Unsolved QStringLiteral was not declared in this scope

[HashDragon]

Hello everyone,
I am trying to compile a small piece of code which involves the usage of the QStringLiteral library but the compilation always terminates with that error.
Here are the details :
QMake version 3.0
Using QT Version 5.2.1
QTCreator 3.0.1
OS : Ubuntu

I have added CONFIG+=c++11 in the pro file as per the documentation.
Thanks in advance.

[VRonin]

That normally happens when you try and compile with Qt4, could you post the code?