fix

Author: shimat

.github/workflows/windows.yml

@@ -57,10 +57,7 @@ jobs:
         id: opencv-cache
         uses: actions/cache/restore@v5
         with:
-          path: |
-            ${{ github.workspace }}/opencv_artifacts/include
-            ${{ github.workspace }}/opencv_artifacts/lib
-            ${{ github.workspace }}/opencv_artifacts/bin
+          path: ${{ github.workspace }}/opencv_artifacts
           key: opencv-${{ env.OPENCV_VERSION }}-windows-x64-${{ hashFiles('cmake/opencv_build_options.cmake') }}
 
       - name: Build OpenCV
@@ -86,10 +83,7 @@ jobs:
         if: steps.opencv-cache.outputs.cache-hit != 'true' && github.event_name == 'push' && github.ref == 'refs/heads/main'
         uses: actions/cache/save@v5
         with:
-          path: |
-            ${{ github.workspace }}/opencv_artifacts/include
-            ${{ github.workspace }}/opencv_artifacts/lib
-            ${{ github.workspace }}/opencv_artifacts/bin
+          path: ${{ github.workspace }}/opencv_artifacts
           key: opencv-${{ env.OPENCV_VERSION }}-windows-x64-${{ hashFiles('cmake/opencv_build_options.cmake') }}
 
       # Commented out: FFmpeg backend is included in opencv_videoio_ffmpeg DLLs

cmake/opencv_build_options.cmake

@@ -43,4 +43,7 @@ set(BUILD_opencv_wechat_qrcode             ON  CACHE BOOL "" FORCE)
 
 # Disable unused 3rd-party integrations
 set(WITH_GSTREAMER OFF CACHE BOOL "" FORCE)
-set(WITH_ADE       OFF CACHE BOOL "" FORCE)
+set(WITH_ADE       OFF CACHE BOOL "" FORCE)
+
+# Use a flat install layout (avoids x64/vc17/ subdirectories; libs go to staticlib/)
+set(OpenCV_INSTALL_BINARIES_PREFIX "" CACHE STRING "" FORCE)

src/OpenCvSharpExtern/CMakeLists.txt

@@ -16,6 +16,11 @@ if(APPLE)
 	find_package(Protobuf REQUIRED)
 endif()
 
+# On Windows, OpenCV is built as a static library; tell the Windows Pack config to look for static libs.
+if(WIN32)
+	set(OpenCV_STATIC ON)
+endif()
+
 find_package(OpenCV REQUIRED)
 
 # iconv support isn't automatic on some systems