Hi, just today I tried to compile "ktouch", a KDE and QT application. This failed with *link* errors (see below), which I find very curious. Let's look at the first error message: To my understanding.the package "kcmutils" should reference to *exactly* the version of Qt (or what ever), it was build for. So how can it be that some symbol is not found? I tried force-re-building qtbase and the effected packed (as listed below), but this did not solve the issue. /gnu/store/…-kcmutils-5.28.0/lib/libKF5KCMUtils.so.5.28.0: undefined reference to `qt_version_tag@Qt_5.7' /gnu/store/…-kxmlgui-5.28.0/lib/libKF5XmlGui.so.5.28.0: undefined reference to `QIODevice::isTransactionStarted() const@Qt_5' /gnu/store/…-kcmutils-5.28.0/lib/libKF5KCMUtils.so.5.28.0: undefined reference to `QIcon::fromTheme(QString const&)@Qt_5' /gnu/store/…-kpackage-5.28.1/lib/libKF5Package.so.5.28.0: undefined reference to `qt_QMetaEnum_flagDebugOperator(QDebug&, unsigned long, int)@Qt_5' /gnu/store/…-kwindowsystem-5.28.0/lib/libKF5WindowSystem.so.5.28.0: undefined reference to `QJsonValue::toString() const@Qt_5' /gnu/store/…-kxmlgui-5.28.0/lib/libKF5XmlGui.so.5.28.0: undefined reference to `QListWidget::setSelectionModel(QItemSelectionModel*)@Qt_5' /gnu/store/…-kxmlgui-5.28.0/lib/libKF5XmlGui.so.5.28.0: undefined reference to `QString::resize(int, QChar)@Qt_5' -- Regards Hartmut Goebel | Hartmut Goebel | h.goebel@crazy-compilers.com | | www.crazy-compilers.com | compilers which you thought are impossible |