I'm going step by step like this guide and my code does not compile. It has gotten some linker errors which I don't know how to fix. this is my terminal's answer to : pkg-config --libs opencv
/usr/lib/x86_64-linux-gnu$ pkg-config --libs opencv /usr/lib/x86_64-linux-gnu/libopencv_calib3d.so -lopencv_calib3d /usr/lib/x86_64-linux-gnu/libopencv_contrib.so -lopencv_contrib /usr/lib/x86_64-linux-gnu/libopencv_core.so -lopencv_core /usr/lib/x86_64-linux-gnu/libopencv_features2d.so -lopencv_features2d /usr/lib/x86_64-linux-gnu/libopencv_flann.so -lopencv_flann /usr/lib/x86_64-linux-gnu/libopencv_gpu.so -lopencv_gpu /usr/lib/x86_64-linux-gnu/libopencv_highgui.so -lopencv_highgui /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so -lopencv_imgproc /usr/lib/x86_64-linux-gnu/libopencv_legacy.so -lopencv_legacy /usr/lib/x86_64-linux-gnu/libopencv_ml.so -lopencv_ml /usr/lib/x86_64-linux-gnu/libopencv_objdetect.so -lopencv_objdetect /usr/lib/x86_64-linux-gnu/libopencv_ocl.so -lopencv_ocl /usr/lib/x86_64-linux-gnu/libopencv_photo.so -lopencv_photo /usr/lib/x86_64-linux-gnu/libopencv_stitching.so -lopencv_stitching /usr/lib/x86_64-linux-gnu/libopencv_superres.so -lopencv_superres /usr/lib/x86_64-linux-gnu/libopencv_ts.so -lopencv_ts /usr/lib/x86_64-linux-gnu/libopencv_video.so -lopencv_video /usr/lib/x86_64-linux-gnu/libopencv_videostab.so -lopencv_videostab
sorry if it's a mess to read but this is exactly how I received the answer.
This is how I've organized my linker 
this is the error I get:
Building target: Ball_Plate Invoking: GCC C++ Linker g++ -L/usr/lib/x86_64-linux-gnu -o"Ball_Plate" ./Src/src.o -lopencv_core\ opencv_imgproc\ opencv_highgui\ opencv_ml\ opencv_video\ opencv_features2d\ opencv_calib3d\ opencv_objdetect\ opencv_contrib\ opencv_legacy\ opencv_flann /usr/bin/ld: cannot find -lopencv_core opencv_imgproc opencv_highgui opencv_ml opencv_video opencv_features2d opencv_calib3d opencv_objdetect opencv_contrib opencv_legacy opencv_flann collect2: error: ld returned 1 exit status makefile:45: recipe for target 'Ball_Plate' failed make: *** [Ball_Plate] Error 1
I don't know how to fix this, I don't know much about how linker works around .so files and I would appreciate that if you could help me.
