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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votes
1answer
121 views

LGPL licensed software distributed with cx_Freeze

I am developing a python GUI for my company using PySide which is under LGPL license. My company would like to sell it and thus it can't be open source. From my understanding of the LGPL, I need to ...
3
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3answers
731 views

LGPL HDL in larger FPGA design

There is a project called NetFPGA that has HDL code for various Ethernet uses in an FPGA. The project is listed as LGPL. From a software perspective, my understanding is that if you dynamically link ...
3
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1answer
76 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
47 views

Is the Qt Network Authentication module still LGPL?

I saw this question asking if QT Network Authentication module is licensed under LGPL or not. The answer states that since this module is not specified under Add-ons available under Commercial ...
3
votes
1answer
99 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 ...
3
votes
1answer
551 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 ...
3
votes
1answer
311 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....
3
votes
2answers
217 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"...
3
votes
1answer
725 views

Does compiling a JS bundle with webpack/browserify violate the LGPL license?

According to the LGPL license, you must release your source code if you statically link a library. Here's an excerpt from tldrlegal.com: If the software is statically linked (i.e. compiled into) ...
3
votes
2answers
43 views

If I wrote software using QML and the community version of Qt, am I required to disclose the source code of the whole software?

Let's say I made an application using Qt's QML language and I didn't have a commercial license, am I required to disclose the whole source code for said application or just the modules I modified (if ...
3
votes
1answer
50 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 ...
3
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2answers
2k 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 ...
3
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1answer
505 views

LGPL static linking

I know there are already many other questions asked about LGPL requirements, but none of those did match my case I want to distribute a free application which uses a LGPL-licensed library (Qt) ...
3
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1answer
87 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,...
3
votes
1answer
48 views

Legal consideration before development of a FFMPEG filter using named pipe for I/O to any forked program and

I would like to develop a ffmpeg filter to have an easier and better integration of the ffmpeg functionalities in case of complex command lines. Imagine an ffmpeg command line in which you can ...
3
votes
1answer
115 views

How To Package A Basic PySide2 Desktop Application Under LGPL For Sale - EXAMPLE PLEASE

What does a PySide2 (Qt for Python) desktop software application for Windows, Mac or Linux need to be distributed with in order to comply with LGPL license requirements? I'm talking about a simple, ...
3
votes
1answer
299 views

License for open source application based on Qt

I'm developing an free and open source application that uses Qt. I'm not making any changes to Qt library itself. I wanted to know: On what license can I publish my application sources. On what ...
3
votes
1answer
23 views

Does using a GPL v2.1 as a resource in studying count as derivative work?

I came across source code for an AI that plays some classic video games. It's licensed as: GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, I understand the Gnu license pretty well and if I were to ...
3
votes
1answer
126 views

About using GNU GPL 2, GNU GPL 3 and LGPL software in a commercial product

I build a commercial product, which uses some third party products licensed under GNU GPL 2, GNU GPL 3 and LGPL. I do not modify myself the source code of these third party products and I do not ...
3
votes
1answer
110 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 ...
3
votes
1answer
118 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 ...
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
208 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-...
3
votes
2answers
355 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 ...
3
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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, ...
3
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0answers
60 views

Can I use (statically or dynamically linked) mingw-w64 runtime libraries for commercial purposes?

I'm planning to use mingw-w64 for commercial software and I'm looking for info about it's licensing. I was looking through licenses included in package and some discussions on forums and mailing lists ...
2
votes
1answer
428 views

Do I need to provide build/install instructions for LGPL-2.1 or AGPL-3.0 licensed libraries?

We have a Java project which uses a couple of libraries licensed by LGPL-2.1 and uses MongoDB which is licensed by AGPL-3.0 as its database. We don't modify any of them. Our legal team claims we ...
2
votes
2answers
103 views

Working around GPL Restrictions

I am currently looking at ways to circumvent the limitations imposed by LGPL licences. The software I am planning to use is LGPL and is mostly used in the UI side. The idea which I am thinking is to ...
2
votes
2answers
67 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 ...
2
votes
1answer
44 views

If a library is LGPL licensed, can the creator impose additional usage limits?

