undefined to reference to qt_wait_for_window_manager

I am porting Qt3 to Qt4 and am running into a linking error via the above function. It is being used in the same manner listed here: https://doc.qt.io/archives/qq/qq04-splashscreen.html

That is,

Code:

---

#if defined(Q_WS_X11)
    void qt_wait_for_window_manager( QWidget *widget );
#endif
 
    void SplashScreen::finish( QWidget *mainWin )
    {
#if defined(Q_WS_X11)
        qt_wait_for_window_manager( mainWin );
#endif
        close();
    }

---

Is this specific to Qt3 that I should not worry about with Qt4? I just ask because the only references I find are the previous url and what looks to be Qt3 code.

It mentions that this is platform-specific, does that mean that my OS (CentOS 7.7) does not contain this?

Just remove it and see if it works - I doubt this is needed anymore.

this worked, thanks!