title: Ubuntu 14.04 LTS: How to install OpenCV highgui module
body: <p>I am trying to install the highgui module of opencv so that I can get a Qt Creator project to run properly.  However, continued searching of the internet has yielded absolutely nothing.</p>
  
  <p>The project was originally configured to run using version 2.3 of highgui, but returns the error that libopencv_highgui.so.2.3 is missing.  I've searched the Internet for ways to install this module properly, but I've learned that many of its dependencies are as outdated as version 2.3 of highgui, so installing it is rather difficult.
  I have managed to install the 2.4 version of highgui using sudo apt-get, but installing it this way does not create the any .so file.  What I seem to have difficulty getting is when/how/why are they created, and when/how/why aren't they created.   And if I can't get the exact right file, how do I make it so that Qt Creator looks for a different one that might actually exist?  For the second question, I assume I change libraries in the .pro file, but I haven't had much success.</p>