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sudo apt-get install build-essential
sudo apt-get install cmake 
sudo apt-get install pkg-config 
sudo apt-get install libpng12-0 libpng12-dev libpng++-dev libpng3 
sudo apt-get install libpnglite-dev libpngwriter0-dev libpngwriter0c2 
sudo apt-get install zlib1g-dbg zlib1g zlib1g-dev 
sudo apt-get install pngtools libtiff4-dev libtiff4 libtiffxx0c2 libtiff-tools 
sudo apt-get install libjpeg8 libjpeg8-dev libjpeg8-dbg libjpeg-progs 
sudo apt-get install ffmpeg libavcodec-dev libavcodec52 libavformat52 libavformat-dev 
sudo apt-get install libgstreamer0.10-0-dbg libgstreamer0.10-0  libgstreamer0.10-dev 
sudo apt-get install libxine1-ffmpeg  libxine-dev libxine1-bin 
sudo apt-get install libunicap2 libunicap2-dev 
sudo apt-get install libdc1394-22-dev libdc1394-22 libdc1394-utils 
sudo apt-get install swig 
sudo apt-get install libv4l-0 libv4l-dev 
sudo apt-get install  python-numpy 
sudo apt-get install libpython2.6 python-dev python2.6-dev 
sudo apt-get install libgtk2.0-dev pkg-config

wget http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.2/OpenCV-2.4.2.tar.bz2

tar -xvzf OpenCV-2.4.2.tar.bz2
cd OpenCV-2.4.2
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_PYTHON_SUPPORT=ON -D BUILD_EXAMPLES=ON ..
make
sudo make install