FindCUDA ignores CUDA_USE_STATIC_CUDA_RUNTIME option
Hi! I have been trying to *disable* the use of the static cuda runtime library, because I would prefer it to be linked dynamically.
There is an option in FindCUDA.cmake, namely `CUDA_USE_STATIC_CUDA_RUNTIME` which is supposed to toggle dynamic/static linking of libcudart.
> CUDA_USE_STATIC_CUDA_RUNTIME (Default ON)
> -- When enabled the static version of the CUDA runtime library will be used
> in CUDA_LIBRARIES.
The default value for this option is ON. I have tried to set it to OFF by running cmake with
cmake .. -DCUDA_USE_STATIC_CUDA_RUNTIME=OFF
And I have also tried to set the variable after including FindCuda.cmake with `SET(CUDA_USE_STATIC_CUDA_RUNTIME OFF)`
However, this does not work. `grep CUDA_USE_STATIC_CUDA_RUNTIME CMakeCache.txt` always returns the following, no matter what I do:
CUDA_USE_STATIC_CUDA_RUNTIME:BOOL=ON
And sure enough, running `make` in advertently uses the static library.
I am using CMake 3.9 on Fedora 26 with CUDA 9.
issue