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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62 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 ...
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1answer
52 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 ...
3
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1answer
810 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 ...
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1answer
340 views

How to write additional permission for LGPLv3 license

I’m planning to release my code under LGPLv3 license but I can’t find answers to several question. Let me describe my situation: I’ve created library and want to use LGPL v3 license for this code; ...
3
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2answers
428 views

If some software states it is BSD-licensed, how can it be distributing itself with GPL/LGPL components?

For a specific example relating to my question, I offer VisIt. Per the licensing information for VisIt, it is stated that it is BSD-licensed. But, looking over the libraries used in VisIt, it can be ...
1
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1answer
133 views

can I remove files and folders in a PHP package without violating its license?

Let's say I'm working on a PHP application and I want to integrate some PHP packages like TWIG. Using Composer or some other automated management or code assisting technologies is irrelevant here. All ...
3
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1answer
366 views

GNU Lesser General Public License with signed C# assembly

We have a closed source software written in C# that we sell. All of our assemblies are signed. We want to use a third party assembly, that is published under the GNU Lesser General Public License v2.1....
1
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1answer
126 views

Is the Epson license Open Source?

I plan using this library https://github.com/endlessm/epson-inkjet-printer in a commercial product. The licensing conditions for it are the following: This program is distributed under GNU Lesser ...
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2answers
2k views

What is the difference between an open and closed consumer device?

The Qt Open Source Licensing Obligations contain the following line: Must make “open” consumer devices What does this mean? I know about the linking mechanism required by LGPL, and that part of ...
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1answer
122 views

Can I obtain a source code for RGSS1/RGSS2, assuming it contains LGPL part?

RGSS1/RGSS2 is a game engine for RPG Maker XP and RPG Maker VX. The binary of them consist of two files: Game.exe ... It's about 100KB and seems to be a mere loader. RGSS104J.dll ... It's about 800KB ...
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1answer
1k views

Can I use the Qt Installer Framework in a commercial product?

The Qt Installer Framework (QTIFW) is part of the Qt Framework which is available under the LGPL3. This page lists the components that are available under each license. Unfortunately it doesn't list ...
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1answer
86 views

What does LGPL point 3 mean?

The LGPL point 3 says: 3. You may opt to apply the terms of the ordinary GNU General Public License instead of this License to a given copy of the Library. To do this, you must alter ...
2
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0answers
86 views

Creating a wrapper library for LGPL code and distribute the used LGPL code as its own library?

I've been working on a proof of concept prototype for my company. The libraries for the board I've been using are licensed under the LGPL. We've been happy enough that we're now considering using this ...
5
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1answer
101 views

Providing license text on a display-less system

We are building a display-less system, which interacts with the user only through an audio interface (and some buttons). Our system is based on Linux, and as such we are using several GPL/LGPL ...
3
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2answers
305 views

Are there legal issues with bundling one's own LGPL-licensed code with proprietary code?

My company's legal team is currently worried about how to move forward with some app releases intended for our enterprise customers. Here's the gist of it: We have many products referred to as "apps"...
1
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1answer
464 views

Licenses PyQt and QT

I would like to use PyQT5 and QT5 to create an -internal- application for a friend and his company. I would like to use PyQT GPL license and QT LGPL license. To respect these licenses, I need to: ...
9
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3answers
4k views

Linking from LGPL 2.1 software to Apache 2.0 library

The FSF claims that GPL v2 is incompatible with Apache 2.0 and that linking to a library generally creates a derivative work of this library. However, the linking exception of the LGPL allows ...
0
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1answer
172 views

Ethereum's source code

Am I correct to assume that I can copy Ethereum's source code, modify it to create my own blockchain and issue my new currency, without any problems provided that I follow GPL and LGPL?
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1answer
128 views

Does inbound=outbound apply to GPL-family without a CLA?

