2015-06-15 00:11:38 -0600 | asked a question | DetectionBasedTracker failed to build I want to build OpenCV 3.0.0 for MinGW to work with CodeBlocks I did all the steps mentioned here but in the build step I’m getting these errors after 98% of the build process. E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|945|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|946|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|947|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|948|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|949|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|950|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|951|error: ‘cv::DetectionBasedTracker’ has not been declared| E:\OpenCV\opencv\build2\modules\python2\pyopencv_generated_ns_reg.h|952|error: ‘cv::DetectionBasedTracker’ has not been declared| modules\python2\CMakeFiles\opencv_python2.dir\build.make|163|recipe for target ‘modules/python2/CMakeFiles/opencv_python2.dir/__/src2/cv2.cpp.obj’ failed| CMakeFiles\Makefile2|7117|recipe for target ‘modules/python2/CMakeFiles/opencv_python2.dir/all’ failed| E:\OpenCV\opencv\build2\Makefile|135|recipe for target ‘all’ failed| What should I do? Note: I’m building “opencv-3.0.0-rc1″. |