System Information

OpenCV version: 4.7.0
Operating System / Platform: Windows 10
Compiler & compiler version: Visual Studio 2019

Detailed description

When using delayloading on Windows, the libraries using the /DELAYLOAD flag also need to link with delayimp.lib. I had to manually add this via CMAKE_SHARED_LINKER_FLAGS=delayimp.lib to get delayloading to compile.

Also, it would be nice if the python binary also applied the delay-loading to it's link stage as well. So we could import cv2 and not immediately load all of the CUDA binaries.

Steps to reproduce

Try compiling on Windows with
CUDA_ENABLE_DELAYLOAD=ON
BUILD_SHARED_LIBS=ON

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• I updated to the latest OpenCV version and the issue is still there
• There is reproducer code and related data files (videos, images, onnx, etc)