Unable to build open cv 2.3.1 source code

Question

I installed open cv in my ubuntu 11.04. But whenever I try to run any code I get the following error:

OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) in cvNamedWindow, file /home/robik/Downloads/Java/OpenCV-2.3.1/modules/highgui/src/window.cpp, line 275 terminate called after throwing an instance of 'cv::Exception' what(): /home/robik/Downloads/Java/OpenCV-2.3.1/modules/highgui/src/window.cpp:275: error: (-2) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function cvNamedWindow

I already have libgtk2.0-dev and pkg-config in my OS. What should I do?

Answer 1

re configure and then re-run cmake. checkout this tutorial