dev-libs/libxml2:2
sys-libs/zlib

jpeg?
      ( media-libs/libjpeg-turbo:= )

opencv?
      ( media-libs/opencv:= )

png?
      ( media-libs/libpng:= )

python?
      ( python_single_target_python3_9?
            ( >=dev-lang/python-3.9.16-r1:3.9 )
       python_single_target_python3_10?
            ( >=dev-lang/python-3.10.9-r1:3.10 )
       python_single_target_python3_11?
            ( >=dev-lang/python-3.11.1-r1:3.11 )
       )

qt5?
      ( dev-qt/qtwidgets:5 )

tiff?
      ( media-libs/tiff:= )

truetype?
      ( media-libs/freetype:2 )