Qt: QHostAddress: No such file or directory

Question

I'm new to Qt and when I try to run a program I get import error

fatal error: QHostAddress: No such file or directory

Caused by the import in main.cpp

#include <QCoreApplication>
#include <QHostAddress>

It seems that there is missing of QHostAddress.h while QCoreApplication.h is available

Answer 1

Make sure you have something to the effect of :

QT += network

In your .pro file. Then run qmake again, and recompile.