gistfile1.txt

//
//  main.cpp
//  homography
//
//  Created by Gaston on 1/17/13.
//
//

#ifndef HOMO
#define HOMO

#include <iostream>
#import <opencv2/opencv.hpp>

using namespace cv;

int main (int argc, const char * argv[])
{
    IplImage *img = cvCreateImage(cvSize(200, 100), IPL_DEPTH_8U, 3);
    
    cvLine(img, cvPoint(10, 10), cvPoint(150, 80), cvScalar(0,255,0,0), 1, 8, 0);
    
    cvNamedWindow("img", CV_WINDOW_AUTOSIZE);
    cvShowImage("img", img);
    
}
#endif


//ERROR


Ld build/Debug/homography normal i386
    cd /Users/Gaston/dev/RDC/xcode
    setenv MACOSX_DEPLOYMENT_TARGET 10.8
    /Applications/Xcode.app/Contents/Developer/usr/bin/llvm-g++-4.2 -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -L/Users/Gaston/dev/RDC/xcode/build/Debug -F/Users/Gaston/dev/RDC/xcode/build/Debug -filelist /Users/Gaston/dev/RDC/xcode/build/RDC.build/Debug/homography.build/Objects-normal/i386/homography.LinkFileList -mmacosx-version-min=10.8 -stdlib=libc++ -o /Users/Gaston/dev/RDC/xcode/build/Debug/homography

Undefined symbols for architecture i386:
  "_cvCreateImage", referenced from:
      _main in main.o
  "_cvLine", referenced from:
      _main in main.o
  "_cvNamedWindow", referenced from:
      _main in main.o
  "_cvShowImage", referenced from:
      _main in main.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status