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_10?
            ( dev-lang/python:3.10 )
       python_single_target_python3_11?
            ( dev-lang/python:3.11 )
       python_single_target_python3_12?
            ( dev-lang/python:3.12 )
       )

qt5?
      ( dev-qt/qtwidgets:5 )

tiff?
      ( media-libs/tiff:= )

truetype?
      ( media-libs/freetype:2 )