error in make qtdeclarative module

  • I get qtdeclarative module with

    git clone git:// -b 5.6

    when I make it ,I get error from qquickinput.cpp that cannot find

    #include <QtGui/private/qinputcontrol_p.h>

    I add qinputcontrol_p.h in QtGui/private :

    //  W A R N I N G
    //  -------------
    // This file is not part of the Qt API. It exists purely as an
    // implementation detail. This header file may change from version to
    // version without notice, or even be removed.
    // We mean it.
    #include <QtCore/qobject.h>
    #include <QtGui/qtguiglobal.h>
    #include <QtGui/qevent.h>
    class QKeyEvent;
    class Q_GUI_EXPORT QInputControl : public QObject
        enum Type {
        explicit QInputControl(Type type, QObject *parent = nullptr) : QObject(parent)
        , m_type(type)
    virtual ~GetResponse(){};
        bool isAcceptableInput(const QKeyEvent *event) const{
        const QString text = event->text();
        if (text.isEmpty())
            return false;
        const QChar c =;
        // Formatting characters such as ZWNJ, ZWJ, RLM, etc. This needs to go before the
        // next test, since CTRL+SHIFT is sometimes used to input it on Windows.
        if (c.category() == QChar::Other_Format)
            return true;
        // QTBUG-35734: ignore Ctrl/Ctrl+Shift; accept only AltGr (Alt+Ctrl) on German keyboards
        if (event->modifiers() == Qt::ControlModifier
                || event->modifiers() == (Qt::ShiftModifier | Qt::ControlModifier)) {
            return false;
        if (c.isPrint())
            return true;
        if (c.category() == QChar::Other_PrivateUse)
            return true;
        if (m_type == TextEdit && c == QLatin1Char('\t'))
            return true;
        return false;
        static bool isCommonTextEditShortcut(const QKeyEvent *ke){
        if (ke->modifiers() == Qt::NoModifier
            || ke->modifiers() == Qt::ShiftModifier
            || ke->modifiers() == Qt::KeypadModifier) {
            if (ke->key() < Qt::Key_Escape) {
                return true;
            } else {
                switch (ke->key()) {
                    case Qt::Key_Return:
                    case Qt::Key_Enter:
                    case Qt::Key_Delete:
                    case Qt::Key_Home:
                    case Qt::Key_End:
                    case Qt::Key_Backspace:
                    case Qt::Key_Left:
                    case Qt::Key_Right:
                    case Qt::Key_Up:
                    case Qt::Key_Down:
                    case Qt::Key_Tab:
                    return true;
    //#if QT_CONFIG(shortcut)
        } else if (ke->matches(QKeySequence::Copy)
                   || ke->matches(QKeySequence::Paste)
                   || ke->matches(QKeySequence::Cut)
                   || ke->matches(QKeySequence::Redo)
                   || ke->matches(QKeySequence::Undo)
                   || ke->matches(QKeySequence::MoveToNextWord)
                   || ke->matches(QKeySequence::MoveToPreviousWord)
                   || ke->matches(QKeySequence::MoveToStartOfDocument)
                   || ke->matches(QKeySequence::MoveToEndOfDocument)
                   || ke->matches(QKeySequence::SelectNextWord)
                   || ke->matches(QKeySequence::SelectPreviousWord)
                   || ke->matches(QKeySequence::SelectStartOfLine)
                   || ke->matches(QKeySequence::SelectEndOfLine)
                   || ke->matches(QKeySequence::SelectStartOfBlock)
                   || ke->matches(QKeySequence::SelectEndOfBlock)
                   || ke->matches(QKeySequence::SelectStartOfDocument)
                   || ke->matches(QKeySequence::SelectEndOfDocument)
                   || ke->matches(QKeySequence::SelectAll)
                  ) {
            return true;
        return false;
        explicit QInputControl(Type type, QObjectPrivate &dd, QObject *parent = nullptr);
        const Type m_type;
    #endif // QINPUTCONTROL_P_H

    Now I get this error below, how can I fix this?

    .obj/qquicktextinput.o:qquicktextinput.cpp:function QQuickTextInputPrivate::init(): error: undefined reference to 'QInputControl::QInputControl(QInputControl::Type, QObject*)'
    .obj/qquicktextinput.o:qquicktextinput.cpp:function QQuickTextInputPrivate::processKeyEvent(QKeyEvent*): error: undefined reference to 'QInputControl::isAcceptableInput(QKeyEvent const*) const'
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:function QQuickTextControl::~QQuickTextControl(): error: undefined reference to 'vtable for QInputControl'
    /root/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/../lib/gcc/arm-linux-gnueabihf/4.8.3/../../../../arm-linux-gnueabihf/bin/ the vtable symbol may be undefined because the class is missing its key function
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:function QQuickTextControl::~QQuickTextControl(): error: undefined reference to 'vtable for QInputControl'
    /root/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/../lib/gcc/arm-linux-gnueabihf/4.8.3/../../../../arm-linux-gnueabihf/bin/ the vtable symbol may be undefined because the class is missing its key function
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:function QQuickTextControl::qt_metacast(char const*): error: undefined reference to 'QInputControl::qt_metacast(char const*)'
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:function QQuickTextControl::QQuickTextControl(QTextDocument*, QObject*): error: undefined reference to 'QInputControl::QInputControl(QInputControl::Type, QObjectPrivate&, QObject*)'
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:function QQuickTextControlPrivate::keyPressEvent(QKeyEvent*): error: undefined reference to 'QInputControl::isAcceptableInput(QKeyEvent const*) const'
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:function QQuickTextControl::qt_metacall(QMetaObject::Call, int, void**): error: undefined reference to 'QInputControl::qt_metacall(QMetaObject::Call, int, void**)'
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:QQuickTextControl::staticMetaObject: error: undefined reference to 'QInputControl::staticMetaObject'
    .obj/qquicktextcontrol.o:qquicktextcontrol.cpp:typeinfo for QQuickTextControl: error: undefined reference to 'typeinfo for QInputControl'
    collect2: error: ld returned 1 exit status
    make[2]: *** [../../lib/] Error 1
    make[2]: Leaving directory `/home/zp/qtdeclarative/src/quick'
    make[1]: *** [sub-quick-make_first-ordered] Error 2
    make[1]: Leaving directory `/home/zp/qtdeclarative/src'
    make: *** [sub-src-make_first] Error 2

  • Qt Champions 2017

    Hi @isan,

    • On which platform are you?
    • Against which Qt version do you want to compile qtdeclarative?
    • How did you obtain Qt, as binary or did you compile yourself?

  • I compile QT 5.6 form this link on linux 14.04
    Desktop QT 5.5.1 GCC 32bit

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