Include OpenCV libraries using Qmake

IntroductionOpenCV.pro

@@ -20,44 +20,7 @@ HEADERS  += mainwindow.h \
 FORMS    += mainwindow.ui \
     histogramwindow.ui
 
-## SET THE CORRECT PATH HEREAFTER ##
-
-#OpenCV header files location (if you followed the tutorial, the include folder should be in ../build_with_Qt/release/include and ../build_with_Qt/debug/include)
-INCLUDEPATH += /opencv/build_with_Qt/include \
-
-#two configuration: release and debug
-CONFIG(release, debug|release){
-    LIBS += -L/opencv/build_with_Qt/release/lib \
-    #if library name is lib[name].lib, you should write -l[name]
-    -lopencv_core243 \
-    -lopencv_highgui243 \
-    -lopencv_imgproc243 \
-    -lopencv_features2d243 \
-    -lopencv_calib3d243 \
-    -lopencv_contrib243 \
-    -lopencv_flann243 \
-    -lopencv_gpu243 \
-    -lopencv_legacy243 \
-    -lopencv_ml243 \
-    -lopencv_objdetect243 \
-    -lopencv_ts243 \
-    -lopencv_video243
-}
-
-CONFIG(debug, debug|release){
-    LIBS += -L/opencv/build_with_Qt/debug/lib \
-    #if library name is lib[name].lib, you should write -l[name]
-    -lopencv_core243d \
-    -lopencv_highgui243d \
-    -lopencv_imgproc243d \
-    -lopencv_features2d243d \
-    -lopencv_calib3d243d \
-    -lopencv_contrib243d \
-    -lopencv_flann243d \
-    -lopencv_gpu243d \
-    -lopencv_legacy243d \
-    -lopencv_ml243d \
-    -lopencv_objdetect243d \
-    -lopencv_ts243d \
-    -lopencv_video243d
+unix:{
+CONFIG += link_pkgconfig
+PKGCONFIG += opencv
 }