First, you should focus on getting the miners working period (says me compiling 3.8.4 on the raspberry pi
). Anyhow, there will be two executables you can launch, one of which is cgminer-nogpu. This contains the extra goodies needed for ASIC related mining. The other one is for GPU related mining, which doesn't seem to be what you are wanting.
As for mining with overlock... that is out of my area of knowledge.