Qt Linking errors
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While building a sample application using Qt 4.4.3 along with Microsoft VisualC++ 6 , we are facing the following errors during the linking phase.
Compiling...
main.cpp
Linking...
main.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall QApplication::~QApplication(void)" (??1QApplication@@UAE@XZ)
main.obj : error LNK2001: unresolved external symbol "public: static int __cdecl QApplication::exec(void)" (?exec@QApplication@@SAHXZ)
main.obj : error LNK2001: unresolved external symbol "public: thiscall QApplication::QApplication(int &,char * *,int)" (??0QApplication@@QAE@AAHPAPADH@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual int thiscall QWidget::metric(enum QPaintDevice::PaintDeviceMetric)const " (?metric@QWidget@@MBEHW4PaintDeviceMetric@QPaintDevice@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual void thiscall QWidget::releaseDC(struct HDC *)const " (?releaseDC@QWidget@@UBEXPAUHDC@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual struct HDC * thiscall QWidget::getDC(void)const " (?getDC@QWidget@@UBEPAUHDC@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual class QPaintEngine * __thiscall QWidget::paintEngine(void)const " (?paintEngine@QWidget@@UBEPAVQPaintEngine@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall QWidget::devType(void)const " (?devType@QWidget@@UBEHXZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual class QMenu * __thiscall QMainWindow::createPopupMenu(void)" (?createPopupMenu@QMainWindow@@UAEPAVQMenu@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::languageChange(void)" (?languageChange@QWidget@@MAEXXZ)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::windowActivationChange(bool)" (?windowActivationChange@QWidget@@MAEX_N@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::fontChange(class QFont const &)" (?fontChange@QWidget@@MAEXABVQFont@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::paletteChange(class QPalette const &)" (?paletteChange@QWidget@@MAEXABVQPalette@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::enabledChange(bool)" (?enabledChange@QWidget@@MAEX_N@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::styleChange(class QStyle &)" (?styleChange@QWidget@@MAEXAAVQStyle@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual bool __thiscall QWidget::focusNextPrevChild(bool)" (?focusNextPrevChild@QWidget@@MAE_N_N@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual class QVariant __thiscall QWidget::inputMethodQuery(enum Qt::InputMethodQuery)const " (?inputMethodQuery@QWidget@@UBE?AVQVariant@@W4InputMethodQuery@Qt@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::inputMethodEvent(class QInputMethodEvent *)" (?inputMethodEvent@QWidget@@MAEXPAVQInputMethodEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::changeEvent(class QEvent *)" (?changeEvent@QWidget@@MAEXPAVQEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual bool __thiscall QWidget::winEvent(struct tagMSG *,long *)" (?winEvent@QWidget@@MAE_NPAUtagMSG@@PAJ@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::hideEvent(class QHideEvent *)" (?hideEvent@QWidget@@MAEXPAVQHideEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::showEvent(class QShowEvent *)" (?showEvent@QWidget@@MAEXPAVQShowEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::dropEvent(class QDropEvent *)" (?dropEvent@QWidget@@MAEXPAVQDropEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::dragLeaveEvent(class QDragLeaveEvent *)" (?dragLeaveEvent@QWidget@@MAEXPAVQDragLeaveEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::dragMoveEvent(class QDragMoveEvent *)" (?dragMoveEvent@QWidget@@MAEXPAVQDragMoveEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::dragEnterEvent(class QDragEnterEvent *)" (?dragEnterEvent@QWidget@@MAEXPAVQDragEnterEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::actionEvent(class QActionEvent *)" (?actionEvent@QWidget@@MAEXPAVQActionEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::tabletEvent(class QTabletEvent *)" (?tabletEvent@QWidget@@MAEXPAVQTabletEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QMainWindow::contextMenuEvent(class QContextMenuEvent *)" (?contextMenuEvent@QMainWindow@@MAEXPAVQContextMenuEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::closeEvent(class QCloseEvent *)" (?closeEvent@QWidget@@MAEXPAVQCloseEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::resizeEvent(class QResizeEvent *)" (?resizeEvent@QWidget@@MAEXPAVQResizeEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::moveEvent(class QMoveEvent *)" (?moveEvent@QWidget@@MAEXPAVQMoveEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::paintEvent(class QPaintEvent *)" (?paintEvent@QWidget@@MAEXPAVQPaintEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::leaveEvent(class QEvent *)" (?leaveEvent@QWidget@@MAEXPAVQEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::enterEvent(class QEvent *)" (?enterEvent@QWidget@@MAEXPAVQEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::focusOutEvent(class