CUDA: Perform nvcc-specific CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES detection only on nvcc
Clang doesn't provide for an easy way to do the same. As this variable is obsoleted by FindCUDAToolkit, it probably makes sense to keep it only for NVCC.
Clang doesn't provide for an easy way to do the same. As this variable is obsoleted by FindCUDAToolkit, it probably makes sense to keep it only for NVCC.