Example: A programmer produces a library. They release that library under the LGPL and provide full source code. The programmer wants to monetize their product as well. Rather than offering a "pro" ...
2
votes
1answer
58 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 ...
2
votes
2answers
42 views

Proper License for Ritchie Stock Exchange, Proprietary Algorithms, and Algorithmic Trading?

A little context for this question: I'm building an alternative stock exchange (ATS) named "Ritchie". It is based on "The Open Source Way," and I'm trying to decide on the proper license. http://www....
2
votes
1answer
94 views

How can Qt charge for a commercial license without getting copyright assignments from contributors?

As I understand, if the copyright holder accepts external contributions under GPL / LGPL, they are no longer the sole copyright owner and cannot charge for a commercial license. Or does this only ...
2
votes
1answer
176 views

Can your MIT library use an LGPL library?

If you use a library with LGPL 2.1 license (e.g., PHPMailer) in your also open source library, can you release your library as MIT license if you didn't actually modify PHPMailer? E.g., All you did ...
2
votes
1answer
911 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 ...
2
votes
1answer
48 views

Community and enterprise editions of LGPL software

Red Hat has community and enterprise editions of it's application server. WildFly is licensed under LGPL. JBoss EAP is based on WildFly and costs a lot of money. How is it possible that they don't ...
2
votes
1answer
72 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
votes
1answer
80 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 ...
2
votes
1answer
54 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 ...
2
votes
1answer
13 views

LGPL v3.0 and how it relates to wkhtmltopdf in a SAAS scenario: what are our obligations?

We would like to use this library https://github.com/SebastiaanKlippert/go-wkhtmltopdf to generate PDFs from HTML. That library is licensed under MIT. It is really nothing more than a wrapper for the ...
2
votes
1answer
138 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 ...
2
votes
1answer
174 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, ...
2
votes
1answer
80 views

Are the terms of LGPL 3.0 already covered by GPL 3.0 aggregate definition

Are full terms of LGPLv3.0 already covered by GPLv3.0 section 5 under the terms of an "aggregate"? A compilation of a covered work with other separate and independent works, which are not by ...
2
votes
2answers
76 views

Licensing questions

I've been developing a Django app for my work (scientific stuff), and I'm planning to release it on GitHub very soon. But I do have licensing questions to be sure to do it right. This work is ...
2
votes
1answer
30 views

Call MS-PL library in LGPL code

I am currently developing a small desktop application. I am looking for a license that guarantee : That the code cannot be sold, and must be freely distributed. That modifications of the code cannot ...
2
votes
1answer
118 views

Do I have to include attribution and license files for an LGPL-licensed library together with a “work that uses the library”?

I am making use of a library licensed under LGPLv2 in a proprietarily licensed closed-source project. Specifically, I am dynamically linking my commercial C++ program to a C++ library that is itself ...
2
votes
1answer
467 views

Copied code from LGPL library to my executable (what copyright notice should be? LGPL or GPL?)

I have a program containing only one file: main.cpp. I copied there a few lines of code from LGPL licensed file (from an LGPL licensed library). What copyright notice should I put at the top of my ...
2
votes
1answer
88 views

What can a patent troll win by suing an open-source foundation e.g. GTK foundation?

Do open-source foundations have oodles and piles of cash lying around for patent trolls to scoop up? Are open-source softwares licensed under the GPL not immune to patent trolls since there is no ...
2
votes
0answers
185 views

FFMPEG License as a separate library

I am currently writing a video project using FFMPEG shared library with other license abiding projects (like libass and freetype2). I have a script that compiles FFMPEG and the other libraries as a ...
2
votes
0answers
81 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 ...