Hi Jan, I'm reasonably interested in D at the moment and I've been playing with Burton's DLI port - which is very good so far.  I think the effort to glue the DMD frontend to the GCC backend is better for linux D in the long run (machine portability + easy of sync with Walter's frontend) and I'd like to offer my megar skills if you'd like a hand.  I haven't written a compiler before, but I'm willing to learn.  I've started reading about the GCC backend, RTL trees, etc.  I also have your code compiling with gcc3.2.1
If you'd like a hand let me know & I'll see what I can do.
BTW - I can't seem to find what the DMD frontend generates, does it generate anything?  Did Walter provide any docs to help with backend efforts?  I couldn't find any - maybe it's obvious to experienced compiler writers :)

 I can follow the parse phases, but by the time module::genObjFile is called what data are we working with (ie, raw semantically correct tokens from original file, or some other structure?)

Cheers
Brad