clutter

USE flags

• 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
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• egl - Enable EGL backend.
• gtk - Use gdk-pixbuf from x11-libs/gtk+ as image rendering backend
• introspection - Add support for GObject based introspection
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• wayland - Enable dev-libs/wayland backend
• X - Add support for X11