This needs more instructions when pulling from the upstream repository. Which repository for Piglit should be used? The ccmake does now need an OpenCL installed first. Maybe that should be patched?

 CMake Error at /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:91 (MESSAGE):
   Could NOT find OpenCL (missing: OPENCL_INCLUDE_PATH)
 Call Stack (most recent call first):
   /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:252 (_FPHSA_FAILURE_MESSAGE)
   cmake/Modules/FindOpenCL.cmake:42 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
   CMakeLists.txt:78 (find_package)