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
247
questions
-1
votes
1answer
65 views
Apache and LGPL differences [closed]
What is key differences between Apache and LGPL licenses?
Are they both permissive and have same level compatibility?
5
votes
1answer
91 views
LGPL dual linking possible?
We are building an embedded system where performance and startup time is important and space is sparse so I had the idea to statically link to a LGPL licensed library AND - in case a .so of this lib ...
2
votes
2answers
51 views
Is it possible to link an LGPL v2.1 software with a proprietary library?
If I understand correctly, the LGPL v2.1 (and the subsequent licenses) allow an user to link a proprietary program to the LGPL licensed library as long as the open source library can be modified and ...
0
votes
1answer
57 views
When forking a GitHub project which has the GPL3.0 or the LGPL3.0 license - what do I have to do exactly?
In the case I want to fork a project from GitHub that has the LGPL3.0 or the GPL3.0 license, what do I have to do? The original license text might contain the "process" that is required (...
1
vote
0answers
59 views
Can I distribute a LGPLv2.1 derivative work whose source code doesn't compile?
Section 4 of the LGPLv2.1 gives me permission to distribute a "work based on the Library" in object code form, provided that I also distribute "complete corresponding machine-readable ...
1
vote
1answer
41 views
How to publish research source code that modifies GPL v3 and LGPL v2.1 or later code, as well as uses MIT and MPL2 code?
I wrote a software simulation for my Bachelor's Thesis. For a statistical routine for the simulation, I adapted code from an LGPL v2.1 or later licensed library, without including the library, just ...
2
votes
1answer
54 views
Does modifying build files (not source code) constitute a derivative work?
I am currently developing a library that uses libdwarf (licensed as LGPL 2.1). Suppose I modify the CMake files to get it to build with a different MSVCRT. What do I need to release and am I required ...
1
vote
1answer
26 views
How does the LGPL apply to the Web and define distribution?
If I use the lgpl licensed javascript library, do I have to release a closed source web application that is using it?
I feel like it's unnecessary, as long as I don't modify the source of the library.
...
3
votes
2answers
61 views
Is it possible to use QT under LGPL for a hardware commercial product?
I am considering using QT for a commercial hardware product. The product will have a Raspberry Pi Compute Module and will run standard Raspberry Pi Linux OS. It will load our application, which will ...
-1
votes
1answer
50 views
Is the avahi-client license incompatible with its dependency on DBus?
Avahi, including the C client library, is licensed under the LGPL.
On my system, (and I believe everywhere) libavahi-client.so.3 links to libdbus-1.so.3. DBus is licensed under a dual license, GPL OR ...
-1
votes
1answer
86 views
Can I distribute my program under LGPL if it has a password identification mechanism?
So I'm making an application which uses the python module PySide2 which is under LGPL. What I'm planning is to sell my program and make it non-distributable by making a unique password-identification ...
0
votes
1answer
29 views
(L)GPL software on devices provided for internal use
As far as I understand, there can be issues with (L)GPL-licensed software in code-signing contexts where modified code is not allowed to run.
Now, suppose an organization (for example, a company or a ...
1
vote
0answers
41 views
LGPL 3 vs Code-Signing: gmp, mpir,
Is there a way, to have the, from my perspective all-important, libraries such as gmp, mpir, mpfr be used in a license that fully supports code-signing?
My perspective is that of a curious researcher. ...
0
votes
1answer
44 views
What filename for a LGPL license for github projects?
When using a LGPL License in a github open-source project, you have the possibility to choose a license in github yourself. When you edit a license file github shows you a button with the text "...
2
votes
1answer
40 views
Is it possible/necessary to add Classpath Exception to LGPL?
I see people comparing the GPL with a Classpath exception to the standard LGPL. Does this mean that LGPL already has the Classpath exception or some language already similar enough to it? If not, can ...
0
votes
1answer
120 views
Do we have to choose the GNU LGPL v2.1 license libraries for our distribution?
Our situation - LGPLv2.1 Libraries = LGPL for whole work?
Our distribution Package contains libraries which are licensed GNU LGPLv2.1
jquery.form - dual licensed GNU-LGPL-2.1+ - MIT,
* ...
3
votes
1answer
56 views
Publish a heavily modified version of forked NPM package
I have forked and modified a legacy open-source NPM package for my personal use. And I thought publishing my modification might be useful for others.
