# Enable CUDA after OpenCV build

**URL:** <https://forums.developer.nvidia.com/t/enable-cuda-after-opencv-build/280220>\
**Category:** CUDA Setup and Installation\
**Tags:** opencv\
**Created:** [January 25, 2024, 9:43pm UTC](https://forums.developer.nvidia.com/t/enable-cuda-after-opencv-build/280220 "2024-01-25T21:43:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Greasy\_D](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@Greasy\_D](https://forums.developer.nvidia.com/u/Greasy_D)\
**Post date:** [January 25, 2024, 9:43pm UTC](https://forums.developer.nvidia.com/t/enable-cuda-after-opencv-build/280220/1 "2024-01-25T21:43:23Z")

</div>

I built OpenCV successfully on my Jetson Nano, OpenCV 4.9 on Jetpack 4.6. However CUDA did not compile for OpenCV. I do have the CUDA 10.2 library on my Nano.  
Is it possible to compile CUDA for OpenCV without having to uninstall/reinstall OpenCV?