Questions tagged [lgpl]

Use this tag for questions about the GNU Lesser General Public License, how to apply it, or how to re-use works under this license

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8
votes
2answers
449 views

Redistributing LGPL 2.1 code compiled by a proprietary compiler

Can I redistribute the binary form of someone's LGPL code compiled with a proprietary compiler which is not included in the operating system? LGPL 2.1 says: For an executable, the required form of ...
2
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2answers
78 views

Contracting Around LGPL

A client of mine wants to static link its proprietary commercial work to a library that is licensed under LGPL that is sold by VMime in France. VMime's website purports to explain that the purchaser ...
9
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2answers
1k views

Can I dynamically call a LGPL/GPL software in my closed-source application?

This question was originally posted by marcgg on Stack Overflow (second link might be visible to 10k+ only), but was removed there due to being off-topic. It has been preserved here in light of this ...
6
votes
1answer
694 views

Can I use/distribute LGPL command line software in mine that isn't LGPL?

I've developed a little software that use FFmpeg in command line mode. To further clarify: My software launch several times ffmpeg.exe that is stored inside the same folder as my .exe. User never ...
6
votes
1answer
378 views

LGPL3 library in Apache 2.0 licensed library

Can I open source my project under Apache 2 if it uses a LGPL3 library without modifying it? I'm not planning to distribute the LGPL3 library along with the code. My understanding is that LGPL3 ...
3
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2answers
2k views

GPL, LGPL or MPL for open source app with closed source Pro flavour

I have had a fairly popular Android business app on Google Play a while now. It is available as a free version and a version with features targeted to bigger businesses. I am currently in the process ...
3
votes
1answer
83 views

Does it make sense to have a program under the LGPL?

A little background: I have a library project which I put under the LGPL v2.1. However, I have two applications inside the project tree using the library. It would be somewhat inconvenient to make ...
3
votes
1answer
1k views

Is it possible to make closed source code while using the following libraries?

I am not good at Licensing issues. So my question - If my program is using these libraries (only linking like -ludev, -lblkid, -lcrypto, -lssl, -fopenmp) - libudev (LGPL version 2.1 of the License, ...
2
votes
1answer
55 views

Complex mix of licenses for stand-alone installer, and the softwares it installs

I'm writing an installer for some softwares, and wish to make the installer stand-alone, i.e. everything baked into a single executable. One of the softwares that are installed has GPL 3, built from ...
1
vote
1answer
51 views

What license to use while using GPL/LGPL source code?

There is an application A. It uses the GPL license. There is another application B that takes all of A's code and improvises it. In its repo, both GPL and LGPL license can be found. We are building an ...
3
votes
1answer
99 views

What exactly is terminated by the breach of LGPL?

One of dependencies of a game engine that I'm using has an LGPL license. If I, for some reason, forget to upload the license file, do I lose rights to my own part of the code that isn't GPL? Likewise,...
4
votes
2answers
244 views

What's the closest to GPL3 I can get while staying compliant with the EPL and APL?

The Eclipse Public License and the GPL (2 or 3) are not compatible. [ ... ] you may not combine EPL and GPL code in any scenario where source code under those licenses are both the same source code ...
0
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1answer
156 views

Would I violate anything if I use vlclib for android in my closed-source app?

I'm developing a video player and I want to use vlclib for android for better codec support. I have some questions in mind regarding use of the library in my project. Would I violate anything if I ...
9
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2answers
1k views

Own LGPL code in proprietorial project

I've written a library that I use in closed-source project. After a short discuss with my boss we have decided that this library can be useful for many others and we made this library open source ...
1
vote
1answer
76 views

If I distribute amazon AMI with my service that calls LGPL software, do I have to provide source code?

I have a question about licensing, and because my legal English isn't really strong, I was hoping for a simple answer... My idea is to create a set of services, that uses command line programs which ...
6
votes
3answers
2k views

Do I need to host Qt source when compling with LGPLv3 license?

We are using Qt(5.3.2 - opensource) for one of our applications that we are going to be distributing (closed-source). We dynamically link to Qt and have made no modifications to Qt. At Qt's Legal ...
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 ...
6
votes
3answers
720 views

iOS application using LGPL library

I am integrating an LGPL application to my iOS application. I am modifying the LGPL application in such a way that, I am integrating a new library to it. So the flow is like this: Appl Code >> LGPL ...
6
votes
2answers
298 views

Taking a clone of an LGPL licensed source code and modifying and maintaining in a private repo

We started to use an open source library in one of our projects, and now we need to do some custom modifications to this library. The source of this library is distributed under LGPL and I need some ...
5
votes
2answers
243 views

Pull request ownership, who owns the code committed?

Say I create an Open Source project on Github licensed under e.g. LGPL like Qt. As I understand ownership of code, if I wrote a piece of code, I am free to change the license at a later point, as long ...
0
votes
2answers
268 views

Can I use Stack Overflow code by creating a LGPL library of code snippets first and then linking to that library?

All code posted on Stack Overflow is currently licensed under CC-BY-SA. If the code crosses the "threshold of originality", you have to distribute your whole project under a copyleft license. This may ...
1
vote
1answer
77 views

Are YouTubers Allowed to Record any Game [closed]

For games like minecraft it is released under "LGPL 2.1 or later", does this mean that if you record Minecraft the video must also be released under the LGPL 2.1 or later? Is a separate license ...
7
votes
2answers
2k views

Using GPL or LGPL licensed framework for web application

I am developing a web application which streams videos. For the frontend I intend to use the richfaces framework for jsf. That framework is licensed under the LGPL v2. Does that mean that I have to ...
4
votes
1answer
290 views

What license should I release my code under? It contains FFmpeg binaries, code from NAudio and code from FFmpeg.Autogen

I want to release my WPF Media Element based on FFmpeg on GitHub. I want to be as permissive as possible. I believe that this control could be of great help to a ton of people. Here are the links to ...
2
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0answers
36 views

How is the LGPL different from the GPL with a class path exception? [duplicate]

As far as I understand, the GPL is a license with an incredibly strong copyleft trait. That is, anything that even links to it, let alone modify it, needs to be released under the GPL. Due to this '...
4
votes
1answer
96 views

Am I allowed to make use of parts of the codebase of a library that is licensed under LGPL (v2.1)

For a game engine I am writing, I am planning to use a heavily cut down and thoroughly modified version of the Java logging library logback. Basically I am using their code for lookups and ...
12
votes
2answers
471 views

Are derivative works a subset of combined works?

This question stems from discussion of a question on programmers.stackexchange.com. In the LGPL 3.0 section 4 "Combined Works" it states: You may convey a Combined Work under terms of your choice ...
13
votes
5answers
691 views

Appropriate licence for later merging back

I am a library developer. I want to open source it soon, but I'm not sure what license will work best for me. My main concerns are: I want to provide a commercial license for somebody who is willing ...
8
votes
2answers
927 views

Is it possible to use a library under the EUPL license for a commercial closed-source project?

I want to use this library in my project. Author says it is under the LGPL license, but one of its dependencies is under the EUPL license. EUPL license isn't clear about if a closed-source ...
16
votes
1answer
2k views

What is the difference between GPL + Classpath exception vs LGPL

Java and a few java libraries provide a "classpath" exception. To me, this seems similar to the LGPL's linking exceptions. What is the difference between the GPL with a classpath exception and the ...
7
votes
2answers
896 views

Which standard copyleft licences can be applied to Unity assets?

I would like to release a framework for Unity under a copyleft licence but have some concerns. My goal is for people to be able to use the framework to develop their own projects and only be required ...
4
votes
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 ...

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