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Questions tagged [lgpl]

DO NOT USE! LICENSING / LEGAL ADVICE IS OFF TOPIC -- LGPL questions should be asked on opensource.stackexchange.com - The GNU Lesser General Public License is a weak copyleft free software license and is the second most popular open source license. It is generally designed for and used by software libraries.

NOTE - Licensing is no longer a valid topic for Stack Overflow. If you have licensing questions, please ask them on OpenSource.SE (which has its own LGPL tag). Legal questions may be asked on Law.SE

The [GNU Lesser General Public License][1] (formerly the GNU Library General Public License) or LGPL is a free software license published by the Free Software Foundation (FSF). It was designed as a compromise between the strong-copyleft GNU General Public License or GPL and permissive licenses such as the BSD licenses and the MIT License.

The LGPL is primarily used for software libraries, although it is also used by some stand-alone applications, most notably Mozilla and OpenOffice.org and sometimes media as well.

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Is this a valid LGPL scenario?

Suppose I have Project X under closed source. It references/links to component Y which is LGPL, we make modifications to component Y 1) We release Project X binaries with the source to the modified component Y OR 2) We contribute component Y…
jumpinjackie
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What restrictions will the LGPL put on my code?

I want to use CxxTest for unit-testing in an application. I do not want to be forced to release source code or object files. The LGPL (under which CxxTest is released) is confusing on this issue. Am I ok? Do I need to do something special?
rlbond
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Writing PDF reader Library

I have searched for PDF reader library that is licenced under LGPL or the like but could not find. I found only GPLs. Now I need a help to write my own library to read the PDF file and display it in my app. I have downloaded PDF Specs 1.7 from Adobe…
Stefano Mtangoo
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License of a plugin for a LGPL program

I would like to create a non-free plugin for evolution which use a LGPL license ? Is it possible ?
matteli
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Qt or wxWidgets

I'm going to start working on a new project. It's a 3D game using OpenGL for Windows, Linux and Mac OS X. and I'm going to need a library for GUI, windowing and handling input. I ended up with 3 choices Qt, WxWidgets and GTK+. All of them are under…
rxjsisfine
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Can I enhance one LGPL library based of implementation of another?

I was wondering if it was legal/not frowned upon to base enhancements to one LGPL library off of the functionality of another LGPL library. Note that because of the method of implementation, the source code could not be directly built off of,…
th3flyboy
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CMS LGPL branding

I am considering extending a content management system which is licensed under the LGPL. My question is if I can rebrand the CMS. I'm only going to be charging for my customizations and implementation. I'm just wondering if I can brand it as…
Phil
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Qt Creator, LGPL, and the Nokia N900

I am interested in creating closed source applications for my Nokia N900 using Qt Creator and the LGPL License, but I'm unfamiliar with how exactly I'm able to do this. I understand that I should use dynamic links vs static links when creating my…
Fidsah
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Charging for sourcecode and the GNU LESSER GPL

Question: If I release a program under the LGPL, can I charge for the sourcecode? The idea is sell the program, and who wants can buy the source, too, at an additional price.
Stefan Steiger
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If I modify and dynamically link against a modified LGLP Lib, do I have to make the changes available?

I have found a bug in an LGPL Lib that I currently link against dynamically. The application is closed source I link dynamically to the LGPL Lib The application will be available to the public If I modify the lib my understanding is that I will…
0xC0DEFACE
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Licensing: Android, LGPL and the ZBar QR Code scanner

I have integrated zbar code scanner in my Android-app in minutes (great library!), nevertheless I am thinking of replacing it with another QR code reader now. The reason is, that there is much scepticism[1][2] on the web whether LGPL is compatible…
stoefln
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Implications when using GNU licensed open source

I’m somewhat confused about the implications of introducing source code licensed under the GNU Lesser General Public License. I'm developing a test framework and I want to use and modify an open source project as part of the existing framework. …
magnarwium
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could i have to send all the source code of the application who has just one gpl library?

I was evaluating ZK framework, which is LGPL and it's spring plugin zk-spring is GPL. If i develop a system with different application like domain, web(zk, zk-spring), web-services. Now When I deploy these application on the client machine, would i…
vicky
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LGPL License and shared libraries

I would like to know if it's allowed to distribuite a binary-only/non-LGPL'ed application together with a shared library (used by the application itself) in a single archive, where the original source code of that library is covered by the LGPL and…
Martin
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Distribution of commercial front-end for LGPL-licensed console application

There's a LGPL-licensed console application. I want to create a commercial GUI front-end for it and distribute it bundled with this console app. Does LGPL license allow that? Note that I am not using a LGPL-licensed library, I am using a stand-alone…
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