Questions tagged [license-compatibility]

License compatibility is the comparison of two or more licenses to determine if certain usages and actions can be made. Use this tag if the question would like to determine the compatibility of licenses, or their individual clauses.

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16
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2answers
3k views

Combining code written under different licenses (Eiffel Forum License, MIT and Apache), what are my options?

So I'm new to all this licensing jazz, and I've just started work on a project I'd like to one day publish as open source. I've found a couple of projects so far that have code to accomplish stuff ...
16
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4answers
383 views

Does a host application's license apply to plug-ins written for it?

This was prompted by another question which reminded of a past experience. Consider the following: An open-source project supports a plug-in architecture The project is released under a copyleft ...
57
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3answers
3k views

How can I determine if two open source licenses are compatible with each other?

Given two open source projects, each with different licenses, are there metrics or resources I can use to determine if it is legitimate to copy code from one of the projects to the other?
18
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3answers
11k views

If I'm using a GPL 3 library in my project, can I license my project under MIT license?

If I'm using a library that is licensed under GPL v3 in my project, can I license my project under the MIT license? I tried to read the GPL v3 text but I cannot understand it without your assistance.
35
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6answers
2k views

Can I copy-paste a snippet from Stack Overflow into my GNU-GPL project?

I have found on Stack Overflow a 10-lines block of code that does exactly what I want. There is no license information in the post nor on the answerer's profile page, so the CC BY-SA 3.0 license of ...
17
votes
1answer
2k views

GPL V3 with OpenSSL Exception

I've decided to license some code I have yet to release under the GPL v3. However, OpenSSL is used quite a bit in the software and I know that the two licenses are explicitly cited as being ...
11
votes
2answers
313 views

What counts as adaptation for using code licensed under CC BY-SA 4.0 in software licensed under GPLv3?

Since 2015-10-08, GPLv3 is listed as one-way compatible license for CC BY-SA 4.0: […] you may license your contributions to adaptations of BY-SA 4.0 materials under GPLv3, but you may not license ...
8
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1answer
1k views

Adding feature to an Apache v2 package

I'm working on one npm package based on another one but with another approach, this package is licenced under Apache v2 and I want to use MIT. After some use of my package I've noticed I need to use ...
5
votes
1answer
183 views

Must CC BY-SA be included for ideas and code taken from Stack Overflow?

I'm still unclear about licensing. If I have a project on Github that's licensed under GPL and found pseudocode on a Stack Overflow question, must I now dual license my code on Github and GPL as ...
28
votes
4answers
7k views

Can I use my own GPL'ed code in my closed source program?

Let's say that program A was made by me, with me being the sole copyright holder. If I license this program under the GPL-3.0, can I use that program in program B that is closed source?
24
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9answers
7k views

Can I modify an open source license to require that I be notified?

I often use the MIT license for my projects. But recently I've had the thought that I really would like to be notified if someone forked my software, whether it's for personal use, released or not I ...
18
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2answers
5k views

Can I link a Apache 2.0 library into software under GPLv2?

The Apache 2.0 License has a built-in linking exception: For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to ...
15
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2answers
5k views

How is the BSD GPL-compatible?

The BSD license says that derivative works may be distributed under the following conditions: Redistribution and use in source and binary forms, with or without modification, are permitted ...
11
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2answers
620 views

Can I use GPL v3 for source code and CC BY-SA v3 for comments?

I have some source code for which I am the copyright holder. I want to release it under the GPL, but when it was closed source, I copied a bunch of a stuff from Wikipedia for a couple of classes and ...
13
votes
1answer
2k views

How to licence a project which includes MIT, BSD, Modified BSD, and New BSD libraries

I've been working on a project for a while, and I'm almost ready to release it, but I've been more concerned with getting it to build than legal considerations, and now I'm not at all sure where I ...
4
votes
1answer
145 views

GPL Application <-> LGPL Plugin <-> Properietary code

I would like to explicitly consider possibility of having either of Fig.1: (1-A) A GPL application with dlopen-based plugin system. (1-B) LGPL plugin for application (1-A), that is linked to (1-C) (...
3
votes
1answer
107 views

Meaning of “and” and “additionally” connectors with two Open Source licenses

[This question is an expansion of the question "Meaning of OFL and GPL" because of limits on the number of characters in comment-responses]. I am unsure of the meaning of the terms "and" and "...
22
votes
3answers
1k views

Copyfree Open Innovation License compatibility

I'm interested in the Copyfree Open Innovation License as a simpler alternative to Apache 2.0 (it is a permissive license with an explicit patent grant). But because it's not so popular, not much ...
6
votes
1answer
135 views

Can an interpreted program be under any license without restricted by its GPL'ed run-time environment?

