My guess is that you're trying to install the wrong thing. From the description here, it looks like it wants a Video4Linux interface to the ATI card, which would be provided by the km part of GATOS. It doesn't seem to claim that you need CVS, but that you can just download the source as usual.

Caveat: I have not even tried to install any of this software. This is just an educated guess as to the starting place.