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 [tag:gpl-3] tag.

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Can I use GPL-licensed software in a commercial program?

Can I use GPL-licensed software in a commercial program? I know that the use of source code in a commercial program is forbidden but if I use system call functions for example I make the call a bash ...
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1answer
502 views

Is it legal to multi-use a 100% GPL theme from ThemeForest?

If you go to the Google search site:https://themeforest.net/item/ This item is licensed 100% GPL, you will find a lot of GPL themes. Is it legal to use a theme which I buy once in multiple sites? (...
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Proper place to include the license of a dependency

I'm developing a GPLv3 project, and i need to use both the feather's icon set, licensed with MIT license, and the PyQt5 library with GPL. I don't need to rewrite or extend any content of the these ...
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1answer
93 views

Does a (L)GPL3 device still need to provide it's original service after modification?

Let's assume I am building an embedded linux device using amongst other things (L)GPLv3 software. The device is sold to non-business users so the anti tivoization clause applies. I want to be ...
2
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1answer
143 views

VLC and VLCJ licenses

I'm confused about the licenses GPL and LGPL. I see that VLC is released under LGPL license since sept 2011: https://www.videolan.org/press/lgpl.html. But VLCJ, which is a Java wrapper on top of VLC, ...
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1answer
44 views

Free Pascal and LGPL

I want to modify this program and compile it using Free Pascal compiler. The above program is licensed under GNU General Public License version 3. I know little about Free Pascal, and reading the FAQ ...
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2answers
1k views

Using a GPL header in a closed source program?

I've recently noticed that some of the userapi linux kernel headers are declared under the GPL. However, I'm pretty sure that you can include linux uapi headers in your code without your project ...
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2answers
119 views

How to benchmark GPL software?

I would like to create a benchmark that compares several open-source implementations of a particular functionality. Some of those implementations carry a GPL license, while others are more open: ...
3
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0answers
78 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 "...
4
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1answer
202 views

Moving project from AGPL to Apache v2 / MIT license

The question in a nutshell Hi! Together with a team of brilliant engineers we've been building a software project (http://luna-lang.org) for the last two years and now we want to release everything ...
4
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1answer
450 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 ...
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128 views

How could other people know that I'm using GPLed libraries in my application?

I know nothing about GPL before, and I am living in a country that doesn't have much care about licenses either. I am studying this GPL thing today and I came to know that when I am using a GPLed ...
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1answer
71 views

Licensing concern for an application?

I'm looking for advice in regards to licensing. I started coding an application in my free time for some months now. It began as coding practice, but as time progressed it got more serious and there ...
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1answer
316 views

Can my thesis LaTeX source files contents be under GPL v3?

I want to release all the LaTeX source files (*.tex), when I publish my thesis. I do not want to just release the PDF. So everybody can build my thesis with a LaTeX compiler from its source code. Can ...
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2answers
356 views

Relicensing from GPL v2 to LGPL v2 - What if I can't contact all 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 ...
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1answer
100 views

How does GPL work for articles on a website?

Suppose I own a website and 3 people are writing articles on the site including myself. My question is whether I can use a GPL license for the articles I write? What happens if I write an article and ...
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1answer
324 views

Difference between GNU-GPL and BSD?

I was wondering what is the difference between these two licenses? I have looked around for GPL but in some places they say you have to post your code to public and in some places they say you don't ...
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1answer
783 views

Can I put ads on a GPLv3 project and upload it to Google Play?

I forked a messaging app on github and added my modification on top of it and it started to build an audience in my country because of the unique ad-on feature I have added. The app acts as an SMS ...
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1answer
398 views

Can I modify and resell themes which are on WordPress official theme directory (100% GPL)?

According to WordPress Licensing & the GPL, themes on the official WordPress theme directory should be 100% GPL: If you wish to submit your creation to the free theme repository on WordPress....
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2answers
288 views

Can I distribute signed binaries of someone else's GPL'd code without distributing the private key?

Suppose I come across Project X on the Internet, which is released under the GNU GPL. I want to compile Project X into a strong-named .NET assembly, which is a type of cryptographically signed binary, ...
4
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3answers
70 views

How does one structure a C# OSS project to be accessible to wide ranging group of developers?

I'm looking at figuring out how to deal with C# projects in open source sanely. Visual Studio is both backwards and forwards incompatible, so everybody in the project has to use the same version, if ...
6
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2answers
229 views

Is it legal to use code from Microsoft Knowledge Base Article in an open source software?

In an open-source software project, GPL2 or 3, is it legal to use code snippets from Microsoft Knowledge Base articles - the ones that used to be called something like Q1234567, nowadays called just ...
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1answer
80 views

The GPL states that its text should be reproduced verbatim. What does this mean?

I made a bit of GPLv2 archaeology for some work I do to help clarify the Linux kernel licensing. In doing so I found at least six versions of the GPL 2.0 texts published by the FSF over the years. ...
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2answers
3k 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 ...
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2answers
299 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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1answer
103 views

Does violating the “four essential freedoms” of the FSF mean you are violating GPL? [closed]

I was reading over a products license information and found out that they use multiple iterations of the GPL license (GPL v2, LGPL, a few more). I was wondering if the product that is licensed ...
4
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1answer
132 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). ...
3
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1answer
215 views

What does the Zstandard dual license mean?

