Hi, as a quite big difference to GNU Radio 3.7 the CMake does not set up your project to blindly link to all of the GNU Radio libraries but you have to also add in `lib/CMakelists.txt` a `target_link_library($my_oot_library gnuradio::gnuradio-filter)` to link to gr-filter symbols.
The inital selection of components in `find_package` just limits the list of imported CMake targets and thus the available components you can ultimatively link to. Cheers Andrej
pgpZz3qa6ILlg.pgp
Description: OpenPGP digital signature
