Hi, As far as I see the current cmake builds of proj4/proj6 includes the proj version number into the dll names like *proj_4_9.dll* for a Windows build.
However the GDAL build (like for https://github.com/OSGeo/gdal/blob/v2.4.4/gdal/ogr/ogrct.cpp) still using the default proj.dll name which cannot be configured in the opt file. It is true that if we set the PROJSO config option properly the problem disappears, something like: Gdal.SetConfigOption("PROJSO", "proj_4_9.dll"); But that could also be avoided if there was a compile time setting to specify the proj dll name. Does it make sense to establish a compile time option for this purpose? Thanks, Tamas
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