anchor.diff:      "--${boolWt (jasper != null)}-jasper"
       "--without-graphviz"
       "--without-lua"
  -    "--${boolWt (ffmpeg_2 != null)}-libavformat"
  +    "--${boolWt (ffmpeg != null)}-libavformat"
       #"--${boolWt (v4l_lib != null)}-libv4l"
       "--without-libv4l"
       "--${boolWt (lcms2 != null)}-lcms"
  
positive.code:     babl
      cairo
      #exiv2
      ffmpeg_2
      gdk-pixbuf_unwrapped
      #gexiv2
      glib
  
negative.code: , babl
  , cairo
  , exiv2
  , ffmpeg
  , gdk-pixbuf_unwrapped
  , gexiv2
  , glib
  