Why are you compiling chainminer? If all you're trying to do is change clock speeds, just edit /opt/bitfury/best.cnf and reboot. If that file doesn't exist yet, copy /run/shm/.stat.log to /opt/bitfury/best.cnf first.
1. How i copy /run/shm/.stat.log to /opt/bitfury/best.cnf ?
2. How i get /run/shm/.stat.log ?
1. cp /run/shm/.stat.log /opt/bitfury/best.cnf
2. If /run/shm/.stat.log doesn't exist, let the miner run for at least 5 minutes and it should be there.