OpenCV : undefined reference to imread()

Question

I have configured OpenCV 3.1.0 in Eclipse Mars. These are my configuration,

G++ includes: D:/opencv/build/install/include; GCC includes

Answer 1

This function is located in opencv_imgcodecs library. It also worths mentioning that you may need to put your object file before libraries in order to link successfully:

g++ -c -I/usr/include/opencv4/opencv -I/usr/include/opencv4 main.cpp
g++ main.o -lopencv_imgcodecs $(OTHER_FLAGS) -o main