QFocusEvent *)" (?focusOutEvent@QWidget@@MAEXPAVQFocusEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::focusInEvent(class QFocusEvent *)" (?focusInEvent@QWidget@@MAEXPAVQFocusEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::keyReleaseEvent(class QKeyEvent *)" (?keyReleaseEvent@QWidget@@MAEXPAVQKeyEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::keyPressEvent(class QKeyEvent *)" (?keyPressEvent@QWidget@@MAEXPAVQKeyEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::wheelEvent(class QWheelEvent *)" (?wheelEvent@QWidget@@MAEXPAVQWheelEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::mouseMoveEvent(class QMouseEvent *)" (?mouseMoveEvent@QWidget@@MAEXPAVQMouseEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::mouseDoubleClickEvent(class QMouseEvent *)" (?mouseDoubleClickEvent@QWidget@@MAEXPAVQMouseEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::mouseReleaseEvent(class QMouseEvent *)" (?mouseReleaseEvent@QWidget@@MAEXPAVQMouseEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QWidget::mousePressEvent(class QMouseEvent *)" (?mousePressEvent@QWidget@@MAEXPAVQMouseEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall QWidget::heightForWidth(int)const " (?heightForWidth@QWidget@@UBEHH@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual class QSize __thiscall QWidget::minimumSizeHint(void)const " (?minimumSizeHint@QWidget@@UBE?AVQSize@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual class QSize __thiscall QWidget::sizeHint(void)const " (?sizeHint@QWidget@@UBE?AVQSize@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall QWidget::setVisible(bool)" (?setVisible@QWidget@@UAEX_N@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QObject::disconnectNotify(char const *)" (?disconnectNotify@QObject@@MAEXPBD@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QObject::connectNotify(char const *)" (?connectNotify@QObject@@MAEXPBD@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QObject::customEvent(class QEvent *)" (?customEvent@QObject@@MAEXPAVQEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QObject::childEvent(class QChildEvent *)" (?childEvent@QObject@@MAEXPAVQChildEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual void __thiscall QObject::timerEvent(class QTimerEvent *)" (?timerEvent@QObject@@MAEXPAVQTimerEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual bool __thiscall QObject::eventFilter(class QObject *,class QEvent *)" (?eventFilter@QObject@@UAE_NPAV1@PAVQEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "protected: virtual bool __thiscall QMainWindow::event(class QEvent *)" (?event@QMainWindow@@MAE_NPAVQEvent@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall notepad::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@notepad@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual void * __thiscall notepad::qt_metacast(char const *)" (?qt_metacast@notepad@@UAEPAXPBD@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall notepad::metaObject(void)const " (?metaObject@notepad@@UBEPBUQMetaObject@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall QMainWindow::~QMainWindow(void)" (??1QMainWindow@@UAE@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QMainWindow::setCentralWidget(class QWidget *)" (?setCentralWidget@QMainWindow@@QAEXPAVQWidget@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QWidget::setWindowTitle(class QString const &)" (?setWindowTitle@QWidget@@QAEXABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QWidget::addAction(class QAction *)" (?addAction@QWidget@@QAEXPAVQAction@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: class QMenu * __thiscall QMenuBar::addMenu(class QString const &)" (?addMenu@QMenuBar@@QAEPAVQMenu@@ABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: class QMenuBar * __thiscall QMainWindow::menuBar(void)const " (?menuBar@QMainWindow@@QBEPAVQMenuBar@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: static bool __cdecl QObject::connect(class QObject const *,char const *,class QObject const *,char const *,enum Qt::ConnectionType)" (?connect@QObject@@SA_NPBV1@PBD01W4ConnectionType@Q
t@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "private: static void __cdecl QString::free(struct QString::Data *)" (?free@QString@@CAXPAUData@1@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QAction::QAction(class QString const &,class QObject *)" (??0QAction@@QAE@ABVQString@@PAVQObject@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QPushButton::QPushButton(class QWidget *)" (??0QPushButton@@QAE@PAVQWidget@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QTextEdit::QTextEdit(class QWidget *)" (??0QTextEdit@@QAE@PAVQWidget@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QMainWindow::QMainWindow(class QWidget *,class QFlags<enum Qt::WindowType>)" (??0QMainWindow@@QAE@PAVQWidget@@V?