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I maintain a software, a small PHP library, that is released under the LGPL version 3 license (LGPLv3). Someone wants to use the library in their software which has the GPL version 2 license. This license compatibility matrix suggests this is not possible without changing the licensing terms of one of the software. I have been requested to dual-license my code under LGPLv2.1 and LGPLv3. Does it make sense, and what might the drawbacks be?

Thank you.

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migrated from stackoverflow.com Mar 27 '12 at 16:14

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1 Answer

The major drawback is that you lose the benefit of the changes made in LGPLv3. These changes mainly clarify how libraries may be combined with other works.

I would suggest just dual-licensing under LGPLv3 and plain GPLv2. This will give the other software project what they want, while mostly not giving up the benefits of LGPLv3.

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+1: Sound suggestion IMHO, probably GPLv2+ (version 2 or later) and LGPLv3. –  hakre Apr 7 '12 at 14:10
    
Thanks for the comments... I have decided to go with GPLv2+ and LGPLv3. –  user594694 Apr 12 '12 at 2:58
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