LGPL for commercial proprietary library

Gourmet

I understand well if I need distribute proprietary application with LGPL and Qt. But how can I distribute a commercial library using Qt? Is this possible? Well, I made a small toolkit with some functions. It uses Qt5. I build it as DLL for Windows and SO for *NIXes. Can I sell it under LGPL without source code and without Qt libraries? Or should I include Qt libraries nevertheless?

If somebody read any article about this specific situation - please give me link. Or may be somebody here can ask this from Qt support. This case is not clearly covered by Qt docs.

SGaist

Hi,

Felgo seems to do it.

As for contacting the Qt Company, that is something you can do directly.

mchinand

Your library may still fall under the terms of an 'Application' as it is defined in the LGPL. https://www.gnu.org/licenses/lgpl-3.0.en.html

Gourmet

@SGaist said in LGPL for commercial proprietary library:

Felgo seems to do it.

What is most interesting - Are you sure Felgo uses LGPL instead of commercial Qt license?

SGaist

@Gourmet said in LGPL for commercial proprietary library:

@SGaist said in LGPL for commercial proprietary library:

Felgo seems to do it.

What is most interesting - Are you sure Felgo uses LGPL instead of commercial Qt license?

I don't know. A question you should ask them.