You'll have to recompile PDAL after GDAL upgrade. Good luck, Māris. 2021-04-25 21:15 GMT+03:00, Rich Shepard <rshepard at appl-ecosys.com>: > The error is "libgdal.so.26, needed by /usr/lib64/libpdal_base.so, not > found". That's because Slackware upgraded gdal so libgdal.so.28 is > installed.