New CuDNN release introduced new libraries and headers layout and excluded some functions. See initial discussion and found issues in #17238. The PR is closed a s abandoned.

Found changes:

• introduced cudnn_version.h header with version information
• libcudnn is split on several libraries
• cudnnGetConvolutionForwardAlgorithm function removed, but it's used in OpenCV:

  opencv/modules/dnn/src/cuda4dnn/csl/cudnn/convolution.hpp

  Lines 262 to 270 in 434014b

  	CUDA4DNN_CHECK_CUDNN(
  	cudnnGetConvolutionForwardAlgorithm(
  	handle.get(),
  	input.get(), filter.get(), conv.get(), output.get(),
  	CUDNN_CONVOLUTION_FWD_PREFER_FASTEST,
  	0, /* no memory limit */
  	&algo
  	)
  	);