This software uses some of Qt modules (version 5.15.2).

You can get the source code of qt5 (branch 5.15.2) from:

https://github.com/qt/qt5.git

or

https://github.com/hpmicro/qt5.git

which is a mirror repository of qt/qt5.git at branch 5.15.2.

Licensed under LGPLv3.0
            
The Qt Toolkit is Copyright (C) 2018 The Qt Company Ltd.
Contact: http://www.qt.io/licensing/

You may use, distribute and copy the Qt Toolkit under the terms of
GNU Lesser General Public License version 3. 
This license makes reference to the version 3 of the GNU General
Public License, which is displayed at LGPL-3.0.txt.