They cause make to run much slower, and qmake writes everything explicitly, so they're not really needed. Change-Id: Ia47674eec8309e120c8264b7b6687677a520d5b9 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>