qt@gentoo.org Gentoo Qt Project Use EGL instead of GLX to manage OpenGL contexts Add support for exceptions - like catching them inside the event loop (recommended by upstream) Use GLES 2.0 or later instead of full OpenGL Enable the Qt3Support libraries for Qt4 https://bugreports.qt.io/ https://doc.qt.io/ Must only be used by packages that are known to use private parts of the Qt API.