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
1
vote
0answers
24 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 ...
2
votes
1answer
13 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 ...
-1
votes
1answer
19 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 ...
4
votes
0answers
52 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) ...
1
vote
1answer
50 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 ...
3
votes
2answers
52 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
30 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
40 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
19 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
41 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
29 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
39 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
63 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
61 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
1answer
123 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 ...
2
votes
1answer
35 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
29 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
56 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
62 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
200 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
47 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
188 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
328 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
53 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 ...
3
votes
1answer
78 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 ...
0
votes
0answers
40 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:
....
1
vote
1answer
413 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
votes
1answer
713 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 ...
1
vote
1answer
48 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?
2
votes
1answer
55 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
votes
1answer
71 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 ...
1
vote
1answer
123 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
83 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 ...
0
votes
1answer
434 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 ...
1
vote
0answers
95 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. ...
1
vote
0answers
86 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
46 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 ...
0
votes
1answer
224 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.
...
1
vote
0answers
107 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 ...
0
votes
1answer
58 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 ...
1
vote
1answer
400 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 ...
1
vote
1answer
100 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 ...
6
votes
1answer
130 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 ...
3
votes
1answer
83 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 ...
2
votes
1answer
116 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, ...
-1
votes
2answers
602 views
Bypass LGPL license using wrapper library
I wanted to use a library which is licensed under LGPL (free, only for open source projects). I wanted to use that in a commercial project.
Is that possible that I can develop an open source wrapper ...
2
votes
0answers
151 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-...
-2
votes
1answer
42 views
Free Pascal and LGPL
I want to modify this program and compile it using Free Pascal compiler.
The above program is licensed under GNU General Public License version 3. I know little about Free Pascal, and reading the FAQ ...
-4
votes
1answer
45 views
choose between open-source or close source
if hypothetically I have developed special software, and I only want author recognition for it (leaving money aside) can i choose to distribute my creation as open source without other people usurping ...
4
votes
1answer
306 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 ...
