Thanks for all this Brett. The patched version I built works but it will be nice to have the packaged version. I also contacted the developer and he is looking into it. He spun up Clear Linux in a VM for that purpose, although I think this limitation is going to be across all variants. He actually asked me how I got the header files for hamlib, so the dev version will be welcome.
I’ve tried gpredict and it works well - using rigctld to control the radio frequency for Doppler corrrection while another program uses it simultaneously for PTT. Everything is very snappy, although even Windows is pretty quick on the new hardware.
Still much work to do and plenty to learn.
Chris