.. _Linux-Installation: Installation in Linux *********************** These steps have been tested for Ubuntu 10.04 but should work with other distros. Required packages ================== * GCC 4.4.x or later. This can be installed with .. code-block:: bash sudo apt-get install build-essential * CMake 2.6 or higher * Subversion (SVN) client * GTK+2.x or higher, including headers (libgtk2.0-dev) * pkgconfig * Python 2.6 or later and Numpy 1.5 or later with developer packages (python-dev, python-numpy) * ffmpeg or libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev * [optional] libdc1394 2.x * [optional] libjpeg-dev, libpng-dev, libtiff-dev, libjasper-dev. All the libraries above can be installed via Terminal or by using Synaptic Manager Getting OpenCV source code ============================ You can use the latest stable OpenCV version available in *sourceforge* or you can grab the latest snapshot from the `SVN repository `_. Getting the latest stable OpenCV version ------------------------------------------ * Go to http://sourceforge.net/projects/opencvlibrary * Download the source tarball and unpack it Getting the cutting-edge OpenCV from SourceForge SVN repository ----------------------------------------------------------------- Launch SVN client and checkout either a. the current OpenCV snapshot from here: http://code.opencv.org/svn/opencv/trunk #. or the latest tested OpenCV snapshot from here: http://code.opencv.org/svn/opencv/tags/latest_tested_snapshot In Ubuntu it can be done using the following command, e.g.: .. code-block:: bash cd ~/ svn co http://code.opencv.org/svn/opencv/trunk Building OpenCV from source using CMake, using the command line ================================================================ #. Create a temporary directory, which we denote as , where you want to put the generated Makefiles, project files as well the object filees and output binaries #. Enter the and type .. code-block:: bash cmake [] For example .. code-block:: bash cd ~/opencv mkdir release cd release cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local .. #. Enter the created temporary directory () and proceed with: .. code-block:: bash make sudo make install .. note:: If the size of the created library is a critical issue (like in case of an Android build) you can use the ``install/strip`` command to get the smallest size as possible. The *stripped* version appears to be twice as small. However, we do not recommend using this unless those extra megabytes do really matter.