The traditional expectation for contributions to a free software project are "inbound=outbound" [1] [2]. That is, if the project is under license X, contributions are made under license X. Does this ...
7
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1answer
1k views

LGPL and static linking when third-party tools are required - providing an alternate version that can accept a replacement LGPL library

I've been through a lot of the LGPL questions here but haven't found this specific question. This is probably the closest to my situation: Dynamic linking LGPL library and licensing in Windows Store ...
2
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1answer
618 views

Copied code from LGPL library to my executable (what copyright notice should be? LGPL or GPL?)

I have a program containing only one file: main.cpp. I copied there a few lines of code from LGPL licensed file (from an LGPL licensed library). What copyright notice should I put at the top of my ...
6
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1answer
363 views

Using public domain code in an LGPL program

I want to release a program that uses some public domain code (or a permissive license) from netlib.org under the LGPL license. Since the licenses (or lack of it) are compatible, there should be no ...
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1answer
432 views

Can I change my Qt project license?

I have non-commercial Qt license, but I need a static compilation option because as I know, my program needs many DLL files and I want to have the possibility of running my program on another machine ...
1
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2answers
44 views

Proper License for Ritchie Stock Exchange, Proprietary Algorithms, and Algorithmic Trading?

A little context for this question: I'm building an alternative stock exchange (ATS) named "Ritchie". It is based on "The Open Source Way," and I'm trying to decide on the proper license. http://www....
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1answer
213 views

LGPL license for shotwell, VLC media player

Just curious to know, why are the programs shotwell and VLC media player released under LGPL? Maybe because that they are written just not for Linux, but for other proprietary operating systems too? ...
3
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1answer
553 views

LGPL static linking

I know there are already many other questions asked about LGPL requirements, but none of those did match my case I want to distribute a free application which uses a LGPL-licensed library (Qt) ...
2
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0answers
159 views

Usage of a part of a EPL library in LGPL or Apache 2 project

As I understand it, I am allowed to link a eclipse licensed jar to an LGPL or Apache 2 licensed open source project, without to change the projects license. Correct me if I am wrong. The question is,...
5
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2answers
325 views

Shouldn't LGPL v3.0 provide exception to section 5 (instead of section 3) of GPL v3.0?

Taken from section 1 LGPL v3.0 (https://www.gnu.org/licenses/lgpl-3.0.en.html): You may convey a covered work under sections 3 and 4 of this License without being bound by section 3 of the GNU GPL. ...
8
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1answer
789 views

Including untouched LGPL library in a MIT-licenced project

Can I include a library licenced under LGPL 2.1 in an MIT-licenced project without any legal problems? Since it's not a compiled language, I would provide the full untouched source code of the ...
2
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1answer
83 views

Are the terms of LGPL 3.0 already covered by GPL 3.0 aggregate definition

Are full terms of LGPLv3.0 already covered by GPLv3.0 section 5 under the terms of an "aggregate"? A compilation of a covered work with other separate and independent works, which are not by ...
3
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1answer
832 views

Does compiling a JS bundle with webpack/browserify violate the LGPL license?

According to the LGPL license, you must release your source code if you statically link a library. Here's an excerpt from tldrlegal.com: If the software is statically linked (i.e. compiled into) ...
8
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1answer
294 views

What exactly do I need to do license-wise when using LGPL 2.1 licensed code

I am using a LGPL (GNU Lesser General Public License version 2.1) licensed library in my Java project I'm soon about to release. In order to solve a bug in this library I have copied a particular ...
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0answers
66 views

“Free” licenses understanding and workaround for a simple java app

I'm developing a java app with my hands and feet. I intend to share it with people and it may become commercial. He who knows can write it all down in notepad but I have been using Eclipse. The ...
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2answers
136 views

GNU Lesser GPL with additional requirement for customer reference

I am planning to release a software under GNU Lesser GPL (not sure yet if v2 or v3 should be used). But I would also like to state a requirement that whenever my software is used commercially the ...
4
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1answer
59 views

What are the disadvantages of distributing my commercial application along with Object code as per LGPL licence?

