At least the frequency selector works normally in the compiled version. In the Appimage version is seemed to have a step of 2 for each digit so i could only set odd numbers by going to the next lowest digit and counting up or down to the next zero!
The CubicSDR build instructions have this note:
Note: add -DUSE_HAMLIB=1 to cmake command line to include hamlib support.
I see that HAMLIB is a remote control API. Could this be used to control CubicSDR over a network?
BTW, while testing I came across a WFM signal at 7.350MHz. I wasn't expecting WFM on HF? The station was weak and although I am located in the midlands in the UK, the female voice spoke in French, so it could not be a local/regional FM station bleeding over as that would have been in English. The waterfall didn't look much wider than NFM, but switching to NFM lost it completely.