I am looking at the Zstandard library and it says that it is dual licensed, BSD and GPLv2. What does it mean? If I use libraries in a non open source program will the license be GPL or BSD? In the ...
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2answers
40 views

Raspbian as OS of a controller module of a machine

I'd like to use a Raspberry Pi as a controller of a rather complex medical machine. For several reasons, most prominently safety reasons, it is out of the question, that we could give the source code ...
7
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1answer
498 views

What is the purpose of “or (at your option) any later version”? What if I don't want this?

Firstly, what is the exact purpose of the phrase "or (at your option) any later version" that usually accompanies GPL-licensed software? I get that it's supposed to be to allow future freedoms to be ...
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1answer
283 views

If I build a smart bomb with Linux inside, is it enough to put the GPL text in the firmware to comply with the GPL?

If I build a smart bomb with Linux inside, is it enough to put the GPL text in the firmware to comply with the GPL if I drop the bomb? I reckon that when I sell my bomb to the military, they are ...
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1answer
97 views

GNU GPL v2 - Using libraries?

I had a question about the GNU General Public License v2 license. More specifically, I'm using a library with a GNU GPL v2 license. I'm merely importing it in Java through Maven, I'm not ...
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1answer
522 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, ...
2
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1answer
91 views

Is this an appropriate use of the GPL?

I'm currently producing an application for a client, where I'm writing all the source code myself from scratch. The client is paying me a one-off fee for development work. The plan is for the client ...
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1answer
107 views

Explanation about open source codes and licences

I need to understand rules that I only read but never understood completely. I'm asking here some clarifications. I read that GPLv2 licence imposes that a developer, developing a software using codes ...
4
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1answer
280 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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1answer
85 views

Does the GPL/RPL Apply to me as Well? [duplicate]

I want to create a commercial application, but I want to make a significant portion of my back-end open source. It applies some really interesting math that I want people to learn from, but I don't ...
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1answer
559 views

Can I use a GPL component in my site without having to disclose the sources of my site?

In which of the following situations can I use a GPL component in my website without having to GPL or disclose the source code of my entire site? The component is a JavaScript library that goes into ...
15
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1answer
3k views

Using GPL library with MIT licensed code

Let's say I created a project containing hundreds of source files under the MIT License (most of which I wrote myself for this project). Now I want to add a GPL library to the project, that will be ...
0
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1answer
46 views

GNU GPL license for my camera Linux driver

My company manufactured a MIPI CSI2 camera and I have developed a camera driver for that camera. The driver is based on the NXP camera driver. I have changed all the function names and variable names ...
0
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1answer
187 views

Mixing GPL v3 and Proprietary library

My application has two parts GUI and a backend algorithm module. I have used a library under GPLv3 to write my GUI. In the GUI we can create a workflow of different digital signal processing units so ...
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1answer
85 views

Using information from MIT licensed code

I'm currently developing an editor that will implement syntax highlighter for a rather specialized language. I had already found a vim highlighting file that I rather liked the style of, and while I ...
4
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2answers
496 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 ...
6
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1answer
552 views

Distributing commercial Docker container image with openjdk:8-jdk

I am building a docker image with the following dockerfile and then pushing it to an AWS ECR repository: FROM openjdk:8-jdk RUN ["mkdir", "/opt/mycompany"] COPY ["myapp.war/", "/opt/mycompany/myapp....
2
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1answer
41 views

Is sending requests to a server (which uses a model trained by GPL-licensed software) distribution according to the GPL?

I have a software in which I use Weka software to train a model (classifier) just once (without any modification) and save the model somewhere. Then, our customer gives a document to the program and ...
8
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1answer
134 views

Is it OK to upload someone else's code to NPM?

Per user recommendation, this question is based on an SO question. ASX is a cool library I use for some of my projects, but it is not available on NPM. I filed an issue on the GitHub repo asking to ...
2
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2answers
128 views

Do I have to open source a website if I use GPL-licensed blogging software?

My friend is building a website for a school newspaper and we were considering using Instant Press for the stories to show up. Instant Press is licensed with the GPL 2. If we use Instant Press, will ...
2
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1answer
68 views

Do programs that run mplayer have to provide source code according to the GPL?

mplayer is a GPL v2 license. There is a program called a.out that calls mplayer. The a.out source code is shown below. #include <stdio.h> void main(void){ system("mplayer test....
172
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9answers
30k views

I lost the source code for programs I released as GPL. What to do?

I wrote a software utility I released freely as GPL on a separate machine some ten years ago. But the machine I wrote it on is lost, and I can't find the source code on any of my backups. I am still ...
2
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1answer
77 views

What does LGPL point 3 mean?

The LGPL point 3 says: 3. You may opt to apply the terms of the ordinary GNU General Public License instead of this License to a given copy of the Library. To do this, you must alter ...