Hello Bruce.
I was using GNU Radio and GNU Radio Companion several years ago, with Softrocks, our Charleston SDR, and other early SDRs.? Then a few years later I tried to reuse my old GNU Radio designs, but they wouldn't work.? Same with some of the other older SDR software, such as SDR Shell.
I ran into two problems, which have led me to limiting my Linux exposure, after being an early adopter.? The first, with GNU Radio and GRC, was that "they" decided to deprecate many/most functions and function names.? So, I needed to rework everything I had done.? Nope....
The second was software and links to software libraries and functions kept being changed to other locations, breaking previously successful builds (such as DSP library locations).?
I got tired of "fixing" problems related to these changes, and reduced my Linux operations.? I used to like working with Linux, but the constant changes and "deprecations" killed that interest. I also dislike where Ubuntu went with their desktop.....
73, Terry, N4TLF (formally WB4JFI)