depends -sub CXX gcc        &&
depends  pkgconfig  &&
depends  cmake      &&

if [[ $FFM = ffmpeg ]];then
  depends LIBAVCODEC
elif [[ $FFM = gstreamer ]]; then
  depends gstreamer-1.0 '-DWITH_GSTREAMER=1 -DWITH_FFMPEG=0'
elif [[ $FFM = libquicktime ]];then
  depends libquicktime
fi &&
depends  bzip2 &&
optional_depends v4l-utils     '-DWITH_V4L=1'    '-DWITH_V4L=0'    'V4L support' &&
optional_depends JPEG       '-DWITH_JPEG=1'   '-DWITH_JPEG=0'   'JPEG support' &&
optional_depends jasper     '-DWITH_JASPER=1' '-DWITH_JASPER=0' 'JPEG-2000 support' &&
optional_depends tiff       '-DWITH_TIFF=1'   '-DWITH_TIFF=1'   'TIFF support' &&
optional_depends libpng     '-DWITH_PNG=1'    '-DWITH_PNG=0'    'PNG support'
optional_depends python     ''  '' 'Python bindings'   &&
optional_depends numpy      ''  '' 'Numerical python support' &&
optional_depends tbb        '-DWITH_TBB=1'    '-DWITH_TBB=0'    'parallel processing support' &&
optional_depends xine-lib   '-DWITH_XINE=1'   '-DWITH_XINE=0'   'Xine support'   &&
optional_depends libucil    '-DWITH_UNICAP=1' '-DWITH_UNICAP=0' 'video capture support' &&
optional_depends libraw1394 '-DWITH_1394=1'   '-DWITH_1394=0'   'Firewire support'   &&
optional_depends gtk+2      '-DWITH_GTK=1'    '-DWITH_GTK=0'    'Gtk gui support'   &&
optional_depends qt4        '-DWITH_QT=1'     '-DWITH_QT=0'     'Qt gui support' &&
optional_depends EIGEN      '-DWITH_EIGEN=1'  '-DWITH_EIGEN=0'  'Eigen2/3 matrix support' 
optional_depends openexr    '-DWITH_OPENEXR=1' '-DWITH_OPENEXR=0' 'ILM support'