I created an eclipse project according to the instructions found in [here](http://docs.opencv.org/3.0-beta/doc/tutorials/introduction/linux_eclipse/linux_eclipse.html#linux-eclipse-usage), and everything worked fine for that example.
I then wanted to try another simple example of [converting an image to grayscale](http://www.bogotobogo.com/OpenCV/opencv_3_tutorial_load_convert_save_image.php), and received the following error message:
"undefined reference to symbol '_ZN2cv8cvtColorERKNS_11_InputArrayERKNS_12_OutputArrayEii'"
Anyone knows what the problem might be?
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