Library/Formula/opencv.rb


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require 'formula'

class Opencv <Formula
  url 'http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.1/OpenCV-2.1.0.tar.bz2'
  homepage 'http://opencv.willowgarage.com/wiki/'
  md5 '1d71584fb4e04214c0085108f95e24c8'

  depends_on 'cmake'
  depends_on 'pkg-config'
  
  # Optional.
  depends_on 'libtiff'
  depends_on 'jasper'
  depends_on 'tbb'  

  # Very Optional? Pulls in lots of dependencies but maybe not needed unless you're doing video analysis
  # Video analysis requires a bunch more things which we don't have: libgstreamer, libxine, unicap, libdc1394 2.x (or libdc1394 1.x + libraw1394).
  # We can leave this disabled for now.
  # Maybe we could add a flag?
  #depends_on 'ffmpeg'
  
  # There are other optional dependencies but they don't currently exist in Homebrew.

  def install
    system "cmake -G 'Unix Makefiles' -DCMAKE_INSTALL_PREFIX:PATH=#{prefix} ."
    system "make"
    system "make install"
  end
  
    def caveats
      return <<-EOS
  The OpenCV Python module will not work until you edit your PYTHONPATH like so:
  
    export PYTHONPATH="#{HOMEBREW_PREFIX}/lib/python2.6/site-packages/:$PYTHONPATH"
  
  To make this permanent, put it in your shell's profile (e.g. ~/.profile).
    EOS
  end
end