I would give another chance to QtCreator.
I have some libraries to add to the project.
I added into the source project .pro.
I also added the variable name QWT by using the Project menu.
But when I start the compilation, many errors appear: the compiler do not find the libraries and the include files of the library.
What is that?
(For instance, the library is QT).
With mingw fram the shell, no problem