[Development] license question, bds 4 clause license text in qtbase\src\corelib\tools\qdatetime.cpp qt5.4.1 found

[Knoll Lars]

It’s an old left over from Qt 1 days. Let’s get rid of it.

https://codereview.qt-project.org/#/c/107400/

Cheers,
Lars

From: Gunnar Roth <gunnar.roth at gmx.de<mailto:gunnar.roth at gmx.de>>
Date: Friday 27 February 2015 08:40
To: "development at qt-project.org<mailto:development at qt-project.org>" <development at qt-project.org<mailto:development at qt-project.org>>
Subject: [Development] license question, bds 4 clause license text in qtbase\src\corelib\tools\qdatetime.cpp qt5.4.1 found

Hi all,
i have a question according license compatibilty.
In qtbase\src\corelib\tools\qdatetime.cpp above line 601 in qt5.4.1 i found this:
  \legalese
    Copyright (c) 1989 The Regents of the University of California.
    All rights reserved.
    Redistribution and use in source and binary forms are permitted
    provided that the above copyright notice and this paragraph are
    duplicated in all such forms and that any documentation,
    advertising materials, and other materials related to such
    distribution and use acknowledge that the software was developed
    by the University of California, Berkeley.  The name of the
    University may not be used to endorse or promote products derived
    from this software without specific prior written permission.
    THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    \sa isValid()
*/
int QDate::weekNumber(int *yearNumber) const
{


advertising materials, and other materials related to such
    distribution and use acknowledge that the software was developed
    by the University of California, Berkeley.
is the so called adevrtising clause which is know to not be kompatible with GPL or LPGL, so how can it be that i find this kind of license in qt source code?
What are the obligations to follow when using commercial license?

Regards,
Gunnar Roth

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