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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136 views

Does distributing GPL software along with binary image force the binary image to be GPL too?

So: A hardware device has closed-source firmware running inside it (not based on any open-source code). Computer software to update the hardware's firmware exists, with a GPLv3 license. It takes a ...
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2answers
207 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 ...
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2answers
372 views

Using GPL library in unit test suite of open source library?

Suppose that: I have an open source project with a permissive license (MIT or Apache); This project builds two targets: A library object code file that other, dependent programs would link to; An ...
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1answer
181 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 ...
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1answer
60 views

Can I release an Excel Workbook with VBA code under the GPL v3?

This is my first foray into the open source world. I've got a Microsoft Excel workbook that I have some custom VBA modules in that I want to distribute under the GPL v3. I can't find much discussion ...
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1answer
101 views

GPL Application linked to a LGPL library loading proprietary-plugins

This is a bit similar to what asked in this question, unless that here the case is that the application only directly loads LGPL code, and this one then may dlopen a proprietary lib, so: GPL Program ...
5
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1answer
483 views

CLA as an exception to the GPL

If it is true that GPL exceptions can be made to apply to some individuals and not others, could the author of an open source program avoid the hassle of asking contributors to sign a Contributor ...
5
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1answer
101 views

Providing license text on a display-less system

We are building a display-less system, which interacts with the user only through an audio interface (and some buttons). Our system is based on Linux, and as such we are using several GPL/LGPL ...
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2answers
324 views

Shouldn't LGPL v3.0 provide exception to section 5 (instead of section 3) of GPL v3.0?

Taken from section 1 LGPL v3.0 (https://www.gnu.org/licenses/lgpl-3.0.en.html): You may convey a covered work under sections 3 and 4 of this License without being bound by section 3 of the GNU GPL. ...
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1answer
636 views

If software requires a modified (linux) kernel to function, is it considered a derivative work of the linux kernel?

I'm writing a userspace driver which requires some modifications to the Linux kernel to function. The modifications expose new functionality by the sysfs interface. I understand that the ...
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3answers
177 views

Would this scenario be considered “propagation without conveying” according to the GPLv3 terminology?

I have a fancy software "foo" that may be considered the derivative work of a GPLv3 library. "foo" is GPLv3 itself. Example 1: I install the foo binary on my company's laptop, go to a customer's ...
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2answers
224 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 ...
5
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1answer
87 views

Can I redistribute image containing GPLv2 and Apache2.0 software(packages) on Docker Hub?

I want to redistribute an image containing MySQL and Apache httpd. However, MySQL is GPL-2.0 licensed and Apache httpd is Apache-2.0 licensed. The two licenses are known to be incompatible. Do I have ...
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1answer
210 views

Splitting a project into copyright and copyleft

Say I've been working on this java project for over a year, and it's necessary for this project to reference a GNU GPL licensed software library somewhere in there, then the whole thing suddenly poof ...
5
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1answer
59 views

Does GNU Classpath exception allow me to take parts of the library, link with them and distribute the resulting executable on my terms?

GNU Classpath exception says I can link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the ...
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2answers
1k views

Combining GPL with non-commercial license

I've been a hobbyist programmer for a long time, and only recently have I been writing code I've thought others might benefit from. Here's my conundrum: I'm a big supporter of the GPL, and I ...
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0answers
45 views

Deriving from a GPL LaTeX package

Would it be against the GPL to publish a work (eg. a preamble) that has a dependency on both GPL and LPPL packages? The LPPL is not GPL compatible. Could I argue that the LPPL package is a system ...
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6answers
865 views

Why don't BSD developers use the SSLeay addendum if they hate GPL?

It's not uncommon to see BSD developers upset that someone takes their project, does a few modifications, and then releases the resulting work under GPL, such that the resulting improvements can no ...
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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 ...
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3answers
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Can GPLv2 licensed software be re-published under LGPLv2.1?

I have read Can LGPL 2.1 licenses software be re-published under GPL 3.0? and followed link to GPL license compatibility matrix in the GPL FAQ, which is confusing me a bit: If I understand the table ...
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3answers
1k views

How can the Linux kernel's main.c file say that one of its copyrights is “all rights reserved” when it's GPL?

Just noticed this in the linux's kernel code main.c: * Copyright (C) 1991, 1992 Linus Torvalds * Copyright 2007 rPath, Inc. - All Rights Reserved * Copyright 2009 Intel Corporation; author H....
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3answers
500 views

Implications of using GPL licenced code only during testing

Let's say I'm working on a software library in which certain unit tests rely on GPL licensed code but the code that a user of this library would install on their system does not interact with GPL ...
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2answers
219 views

What stops anyone from taking a derivative of a derivative of a GPLv2-licensed work closed-source?

What prevents the following situation? Alice writes Alice's Great Open-Source Program and releases it under the GPL. Bob creates the derivative work Bob's Great Open-Source Program With Racing ...
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3answers
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If I release software under the GNU GPL v3, and a new version of the GPL is released, can I change the license?

If I release software under the GNU GPL v3, and a new version of the GPL is released, can I change the license to the new version if I choose to without having to say "GNU GPL v3.0 or later"?
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2answers
366 views

Including resources with ambiguous license for GPL application

I'm creating a GPL v3 application. I've found some graphics on www.flaticon.com that I would like to use in the application. The application will be distributed as binary, but with the resources as-is ...
4
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1answer
321 views

GPL vs. obligatory warranty

There are many countries on the world, where distributing products means to accept an obligatory warranty well. More clearly: if you buy a mainboard, and it is bad, the seller must re-take it (with ...
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2answers
126 views

Preventing a company in GPLv2 license

Is it possible to prevent a specific company or specific employee in that company from using an open-source project that uses GPLv2 license? To give more details, the project is based on another open-...
4
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2answers
224 views

Can library that took parts of library licensed under GPL with Classpath Exception be licensed under MIT?

