LGPL License and modified source code

[der.redhead]

Good morning everybody,

I am using Qt 4.6.2 with the LGPL license in a commercial product. For testing this product I used the QtTest module and the QSignalSpy class. The QSignalSpy enforces a Qt::DirectConnectoin which makes a stress test crash (see https://bugreports.qt-project.org/browse/QTBUG-2842 ).

So I copied the header file qsignalspy.h and substituted Qt::DirectConnection with Qt::QueuedConnection. This solved the problem. The new header file called just signalspy.h with the class SignalSpy is only used in the unit tests for my product.

My question is, if I have anything to do to satisfy the LGPL (because of the minor change)? Do I have to provide the modified sourcecode? And if so, to whom?

Thanks in advance!

Jan

[raven-worx]

if you're don't publish your modifications with your product you're not violating the LGPL ... for your personal use you can modify anything you want.

[sierdzio]

Both GPL and LGPL talk about distributing modified sources to users. You don't have to publish them world-wide. And since those are tests, basically you and your co-workers are those users ;)

In this case, additionally, I think Qt-exception works and you don't need to do anything, just like raven-worx said.