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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6
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2answers
110 views
+50

Is Apple allowed to distribute GPLv3-licensed software through its iOS App Store?

This question is specifically about GPLv3, LGPLv3, and Apple's App Store for iOS devices. Given the additional restrictions Apple imposes on iOS users (i.e. not allowing them to modify and run GPLv3 ...
10
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2answers
4k views

Can I sell a proprietary software with an LGPL library bundled along with it, without making my source code public?

I am making a commercial application for my own company. I want to use PySide2 in it which comes under the LGPL license. I will be using PySide2 without any modification to it for designing the GUI. ...
3
votes
1answer
50 views

An LGPL library inside a proprietary Android app

Let's consider a proprietary Android app which is using an LGPL library. LGPL requires that the user could be able to replace the library with a modified version. For languages like C, LGPL suggests ...
1
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0answers
18 views

License of QtCore in Qt 5.6: LGPL v2.1 or LGPL v3?

In the headers of QtCore 5.6 it says: -- clip -- ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License ...
1
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0answers
10 views

LGPL v 2.1 + Linking Over Controlled Interface

I use (nrjavaserial) library in a java application. This library is released under the LGPL v 2.1 + Linking Over Controlled Interface license. I have two questions: If the implementation falls ...
1
vote
1answer
67 views

Qt's open source license (GPL or LGPL)

Ive been reading about Qt and its licensing and ive come across this part: Qt is available under different licensing options designed to accommodate the needs of our various users: Qt ...
4
votes
3answers
1k views

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 ...
2
votes
2answers
217 views

What permissions does LGPL-3.0 grant if the licensed work links against a proprietary library?

According to the FSF "The Lesser GPL permits use of the library in proprietary program". Is this permission granted in cases where an LGPL-3.0 licensed work links against a proprietary library? Both ...
2
votes
1answer
82 views

Forking a project with conflicting licenses

I’m forced to work with software that has been given incompatible licenses by its authors. They have created an original API that they’ve licensed under the GNU GPL, but then they implement that API ...
3
votes
1answer
82 views

How can commercial products use GPL or LGPL libraries?

I would like to design a web app with a free and paid tier that will include a WYSIWYG editor. I'm considering the following options CKEditor - GPL TinyMCE - LGPLv3 QuillJS - BSD 3-Clause SlateJS - ...
4
votes
1answer
32 views

Test framework license selection

I am writing some kind of test frame work in Python3. I am about to publish it, I am looking for right license for it... and I am confused :( Here is what am looking for: common/well known license ...
0
votes
0answers
34 views

Which license to use LGPL-3.0, MPL-2.0 or AGPL-3.0 for a library that manages files locally?

I'm open-sourcing a library that tries to make managing local files easier by enabling full text search, encryption, corruption handling & remote transfer/distribution of files. What license to ...
5
votes
1answer
90 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 ...
2
votes
1answer
42 views

How does an LGPLv3 dependency affect an application when sharing the dependent application with others?

Suppose a developer named Peter has an application named AppMIT licensed MIT that has a dependancy on Tony's library named LibLGPL licensed LGPLv3. Please help me understand if the cases below are ...
3
votes
1answer
40 views

Need help understanding GNU LGPL terms

I'm a new developer and recently have to work on project where I guess using arduino lib will be easy, because writing my own library will be a lot more time consuming. This isn't a mass production ...
3
votes
1answer
132 views

Does using libraries under LGPL in my product limit my choice on how to license it?

I am developing a product that links to a number of LGPL (or compatible) licensed libraries. The product itself is a creator tool for intellectual property work of its users. The LGPL libraries are ...
2
votes
1answer
23 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 ...
3
votes
0answers
129 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 ...
-3
votes
2answers
53 views

What happens when I use LGPL Qt 5 toolkit to link statically for a closed source (proprietary) application?

I come from a country "ALGERIA" where nobody buys a software license even the government, except fore rare cases where the government institution is very sensitive, other governmental institutions ...
1
vote
1answer
87 views

Does interacting with a (L)GPL licensed library through PHP7.4 FFI count as a derived work?

Problem description I recently wrote a PHP(7.3) wrapper for accessing some git functionality (I use git to create incremental backups). Another wrapper I wrote is for gpg (to encrypt my backups). ...
1
vote
2answers
45 views

Opensource license for github Python project which uses lgpl libraries

I'm about to make my first Python repo on github public and it needs a license. It imports four libraries, without modifying them, it merely makes use of their functions. These libraries are in ...
1
vote
1answer
47 views

If authors of open source software can be held liable for (accidentally) infringing (vaguely worded) software patents, why add one's name to it?

