qtdeclarative

USE флаги

• 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
• gles2-only - Use GLES 2.0 or later instead of full OpenGL
• jit - Enable just-in-time compilation for improved performance. May prevent use of some PaX memory protection features in Gentoo Hardened.
• localstorage - Build the LocalStorage import for QtQuick (requires QtSql)
• opengl - Enable OpenGL support
• sql - Enable QtSQL support
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• vulkan - Add support for 3D graphics and computing via the Vulkan cross-platform API
• widgets - Enable QtWidgets support