Hello !
I come to you since I have building problems to put opencv and opencv-contrib in my android project ( i'am on windows 10). I followed the following tutorial and I have errors at the cmake stage. ( https://zami0xzami.wordpress.com/2016/03/17/building-opencv-for-android-from-source/ )
I've been through a lot of forums that have guided me to add options, here is exactly the procedure I do to get the error.
I press the Configure button, I select MinGW makefiles and when it's finished I press the Generate button. Then, I open a Mingw console ( I tried the latest version and version 5.3.0), I go to the folder where there are the build files and I type the following command:
mingw32-make -j4
And finally I have this error :
C:\Users\Marvyn\Documents\opencv build\opencv-3.4.5\modules\objdetect\src\detection_based_tracker.cpp:175:14: error: 'thread' in namespace 'std' does not name a type
std::thread second_workthread;
^~~~~~
C:\Users\Marvyn\Documents\opencv build\opencv-3.4.5\modules\objdetect\src\detection_based_tracker.cpp:176:14: error: 'mutex' in namespace 'std' does not name a type
std::mutex mtx;
^~~~~
C:\Users\Marvyn\Documents\opencv build\opencv-3.4.5\modules\objdetect\src\detection_based_tracker.cpp:177:14: error: 'condition_variable' in namespace 'std' does not name a type
std::condition_variable objectDetectorRun;
^~~~~~~~~~~~~~~~~~
C:\Users\Marvyn\Documents\opencv build\opencv-3.4.5\modules\objdetect\src\detection_based_tracker.cpp:178:14: error: 'condition_variable' in namespace 'std' does not name a type
std::condition_variable objectDetectorThreadStartStop;
^~~~~~~~~~~~~~~~~~
C:\Users\Marvyn\Documents\opencv build\opencv-3.4.5\modules\objdetect\src\detection_based_tracker.cpp: In member function 'void cv::DetectionBasedTracker::SeparateDetectionWork::setParameters(const cv::DetectionBasedTracker::Parameters&)':
C:\Users\Marvyn\Documents\opencv build\opencv-3.4.5\modules\objdetect\src\detection_based_tracker.cpp:143:30: error: 'mutex' is not a member of 'std'
std::unique_lock mtx_lock(mtx);