@mdegans those OpenCV errors look similar to when I went to build PyTorch - there were some previously-deprecated functions removed from cuDNN 8.0. The OpenCV version might need updated (assuming they have patched master) if you want to build it with cuDNN support. What I did with PyTorch was to move to the latest release where they had updated their code to support cuDNN 8.0.
Note that the version of OpenCV that ships with JetPack should still be fine, I am assuming from above that a custom build of OpenCV is being referred to (e.g. with additional build options enabled). When you upgrade versions of JetPack that change the CUDA version, you typically need to also update packages that have dependencies on CUDA (e.g. PyTorch, TensorFlow, ect).