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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1answer
25 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 ...
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2answers
36 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 ...
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1answer
47 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
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1answer
25 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
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2answers
331 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
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1answer
82 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
62 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 ...
2
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1answer
97 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
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1answer
17 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
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1answer
29 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 ...
5
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1answer
80 views
LGPL license in a concatenated JS file
I came across an old project in which there's a LGPL licensed JavaScript code was used. The code had the commented LGPL license information, but it was in a combined JS file (Not minified though) ...
2
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1answer
68 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 ...
4
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2answers
63 views
Alternative implementation of an LGPL library
Is it possible to write alternative implementation of a library which is covered under LGPL 2.1 and keeping the same API ?
The alternative implementation will be in the closed source.
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1answer
48 views
Is LGPL compatible with GPLv3?
If I have a project using LGPL (GNU Lesser General Public License), would I be able to use within it another component which is under GPLv3?
Is there any site where I can see all the compatible ...
2
votes
1answer
98 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 ...
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0answers
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Is deleting a file under MPL 1.1 is a license violation? [duplicate]
I have an open source code repository under MPL 1.1/GPL 2.0/LGPL 2.1.
My question: is deleting a file is a license violation ?
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1answer
86 views
Is using LGPL 1.2 or EPL 1.0 licensed jar allowed in proprietary software in Docker?
I am creating a proprietary java application which uses some open source jars licensed with LGPL 2.1 or EPL 1.0. I am deploying the application in docker container with all jars inside it.
Is there ...
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1answer
43 views
Can I use LGPL 2.1 licensed java jar without disclosing my complete source code
I am working on a proprietary java application. I want to use a java library licensed LGPL 2.1. One condition of the license is to disclose source code. What does it exactly mean? Do I need to ...
0
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1answer
43 views
Is it legal to create an auto-extractible SFX archive containing mixed commercial/LGPL software?
I wondered something :
- I develop a little standalone tool for a commercial application written in C++ with Qt (lets say "test.exe")
- Not having a commercial licence of Qt, I use Qt LGPL license
- I ...
0
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2answers
87 views
Am I allowed to provide compiled binaries of open source libraries?
I have a project which is open source. I use the gstreamer library in my application. Can I distribute my application on github and provide a compiled version of gstreamer with it (so users dont have ...
2
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0answers
137 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
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1answer
259 views
Using Qt Designer to create UI design for closed source application
Am I allowed to create a closed-source application using the LGPL licensing scheme for Qt if I use Qt Designer to generate its user interface?
I originally thought this was possible until I saw this ...
3
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1answer
59 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 ...
0
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1answer
33 views
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
62 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
66 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 ...
4
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1answer
359 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
votes
1answer
48 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
368 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
votes
1answer
705 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
69 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 ...
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1answer
82 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
46 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
695 views
iText 2.1.7 in commercial Project
This question was originally asked on Stack Overflow 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
831 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
63 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
56 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
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1answer
78 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 ...
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1answer
185 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
votes
1answer
101 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 ...
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1answer
545 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
117 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
99 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
votes
1answer
57 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 ...
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1answer
334 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
145 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 ...
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1answer
70 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 ...
2
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1answer
587 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
111 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 ...
4
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1answer
147 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 ...
