Hello,

I follow this tutorial how to install openCV. After installation I tried to run this two sampels, but I get the following errors:

include <highgui.h>

int main(int argc, char ** argv) {

IplImage* img = cvLoadImage(argv[1]);
cvNameWindow("Example1", CV_WINDOW_AUTOSIZE);
cvShowImage("Example1", img);
cvWaitKey(0);
cvReleaseImage(&img);
cvDestroyWindow("Example1");

return 0;

}

e1.cpp:1:21: fatal error: highgui.h: No such file or directory
 #include <highgui.h>
                     ^
compilation terminated.

include <stdio.h>

#include <opencv2/opencv.hpp>

using namespace cv;

int main(int argc, char** argv )
{
    if ( argc != 2 )
    {
        printf("usage: DisplayImage.out <Image_Path>\n");
        return -1;
    }

    Mat image;
    image = imread( argv[1], 1 );

    if ( !image.data )
    {
        printf("No image data \n");
        return -1;
    }
    namedWindow("Display Image", WINDOW_AUTOSIZE );
    imshow("Display Image", image);

    waitKey(0);

    return 0;
}

/tmp/ccVkJxtd.o: In function `main':
ex2.cpp:(.text+0x92): undefined reference to `cv::imread(std::string const&, int)'
ex2.cpp:(.text+0x12a): undefined reference to `cv::namedWindow(std::string const&, int)'
ex2.cpp:(.text+0x15b): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
ex2.cpp:(.text+0x19b): undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)'
ex2.cpp:(.text+0x1c3): undefined reference to `cv::waitKey(int)'
/tmp/ccVkJxtd.o: In function `cv::Mat::~Mat()':
ex2.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x39): undefined reference to `cv::fastFree(void*)'
/tmp/ccVkJxtd.o: In function `cv::Mat::operator=(cv::Mat const&)':
ex2.cpp:(.text._ZN2cv3MataSERKS0_[_ZN2cv3MataSERKS0_]+0x111): undefined reference to `cv::Mat::copySize(cv::Mat const&)'
/tmp/ccVkJxtd.o: In function `cv::Mat::release()':
ex2.cpp:(.text._ZN2cv3Mat7releaseEv[_ZN2cv3Mat7releaseEv]+0x47): undefined reference to `cv::Mat::deallocate()'
collect2: error: ld returned 1 exit status

What I did wrong?

Thanks.