title: How to compile OpenCV with libjpeg-turbo?
body: <p>I am using OpenCV 2.3.1 on OS X Lion in one of my C++ projects. While my project works great as-is, it depends heavily on JPEG decoding and encoding. I would like to gain a speedup by using libjpeg-turbo, but I cannot find the correct way to link with libjpeg-turbo. Depending on my hackery attempts and which files I edit, I either end up with compiling errors or with a useless OpenCV library (everything compiles correctly, but I cannot open or write JPEG files, though no errors appear in the C++ project).</p>
  
  <p>Can anyone explain how you can compile OpenCV with libjpeg-turbo for faster JPEG decoding/encoding?</p>