[gdal-dev] self-compiled gdal linking to old already-remove proj libs

[Andreas Neumann]

Hi,

After my upgrade of Ubuntu 18.04 to 20.04 I am also renewing all my 
self-compiled "geo" libraries, such as proj, geos and gdal.

I removed old proj libs in /usr/local/lib then compiled and installed 
the  newest proj 7.0.1.

But now I am struggling with gdal - it always tries to link to old, 
already removed libproj versions. When I do

ldd /usr/local/lib/libgdal.so | grep proj

I get

         libproj.so.19 => /usr/local/lib/libproj.so.19 (0x00007fbaff612000)
         libproj.so.15 => /usr/lib/x86_64-linux-gnu/libproj.so.15 
(0x00007fbafd84e000)
         libproj.so.12 => not found

The libproj.so.12 was removed by me, libproj.so.19 and libproj.so.15 
probably came through some Ubuntu dependency.

How I can I tell the gdal configuration not to link to the already 
removed libproj.so.12 ? And maybe also ignore the libproj.so.15 version?

Thanks for any help!

Andreas