From 692f6f4fcf9bfddaf8779ba622f190c3a8c772f9 Mon Sep 17 00:00:00 2001
From: Robert Schumacher <roschuma@microsoft.com>
Date: Wed, 21 Feb 2018 17:20:22 -0800
Subject: [PATCH 3/5] disable-downloading

---
 cmake/OpenCVDownload.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/OpenCVDownload.cmake b/cmake/OpenCVDownload.cmake
index f660502..90785f1 100644
--- a/cmake/OpenCVDownload.cmake
+++ b/cmake/OpenCVDownload.cmake
@@ -151,6 +151,8 @@ 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    )")
     file(DOWNLOAD "${DL_URL}" "${CACHE_CANDIDATE}"
          INACTIVITY_TIMEOUT 60
          TIMEOUT 600
-- 
2.15.1.windows.2