CMake Errors: dnn and xfeatures2d modules

[rbfigueira]

I follow the steps and when I press configure the second time I get errors:

CMake Error at cmake/OpenCVUtils.cmake:1043 (file): file DOWNLOAD cannot open file for write. Call Stack (most recent call first): opencv_contrib-master/modules/dnn/cmake/OpenCVFindLibProtobuf.cmake:32 (ocv_download) opencv_contrib-master/modules/dnn/CMakeLists.txt:5 (include)

CMake Error at cmake/OpenCVUtils.cmake:1047 (message): Failed to download . Status= Call Stack (most recent call first): opencv_contrib-master/modules/dnn/cmake/OpenCVFindLibProtobuf.cmake:32 (ocv_download) opencv_contrib-master/modules/dnn/CMakeLists.txt:5 (include)

Configuring incomplete, errors occurred! See also "/Users/rbfigueira/Desktop/Crazyflie/opencv-3.2.0/build/CMakeFiles/CMakeOutput.log". See also "/Users/rbfigueira/Desktop/Crazyflie/opencv-3.2.0/build/CMakeFiles/CMakeError.log

CMake Error at cmake/OpenCVUtils.cmake:1043 (file):
file DOWNLOAD cannot open file for write.
Call Stack (most recent call first):
opencv_contrib-master/modules/xfeatures2d/cmake/download_boostdesc.cmake:22 (ocv_download)
opencv_contrib-master/modules/xfeatures2d/CMakeLists.txt:8 (download_boost_descriptors)

CMake Error at cmake/OpenCVUtils.cmake:1047 (message):
Failed to download . Status=
Call Stack (most recent call first):
opencv_contrib-master/modules/xfeatures2d/cmake/download_boostdesc.cmake:22 (ocv_download)
opencv_contrib-master/modules/xfeatures2d/CMakeLists.txt:8 (download_boost_descriptors)

[alalek]

#1100 (comment)

[zakaria-chahboun]

[alalek] This comment is not related to original issue

BTW, In mentioned answer it is better to point on this repository instead (with all necessary scripts):
https://github.com/opencv/opencv_3rdparty/tree/ffmpeg/master

---

This is a complete answer ❤️

https://stackoverflow.com/questions/44943015/how-do-i-compile-opencv-ffmpeg-dll-file-using-mingw-on-windows-10-64-bit/47833262#47833262