did you run "./autogen.sh --enable-heavy --enable-opencl" and then "make"?
maybe you need to run "sudo ./autogen.sh --enable-heavy --enable-opencl" and "sudo make" instead, im not sure about that"
after that you need to go to the folder and run something like "cgminer --heavy --vote 512 -o stratum+tcp://hvcpool.1gh.com:5333 -u YOUR-WALLET_ADDRESS_HERE -p x"