Can't run OpenCV example in OSX Yosemite (Macbook 8,1)

Question

I want to run OpenCV (opencv-3.0.0-beta) on OSX Yosemite with a Macbook Pro 8,1 and XCode. But I get some issues.

Code I Used:

#include <iostream>
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/core/core.hpp"

using namespace cv;

int main(){

VideoCapture cap(0);

while (true){

    Mat Webcam;
    cap.read(Webcam);
    imshow("Webcam", Webcam);

    }

}

I get four issues..

Undefined symbols for architecture x86_64:
  "cv::VideoCapture::read(cv::_OutputArray const&)", referenced from:
      _main in main.o
  "cv::VideoCapture::VideoCapture(int)", referenced from:
      _main in main.o
  "cv::VideoCapture::~VideoCapture()", referenced from:
      _main in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

The Settings for Search Paths are:

• Always Search User Paths = Yes
• Framework Search Paths = /usr/local/lib
• Header Search Paths = /usr/local/include
• Library Search Paths = "MyOpenCV-Folder"/build/lib

**Can anybody help?

And please tell me if you need some more information. You'll get them :p

Thanks!**

Answer 1

Converting my comment in an answer:

You probably forgot to actually link against the OpenCV libraries. The libraries need to be explicitly specified, this link shows how you need to do it in Xcode.