qt@gentoo.org Gentoo Qt Project Add support for exceptions - like catching them inside the event loop (recommended by upstream) Enable dev-libs/glib eventloop support Enable the Qt3Support libraries for Qt4. Note that this does not mean you can compile pure Qt3 programs with Qt4. Enable native journald logging support https://bugreports.qt.io/ http://doc.qt.io/ Must only be used by packages that are known to use private parts of the Qt API.