If I write a run-time environment based on some GPL'ed libraries and separately write an program interpreter which is passively used by the run-time environment, can a program (which is intended to be ...
3
votes
1answer
715 views

Release code with MIT dependencies under GPL

I am creating a game and want to release the code under a copyleft license (GPL 2 or 3). So far, so good, but there are multiple MIT-licensed library dependencies. Can I still release my code under ...
1
vote
1answer
45 views

Incorporating GPL patches into commercial version of our software

If we distribute our software both GPL and under a commercial license, do we have the right to incorporate third party patches into the commercial version of our software?
18
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2answers
1k views

Can I “upgrade” the version of CC BY-SA from 3.0 to 4.0 in my modification?

What I'm doing: I'm adapting a work licensed under CC BY-SA 3.0 Unported license to a different language. I'm indicating the original work and its license. I'm indicating that I have made changes to ...
13
votes
4answers
621 views

Are licenses affected if the author adds conflicting clauses alongside?

I see this one quite a lot: an author releases something under a standard free/open license (i.e. not a crayon license), but on the same release page adds a clause that conflicts with the license. I.e....
9
votes
3answers
4k views

Linking from LGPL 2.1 software to Apache 2.0 library

The FSF claims that GPL v2 is incompatible with Apache 2.0 and that linking to a library generally creates a derivative work of this library. However, the linking exception of the LGPL allows ...
17
votes
2answers
1k views

Are permissive licenses (MIT/BSD/zlib) compatible with CC-BY?

Permissive licenses like MIT only require that you include the license text if you redistribute. CC licenses that have the BY part require that the original authors are attributed, but in flexible ...
13
votes
2answers
962 views

Is Stack Exchange's CC-BY-SA v3.0 content compatible with the GPL?

Currently, all user submitted content is licensed under "cc by-sa 3.0 with attribution required". This shows up at the bottom of each page: user contributions licensed under cc by-sa 3.0 ...
12
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4answers
5k views

Are CDDL and GPL really incompatible?

Wikipedia seems to suggest that CDDL and GPL are incompatible, yet no one knows for sure why or how. Why and how are the CDDL and GPL are incompatible?
7
votes
1answer
161 views

Dual license compatibility

Suppose I place work I publish under two licenses. If the two have conflicting attributes which property should be used. Can you specify which properties you want two be applied from the two licenses?...
7
votes
1answer
1k views

Compatibility between EPL and LGPL

I'm using LGPL binaries, as well as EPL binaries for my open source project. Is this OK? And if yes, does that mean I should license my project under LGPL? The binaries are being used as dependencies ...
7
votes
2answers
2k views

Can I use a proprietary library in my GPL'd program?

The case of proprietary programs linking to GPL'd libraries has been discussed thoroughly. However the inverse case - a GPL'd program is linking to a proprietary library - is rarely mentioned. ...
6
votes
1answer
1k views

Can a video game have a GPL licensed engine and GPL-incompatible licensed assets? What about scripts?

I've heard that it's possible to use a GPL game engine that interprets/loads/JITs a so-called Game Pack which contains all the important game files such as sprites, sounds, music, levels, missions, ...
6
votes
1answer
1k views

Shipping GPL'd binaries in commercial product

I've read lots of discussion on shipping commercial products that link against GPLv2/3 libraries, and products that include code from GPLv2/3 software. But I haven't been able to satisfactorily answer ...
6
votes
2answers
762 views

Can I publish my iOS app store app code to GitHub under MIT/GPL

I am about to start developing an iOS app which will be published on Apple App Store. While developing this app, I am thinking to push all the code to GitHub public repository; pull requests from ...
5
votes
1answer
133 views

Using public domain code within Apache-or-MIT licensed project

I'm interested in borrowing functions from a file in a project dual-licensed as MIT-or-UNLICENSE in my package that I intend to also be dual-licensed as Apache-or-MIT. Is this possible? How should I ...
4
votes
1answer
922 views

Bundling JetBrains OpenJDK in closed source software

I am developing a software that comes bundled with JDK. I am planning to use JetBrains OpenJDK for this purpose as it comes with swing support for HighDPI monitors. JetBrains OpenJDK can be found in ...
2
votes
2answers
273 views

What permissions does LGPL-3.0 grant if the licensed work links against a proprietary library?