If person A writes software and says "I wrote it and this is my name", she can potentially be sued by a patent troll who says "I invented the program statement and the variable". If person A writes ...
1
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1answer
27 views

LGPL: Can drivectl utility code be modified under LGPL license?

As driverctl utility is LGPL compliant so what will happen if we change the code of driverctl ? This is a ask from one of the client, so can anyone answer what will happen if we change the code of ...
2
votes
2answers
111 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
1answer
56 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 ...
3
votes
2answers
67 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
62 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 ...
4
votes
1answer
109 views

Can I Commit LGPL3 Derivative Work To An Apache 2 Licensed Project?

I am using a helpful project that is licensed under the LGPL3. I have taken some of the useful code out of it and refactored it into a wrapper class and would like to add it to an upstream project. ...
2
votes
1answer
69 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" ...
3
votes
3answers
748 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 ...
1
vote
1answer
47 views

exe using LGPLv3 lib: must I also ship the exe's object files?

If I ship a closed-source .exe that dynamically links to an LGPLv3 library (such as Qt), must I also ship the .obj files from which I built the .exe? This podcast at 34:30-36:00 claims so, and also ...
3
votes
1answer
71 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 ...
4
votes
2answers
134 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 ...
1
vote
1answer
22 views

Do I have to include a copy of GPL 2 if I'm using LGPL 2.1 (or later)?

According to FSF, to use LGPL in my library, I have to include both the copy of GPL & LGPL. I understand that the reason being LGPL 3 is now written as additional permissions over GPL 3. However, ...
4
votes
1answer
282 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, ...
1
vote
1answer
52 views

GPL/LGPL license: convey source code by linking to original author

Scenario: you distribute your program in binary format, and it uses a GPL or LGPL library. In addition to the required conditions on your part of the application, you must offer a way to obtain the ...
2
votes
1answer
45 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
2answers
104 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 ...
1
vote
1answer
97 views

Can I use an LGPLv3 library in my WordPress plugin

I want to publish a plugin on WordPress. My plugin uses a library which is licensed under the LGPLv3. I am planning to ship the library along with plugin code, however, the library isn't statically ...
6
votes
1answer
129 views

Use of closed-source library in LGPL library

I would like to open source my software library under the LGPL license. But I'm not sure if I'm allowed to use that license, as my library uses another library which is currently closed sourced. By ...
1
vote
1answer
109 views

How do I include GPLv3 code in a LGPLv3 or MIT project

I have no doubt that this question has been answered countless times before, but my searches have not produced an answer yet. I'm writing a library using LGPLv3 and I would like to copy a couple of ...
1
vote
2answers
144 views

Can I use a library that is dual licensed GPL + LGPL as if it was only LGPL?

PaGMO 2 includes both GPL and LGPL in their copyright notices: Copyright 2017-2018 PaGMO development team This file is part of the PaGMO library. The PaGMO library is free software; you can ...
1
vote
1answer
53 views

Can I license a library as LGPL after it has been released under no license for a while?

I've written a C library (minilibc) and at the time of releasing it I was unsure as to what license I was going to use, so I left it unlicensed. I've now decided on the LGPLv3+ and am unsure whether ...
2
votes
1answer
206 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 ...
4
votes
2answers
438 views

Can I use LPGL3 for library and Apache 2 for “main()”?

My project is a command which is split in library modules (the logic) and a "main" module, which glues my lib modules to make the CLI command. I don't really care about what people can write with the ...
6
votes
1answer
117 views

Is monkey-patching considered a modification of the original work licensed under LGPL or MPL licenses?

I'm interested if monkey-patching is considered a modification by LGPL 3.0 and MPL 2.0 licenses. Specifically, I'm interested in monkey-patching of ruby code. E.g. I require an LGPL library (e.g. ...
4
votes
1answer
170 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
votes
1answer
449 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
24 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 ...
0
votes
1answer
279 views

Can i use Qt Virtual Keyboard?

Is this design correct? System Qt 5 has qtvirtualkeyboard thich is GPL. Can I link my proprietary app with system Qt? Can I create open source app which run Qt Virtual Keyboard then load my app as ...