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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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LGPL/MPL and static libraries

I need to compile LGPL licensed code into a proprietary static iOS library. Since the code is used in static library I can't link against a precompiled version of the LGPL licensed library. How do I go about this, and what do I have to release if I…
user187676
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Is there any alternative to libVLC to stream and display rtsp?

i have problem with the GPL license that libVLC only support , is there any alternative ? something that is lgpl or other none gpl ?
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What files do I need to distribute if requested to comply with LGPL in an iPhone app?

I'm working on an iPhone app which uses the Zbar library which is under the LGPL licence. What I'd like to know is what I need to give someone if they request a copy of the code under this licence for my iPhone app? I've been told they are in the…
Mark Reid
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Making an app in Qt, under LGPL, Can I sell it?

I will be developing an application in Qt, using Qt under the LGPL license. Can I sell it to a client, without providing the source code for it?
Dragunov
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What are the extents of the meaning of "distributing" under the LGPL license?

This question is a follow up on one of my other questions, Can I legally Incorporating GPL & LGPL, open-sourced software in a proprietary, closed-source project? Many of the conditions of the LGPL license are based on the notion of distribution. My…
Hans Sjunnesson
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relicensing a BSD library

I like a library released under BSD license. This library is not actively maintained since late 2007. Can I fork the library and relicensing under an Creative Commons license? The original author must be informed? Are there problems other than…
dfa
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Distributing executable JARs depending on LGPL code license compilantly

I got a Java project I don't want to publish under a Gnu license. (MIT, but nevermind.) As build management tool I use Maven, that generates a “jar-with-dependencies”. The project depends on gnu.getopt, licensed under the LGPL 2. So my questions…
Kijewski
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Choosing an open source license for a standard based on XSD

got a question about an open source project I'm planning to put in place (to be hosted either at Codeplex or Sourceforge). In short, the project will consist of an XSD file to define a schema for XML files to adhere to, and some C# code to work with…
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Free image analysis libraries?

I'm looking for some Free (preferably LGPL'd) image analysis/comparison libraries. The most important thing they should be able to do, is compare two different images and say if they're similar, with adjustable sensibility (i.e the higher the…
escozzia
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How to mark that a lgpl library is modified

I am using an LGPL library in my code. For my needs, I need to modify the code in the library. How do I mark the jar file that it contains modified code? Some txt file in the jar? In that case, what do I write in the txt file? I will include in the…
David Göransson
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Qt LGPL license exception?

I'm using the Qt/Mfc Migration Framework to begin to convert some UI code from MFC to Qt. I'm wondering whether I absolutely have to keep the Qt migration code in a seperate library or if it would be possible to include it in my project. In order to…
drby
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Linking GLIBC statically and proprietary software licensing

I have basic understanding problem with open source and licenses. Could someone please clarify some questions for the below scenario. Excuse me if it is very basic I'm writing a proprietary software in which i plan to use some open source…
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Qt Changes and LGPL

My company uses Qt 4.7.4 under LGPL for a commercial proprietary application. We had to put two changes into the source code of Qt and re-build its DLLs to resolve some issues. What should we now do under LGPL? Are we to expose our source code? or…
JasonGenX
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LGPL grammar file licensing

Given a LGPL'ed grammar file, is the source generated by a compiler-compiler for the grammar a derivative works? What about if the grammar file was modified before it was given as input to the compiler-compiler? There isn't any linking, at least not…
DAC
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Can I remove some code from a LGPL library when using?

I'm using a javascript UI library which is released under LGPL. Since it's very big, I want to remove some unused code to make it smaller. Is this allowed?
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