Bug： OpenCV3.1 error ,when I tring to compile c project #8658
Description
System information (version)
- OpenCV => 3.1
- Operating System / Platform => Ubuntu 16.04(PC) JestonTk1 JestonTX1
- Compiler => gcc
Detailed description
Question Projection: YOLO-Darknet https://pjreddie.com/darknet/install/
Error occurred when using cvRound function
Steps to reproduce
Just run make
obj/image.o：In Function ‘cvPointFrom32f’：
/usr/local/include/opencv2/core/types_c.h:929：undefined reference to ‘cvRound’
/usr/local/include/opencv2/core/types_c.h:930：undefined reference to ‘cvRound’
obj/image.o：In Function ‘cvReadInt’：
/usr/local/include/opencv2/core/core_c.h:2318：undefined reference to ‘cvRound’
obj/image.o：In Function ‘cvEllipseBox’：
/usr/local/include/opencv2/imgproc/imgproc_c.h:1041：undefined reference to ‘cvRound’
/usr/local/include/opencv2/imgproc/imgproc_c.h:1042：undefined reference to ‘cvRound’
obj/darknet.o:/usr/local/include/opencv2/core/types_c.h:929: more undefined reference to ‘cvRound’ follow
Solution
Modify the cvdef.h by adding the follow codes:
/*************************************************************************************\
* Test add fast_math.hpp by devin *
\*************************************************************************************/
#ifndef __cplusplus
#include "opencv2/core/fast_math.hpp"
#endif