aqua - Include support for the Mac OS X Aqua (Carbon/Cocoa) GUI
debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
exif - Add support for reading EXIF headers from JPEG and TIFF images
share - Enable applet for quickly sharing data to a variety of sources
webengine - Enable dictionary and web browser applets using dev-qt/qtwebengine
