Personally I would use the Bitmain official AntS1 software you reference along with ckpool to solo mine. (what I do now)
If you clone cgminer master and cross compile for openwrt does your binary segmentation fault? I have to mickey mouse it to get it to run.
It would have been nice if libevent was used with ckpool instead of explicit epoll and a couple other things but then what fun would that bee?
8 )