diff -Nuarp opencv-2.4.13.7.orig/include/opencv2/opencv.hpp opencv-2.4.13.7/include/opencv2/opencv.hpp
--- opencv-2.4.13.7.orig/include/opencv2/opencv.hpp	2021-03-12 10:34:37.813906930 +0800
+++ opencv-2.4.13.7/include/opencv2/opencv.hpp	2018-07-02 05:41:56.000000000 +0800
@@ -73,7 +73,6 @@
 #include "opencv2/ml/ml.hpp"
 #endif
 #ifdef HAVE_OPENCV_HIGHGUI
-#include "opencv2/highgui/highgui_c.h"
 #include "opencv2/highgui/highgui.hpp"
 #endif
 #ifdef HAVE_OPENCV_CONTRIB