https://github.com/KhronosGroup/OpenCL-Headers/archive/49f07d313344ddb22701847ea5c18cb7db03b0d7/OpenCL-Headers-49f07d313344ddb22701847ea5c18cb7db03b0d7.tar.gz https://github.com/KhronosGroup/OpenCL-CLHPP/releases/download/v2.0.10/cl2.hpp https://www.khronos.org/registry/cl/api/2.1/cl.hpp