$QFlags@W4WindowType@Qt@@@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall QMessageBox::~QMessageBox(void)" (??1QMessageBox@@UAE@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: int __thiscall QDialog::exec(void)" (?exec@QDialog@@QAEHXZ)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QMessageBox::setDefaultButton(enum QMessageBox::StandardButton)" (?setDefaultButton@QMessageBox@@QAEXW4StandardButton@1@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QMessageBox::setStandardButtons(class QFlags<enum QMessageBox::StandardButton>)" (?setStandardButtons@QMessageBox@@QAEXV?$QFlags@W4StandardButton@QMessageBox@@@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QMessageBox::setText(class QString const &)" (?setText@QMessageBox@@QAEXABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QMessageBox::QMessageBox(class QWidget *)" (??0QMessageBox@@QAE@PAVQWidget@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall QTextStream::~QTextStream(void)" (??1QTextStream@@UAE@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall QFile::close(void)" (?close@QFile@@UAEXXZ)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QTextEdit::setText(class QString const &)" (?setText@QTextEdit@@QAEXABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: class QString __thiscall QTextStream::readAll(void)" (?readAll@QTextStream@@QAE?AVQString@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QTextStream::QTextStream(class QIODevice *)" (??0QTextStream@@QAE@PAVQIODevice@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall QFile::~QFile(void)" (??1QFile@@UAE@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: static enum QMessageBox::StandardButton __cdecl QMessageBox::critical(class QWidget *,class QString const &,class QString const &,class QFlags<enum QMessageBox::StandardButton>,enum QM
essageBox::StandardButton)" (?critical@QMessageBox@@SA?AW4StandardButton@1@PAVQWidget@@ABVQString@@1V?$QFlags@W4StandardButton@QMessageBox@@@@W421@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: virtual bool __thiscall QFile::open(class QFlags<enum QIODevice::OpenModeFlag>)" (?open@QFile@@UAE_NV?$QFlags@W4OpenModeFlag@QIODevice@@@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: __thiscall QFile::QFile(class QString const &)" (??0QFile@@QAE@ABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: static class QString __cdecl QFileDialog::getOpenFileName(class QWidget *,class QString const &,class QString const &,class QString const &,class QString *,class QFlags<enum QFileDialo
g::Option>)" (?getOpenFileName@QFileDialog@@SA?AVQString@@PAVQWidget@@ABV2@11PAV2@V?$QFlags@W4Option@QFileDialog@@@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "private: static struct QString::Data * __cdecl QString::fromAscii_helper(char const *,int)" (?fromAscii_helper@QString@@CAPAUData@1@PBDH@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QTextStream::flush(void)" (?flush@QTextStream@@QAEXXZ)
notepad.obj : error LNK2001: unresolved external symbol "public: class QTextStream & __thiscall QTextStream::operator<<(class QString const &)" (??6QTextStream@@QAEAAV0@ABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: static class QString __cdecl QFileDialog::getSaveFileName(class QWidget *,class QString const &,class QString const &,class QString const &,class QString *,class QFlags<enum QFileDialo
g::Option>)" (?getSaveFileName@QFileDialog@@SA?AVQString@@PAVQWidget@@ABV2@11PAV2@V?$QFlags@W4Option@QFileDialog@@@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: static void __cdecl QCoreApplication::quit(void)" (?quit@QCoreApplication@@SAXXZ)
notepad.obj : error LNK2001: unresolved external symbol "public: void __thiscall QMessageBox::setWindowTitle(class QString const &)" (?setWindowTitle@QMessageBox@@QAEXABVQString@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: bool __thiscall QString::operator==(class QLatin1String const &)const " (??8QString@@QBE_NABVQLatin1String@@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: bool __thiscall QString::operator==(class QString const &)const " (??8QString@@QBE_NABV0@@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: static class QString __cdecl QString::fromAscii(char const *,int)" (?fromAscii@QString@@SA?AV1@PBDH@Z)
notepad.obj : error LNK2001: unresolved external symbol "private: static class QTextCodec * QString::codecForCStrings" (?codecForCStrings@QString@@0PAVQTextCodec@@A)
notepad.obj : error LNK2001: unresolved external symbol "public: class QString __thiscall QTextDocument::toPlainText(void)const " (?toPlainText@QTextDocument@@QBE?AVQString@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: class QTextDocument * __thiscall QTextEdit::document(void)const " (?document@QTextEdit@@QBEPAVQTextDocument@@XZ)
notepad.obj : error LNK2001: unresolved external symbol "public: class QString __thiscall QMetaObject::tr(char const *,char const *)const " (?tr@QMetaObject@@QBE?AVQString@@PBD0@Z)
notepad.obj : error LNK2001: unresolved external symbol "public: static struct QMetaObject const notepad::staticMetaObject" (?staticMetaObject@notepad@@2UQMetaObject@@B)
Release/main.exe : fatal error LNK1120: 100 unresolved externals
Error executing link.exe.
