[提问]交叉编译QT5.7.0时提示‘QCoreApplication’ has not been declared [复制链接]

交叉编译QT5.7.0的源码时，执行make之后，报错


mainwindow.cpp: In member function ‘void MainWindow::updateView()’:
mainwindow.cpp:180:14: error: ‘QCoreApplication’ has not been declared
         if (!QCoreApplication::arguments().contains(QStringLiteral("--no_render_alpha")))
              ^
make[5]: *** [.obj/mainwindow.o] Error 1

如图所示，不知道有没有碰到过或者可以帮忙指点一下的。感激不尽了！
window.open('http://www.qtcn.org/bbs/attachment/Mon_1804/18_188568_22640eaaa861d76.png?87');" style="max-width:700px;max-height:700px;" onload="if(is_ie6&&this.offsetWidth>700)this.width=700;" >

刚接触QT，还请大神指点一二