  Maybe it's not
 autodetecting GRASS?  On OSX, cmake defaults to looking for an application
 build of GRASS in a default install path, so if you have a Unix build or
 have customized the install location, you must specify the
 GRASS_INCLUDE_DIR and GRASS_PREFIX when configuring Qgis.

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Ticket URL: <http://trac.osgeo.org/qgis/ticket/1950#comment:1>
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