How to setup NVIDIA OpenCL

OS : Scientific Linux 6.4
GPU : Tesla K20

I have been install cuda5.5 by rpm that downloaded from NVIDIA web site, and have run CUDA programs successfully.
Now I wanna use NVIDIA OpenCL.

However I don’t understand how to do…

I have tried follow:
g++ main.cpp -lOpenCL
Result: “/usr/bin/ld: cannot find -lOpenCL”

I have not setup anything about OpenCL, so it’s obvious.
Where is the liblary and include files etc. ?

Would you teach me from the biginning.