FWIW, the Python bindings generated by the old version of SWIG you were using has a compatibility problem with ArcGIS 9.3.x; the problem is fixed by 1.3.9 (possibly one of the builds in between, but I don't know which).
A new feature of ArcGIS 9.3.x is to allow Python-based geoprocessing tools to run in the ArcGIS process itself. Previously, ArcGIS created a python.exe process to run them; now, it creates a Python sub-interpreter in its own process (ArcMap.exe or ArcCatalog.exe). The Python extension modules generated by the old version of SWIG had some Python type comparison code that did not work properly in this scenario. It worked fine for the first sub-interpreter that ArcGIS instantiated. But in the second and subsequent ones, the type comparison code failed; it tried to compare types of PyObjects allocated in the new sub-interpreter to types allocated in the old one. These types were maintained as C module statics, or something like that. As a result, many OGR functions would fail in the second and subsequent sub-interpreters, making OGR unfit for use in Python-based ArcGIS geoprocessing tools. Sorry for the long story there. In sum, as a user who wants to use GDAL and OGR from Python code invoked by ArcGIS, I am very happy you are moving to SWIG 1.3.39. Best regards, Jason -----Original Message----- From: gdal-dev-boun...@lists.osgeo.org [mailto:gdal-dev-boun...@lists.osgeo.org] On Behalf Of Howard Butler Sent: Sunday, December 06, 2009 11:43 AM To: Frank Warmerdam Cc: gdal-dev Subject: Re: [gdal-dev] SWIG Version On Dec 6, 2009, at 10:40 AM, Frank Warmerdam wrote: > > Is SWIG 1.3.39 acceptable for all bindings maintainers? 1.3.39 as our default moving forward would be fine for the Python bindings. IIRC, 1.3.40 isn't a good release (for some reason, swig releases are like wine vintages). Howard_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
