Unhappy [Q] make -j4 otatools not ending!

hey guys .... plwase help me... i have downloaded the cm 10.1 source and now i ant to build a cwm recovery. i have searched for an answer everywhere.. but could not get one. I am running ubuntu 14.04

i run in terminal:

cd /(my source dir)
make -j4 otatools

This has been goin on since 2 hours!!! When will it end!! please help!