编译报错

/usr/bin/ld: cannot find -lopencv2: No such file or directory 

collect2: error: ld returned 1 exit status 

make[2]: *** [CMakeFiles/sampleYOLOV7.dir/build.make:97: sampleYOLOV7] Error 1 

make[1]: *** [CMakeFiles/Makefile2:85: CMakeFiles/sampleYOLOV7.dir/all] Error 2 

make: *** [Makefile:136: all] Error 2 

[ERROR] build failed, Please check your environment! 

这是什么问题，之前的报错是找不到opencv2/opencv.hpp，将文档中这个引用的头文件路径写全就没有报错，但是这样的头文件太多，所以在cmakelist文件中写入opencv的路径，然后make build，重新编译报错上述问题