Question

I’m working on Qt and adding slots to my Qt Gui application is giving out the following error.

 symbol(s) not found for architecture x86_64.

when i comment out the slots block everything seems fine.

public slots:

Is there some kind of bug in QtCreator or am I doing something wrong.

I’m using Qt Creator 2.5.2 based on Qt 4.8.3(64-Bit) on Mac Osx 10.8 (mountain lion)

Edit: Here is my full class

#include <QMainWindow>
#include "qextserialport.h"

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private:
    Ui::MainWindow *ui;
    QextSerialPort *port;

public slots:
    void onDataAvailable();
};

Answer 1

From the code you posted, it seems you didn’t implement your slot function. So that would explain it.

If you did, then you might have to delete the makefile and regenerate it:

make distclean
qmake

So that the moc rules are updated.