I have this error after trying to install opencv on mac The Captain: Can anybody help me solving this error please.. [ 31%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_qtkit.mm.o /Users/.../opencv-2.4.13/modules/highgui/src/cap_qtkit.mm:46:9: fatal error: 'QTKit/QTKit.h' file not found

import <qtkit qtkit.h="">

    ^

1 error generated. make[2]: * [modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_qtkit.mm.o] Error 1 make[1]: * [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2 make: * [all] Error 2

Anybody can help me to fix it