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
311
questions
2
votes
2
answers
124
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can a GPL service receive input requests from a proprietary software and provide specific output results?
can a GPL service receive input requests from a proprietary software and provide specific output results?
obs.: the gpl service is a local machine daemon that just listens for new files in a folder, ...
- 131
2
votes
0
answers
58
views
Right to modify proprietary software linked to LGPLv2.1-licensed library?
The LGPLv2.1 license states in Section 6:
As an exception to the Sections above, you may also combine or link a "work that uses the Library" with the Library to produce a work
containing ...
- 2,058
3
votes
2
answers
319
views
Am I allowed to statically link a LGPL-2.1+ library into a GPL3-licensed library?
I'm writing a dynamic library that's licensed under GPL 3.0. To simplify distribution, I'd like to statically link as many of the library's dependencies as possible. One of these libraries is licensed ...
- 233
1
vote
1
answer
87
views
Does GPL apply to optional and disabled code and no linking
I am using mostly LGPL or compatible libraries, but there's also a few that are available under GPL & compatible only.
I understand that GPL requirements apply to software distribution, in other ...
- 479
2
votes
1
answer
107
views
Do I have to comply with the LGPL when using a BSD-licensed library in a closed-source application, which then uses other LGPL-licensed libraries?
I am going to implement a closed-source, commercial application that uses and links statically the modbus-esp8266 library which is released under a BSD New license. At the same time, you can see in ...
- 23
5
votes
3
answers
336
views
GPL and Linking Exceptions
I'm trying to decide on a license for some code I'm going to be open-sourcing shortly, and having a hard time choosing among the major licenses (as less common licenses are things people are not as ...
- 83
3
votes
1
answer
52
views
LGPL and DT_RPATH compatibility
Suppose I distribute a program dynamically linked to a third-party LGPL-licensed library A, which dynamically links to another third-party library B (not necessarily LGPL), all of them distributed ...
- 133
6
votes
1
answer
121
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Updating the URL in the GNU LGPL 3.0 License
I have an Open Source project under the LGPL 3.0 License. This project was created before the official text of the LGPL License used HTTPS in the URL for the Free Software Foundation website. I want ...
- 63
4
votes
1
answer
236
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Can I notarize my MacOS package that contains LGPL dynamic library?
I am commercial software developer, and my piece of software dynamically calls the LGPL v2.1/LGPL v3 library. Am I allowed to notarize my installation package that includes LGPL dynamic loaded library ...
- 41
2
votes
1
answer
108
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Using a library with triple-license from a private application
We are analyzing the possibility of using JRuby library for some maintenance tasks in a private closed-source application that we are selling to a customer.
According to the license information on ...
- 131
21
votes
5
answers
8k
views
If I can't provide GPL source because a supplier did not provide it, am I at fault?
Let’s say that I paid a third-party company to develop a new application for me. I also make myself clear about the need to have the full property of the code at the end of the developing phase. I ...
- 221
10
votes
1
answer
2k
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Can the GNU LGPL be removed from a piece of software?
Maybe I'm searching with the wrong terms, but can the GNU LESSER GENERAL PUBLIC LICENSE be removed from a software project like this browser extension? The commits in question are these
https://github....
- 203
3
votes
1
answer
127
views
LGPL 3 and Java package renaming
In my company, we have a library that makes use of a 3rd party library with an LGPL3 license.
Although our library does not extend or modify any of the 3rd party library's code, it provides some ...
3
votes
0
answers
61
views
Can my open-source package adhere to GPL/LGPL v3 if it has a closed-source dependency?
My plugin dll depends on the presence of Microsoft Excel on a client computer. Excel is not part of the OS. The dependency is a 2 way transfer of data, the dll I created only works if run from inside ...
- 131
0
votes
1
answer
596
views
Use Qt Open Source with Qt Creator for Commercial and Private code application
I have a question about the use of Qt and its licenses because i'm so confused with it.
I want to make an application (Commercial and its own source code as private) in C++ which uses Qt and its ...
4
votes
1
answer
199
views
Using MIT license while linking with MIT and LGPLv3
I'm working on a library I would like to license under MIT license (mostly to allow its use in proprietary software).
I'm using APIs of two other libraries, one under MIT, other under LGPLv3.
I'm just ...
- 51
1
vote
0
answers
26
views
Use of ffmpeg and ffprobe exe files in application [duplicate]
We have written very small application in Visual Studio which uses 2 x FFmpeg commands and 1 x FFprobe command. We plan to include the two exe files as a resource when the application is packaged in ...
