[Interest] Qt Creator licensing for companies with Qt Commercial developers
Tomas Konir
tomas.konir at gmail.com
Fri Mar 27 20:51:09 CET 2020
I'm not sure how it works worldwide, but for example in Czech Republic.
Contract for one product can't forbid you to use another product. It is not
legal.
Commercial QtCreator and Open Source QtCreator are two different products.
We are talking about two people who both are editing same code (not at same
time of course).
First one uses QtCreator from Commercial Qt and the second one uses GPL
QtCreator.
BTW. If you want to be 100% sure, than let both developers use GPL
QtCreator and problem is solved ...
(I hope, that Qt Commercial license don't force to use Qt Libraries only
with Commercial QtCreator).
Than developers working with Qt Libraries and others who don't, can use
same IDE.
Am I right?
Tom
pá 27. 3. 2020 v 20:09 odesílatel <mail at herrdiel.de> napsal:
> Hi.
>
> Tuuka clearly stated, that you wouldn't violate GPL of the (OS-)
> QtCreator, **but** you'd violate your commercial contract with Qt.
>
> If the commercial contract says, you are not allowed to have a cat in
> the house and you've signed that contract - then youd better get rid of
> Garfield.
>
> It doesn't matter if pets are allowed inside the building if they are
> clean. It doesn't matter if the bunch of people who that contract was
> signed for is sitting in a different room.
>
> This contract - as I reed Tuukas words - doesn't allow mixed use of
> commercial & OS inside a *company*. That's it.
>
> (NAL2)
>
> BR
>
> Sebastian
>
> P.S.: My personal view on that: stupid contract in the first place.
>
>
> Am 27.03.2020 um 19:51 schrieb Michael Jackson:
> > OK, Here goes the explanations of how to interoperate with Qt Software
> packages. IANAL. We will start from the easy and work our way towards
> difficult.
> >
> > QtCreator: QtCreator is free. You, as a developer of software, can use
> QtCreator as your IDE to develop your own software. The GPL license of
> QtCreator will NOT infect your software. Use QtCreator to create open or
> closed software. Free or commercial. Your choice.
> >
> > QtCreator as Part of a Commercial Qt License: The only thing this gets
> you is the ability to get some "commercial" support versus just posting on
> the qt-creator mailing list.
> >
> > Modifying QtCreator: If you are actually modifying QtCreator yourself to
> create a distribution outside of your organization then ANY codes you write
> or modify are subject to the QtCreator license. This has ramifications if
> you happen to have a Qt commercial license.
> >
> > Using Qt5 in your software project: If you use Qt in your project
> ANYBODY contributing to that same project MUST have the same kind of Qt
> license. Period. Full Stop.
> >
> > For the original question;
> > "Is it still possible for the developers who don't use Qt libraries in
> > any way, use Qt Creator IDE for editing and debugging?"
> >
> > The answer is YES, but the devil is in the details. They *should* be
> able to just download the free version of QtCreator from
> http://download.qt.io and use that version. They can't use the
> "commercial" version of QtCreator unless they have a commercial license for
> Qt. But if their projects are *not* using Qt, then why do they have a
> commercial license for Qt?
> >
> >
> > Again, IANAL, but I believe this to be a reasonable summary of the
> licensing of QtCreator and Qt.
> > --
> > Mike Jackson
> >
> >
> >
> > On 3/27/20, 12:21 PM, "Interest on behalf of alexander golks" <
> interest-bounces at qt-project.org on behalf of alex at golks.de> wrote:
> >
> > Am Fri, 27 Mar 2020 17:11:16 +0100
> > schrieb Jean-Michaël Celerier <jeanmichael.celerier at gmail.com>:
> >
> > > It is also the license of the binaries that you can download there
> :
> > > https://download.qt.io/official_releases/qtcreator/4.11/4.11.1/
> > >
> > > And it states quite succintly :
> > > "This License explicitly affirms your unlimited permission to run
> the
> > > unmodified Program."
> > >
> > > > but if you just use qtcreator, just use it. its free.
> > >
> > > well, that is not what
> > > "
> > > Anyways, I'll now explain again the answer to the original
> question asked.
> > > The question was, as I understood it, "Is it allowed that people
> working in
> > > a project use commercially licensed Qt and some other persons in
> the same
> > > project who do not develop Qt use open-source licensed Qt tools?"
> > >
> > > Answer to this is: No, it is not allowed to mix commercial
> "Licensed
> > > Software" and the open-source versions provided by The Qt Company
> in the
> > > same project."
> > >
> > > seems to mean, which is why I'm wondering.
> >
> > the problem is, as already stated, that some did not answer your
> question properly.
> > i understood your question. and as i said, your mixing up things. as
> we say: you mix apples and pears.
> >
> > you're talking about using an executable X, based on open source
> software.
> > you're talking about using an library Y, for which you have a
> license, based on open source software, too.
> > you're talking about using exec X to use Y somehow.
> > you're talking about using exec X with other libraries.
> >
> > now what has tool X todo with library Y? nothing.
> > well, it happen to be that tool X is written using library Y, but
> thats of no concern here.
> >
> > the licese for Y only clearifies how you may use/include the library
> Y into your projects,
> > and not how to use tool X to build apps using library Y.
> >
> >
> >
> > other words:
> > would you ask if you have to use the commercial vs license because
> you bought a qt license?
> >
> > --
> > /*
> > *printk(KERN_DEBUG "%s: Done reprogramming Xilinx, %d bits, good
> luck!\n",...);
> > * linux-2.6.6/drivers/net/wan/lmc/lmc_main.c
> > */
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> >
> >
> >
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>
> --
> http://www.classintouch.de - Tablet-Software für Lehrer
>
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--
Tomas Konir
Czech Republic
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