[Proj] [gdal-dev] gdalinfo error and subsequent segfault with proj-5.0.x

Markus Metz markus.metz.giswork at gmail.com
Sun Apr 15 16:05:42 EST 2018

On Sun, Apr 15, 2018 at 10:07 PM, Even Rouault <even.rouault at spatialys.com>
> > OK, I recompiled gdal-2.2.4 --with-static-proj4 and got
> >
> > ldd libgdal.so | grep proj
> >     libproj.so.13 => /usr/local/lib64/libproj.so.13 (0x00007fe2ff181000)
> >     libproj.so.12 => /lib64/libproj.so.12 (0x00007fe2f31c7000)
> > ???
> >
> > gdalinfo now runs fine and produces expected results.
> >
> > I'm still concerned about the output of ldd libgdal.so
> Yes that's not sane. That means that GDAL links to a library that links
to the
> system libproj (/lib64/libproj.so.12), whereas GDAL directly links to your
> custom libproj 5 build ( /usr/local/lib64/libproj.so.13) . That may crash
> well.
> As proj 5.0.1 is (I believe) ABI compatible with previous releases, one
> potential hack is to make
> sudo ln -s /usr/local/lib64/libproj.so.13 /usr/local/lib64/libproj.so.12
> and define LD_LIBRARY_PATH to point to /usr/local/lib64/
> A cleaner solution would be to identify the GDAL dependenci(es) that link
> /lib64/libproj.so.12 and rebuild them against the one in
> libproj.so.13

Not too many on my test system. So far, GDAL is working for me now with
PROJ-5.0.x. If I encounter any problems later on, I will heed your advice.

Thanks a lot for your help!

Markus M
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