LGPL components in commercial software?

Hi there,

I was just wondering if it is possible to use LGPL components in a commercial product!?

According to the LGPL license software resulting from LGPL licensed software needs at least to be published as LGPL or as GPL.

What I was wondering about is to use a LGPL licensed user management for a documentation software. Is this ok when I explicitly mention the user management is LGPL ???

thanks in advance

Sven

Is this a proprietary application or will it be released under a copyleft license similar to the LGPL? If it is to remain proprietary, you must dynamically link it to the LGPL'dlibraries. You must also redistribute your modifications to that library under the LGPL to users who receive your application. If you statically link your application, then it must also be released under the LGPL (or GPL).

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Thanks for the info!

what do you mean with dynamicaly link? Is it sufficient to mention and link that component in the credits section ?

Nah. Dynamic linking is a method of using shared library code in an operating system which the linker loads at runtime instead of being part of the executable binary. Check Wikipedia more information.

AH! Now I get it! sorry I am not native English speaker. (as you might have guessed. hehe)

I read through that wikipedia entry, which brings me to my next question. (and hopefully last)

The system I am working on is a php application. Since it's only script and isn't compiled at any point, is it permitted to load the program as a class? e.g. (I hope you get what I mean... lol sorry for my bad English!).

kind regards

Sven

I also have that same question. If a javascript library or php library is licensed under the LGPL then it is not compiled into an executable.

If it is a portable javascript or php library, that you might need to modify (or maybe not at all) and you simply include the file I would personally consider that linking.

So under the LGPL, would this be okay to do in a commercial product that you are selling licenses for? There are a ton of very nice JavaScript controls out there that are released under the LGPL and on one site it specifically says it is okay to include it in commercial programs. But I am not sure if that's because the LGPL allows it or if they are specifically giving permission.

So can you include PHP and JavaScript libraries in your commerical applications that are released under the LGPL?

The LGPL doesn't force its use to be non-commercial or anything like that. Only open source. Which is why commercial and open source applications can go hand in hand just fine.



Yes. As long as the library, or its derivates, are also open source (per terms of the LGPL). If your code isn't open source itself, you should be fine if you keep the library or LGPL code apart from your own. Just include it from a separate directory or something. This avoids any open source issues with your own code.