Is it OK to use the MIT license for a project that uses Qt?

Question

I built a Qt application. Am I allowed to LICENSE it under the MIT license?

Qt is a cross-platform application and UI framework for developers using C++ or QML, a CSS & JavaScript like language. Qt Creator is the supporting Qt IDE. Qt Cloud Services provides connected application backend features to Qt applications.

Qt, Qt Quick and the supporting tools are developed as an open source project governed by an inclusive meritocratic model. Qt can be used under open source (GPL v3 and LGPL v2.1) or commercial terms.

http://qt-project.org/

Since Qt is licensed under LGPL v2.1, I guess the answer is Yes, it's fine to use the MIT license on my non-commercial app.

The LICENSING page is too complicated for me.

So, is there any problem if I licensed my app under the MIT license?

Answer 1

No, there is no problem.

From the LGPL:

A “Combined Work” is a work produced by combining or linking an Application with the Library.

Also (emphasis added):

You may convey a Combined Work under terms of your choice that, taken together, effectively do not restrict modification of the portions of the Library contained in the Combined Work and reverse engineering for debugging such modifications, if you also do each of the following:

It then goes on to provide a short list of things you must do such as including the LGPL license with your software, display a notice in your software that it uses an LGPL library, etc. For more information, see section 4 of the LGPL license.