Questions tagged [gpl]

The GNU's General Public License, a commonly-used free software license. The GPL has various versions, v1-v3, so use this tag only for questions talking about overarching issues of the licenses or shared characteristics. For example, for a question about a unique section on version 3, use the [gpl-3] tag.

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11
votes
3answers
6k views

is CC BY license GPL compatible? CC BY vs CC0

CC0 license is GPL compatible. A component with such license can be included in GPL-licensed product. Is this true also for CC BY license? What is the difference between CC0 and CC BY licenses? ...
12
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3answers
1k views

Am I in danger if a project component is relicensed?

I am currently managing a project, which includes a library that is licensed under the MIT license. My current project is licensed under the Apache 2.0 license. The maintainers of the library that I ...
5
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2answers
317 views

Copyleft license that allows usage in plugins of closed-source host applications

I wrote a library that I want to release under the GPL to prevent it from being incorporated in closed source software. I do not want people to use this library in their closed source commercial ...
15
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2answers
4k views

Do I have to release my code as GPL when a Java Library is GPL

I have found a Java library that can be used under the GPL licence (not the LGPL licence). Can I embed the library in my program without the requirement of using the GPL licence? I have no ...
9
votes
1answer
301 views

GPL interpretation - What is our legal exposure if we include another project's code?

I am a contributor to a very old project presently licensed under the GPL. Our project is a plugin for a closed-source program, but the GPL does not permit this kind of linking. The GPL FAQ states: ...
7
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1answer
557 views

GPL Violation - What is our legal exposure to third parties (not our contributors)?

I am a contributor to a very old project presently in violation of the GPL. Our project is a plugin for a closed-source program, but the GPL does not permit this kind of linking. The project should ...
7
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2answers
2k views

Do I have to disclose the source code of a Linux Driver I have not developed?

A 3rd-party Hardware manufacturing company is willing to sell me a Linux Driver for one of their products. The third-party company claims that the Linux Driver is derivative work of the driver they ...
9
votes
1answer
1k views

How does the GPL's linking restriction apply when using a proprietary library with GPL'd interpreted code?

General description: Can I create Python software that will dynamically link against a closed-source library that has a C API (the Python interpreter is not copyleft) and will also utilize a GPL ...
7
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3answers
3k views

Proprietary software using GPL modules

This question is bases on: Why doesn't this GPL loophole work? If a program uses a GPL derived component, does said program also have to be GPL? For example: If a game uses a music player that ...
7
votes
2answers
363 views

Does sharing a file format make two programs either a combined or derived work?

This is a follow on from Does a file format constitute an API? This is an attempt to break down: Does a host application's license apply to plug-ins written for it? into the underlying questions. ...
24
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2answers
5k views

Why doesn't this GPL loophole work?

Suppose Alice makes some proprietary software. The source is available, but under a proprietary license which prohibits derivative works and sublicensing. Bob writes some GPLv3 code. Carol prepares ...
7
votes
1answer
788 views

What's the typical practice for cases when OSS license violation is found and fixed?

Suppose I ship binaries of a closed source product and it just so happens that there's a piece of GPL source code inside my giant codebase that I'm unaware of. At some point I find this GPL code and ...
10
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2answers
1k views

Does the GNU GPL 3 prohibit DRM?

Is DRM, which some spell as "Digital Rights Management", others as "Digital Restriction Management", allowed by the GPL? In other words, can software that implements DRM be licensed under the GPL? ...
13
votes
1answer
525 views

Is there a reason to prefer the SimPL over the GPL? Does it carry the same legal weight?

I just came across the SimPL License which is described as: This Simple Public License 2.0 (SimPL-2.0 for short) is a plain language implementation of GPL 2.0. The words are different, but the ...
7
votes
2answers
201 views

Are dates mandatory in GPL licences?

According to Wikipedia's Copyright Formalities and Copyright notice, dating or even putting the author copyright notice in unnecessary. And then explanations such as this Stack Overflow Post make me ...
1
vote
1answer
71 views

Changing code of an existing opensource application [closed]

I want to start an IDE (GPL compatible) based on QtCreator code (that is licensed under GPL and LGPL). Do I have to change all files/classes names within QtCreator source code because of L/GPL ...
13
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2answers
1k views

Are you obliged to enforce your license?

I've got a number of software projects, licensed under varying licenses. For simplicity, let's take one of them, licensed under the GPL. Obviously, the GPL requires various things, and there may be ...
8
votes
3answers
696 views

Does using the GPL for a program make it GNU software?

Let's assume I write a program and release it under the GNU GPL. Can I call this software "GNU software"? If not, what is necessary to make it a part of GNU?
31
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3answers
2k views

Do I really need to include a licence file for common licences like GPL or MIT?

The GPL3, for example, says: Conveying Verbatim Copies. You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and ...
17
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1answer
2k views

GPL v3 "convey" vs. GPL v2 "distribute"

I've noticed that the GNU GPL version 3 uses the word "convey" where version 2 used "distriubte": GNU GPLv3: To “convey” a work means any kind of propagation that enables other parties to make or ...
10
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2answers
1k views

Can I omit the preamble of the GPL?

The GNU GPL is very long. If I have to include a copy of it with my program, can I drop the preamble to save space?
22
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2answers
1k views

How does GPL affect binary-only modifications?

GPL is a copyleft license where, if I make modifications to the source code and distribute the resulting binary, I need to provide the modified source code also under the GPL. What happens if I make ...
10
votes
2answers
754 views

GPL licenced code for a module of a closed source program

I want to create a dynamically loadable module (.dll or .so) for a closed source program, but I would like to make the source code of this module available, and I'd like it to be (A)GPL licensed, so ...
20
votes
1answer
528 views

What are the licensing terms of the text of the GPL?

The text of the GPLv3 starts with the following disclaimer: Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. What does this ...

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