The "heavily modified" in my case is:
...
0
votes
1answer
65 views
Can I use a (modified) LGPL-2.1 library in my MIT-licensed library?
I am developing a Modbus library for use on microcontrollers.
Internally, I am using an (apparently) heavily-modified version of libmodbus (slightly-modified from the version that comes with ...
6
votes
1answer
316 views
Is it possible to use a LGPLv3 plug-in in a GPLv2 program?
From the license point of view:
Is it possible to use a plugin written under "LGPLv3+" in a program protected by "GPLv2"?
The plugin is built as a ".so" library and at ...
1
vote
1answer
59 views
About unlicensed files
I was trying to releasing a library with LGPL license. However I had discovered that many time ago I copied and pasted in the library a header file defining some constants. This file was found on the ...
1
vote
2answers
141 views
Meaning of Plus symbol in GPLv2+ / LGPLv2.1+
I was checking the license compatibility of some open source software and I found out that sometimes software is released with a weird license like GPLv2+ / LGPLv2.1+. I'm not sure about the "...
1
vote
1answer
20 views
Do (L)GPLv2 licenses allow the distribution of derived binaries using Apple's XCode?
To create executables to run on iOS platforms, the intended way is to use Apple's XCode to build them. XCode is available for free to run on MacOS devices. But, assuming that Apple's terms allow the ...
1
vote
1answer
33 views
In repositories, does software under the LGPL include a copy of the GPL?
The repository for something that I need to use has 2 license txt. One which is the LGPL and the other the GPLv3. I heard from a member of their Discord that this is because the LGPL is an extension ...
2
votes
0answers
30 views
Distributing a proprietary library that uses an LGPL library
I would like to create a JAVA library, that will use an LGPL library. The LGPL library is a library that provides an API to create charts, whereas my library will provide a more high level API like ...
3
votes
1answer
204 views
Electron, Chromium and ffmpeg licencing confusion, how to build electron with licence compatible ffmpeg?
Intro:
Recently I'm working on an electron based application that is free to use but also has subscription based services.
It came to my attention that ffmpeg is shipped with electron, which has GPL/...
1
vote
1answer
38 views
LGPL and different architectures
I am in the midst of writing software using LGPL libraries, which will be part of an image for a device. Am I obliged to provide object files for different (micro)architectures than the device the ...
1
vote
1answer
67 views
Do we have to choose a GPL License when we use MIT, GPLv.2+, LGPL2.1, LGPL3, Apache 2.0 licensed libraries in our distribution?
Our question more specific would be
if the whole work has to be published (a must) under GPLv.3 or LGPLv.3 as the used gettext.inc, gettext.php, streams.php are GNU GPLv.2 or later and Smarty is ...
2
votes
1answer
76 views
Can we modify LGPLv3 license based ERP and change the license to private?
My client wants to use an opensource ERP named Odoo. However modifications like name, UI and languages support would be required. Also the license need to be private onwards
If it is permissible under ...
4
votes
1answer
179 views
How to use LGPL with embedded firmwares?
I am developing a firmware for embedded devices.
The project contains many libraries, plus one main executable that uses all the libraries. Each component is compiled individually. In the final step, ...
3
votes
1answer
138 views
glibc is LGPL - shouldn't virtually every Linux C project include attributions for it?
One of the requirements of the LGPL v2.1 license is:
You must give prominent notice with each copy of the work that the Library is used in it and that the Library and its use are covered by this ...
2
votes
1answer
53 views
Cygwin in a commercial application (LGPL with exceptions for linking)
I want to make a videogame using a proprietary license. It would utilize the SDL library and POSIX. From my understanding, every modern platform uses POSIX except for Windows. To fix this, when ...
5
votes
1answer
282 views
Is it possible statically linking Apache 2.0, BSD-2, or MIT libraries to AGPL v3.0 binaries?
TL; DR
We are considering creating a series of dependency modules (UI, repository patterns, etc) as separated Android libraries.
Could we use a permissive license (Apache 2.0, BSD-2 or MIT) despite ...
3
votes
1answer
116 views
Understanding GPL & LGPL: Free Software with zero-cost, proprietary libraries
Background:
This question is derived from a previous question.
I am writing a Blender add-on which enables the use of Blender with a piece of hardware (i.e., a lightfield display). Blender and the ...
