CMake and FindCUDA

[amwink]

I have a fairly recent version of CMake (4.X) and when I tried to build Dlib on a computer with a fairly old GPU (rtx2070) I got the message that CUDA was detected, but no FindCUDA module was present so cuBLAS etc could not be found.

It took some time and re-installations of everything NVidia has to offer before I realised that it's a message about CMake not CUDA. In recent versions of CMake, detection and testing scripts do not use the FindCUDA module.

My quick fix was to put an older version of FindCUDA in the CMake directory (and allowing to use that by setting an olde 'convention'), is that how other people do this as well?

[davisking]

Yeah we need to update some cmake stuff. Try out #3090 and see if it works for your platform.