Would it make sense for libprussdrv to be a package in apt (and dynamically linked)? I'm working on getting my app (which uses the PRU) from 3.8 to 4.1. Googling other people's troubles, one of the steps seemed to be rebuilding libprussdrv*, which meant rebuilding my app (which I had just copied over from the other BBB) since it was statically linked.
I don't know what it takes to get something into apt or if it's appropriate for libprussdrv to be there, but it might be handy.
Thanks,