Qt 5.4 released

[Posted December 10, 2014 by corbet]

Version 5.4 of the Qt toolkit is now available. It provides better interaction with web-based content, improved graphics, Bluetooth Low Energy support, and a lot more, including a licensing change: "As announced earlier, the open-source version for Qt 5.4 is also made available under the LGPLv3 license. The new licensing option allows us at The Qt Company to introduce more value-add components for the whole Qt ecosystem without making compromises on the business side. It also helps to protect 3rd party developers’ freedom from consumer device lock-down and prevents Tivoization as well as other misuse."

Qt 5.4 released

Posted Dec 10, 2014 19:35 UTC (Wed) by josh (subscriber, #17465) [Link] (3 responses)

The new licensing raises an interesting question: how does this affect GPLv2 software using Qt? GPLv2 and LGPLv3 don't play nice together.

Qt 5.4 released

Posted Dec 10, 2014 19:38 UTC (Wed) by dlang (guest, #313) [Link] (1 responses)

if it's in addition to the existing licenses (which is what it sounds like from the announcement) there is no problem, just pick the license compatible with your code and ignore the others.

The problem is in accepting code, they can only accept code compatible with all licenses.

Qt 5.4 released

Posted Dec 10, 2014 21:25 UTC (Wed) by josh (subscriber, #17465) [Link]

From http://www.qt.io/licensing/ :

> some modules are available under LGPLv2.1, LGPLv3 or GPL v3 and some other modules under LGPLv3 only.

Qt 5.4 released

Posted Dec 11, 2014 20:07 UTC (Thu) by sune (subscriber, #40196) [Link]

Afaik, except the things that uses apache2 licensed bits (android specifics), things are either licensed under lgplv3|gplv2 or lgplv2.1|(l)gplv3, so for opensource bits, there shouldn't as such be any problems with it