Why Am I Getting a Qt Linker Error: 'undefined reference to vtable for BarelySocket'?

Qt Linker Error: "undefined reference to vtable for BarelySocket"

Question:

While working on a Qt project, you encounter a linker error indicating "undefined reference to vtable for BarelySocket." Despite lacking virtual methods in the class, you continue to receive the error even after commenting out suspected elements.

Answer:

This error can arise if you have not run qmake after adding a new call to the Q_OBJECT macro. When you modify your code to interact with Qt objects, you must run qmake to generate the necessary vtables.

Solution:

To resolve the error, follow these steps:

1. Make sure you have properly implemented the Q_OBJECT macro in your class header.
2. Run qmake to generate the meta-object code.
3. Rebuild your project.

By following these steps, qmake will create the necessary vtables for your class, allowing the linker to resolve the reference and compile your code successfully.

The above is the detailed content of Why Am I Getting a Qt Linker Error: 'undefined reference to vtable for BarelySocket'?. For more information, please follow other related articles on the PHP Chinese website!