According to the FSF "The Lesser GPL permits use of the library in proprietary program". Is this permission granted in cases where an LGPL-3.0 licensed work links against a proprietary library? Both ...
1
vote
2answers
202 views

Can I use a library that is dual licensed GPL + LGPL as if it was only LGPL?

PaGMO 2 includes both GPL and LGPL in their copyright notices: Copyright 2017-2018 PaGMO development team This file is part of the PaGMO library. The PaGMO library is free software; you can ...
12
votes
2answers
108 views

Can I have one license cover part of a software and another covering the other half?

Scenario: Lets say I have a software I have been developing. I am about to release it but I first have to apply some licenses. Question: Suppose I want to release part of the software (the code) ...
11
votes
1answer
288 views

Can software licenced in Eclipse Public Licence be used in a project with GPL?

JUnit is licenced under Eclipse Public Licence which, according to Wikipedia, is incompatible with GPL. So does this mean if you’re working on a project licenced with GPL you can’t use JUnit? It's too ...
11
votes
4answers
1k views

Remove BSD LICENSE file while importing code into GPL project

Can LICENSE file be removed from 3rd party BSD project that is merged with GPLed code? There are license headers in each file, but files will be modified, so BSD license in them will no longer be ...
6
votes
3answers
318 views

What does 'terms that are compatible with the GPL' mean?

From Octave's FAQ, Code written using Octave's native plug-in interface (also known as a .oct file) necessarily links with Octave internals and is considered a derivative work of Octave and ...
4
votes
2answers
230 views

License similar to GPL, but allowing to incorporate into the commercial version

Continuing this question: I want a license L which is generally like GPL, but allows us to do the following: License our software under both L and a commercial license. Require that every patch (or ...
3
votes
1answer
95 views

Do Amazon AppStore terms allow for GPL software?

The terms for the Apple AppStore have been shown to conflict with the GNU GPL in such a way as to prevent GPL apps from being in the store — see this question. Are the Amazon AppStore (the standard ...
3
votes
1answer
291 views

Monogame mobile licensing with xamarin studio

I'm a bit confused on the licensing for Xamarin Studio and Monogame and Xamarin. If I develop a game in Xamarin Studio using Monogame and want to release it for iOS and Android which uses Xamarin can ...
3
votes
1answer
754 views

Can Public Domain use GPL licensed library/program?

A similar question already asked here (https://softwareengineering.stackexchange.com/questions/159023/can-cc0-code-use-a-gpl-library) but my question is a little bit different, perhaps more accurately....
3
votes
3answers
896 views

Can I distribute a BSD code with GPL v3 binaries?

I found a GPL v3 licensed library, that I can compile for various architectures and use in the code for a BSD licensed project. This means that I probably have to distribute the binaries with it. ...
3
votes
1answer
70 views

Bundling GCC along with my GPLv2 project

Is it legal to bundle the GCC cross-compiler (tar.bz2 file) along with a GPL v2 licensed ARMv4T processor core on Github? The compiler will extracted during simulations to compile C code for the core ...
2
votes
3answers
209 views

Licensing software that uses a proprietary library under GPL-3.0 without linking exceptions: what are the implications?

NOTE: Changed the person in example from "I/me" to "PersonXYZ" Given, hypothetically: PersonXYZ wrote some software (will refer to as SoftwareXYZ) that uses a proprietary library (will refer to as ...
2
votes
1answer
104 views

How can a paid/proprietary module be combined with an open-source platform?

How could licences be chosen to allow this? As an example, how are things done with paid addons with Prestashop?
2
votes
1answer
149 views

Can Wikidata which runs under CC-Zero incorporate CC BY content?

Wikidata is a database licensed under CC-Zero. If Wikidata would include CC BY content with Wikidata properly labeling the source, would that be okay? Or do third-parties that want to reuse the ...