[darwinbuild] Using darwinbuild for development

Hello all, a few days ago I decided to give the kernel a kick. As there are so many good comments about darwinbuild, I set up this to build the thing. Now, it seems a lot like the kernel is built from scratch each time I issue darwinbuild, regardless of how much code I change. Even two "darwinbuild xnu" in a row do two full rebuilds each time. In comparison, building xnu outside darwinbuild makes builds after a small code change almost a snap (5 min vs. 40 min). Is there something I could do about this? Thanks, Markus - - - - - - - - - - - - - - - - - - - Dipl. Ing. Markus Hitter http://www.jump-ing.de/