example compilation error

edit savecancel

I assume the code used by you is this:

#include <stdio.h>
#include <opencv2/opencv.hpp>

using namespace cv;

int main( int argc, char** argv )
{
  Mat image;
  image = imread( argv[1], 1 );

  if( argc != 2 || !image.data )
    {
      printf( "No image data \n" );
      return -1;
    }

  namedWindow( "Display Image", CV_WINDOW_AUTOSIZE );
  imshow( "Display Image", image );

  waitKey(0);

  return 0;
}

And I compiled it successfully with this command:

g++ -ggdb `pkg-config --cflags opencv` -o `basename test.cpp .cpp` test.cpp `pkg-config --libs opencv`

If you want to go with the cmake compilation follow the steps

Open a terminal and type:

a)

sudo gedit /etc/ld.so.conf.d/opencv.conf

b)in that paste :

usr/local/lib

c)save and close and then open a terminal and type:

pkg-config --cflags opencv

Result:

-I/usr/local/include/opencv -I/usr/local/include

And then tpye:

pkg-config --libs opencv

Result:

/usr/local/lib/libopencv_calib3d.so /usr/local/lib/libopencv_contrib.so /usr/local/lib/libopencv_core.so /usr/local/lib/libopencv_features2d.so /usr/local/lib/libopencv_flann.so /usr/local/lib/libopencv_gpu.so /usr/local/lib/libopencv_highgui.so /usr/local/lib/libopencv_imgproc.so /usr/local/lib/libopencv_legacy.so /usr/local/lib/libopencv_ml.so /usr/local/lib/libopencv_nonfree.so /usr/local/lib/libopencv_objdetect.so /usr/local/lib/libopencv_photo.so /usr/local/lib/libopencv_stitching.so /usr/local/lib/libopencv_superres.so /usr/local/lib/libopencv_ts.so /usr/local/lib/libopencv_video.so /usr/local/lib/libopencv_videostab.so

Also try

In the CMakeLists.txt add this line too:

include_directories(${OpenCV_INCLUDE_DIR})

Then you can continue with the cmake tpye compilation

Hope this helps you :)

1)In the CMakeLists.txt add this line too:

include_directories(${OpenCV_INCLUDE_DIR})

One way of compiling:- 1)chmod +x FILENAME.cpp

2)

g++ -ggdb `pkg-config --cflags opencv` -o `basename FILENAME.cpp .cpp` FILENAME.cpp `pkg-config --libs opencv'

3)./FILENAME image.Ext

And now for the CV_WINDOW_AUTOSIZE error: include the hihgui.h(or highgui.hpp for c++),then cv.h

SAMPLE CODE:

#include <highgui.h>

int main( int argc,char** argv)
{
    IplImage* img = cvLoadImage(argv[1]);
    cvNamedWindow("example1" ,CV_WINDOW_AUTOSIZE);
    cvShowImage("example1",img);
    cvWaitKey(0);
    cvReleaseImage( &img);
    cvDestroyWindow("example1");
}

AGAIN if problem still persists,here's a way of installing opencv

LINK 1: http://abhishek4273.wordpress.com/2014/02/05/install-opencv/

LINK 2:http://answers.opencv.org/question/21275/make-errors-when-building-opencv-under-ubuntu/#27780

Hope this helps you :)