[Development] Reusing Qt code (or: saving .ico files)

Konstantin Tokarev annulen at yandex.ru
Fri Jan 13 12:01:10 CET 2017

13.01.2017, 13:29, "René J.V. Bertin" <rjvbertin at gmail.com>:
> Hello,
> Can someone please have a look at the KDE RR below and tell us whether or not it's OK to include qicohandler.* the way I propose in the patch under review? There are some whitespace changes and I added a preprocessor token to exclude ico read support.
> My understanding of the GPL legalese is that it should be OK but Christoph is right that we have to double-check.

Your ksvg2ico.cpp is licensed as LGPL 2.1 or 3, while QtIcoHandler is licensed as LGPL3, so combined work cannot be used as LGPL 2.1. If these is fine, I don't see any problems here (but IANAL)

Alternatively you can import QtIcoHandler from Qt 5.6 which is licensed as LGPL 2.1

> Maybe we all overlooked something and there is another way to create .ico files, without needing to use (and thus include) QtIcoHandler explicitly? I see that the relevant QtBase code is built on Linux and Mac but I cannot tell whether it is also installed (the header isn't in any case).
> Thanks,
> René
> -------------------------------
> Forwarded message:
> Date: Friday January 13 2017
> From: Christoph Feck <cfeck at kde.org>
> Subject: Re: Review Request 129807: proposal: add ksvg2ico
> https://git.reviewboard.kde.org/r/129807/#review101968
> Someone more experienced with legal matters should review the verbatim inclusion of Qt code; in particular the license header.
> - Christoph Feck
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