Win10 vs2017+cuda+opencv

When I compiled opencv with cmake, the following problems occurred

Could NOT find CUDNN (missing: CUDNN_LIBRARY CUDNN_INCLUDE_DIR) (Required is at least version “7.5”)

Hi,
Did you install cudnn?

Yes ,I did. I can configure successfully, but without the following file, am I wrong? Can I download files directly
The file are cudaarithm.hpp, cudaimgproc.hpp . cudafilters.hpp . cudafeatures2d.hpp . cudaobjdetect.hpp

I don’t understand :

That’s regular opencv file.
delete cmakecache.txt and rerun cmake and post full output

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