Default [Q] 4.1.2 SlimBean prebuilts?

Hi guys,
I'm trying to port SlimBean3.1 I know its old but I need to start somewhere! I have a CM10 build up and running nicely, but can get Slim to complete a build. I keep getting:
*** No rule to make target `device/htc/primou/prebuilt/bin/compache'
Which suggests to me that I need to do the prebuilt command that you would do in a CM build, but..... there us no prebuilt.sh script.
Any help would be much appreciated, the more learning the better, as I plan to move up to 4.2.2 next
regards
Samsung i9300