opencv error during make

[dmoham1476]

I see this error when I run make - I installed openCV using apt-get install libopencv-dev, cmake had no errors but make is failing

Scanning dependencies of target myplugins
[ 40%] Linking CXX shared library libmyplugins.so
[ 40%] Built target myplugins
Scanning dependencies of target yolov5
[ 60%] Building CXX object CMakeFiles/yolov5.dir/calibrator.cpp.o
/opt/nvidia/deepstream/tensorrtx/yolov5/calibrator.cpp:4:10: fatal error: opencv2/dnn/dnn.hpp: No such file or directory
#include <opencv2/dnn/dnn.hpp>
^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
CMakeFiles/yolov5.dir/build.make:62: recipe for target 'CMakeFiles/yolov5.dir/calibrator.cpp.o' failed
make[2]: *** [CMakeFiles/yolov5.dir/calibrator.cpp.o] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/yolov5.dir/all' failed
make[1]: *** [CMakeFiles/yolov5.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

[0xBYTESHIFT]

Same here

[EmberaThomas]

same here. Did u solve?

[CzakuGim]

same