[Interest] License for Qt6 QtMultimedia module (LGPL?)

[David M. Cotter]

+1

> On Feb 15, 2022, at 9:59 AM, Adam Light <aclight at gmail.com> wrote:
> 
> At https://doc.qt.io/qt-6/qtmultimedia-index.html <https://doc.qt.io/qt-6/qtmultimedia-index.html>, the Qt Multimedia module is listed as being available under these licenses:
> * commercial
> * LGPL, v3
> * GPL, v2
> 
> In a git checkout of the 6.2 branch, .gitmodules contains this:
> [submodule "qtmultimedia"]
> depends = qtbase qtshadertools
> recommends = qtdeclarative
> path = qtmultimedia
> url = ../qtmultimedia.git
> branch = 6.2
> status = addon
> 
> According to https://doc.qt.io/qt-6/qtshadertools-index.html <https://doc.qt.io/qt-6/qtshadertools-index.html>, the Qt Shader Tools module is available under these licenses:
> * commercial
> * GPL, v3
> 
> If qtshadertools is required in order to build qtmultimedia, and qtshadertools is not licensed under LGPL, how can qtmultimedia be licensed under LGPL?
> 
> Is it possible to build qtmultimedia in such a way as to not use/require qtshadertools? Our application uses qtmultimedia but I don't think it uses anything that involves qtshadertools. Our application currently uses Qt 5 under the LGPL license and unless I'm misunderstanding it seems that we would not be able to use Qt 6 under the LGPL license unless we get rid of qtmultimedia.
> 
> Thanks for any clarification
> 
> Adam

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