Run simple C++ OpenCV on Mac Terminal - c++

Question

I'm a complete beginner with cpp and opencv. I would like to compile and run this simple Program that lets me display an image. This works if I run the code inside XCode but if I try it using clang in the console it throws me a
linker command failed with exit code 1 (use -v to see invocation)
I had add these "linker flags" in Xcode to get opencv to run so I assume I need to somehow install them globally too. HHow would I achieve this?
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc, char** argv) {
if (argc != 2) {
cout << "Bitte zu ladendes Bild als Parameter angeben." << endl;
return -1;
}
Mat image;
image = imread(argv[1], CV_LOAD_IMAGE_COLOR);
if (!image.data) {
cout << "Bild " << argv[1] << " wurde nicht gefunden." << std::endl ;
return -1;
}
namedWindow("OpenCV Window", WINDOW_AUTOSIZE);
imshow("OpenCV Window", image);
cout << "Image width: " << image.cols << ", image height: " <<
image.rows << endl;
waitKey(0);
return 0;
}
These are the Linker Flags inside Xcode:
-lopencv_calib3d -lopencv_core -lopencv_features2d -lopencv_flann -lopencv_highgui -lopencv_imgcodecs -lopencv_imgproc -lopencv_ml -lopencv_objdetect -lopencv_photo -lopencv_shape -lopencv_stitching -lopencv_superres -lopencv_video -lopencv_videoio -lopencv_videostab