- 11
5
votes
1
answer
650
views
How should I license my software if it links statically with glibc?
I have no experience with licensing. I used GitHub to put a license in one of my repositories, which basically uses C. As I didn't want to impose restrictions (the code is a very small utility, I don'...
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0
votes
1
answer
99
views
QT on windows - limitations, restrictions, commercial products
I've downloaded the qt online installer from: https://www.qt.io/download-open-source to develop on Windows.
My question is: as long as we respect LGPL are we forced to buy a commercial license (for ...
- 103
8
votes
5
answers
3k
views
Does license prohibition of illicit / malicious use or modification clash with GPL's freedom to modify?
I am building a decentralized community service, where it is critical for each client to run a "legitimate" build version in order for the service to operate properly. The client versions do ...
- 479
3
votes
1
answer
298
views
Clarification on Proprietary software and linking LGPL libraries
I have an question about my understanding of Linking Proprietary software to LGPL libraries.
Based on my understanding, one can link his/her software to LGPL lib via:
Statically: Proprietary & ...
- 187
4
votes
1
answer
177
views
Which license I should use for public project?
the brief
I want to do "open source" project.
In my mind, I would like to :
that the code has always the same license even if it is redistributed or sold etc...
that the authors and ...
- 143
6
votes
1
answer
634
views
Can I use LGPL v2 and v3 in the same file of code?
So, I made a program with Pygame and PySimpleGui, both licensed under LGPL. I didn´t modified them, just imported and used them on my code. Well, I heard somewhere that GPL 2 is not compatible with ...
1
vote
0
answers
79
views
Does LGPL allow closed-source third party modules?
I wonder if i could, for example, distribute a commercial, closed source module for the Qt framework, that is licensed under LGPL.
Does LGPL allow closed source third party modules that may make use ...
- 111
2
votes
1
answer
472
views
Where exactly I have to put the copyright notice of LGPL?
Where I have exactly to put the LGPL copyright notice? I mean, I know I have to put on the code, but do I have to put in the program interface? Or I can just put it on the file of code? And do I have ...
3
votes
1
answer
446
views
How does the OCaml LGPL Linking Exception differ from using a non-copyleft license?
The OCaml compiler and many other third-party OCaml libraries are licensed under the LGPL with a linking exception:
As a special exception to the GNU Lesser General Public License, you may link, ...
- 643
1
vote
1
answer
147
views
LGPL library and proprietary dependencies / references
I'd like to use LGPL library for one of my projects. The problem is I need to modify several methods and call there platform-dependent functions covered by NDA.
Is there a way to do it legally without ...
- 13
9
votes
3
answers
5k
views
Can I make my own license? [duplicate]
I was getting frustrated because I really wanted to use a GPL Family license for a piece of software I am developing. However, some of my target audience, OS Developers, are closed source (looking at ...
- 166
1
vote
0
answers
149
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Confusion about Licenses
I have confusion about how the GNU open source licenses and QT commercial licenses.
In the QT's pricing page it says:
Can I distribute Qt binaries in conjunction with my desktop or mobile application?...
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6
votes
1
answer
1k
views
Ran into "GNU Lesser General Public License version 2" in a copyright notice - what license is this? LGPL 2? LGPL 2.1? Or...?
Long story short, I'm working on building the debian/copyright file for a massive package, and have ran into the following rather confusing phrase in the copyright header of one of the source code ...
- 163
1
vote
0
answers
98
views
Qt Licensing for non profit open source software
I am developing software with a non profit organization and we would like to use the Qt framework to provide a GUI. This will be open source and free for everyone, for ever. Will we need to purchase a ...
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2
votes
1
answer
320
views
Does the Common Public License (CPL-1.0) require dynamic linking to keep source code undisclosed?
I'm looking into the rules of the Common Public License and am wondering how far it's copyleft-ness extends.
AFAIK: With LGPL you can keep the library you wish to use in a separate .dll or .so, ...
- 123
5
votes
2
answers
137
views
Would industrial HMI devices be considered "User Products" for LGPLv3?
GPLv3 defines a "User Product" as a:
A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or ...
13
votes
1
answer
4k
views
Do I Need to Publish my Source Code because of LGPL?
I want to use the 7-Zip program to do some archive manipulation and creation.
