Why are there differences in the Linux version of OpenCV when it comes to packaging? 2.4.8 is a zip, 2.4.7 is a tar.gz, 2.4.4 is a tar.bz2. This makes it difficult to script the install unless you build a universal extractor. Why not just stay with one format?
http://sourceforge.net/projects/opencvlibrary/files/opencv-unix