config

Hi,
I just got the Mac OS X public beta running on my home computer  and want to compile postgresql for it but don't know
whereto start.  I have installed Postgresql on linux boxes but they always just work because there are configs for
them.  Since v7.0.2 doesn't know about Mac OS X I'm assuming I need to get my hands dirty to make it compile.  Does
anyonehave any pointers on where to begin?   I don't know where to start. 

Out of the box when I run config, it says (which is  to be expected):

checking host system type... configure: error: can not guess host type; you must specify one


Thanks for any advice

Mike