I have an app that has a proprietary closed source license.
For this scenario, I would include the 7-Zip program in its ...
- 241
3
votes
1
answer
274
views
Does LGPLv3 Tivoization apply to non "User Products"?
LGPLv3 section 4e:
Provide Installation Information, but only if you would otherwise be required to provide such information under section 6 of the GNU GPL, and only to the extent that such ...
4
votes
1
answer
287
views
Bug in FFmpeg build allows GPL filter use from an LGPL build can I distribute FFMPEG as LGPL
I have build ffmpeg (4.3) libraries configured for LGPL on multiple OS's looking to be called from my own code using ffmpeg filters to deinterleave video.
below is the configure command.
./configure --...
0
votes
1
answer
105
views
Correct license for header only library
I want to distribute a header only library and I think that the spirit of the LPGL license is very much what I want. In particular, however, I want that a 3rd party that uses my library and modifies ...
- 101
2
votes
1
answer
246
views
Relicensing a library to GPL when an MIT-licensed program depends on it
I wrote a library and released it under the MIT license. Another developer and I started another project that depends on my library; it is also under the MIT license. I want to relicense my library ...
- 287
4
votes
1
answer
1k
views
Converting a Qt program from LGPL to "commercial" and back
We have developed a Python program with a Qt GUI, using the PySide2 bindings. We have so far used the LGPL option of Qt. We were happy with this, as we believe we understand our rights and obligations ...
- 41
2
votes
0
answers
239
views
Internal Python application and Python packages with multiple licenses
I am developing a tool for internal use in my company using Python and several Python packages.
This tool uses different kinds of Python packages, all of which have one of GNU Public License, Lesser ...
- 21
3
votes
1
answer
394
views
How can an AGPL web application allow proprietary plugins?
We are developing a web application (REST API backend + frontend, both Python/Flask if that matters).
We want to distribute it as a free software and we'd prefer a GPL license over a less restrictive ...
- 133
2
votes
1
answer
585
views
Am I allowed to use QtCreator while working for a company, if I'm using LGPL?
On Qt Modules and Tools for Designers and Developers
if I choose LGPL then under Development Tools I see QtCreator is disabled.
And
LGPL v3: With LGPLv3 license option you can use the essential ...
- 175
1
vote
1
answer
140
views
What is the impact of the LGPL license on building solutions using abp.io?
I want to write commercial, closed-source applications using abp.io.
Given that abp.io is licensed as LGPL, LGPL is primarily seen as a license for libraries, and abp.io is a framework, not a library -...
4
votes
1
answer
194
views
Including a MIT library that contains a statically linked LGPL library within a Mac app
I'm building a Mac app that I'm planning to release on the Mac App Store. I would like to use a MIT library that contains a statically linked LGPL2.1 library. My understanding, is that in order to ...
- 143
6
votes
1
answer
2k
views
Is LGPLv3 against tivoization? Or only GPLv3?
The LGPLv3 license text states:
e) Provide Installation Information, but only if you would otherwise be
required to provide such information under section 6 of the GNU GPL,
and only to the extent ...
- 2,058
2
votes
1
answer
140
views
Do I need QT Commercial License for annotation tool?
I'm going to make an annotation tool for deep learning using PyQT.
Trained models are sold on the product.
My annotation tool is not sold with the product.
so, Customer can't see my annotation tool.
...
3
votes
1
answer
269
views
Contributing own code partially relying on a LGPL-3 python module, on an Apache2 Project?
My goal is to make a contribution to an open source Python project hosted on GitHub, which has an Apache 2.0 license. To do so, I wrote a few lines of code. However for a specific feature of my ...
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21
votes
2
answers
4k
views
Contributor asking to remove their contributions
I have a project licensed under the LGPL-3.0. A major contributor recently stopped contributing, and is now requesting all their contributions to be removed from the project. All the code in the ...
- 365
0
votes
1
answer
277
views
Proprietary command-line tool with GPL/LGPL GUI
Suppose that I created a command-line tool with a proprietary license.
If I create a GUI, for the command-line tool, using a GPL/LGPL-licensed library/framework such as Qt, does the copyleft apply to ...
- 103
1
vote
1
answer
337
views
Impact of GraalVM native images compilation on LGPL-licensed libraries
As far as I have understood, LGPL-licensed libraries must either be linked dynamically or there must be a mechanism to swap them out of the resulting work. See section 4d of the LGPL license.
Now in ...
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