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
154
questions
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1answer
36 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
vote
1answer
23 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
1answer
58 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
42 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
35 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 ...
2
votes
0answers
28 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
46 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
40 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
723 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
39 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
33 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
89 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
20 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, ...
3
votes
1answer
51 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
34 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
27 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
101 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
48 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
92 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
49 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
60 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
50 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
69 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
394 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
95 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
94 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
votes
1answer
218 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
19 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
121 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
votes
1answer
98 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
votes
1answer
86 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
votes
2answers
81 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.
1
vote
1answer
118 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
165 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 ...
0
votes
0answers
20 views
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 ?
1
vote
1answer
117 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 ...
-1
votes
1answer
96 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
votes
1answer
47 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
votes
2answers
152 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
votes
0answers
168 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 ...
3
votes
1answer
472 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
votes
1answer
100 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
votes
1answer
39 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?
1
vote
0answers
73 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
votes
1answer
71 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
votes
1answer
546 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
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 ...
0
votes
2answers
672 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
1k 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 ...
1
vote
1answer
99 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 ...
