early-access version 2853

externals/vcpkg/ports/opencv4/0001-disable-downloading.patch

@@ -0,0 +1,12 @@
+--- a/cmake/OpenCVDownload.cmake
++++ b/cmake/OpenCVDownload.cmake
+@@ -157,6 +157,9 @@ function(ocv_download)
+   # Download
+   if(NOT EXISTS "${CACHE_CANDIDATE}")
+     ocv_download_log("#cmake_download \"${CACHE_CANDIDATE}\" \"${DL_URL}\"")
++    string(REPLACE "${OPENCV_DOWNLOAD_PATH}/" "opencv-cache/" CACHE_SUBPATH "${CACHE_CANDIDATE}")
++    message(FATAL_ERROR "    Downloads are not permitted during configure. Please pre-download the file \"${CACHE_CANDIDATE}\":\n    \n    vcpkg_download_distfile(OCV_DOWNLOAD\n        URLS \"${DL_URL}\"\n        FILENAME \"${CACHE_SUBPATH}\"\n        SHA512 0\n    )")
++
+     foreach(try ${OPENCV_DOWNLOAD_TRIES_LIST})
+       ocv_download_log("#try ${try}")
+       file(DOWNLOAD "${DL_URL}" "${CACHE_CANDIDATE}"