OK
I cloned the repository - no problems.
I installed qt and all the tools & libs listed - no problems
Then I got to the build stage and there's nothing in my src/leveldb/ folder to apply the attributes to and the next step (make) can't proceed. There's nothing at all in my src/leveldb/ folder.
I don't have time to be chasing digital fairies today. I might have to put this on the back burner.