Adding new platform to build hierarchy

Hello!

I've created a new platform package "rawppc" (based on ofppc) for
piggybacker and it's printing nice debug messages while loading the
kernel. Now I'm going to do the same with a) kdb and b) the kernel. My
question is however:

How do I introduce new platforms into the build structure so I can
select them with "make menuconfig"? Which files to I need to change?

Yes, it's a newbie question, but you don't need to explain Makefiles, I
just don't understand these autoconf/automake things. ;-)

Thanks,

Martin.