[讨论]undefined reference to `QUdpSocket::QUdpSocket(QObject *)` [复制链接]

如题，编译时出现这种错误，环境为 Fedora8 + Qt-4.3.2 + qt-creator-linux-x86-opensource-2.4.1
跪求高手解答！谢谢

undefined reference to `QUdpSocket::QUdpSocket(QObject *)`

undefined reference to `QUdpSocket::bind(unsigned short)`

undefined reference to `QUdpSocket::QHostAddress()`

在.pro中加入QT += network