3
votes
1answer
69 views
Choosing a license in Arduino environment
I wrote a C++ library for Arduino. The source code have the following specificities:
it includes headers, uses functions, macros, and structures/classes (and their methods) from LGPL libraries (...
4
votes
2answers
66 views
GitHub Repository with MIT license with one file under GNU license
I have a repository that is licensed under MIT license. The repository is still private, but I want to make it public soon.
Nevertheless, there is a file (a Makefile), that is licensed under
GNU LGPL ...
1
vote
2answers
127 views
Finding right license to support open source community only. GPLv3 too strict, LGPLv3 too permissive
I have created an open source library ( https://github.com/pitschr/knx-link ) that is designed to be used by other open source projects; not by end users. Currently it is licensed as GPLv3.
My main ...
2
votes
1answer
180 views
Software under LGPL and API under GPL, which license do addons follow?
In a specific case where the software is licensed under LGPL but its API is licensed under GPL, which of these should addons (that use the API) follow?
Additionally, if it's LGPL are addons required ...
2
votes
1answer
117 views
Is it possible to license that header file to LGPL but implementation to proprietary license
Suppose someone is writing a proprietary software that uses a shared or dynamic library that is licensed under the GNU LGPL license. If he wants to change the LGPL library code, he make some functions ...
3
votes
2answers
55 views
Does LGPL allow Pro / Enterprise versions of the same library?
I have a good understanding of GPL, LGPL, dual-licensing, etc. However I have a specific doubt about the meaning of "linking" in the LGPL.
Suppose that:
The library is released under the ...
1
vote
1answer
61 views
Can a LGPL project use contributed code after the original contributor withdrew it and was banned from the project?
"Project A" is released under LGPL ver 2.1 or, at user's discretion, above. This project is part of a bigger platform.
"Contributor A" submitted a highly-popular merge request to ...
2
votes
2answers
214 views
Is LGPL OK for mostly header only library?
I'm writing a library which is a template-rich C++ library. All templated functions and classes are defined inside headers. It also has some non-templated functions, which are implemented inside ...
1
vote
0answers
21 views
Source and jar without dependencies under MIT, runnable jar with dependencies under GPL
Image I would like to develop MIT (or Apache 2.0)-licensed software using an LGPL library.
As far as I understand this is allowed as long as I'm distributing the library in a seperate jar file and ...
0
votes
1answer
41 views
LGPL Software Rental
Can proprietary software which makes use of LGPLv3 libraries be leased to users for a period of time in exchange for a fee?
If the user modifies the program to allow relinking with altered LGPL DLLs, ...
2
votes
0answers
60 views
Linking to Apache v.2.0 software in LGPL v.2.1 project
I am working on an open source project for an academic competition. Our customer requires us to use for our product the LGPL v.2.1. We have to use QR codes in part of our application, and we found ...
5
votes
2answers
326 views
Using FFmpeg only for decoding in closed source commercial application
There are already lots of questions about FFmpeg licensing but I could not find one for my specific case.
I'm making an application which is able to play video files using FFmpeg (through a LPGL ...
2
votes
0answers
72 views
How to include license information for library that imports LGPL licensed library?
I have made a python library that imports an LGPL licensed python library.
My library does not modify the LGPL library, but it cannot operate without the import.
Is my library a "combined work&...
2
votes
1answer
210 views
If I use an LGPL library do I have to release the full source code of my project?
I'm creating software which includes (PHP library for generating PDF documents on-the-fly) to export invoices which falls under GNU Lesser General Public License, the open source product is called ...
-1
votes
1answer
37 views
Can i use an lgpl v3 licensed library in disclosed source code game project
I use an library called Toemsel.Network which makes networking job more easier, but its licensed under lgpl v3 which says make your source code open. I use dynamic linking for using library. ...
2
votes
1answer
125 views
Using LGPL 2.1 in a closed-source project
I'm making a commercial closed-source project in C++. I use this library, uchardet, which is licensed under MPL 1.1 or GPL 2.0 or LGPL 2.1.
For say LGPL 2.1, can I statically link uchardet to MY ...
3
votes
1answer
56 views
Commercial app with optional GPL software usage
Say one develops a closed source app that can produce a file of its own format like .ll .Then one asks the user to run a GPL licenced batch script that uses ffmpeg(GPL) to do the final bit. Note that ...
