moc_ files broken while importing a Qt project from another machine?

0
votes

I downloaded a Qt project but when I want to compile it, it gives the following error on "release" mode:

moc_mainwindow.cpp:-1: error: undefined reference to 'MainWindow::on_pushButton_2_clicked()' moc_adminpage.cpp:-1: error: undefined reference to 'AdminPage::on_pushButton_clicked()'

And doesn't compile at all

On "debug" mode however it does compile and the exe runs BUT then it gives the following warning:

QMetaObject::connectSlotsByName: No matching signal for on_pushButton_clicked() QMetaObject::connectSlotsByName: No matching signal for on_lineEdit_editingFinished()

And the noted "pushButton" does not do anything when it's clicked!

So I know a little about moc files, but I have never had to actually do anything with them. I'm guessing there is something wrong with them though. It looks like Qt cannot connect my on_pushButton_clicked() function (slot) to pushButton clicked signal.

PS 1: The errors noted in the "release" part take place in the moc files.

PS 2: In each of my moc files on the first line there is an #include "../../FinalProject/mainwindow.h which causes the following warning

no such file o directory

This probably must be it, but how can I fix it ?

1
c++qt
Are you using qmake as your build system? Did you also download the moc_* files? Have you tried deleting them and let qmake regenerate them? – Nikos C.
@NikosC. : yes im using qmake . i tried deleting them . it throws another error at me saying cant find the moc files . – A73rnA
Please show the command you're using to build the project, including the call to qmake. – Nikos C.
have you tried deleting all "Makefile" files in your build directory? – ariwez

1 Answers

0
votes

The errors are caused because you have defined the slots on_pushButton_clicked() and on_lineEdit_editingFinished() but you have not used its. Check your mainwindow.h and delete these slots from private slots: section.