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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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LGPL3 code in GPL3 project

It seems like this should be obvious, but I'm not finding an answer. LGPL is a subset of GPL, IIRC, so can I use LGPL code in a GPL project?
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0answers
34 views

Redistributing LGPL source code or GPL packages on a BSD Licensed package

I have a python project licensed under BSD-License. On its bottom I use a source code written in C++ which is licensed as LGPL and I have an optional dependency on a python package licensed under GPL. ...
2
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1answer
54 views

Licensing LGPL software commercially

We have a mobile app software and we distribute it with LGPL v3. It uses other 2 components licensed under LGPL-v3 and MIT. For our own code, we are have the full ownership (i.e. nobody else have made ...
2
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1answer
58 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. ...
3
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1answer
44 views

Can I use bits of source from another library in an original work without having to worry about license issues?

I've been writing a docking framework in JavaFX. This is a new library with original work. However, I have been reading the source code of a few other open source docking projects to get some hints ...
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2answers
76 views

Can someone explain the basic requirements of Open Source Qt LGPL to a beginner?

I’m a automotive electronic and electrical engineer with little to no software experience. I need to hire a developer to develop Windows GUI application that is used to configure and program a ...
3
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1answer
58 views

What is the difference between LGPLv2.1 and LGPLv3?

Below text is cited from https://www1.qt.io/faq/#_Toc_3_6 LGPLv3 is the current version of the GNU Lesser General Public License. LGPLv2.1 is an older version and not recommended by the Free ...
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1answer
31 views

Redistributing 7-Zip Binaries with LGPL & BSD 3-clause License

We want to use 7Zip to extract the contents of the ISO file in our paid product. There is no other API free library available as of now that can unzip ISO files on all Windows platforms that we want ...
3
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1answer
64 views

Does it make sense to license an application (not library) under LGPL?

Say, I have a game engine which is meant to be an executable, not a library (i.e. it has its' own main() and has the top-level control. It calls on other libraries but cannot be used as a dynamic ...
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0answers
22 views

Which of Qt license files must we include with our open source (MIT) software?

We are using the LGPL version of Qt 4.8 for some components of our MIT-licensed desktop software (https://appleseedhq.net/). In my Qt 4.8.7 distribution, I see at least the following license files: ....
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1answer
138 views

iText 2.1.7 in commercial Project

This question was originally asked on StackOverflow but since licensing questions are off topic I move it here. So here comes the original question about this open source library: I want to use the ...
4
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1answer
636 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 ...
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1answer
29 views

Is the Qt Network Authentication module LGPL?

The documentation is unclear whether the QT Network Authentication module is licensed under LGPL or GPL. Has it changed recently?
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1answer
51 views

What are my license options for releasing code I derived from code that was released under LGPL v2.1?

If I take some code that was released under LGPL v2.1 and make modifications to it, what are my options for releasing that derived work again as open source? I guess, one option would obviously be to ...
3
votes
1answer
43 views

Subclassing, Unity, and the LGPL

I want to release a package on the Unity Asset Store. Based on this answer, it looks like the best option for my situation would be LGPLv3. However, after doing plenty of research, I've stumbled ...
1
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1answer
55 views

Can LGPL 2.1 licenses software be re-published under GPL 3.0?

I have software licensed under LGPL 2.1 and I want to modify it and re-publish the whole software under the GPL 3.0 license. Is this legally possible? I think so, but I'm not completely sure. LGPL 2....
2
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1answer
45 views

Query on distributing Application under Apache 2.0 license which dynamically links with LGPL2.1 shared libraries

I'm writing some C++ code which I might eventually like to release under an Apache v2.0 license. I'm looking to build the application linking to some of the LGPL v2.1-licensed shared libraries from ...
0
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1answer
242 views

Can I use GPL 3.0 or LGPL licensed libraries in my commercial closed source IOT product?

I am building an IOT product, an home automation solution, where I am using ESP8266 Arduino Core that is LGPL-2.1 and also few libraries which are GPL 3.0 licensed. For security reasons I do not ...
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0answers
56 views

What happens when someone merges Apache 2.0 and LGPL libraries into a GPL-2 derivate?

I used a PHP library, which in turn is elementary based on libraries published with an Apache 2.0 license and a LGPL license. The author himself has published his library under a GPLv2 license. ...
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0answers
65 views

Building programs using qmake

Can I use qmake to build Non Qt programs with a closed source or MIT licence? The c++ code that I'm building does not include any Qt headers or link to any Qt libraries. The only mention of Qt in ...
4
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1answer
35 views

Is it more accurate to compare CC BY-SA to LGPL rather than GPL?

CC BY-SA, LGPL and GPL are all copyleft licenses. GPL's key feature is that by embedding one work in another (as defined in a software context), the combined work becomes GPL. With LGPL this is not ...
0
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1answer
88 views

Can I use code from an LGPL v2 licenced project in a BSD 3-clause licenced project?

