Bug report #3507: built-in spatialindex conflicts with external libspatialindex - QGIS Application - QGIS Issue Tracking

Bug report #3507

built-in spatialindex conflicts with external libspatialindex

Added by rustychris - over 13 years ago. Updated over 8 years ago.

Status:	Closed
Priority:	Low
Assignee:	-
Category:	Python plugins
Affected QGIS version:	master	Regression?:	No
Operating System:	Debian	Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:	fixed/implemented
Crashes QGIS or corrupts data:	No	Copied to github as #:	13567

Description

libspatialindex is used by the python rtree module, but when this module is loaded from within a QGIS python plugin, the symbols from the builtin copy of spatialindex collide and render the python rtree module inoperable.

How to reproduce: install the rtree python module. Start QGIS and open a python console:

>>> import rtree
>>> p = rtree.index.Property()
>>> p.set_storage(0)
True
>>> p.get_storage()
1
>>>

Stepping through in gdb shows that libspatialindex.so:Tools::PropertySet::getProperty is shadowed by a function of the same name in libqgis_core.so.

History

#1 Updated by Volker Fröhlich over 13 years ago

By updating the SpatialIndex wrapper and amending CMakeLists and creating a Cmake script, I managed to build QGIS with a systemwide libspatialindex.

Wonder proposed to update the shipped copy of SpatialIndex and update the wrapper, so the user has the choice to use either lib.

Doing so, would help your problem, I suppose.

I can provide a patch, but I'm not a 100% sure, everything works correct or that my patch is sound, as I am no C++ programmer. Maybe we should do that after 1.7.