title: OpenCV 3.x only contains one lib - opencv_world.lib?
body: <p>I'm trying to update my OpenCV version from 2.4.9 to the newest version, 3.10. I downloaded the Windows binary from <a href="http://sourceforge.net/projects/opencvlibrary/files/opencv-win/3.1.0/">here</a>, having navigated there from the official OpenCV site. I then ran the installer, but the <code>opencv\build\x64\vc12\lib</code> directory only contained a couple files:</p>
  
  <ul>
  <li>opencv_world310.lib</li>
  <li>opencv_world310d.lib</li>
  <li>OpenCVConfig.cmake</li>
  <li>OpenCVModules.cmake</li>
  <li>OpenCVModules-debug.cmake</li>
  <li>OpenCVModules-release.cmake</li>
  </ul>
  
  <p>In the past editions though, this directory used to contain the required libraries, like opencv_calib3d249d.lib, opencv_contrib249d.lib, opencv_core249d.lib, etc.</p>
  
  <p>I imagine there's something I need to do with CMake, but I can't seem to figure it out--the old binaries used to compile everything for you. I also can't find anything in the documentation explaining this. Has anyone else come across this recently and have a solution?</p>