Linked Questions

14
votes
5answers
3k views

Use GPLv3 library in a closed system (no software distribution)

I'm developing a software that will be preinstalled in a headless PC. The user will see the "output" of the software processing (sent with a given protocol via ethernet), and can configure some ...
8
votes
4answers
3k views

What is derivative work? What is “build upon”?

I have been reading up on Open Source licensing, but there is this one term that I think needs clarification: when is work derivative? If I have an image viewer that accepts a ZIP file and I ...
4
votes
2answers
2k views

What if I don't know whether my program will be linked to a GPL library or not?

Suppose a program uses an API which has two implementations: An MIT implementation which uses GPL libraries A newer version of it which no longer uses any GPL libraries Neither is distributed along ...
8
votes
2answers
6k views

Can a non-GPL python program use GPL Python module?

Suppose I have a Python library which is distributed under the GPL license. I would like to use that library in my program, that I may eventually want to distribute under non-GPL terms. The library ...
15
votes
2answers
823 views

What are the arguments for considering dynamic links to constitute derivative works?

The status of programs which are dynamically linked with Copyleft licensed binaries (such as a .dll) is contentious. I have created two questions for each side of the debate. The other can be found ...
5
votes
1answer
746 views

Will there be any restrictions if I use a MIT licensed module which is built on a GPL library in my commercial software?

I want to use a Python module (https://github.com/Belval/pdf2image) in my commercial software. This module is licensed under the MIT license whereas the library (Poppler) it is built on is licensed ...
8
votes
2answers
553 views

Are there examples of proprietary software that functionally depends on free software?

This question is a follow-up on a number of questions that all mention some sort of software architecture X for creating software composites, and then goes on to ask: "Will using X to create a ...
7
votes
2answers
344 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. ...
7
votes
2answers
459 views

Using GPL-ed library from code with more permissive license (MPL-2)

I'm writing a library and a tool on top of it, and I would like to release both under MPL-2. However, the library has an optional dependency, another library which is released under GPL (not LGPL). I ...
6
votes
1answer
924 views

Using GPL licensed library over a service for non-GPL softwares

I want to use a GPL v2 licensed library(esper) for commercially distributed non-GPL softwares but I need to make sure non-GPL software not violate GPL license. Can I use this library indirectly using ...
1
vote
2answers
857 views

Can you commercialize a GNU General Public License product?

So from what I understand a product under GNU General Public License needs to stay under GNU General Public License (with references to the previous copyright owner). So if you sell it then the full ...
9
votes
1answer
388 views

Creating an open-source project that includes Open Game License 1.0a content

Looking through Wizards of the Coast Open Game License 1.0a, and reading around it, it seems it is a weak copyleft license, where anyone can distribute content that derives from OGL content, provided ...
5
votes
2answers
218 views

If APIs aren't (shouldn't be) copyrightable, how can ZFS-on-Linux infringe the GPL?

Note: This is a question about a specific individual's viewpoints and beliefs. Good answers will cite that individual, or other people with similar beliefs. Bradley Kuhn of the Software Freedom ...
4
votes
3answers
181 views

Is linking a correct proxy for derivative work determination in (copyleft) FOSS licenses?

I tend to use these simple tests to determine if the copyleft terms of a third-party project apply to the calling/reusing code: if the calling code is linking (statically or dynamically) with GPL-...
3
votes
2answers
440 views

If some software states it is BSD-licensed, how can it be distributing itself with GPL/LGPL components?

For a specific example relating to my question, I offer VisIt. Per the licensing information for VisIt, it is stated that it is BSD-licensed. But, looking over the libraries used in VisIt, it can be ...

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