I am considering using a library licensed under LGPL which states... If you link other code with the library, you must provide complete object files to the recipients, so that they can relink ...
7
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3answers
4k views

Modifying an LGPL library and using it in a commercial product

I found a library which helps me implement something for a company: https://www.openmuc.org/sml/ Its license is LGPL. Unfortunately, I'd like to use this library for an Android project and there I ...
2
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2answers
87 views

Licensing questions

I've been developing a Django app for my work (scientific stuff), and I'm planning to release it on GitHub very soon. But I do have licensing questions to be sure to do it right. This work is ...
2
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1answer
537 views

Do I need to provide build/install instructions for LGPL-2.1 or AGPL-3.0 licensed libraries?

We have a Java project which uses a couple of libraries licensed by LGPL-2.1 and uses MongoDB which is licensed by AGPL-3.0 as its database. We don't modify any of them. Our legal team claims we ...
5
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3answers
2k views

Dynamic linking LGPL library and licensing in Windows Store app

I've a project in which I would like to use an LGPL licensed library, in this case FFmpeg without changes. I've run through questions and answers regarding LGPL in commercial products with conclusion ...
1
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2answers
934 views

Implication of LGPL and MIT licenses for commercial use (of JSXGraph library)

I'm interested in using the JSXGraph JavaScript library in a website project. The library is covered by the LGPL and MIT licenses. I'm new to licensing and am trying to answer the following question:...
4
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1answer
946 views

Provide closed-source application with LGPL-Libraries

We plan to ship an application together with the required dynamic-libraries (SO/DLL), we link dynamically against one of these libraries, which uses the others libraries. The LGPL requires us to ...
-1
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1answer
58 views

What open-source license should I use for my tool?

I have developed a tool that uses another tool to convert a file from format#1 to format#2. And currently, my tool works only if it is given the file in format#2 as input, and so, it depends on that ...
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5answers
3k views

How to prevent contributors from claiming copyright on my LGPL-released software?

I have published the first version of my software on my company's git repo and some other developers outside of our company have shown interest in contributing to our work. We are releasing our ...
7
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2answers
3k views

What are the implications of glibc (GNU C Library)

What are the implications of glibc? The library is installed on most GNU/Linux systems (and maybe others, don't know). The thing is it is supposedly licensed with LGPL, but I am not sure which version ...
7
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1answer
1k views

How to comply to LGPL with Maven/JAR packages?

I’m using Maven to package my JavaFX project for distribution. Since JavaFX is licensed under LGPL, I need to allow users of my project to replace its DLLs by newer or compatible versions. But I don’t ...
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1answer
2k views

FFmpeg LGPL licence and embedded codecs

I want to use FFmpeg in commercial software using its LGPL licence without enabling the GPL add-on. However, the libavformat library allows decoding for a lot of codecs straight out of the box. These ...
5
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1answer
293 views

Javassit: What has to be distributed when using the pre-compiled .jar?

I am using Javassist within my free open-source project (Javassist is included as pre-built .jar file which has been downloaded from the Releases section on their page, no source code). I'm now ...
4
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1answer
267 views

Licensing of 3rd party libraries

I'm using a 3rd party lib in Java which has the LGPL license. E.g. jasperreports (https://mvnrepository.com/artifact/net.sf.jasperreports/jasperreports/6.3.0). Which license is relevant for me as a ...
5
votes
1answer
1k views

How can LGPL and proprietary licenses be combined?

I have a project, a big portion of which can be released as LGPL, but there are still some portions that must keep a more restrictive license. I'm not sure what exactly is allowed. The intent is ...
5
votes
1answer
758 views

Changing QT library licence for application from LGPL to commercial

I consider myself an amateur and the following is based on my limited understanding. I also live in Germany, but copyright questions would probably cross borders anyway. Situation Let's assume I ...