There is a BSD 3-clause open source project I would like to contribute to. The code I would like to contribute is code that I do not own from an open source library released under the LGPL version 2. ...
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0answers
73 views

libquadmath in binary code

I'm developing a small closed source library in C++ for a small company using gcc. For the numerics part I need 128bit floating point arithmetics. This leads gcc to pull in libquadmath. As far as I ...
0
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1answer
38 views

Concatenating LGPL code

I want to reuse some LGPL'ed code in a commercial piece of software. Said code is here if you're particularly interested. However, the library itself (written in JavaScript / CSS) has been split ...
1
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1answer
168 views

LGPL 2.1. Attributions required?

I'm about to release my LGPL 2.1 licensed java/maven project where I have a dependency to a 3rd party jar also licensed under LGPL 2.1. I've also copied and modified some of the 3rd party project into ...
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1answer
83 views

Publishing Java project with LGPL licensed module

I have a Java project made by multiple JARs and one of them is LGPL licensed. I know that this kind of license doesn't propagate through the modules that uses it. But every code modification that I ...
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1answer
105 views

LGPL 2.1 snippet copyright attribution

I want to use portions of code from the FFMPEG library to provide screen capture function for a commercial application I'm writing. I do understand I need to make a shared library out of the function ...
3
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1answer
62 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
votes
1answer
85 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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2answers
432 views

Bypass LGPL license using wrapper library

I wanted to use a library which is licensed under LGPL (free, only for open source projects). I wanted to use that in a commercial project. Is that possible that I can develop an open source wrapper ...
2
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0answers
109 views

Does an application linking to an unmodified LGPL-3 library need to be debugger-friendly?

I currently work on a proprietary, closed-source software suite, which is distributed to customers as part of a larger package (including various hardware and services). The software suite uses LGPL-...
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1answer
35 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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1answer
40 views

choose between open-source or close source

if hypothetically I have developed special software, and I only want author recognition for it (leaving money aside) can i choose to distribute my creation as open source without other people usurping ...
4
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1answer
202 views

LGPL-licensed code reuse in MIT-licensed project

I have an MIT-licensed (in plans, currently it's not published) project. And I've found an implementation of the required algorithm in an LGPL-licensed project. Am I allowed to include that code in my ...
2
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1answer
179 views

How to write additional permission for LGPLv3 license

I’m planning to release my code under LGPLv3 license but I can’t find answers to several question. Let me describe my situation: I’ve created library and want to use LGPL v3 license for this code; ...
3
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2answers
204 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 ...
1
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1answer
74 views

can I remove files and folders in a PHP package without violating its license?

Let's say I'm working on a PHP application and I want to integrate some PHP packages like TWIG. Using Composer or some other automated management or code assisting technologies is irrelevant here. All ...
4
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1answer
163 views

GNU Lesser General Public License with signed C# assembly

We have a closed source software written in C# that we sell. All of our assemblies are signed. We want to use a third party assembly, that is published under the GNU Lesser General Public License v2.1....
1
vote
1answer
78 views

Is the Epson license Open Source?

I plan using this library https://github.com/endlessm/epson-inkjet-printer in a commercial product. The licensing conditions for it are the following: This program is distributed under GNU Lesser ...
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2answers
608 views

What is the difference between an open and closed consumer device?

The Qt Open Source Licensing Obligations contain the following line: Must make “open” consumer devices What does this mean? I know about the linking mechanism required by LGPL, and that part of ...
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1answer
73 views

Can I obtain a source code for RGSS1/RGSS2, assuming it contains LGPL part?

RGSS1/RGSS2 is a game engine for RPG Maker XP and RPG Maker VX. The binary of them consist of two files: Game.exe ... It's about 100KB and seems to be a mere loader. RGSS104J.dll ... It's about 800KB ...
0
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1answer
466 views

Can I use the Qt Installer Framework in a commercial product?

The Qt Installer Framework (QTIFW) is part of the Qt Framework which is available under the LGPL3. This page lists the components that are available under each license. Unfortunately it doesn't list ...
3
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1answer
68 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 ...
3
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0answers
55 views

Creating a wrapper library for LGPL code and distribute the used LGPL code as its own library?

I've been working on a proof of concept prototype for my company. The libraries for the board I've been using are licensed under the LGPL. We've been happy enough that we're now considering using this ...
5
votes
1answer
72 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 ...
3
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2answers
88 views

Are there legal issues with bundling one's own LGPL-licensed code with proprietary code?

My company's legal team is currently worried about how to move forward with some app releases intended for our enterprise customers. Here's the gist of it: We have many products referred to as "apps"...
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1answer
255 views

Licenses PyQt and QT

I would like to use PyQT5 and QT5 to create an -internal- application for a friend and his company. I would like to use PyQT GPL license and QT LGPL license. To respect these licenses, I need to: ...
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3answers
1k 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 ...
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1answer
156 views

Ethereum's source code

Am I correct to assume that I can copy Ethereum's source code, modify it to create my own blockchain and issue my new currency, without any problems provided that I follow GPL and LGPL?
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1answer
67 views

Does inbound=outbound apply to GPL-family without a CLA?

The traditional expectation for contributions to a free software project are "inbound=outbound" [1] [2]. That is, if the project is under license X, contributions are made under license X. Does this ...