<div dir="ltr"><div>Hi Christian,</div><div><br></div><div>Though I'm a lawyer, I'm not your lawyer, and this is not legal advice.</div><div><br></div><div>In a case like this, I would treat the code as GPLv2-only. Typically, the "or-later" permission is specified in the GPLv2 license headers in individual code files, or else in some top-level documentation such as the README file. If there is no such indication that the authors have authorized use of the code under a later version of the GPL, then the safe assumption is that they did not authorize this. </div><div><br></div><div>Nothing in the text of GPLv2 indicates to me that a failure to specify "only" means the default is "or later" -- in fact, Section 9 suggests otherwise: </div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">"If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation." <br></blockquote><div><br></div><div>Best,</div><div>Aaron<br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 22, 2024 at 6:34 AM <<a href="mailto:c.buhtz@posteo.jp">c.buhtz@posteo.jp</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello together,<br>
<br>
My question in short: Is "GPLv2" by default "-only" or "-or-later" when <br>
the suffix is not explicit specified?<br>
<br>
I am a member of an upstream maintainer team that took over a project <br>
[1] two years ago.<br>
The project itself is round about 15 years old. We are the third <br>
generation of maintainers,<br>
and we lack contact with the earlier developers.<br>
<br>
The project is licensed under "GPLv2" without explicit specified suffix <br>
"-only" or "-or-later".<br>
This is stated on Microsoft GitHub, in the license file, and in the <br>
header of each code file.<br>
However, only the standard GPLv2 text has been copied without <br>
modification.<br>
I have no further information about the licensing.<br>
<br>
If I understand this standard text correctly, it does not clearly <br>
specify whether the<br>
project is "GPLv2-only" or "GPLv2-or-later". To my knowledge there are <br>
no exclusive<br>
license texts to this two variants. This distinction would need to be <br>
specified elsewhere.<br>
<br>
How should one handle this if I cannot determine it with certainty, <br>
especially since I<br>
cannot contact the previous authors? Are there any precedents for this?<br>
<br>
Can I freely interpret the license and simply state that it is <br>
"-or-later"?<br>
In this case the project would be more flexible to contributions in the <br>
future.<br>
<br>
Are there any court rulings, guidelines, or recommendations from <br>
advocacy<br>
groups (e.g., FSF, FSFE, OSSI, etc.) on this matter?<br>
<br>
Thank you<br>
Christian Buhtz<br>
<br>
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[1] -- <<a href="https://github.com/bit-team/backintime" rel="noreferrer" target="_blank">https://github.com/bit-team/backintime</a>><br>
[2] -- <<a href="https://opensource.stackexchange.com/q/14980/27952" rel="noreferrer" target="_blank">https://opensource.stackexchange.com/q/14980/27952</a>><br>
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