Lincense question for commercial app

[Daniel Kuster]

Hi,

yes, "used" in my case means basically calling the compiled executable
xelatex (which is according to CTAN licensed under X11 license) inside the
app.

An issue that might come up are the used fonts (which also have a separate
license I assume). But that's another issue.

Because GPL came up: TexLive itself is not under GPL. Only some packages
(based on CTAN search might be, or might be under another license for that
matter). Is that correct?

Sincerely,
Daniel Kuster

On Sat, 21 Jan 2023 at 03:39, Boris Veytsman <borisv at lk.net> wrote:

> KB> Date: Fri, 20 Jan 2023 15:59:20 -0700
> KB> From: Karl Berry <karl at freefriends.org>
>
>
> KB> It depends on what "used" means. For example, if the app is merely
> KB> executing a pdftex binary, then providing the sources that that built
> KB> that binary is sufficient.
> KB> https://www.gnu.org/licenses/gpl-faq.html#MereAggregation
>
> KB> Zdenek, in your case, wanting to link a GPL'd library, indeed,
> KB> I agree with your analysis. You are making one executable
>
> KB> -> not mere aggregation
> KB> -> all sources must be made available. --best, karl.
>
> Absolutely correct.  That's what I meant by saying "However, if you
> want to MODIFY the sources or link them as a library, you must be
> careful and read the individual licenses."  Linking to closed source
> app is allowed by LGPL, but not GPL.
>
> AFAIK, one of the purposes of TL is to enable its use in any setting,
> including commercial ones - as long as you "just execute it".
>
> --
> Good luck
>
> -Boris
>
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