$  pkg-config opencv --cflags


-I/usr/local/include/opencv -I/usr/local/include

    $  pkg-config opencv --libs

pkg-config --cflags opencv
pkg-config --libs opencv

Alternatively you can write a simple program and print the following defs:

CV_MAJOR_VERSION
CV_MINOR_VERSION

$  pkg-config opencv --cflags


-I/usr/local/include/opencv -I/usr/local/include

    $  pkg-config opencv --libs

https://www.quora.com/How-do-I-check-if-OpenCV-is-installed-on-a-machine

Type in the following commands. If you get the same output, it means that opencv is installed correctly

    $  pkg-config opencv --cflags


-I/usr/local/include/opencv -I/usr/local/include

    $  pkg-config opencv --libs


/usr/local/lib/libopencv_calib3d.so /usr/local/lib/libopencv_contrib.so /usr/local/lib/libopencv_core.so /usr/local/lib/libopencv_features2d.so /usr/local/lib/libopencv_flann.so /usr/local/lib/libopencv_gpu.so /usr/local/lib/libopencv_highgui.so /usr/local/lib/libopencv_imgproc.so /usr/local/lib/libopencv_legacy.so /usr/local/lib/libopencv_ml.so /usr/local/lib/libopencv_nonfree.so /usr/local/lib/libopencv_objdetect.so /usr/local/lib/libopencv_photo.so /usr/local/lib/libopencv_stitching.so /usr/local/lib/libopencv_ts.so /usr/local/lib/libopencv_video.so /usr/local/lib/libopencv_videostab.so

Check version of OpenCV

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