And I got it running. I just wanted to post that in the forum but I was logged out and my text was lost Everytime this happens in a forum I remind myself to work in an editor and copy into the forum, but I always forget.
So...
My almost working line was
myApps KeyBuddy2 MINGW C:\test
It compiled each c++ file from the upp library and returned with an error that it could not find some .a file I think.
I just tried again and it worked.
However, there is no "test" folder in C:...
Also it would be cool to have some more documentation and examples on this, DAU-compatible