I've spotted the library (library M) where developers took some source files from GPL with Classpath Exception licensed library (library G), included them in their project and changed namespaces and ...
4
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1answer
786 views

Do Contributors Own Copyright After Sending Contributions?

I have a GitHub repository which its license is GPL. Although of this, in the "about" window of my program, I mentioned that I own the copyright (like this: © My name, 2017). And I added the GPL text ...
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2answers
2k views

Is a Web application “released” in the sense of GPL?

In the sense of GPL, is a Web application running on a private server without exposing its code considered "released"? (or is the word "distributed"?) Therefore, if a GPL component is used in a Web ...
4
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2answers
222 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 ...
4
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3answers
545 views

Usage of GPL program as optional external tool

My software is designed to use third-party external tools if the user wishes to do so. Some users would like to use GPL-covered binaries as external tools (i.e. they tell my software "use this dll to ...
4
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1answer
189 views

How to best deal with email suggesting an attempted/pending gpl violation

I received the email, reproduced below, requesting a new feature in one of my gpl programs, which this company would then build into one of their closed-source products (see the email for details). ...
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2answers
776 views

Distribute virtual machine image with gpl code

I have developed a C++ tool and I am the full copyright owner of the code. However the tool is dynamically linked to a gpl library. The whole source code of the tool is hosted on a virtual machine. In ...
4
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1answer
91 views

Can I change the copyright holder name and year of an MIT license?

Can I change the copyright holder name when using a project of MIT license ? Example: Changing 'john' to 'Justin' in below license ? Copyright 2018 john Permission is hereby granted, free of charge,...
4
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2answers
178 views

Proper use of Wikipedia code sample in open source projects

Many Wikipedia articles contain code or pseudocode samples. I implemented a pseudocode snippet in a concrete language and am planning to use it in one of my projects. There's another question on here ...
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1answer
598 views

Are there any AGPL-style licences that require source code modifications to be public?

So my understanding of the AGPL, is that it requires modifications to be distributed to the users of the network service, but I'm looking for a licence that would require any modifications (non-...
4
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2answers
121 views

Release GPL/Open version of project, still sell proprietary license?

Having witnessed projects such as LUFA, which are open source with the MIT license but still have a purchase button for a proprietary license of the toolbox (revoking the MIT License and offering ...
4
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3answers
811 views

How I can monetize GNU GPL product developed (and currently updating) by me?

I am a developer of Open Source product under GNU GPL license. I always looking for some time and power to make important changes in it (fix bugs and add more improvements), however, it becomes harder ...
4
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2answers
1k views

GPL for Embedded

I'm working in a company that develops and sells embedded systems. We are using Linux and some GPL software, alongside proprietary software. Some of the GPL softwares are modified to fit our needs. ...
4
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2answers
773 views

Is it sufficient for using GPL-licensed code to add a note that the source can be requested via email?

My company is about to launch a commercial product, said product consists of an embedded Linux computer running custom software and talking to custom hardware. My understanding is that the GPL ...
4
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1answer
243 views

Double licensing my GPLv3 project without having a Contributor License Agreement

Suppose I start a GPLv3 licensed project. I take care of pasting all the license text is in the LICENSE.txt and set up a reference to it on top of every source file. I do not exhibit any ...
4
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1answer
60 views

Etiquette for incorporating someone else's MIT code in my GPL project?

I'm relatively new to open source, esp. in terms of collaboration, etiquette, etc. I am working on an open source library in the scientific/numerical programming domain, licensed under GPL. There are ...
4
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2answers
177 views

Is it possible to liberate source code through double-licensing changes?

Let me describe the situation: there's an old piece of software (a game) with source code publically available. Source code was (officially, legally) released with following non-free license: The ...
4
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1answer
1k views

Using a GPL V3 library in a Android app published on Google Play, do I need to release the application's source code?

I'm in a situation where I'm considering using a GPL V3 library in a module of an Android application. The application will be published to Google Play and will be available for free download. My ...
4
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2answers
206 views

AGPL-like license for datasets

Is anyone aware of (work towards) a license with similar freedom-preserving restrictions as the AGPL, which can be applied to datasets? Some background: The GPL puts restrictions on the legally ...
4
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1answer
180 views

What happens when a GPL licence is changed to a LGPL?

I'm using an open source library under GPL in a closed source project. If the libraries license changes from GPL to LGPL, does it mean the previous code (written when the library was GPL) should be ...
4
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1answer
73 views

Can a GPL-licensed library be used in private development builds of a proprietary application?

I'm considering using this GPL-3.0-licensed library as a development aid in a game. Development builds that include this library (and other unrelated tools) would be used by myself and any parties ...
4
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1answer
1k views

Is dual licensing a software that contains gpl programs possible?

I have seen that there is a question about gpl and dual licensing, but I know copyleft can behave different depending on the shape of the software. so here's my question: I have a package of lua ...
4
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1answer
411 views

Is GPLv3-only compatible with GPLv3+?

Suppose I'm working on a GPLv3-only project, and find some code licensed as GPL3+. Can I incorporate that code freely in my software without changing my license? If a hypothetical GPL v4 is released, ...

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