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The first-class-language OpenCV CMake config (OpenCVConfig-CUDALanguage.cmake.in) pinned the consumer's CUDA Toolkit to the exact patch version OpenCV was built with (e.g. 12.3.107), via find_package(CUDAToolkit ... EXACT) and a full VERSION_EQUAL check. Patch versions change frequently while the CUDA runtime API is stable within a minor release, so this forced needless rebuilds and could FATAL_ERROR even for a matching toolkit. Per the core team's direction on #26966, the change lives in the installed config template rather than the build scripts, and is controlled by a consumer-set variable: - Default: match major.minor only (fixes the reported patch-pinning bug). - OPENCV_STRONG_CUDA_VERSION_CHECK: restore the exact full-version match. The build-time detection (OpenCVDetectCUDALanguage.cmake) is left untouched, so OpenCV_CUDA_VERSION still records the full version for diagnostics. Fixes #26965
OpenCV: Open Source Computer Vision Library
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