GPL Hijacking

LGPL looked like the obvious choice for PCBO when the following problem cropped up – GPL Hijacking.

  • LGPL doesn’t spread to other parts of an application and it does allow being linked with closed-source programs. LGPL is “compatible” with GPL in the sense that you can, at your option, convert a LGPLed program to a GPL one any time you want. Such a change is irreversible. For a small project, this is a risk. If a truly skilled person adds a lot of functionality and relicenses the code to GPL, the LGPLed one would swiftly be abandoned and the GPL-changes cannot be applied back in the LGPL version.
  • Where lies this license problem? MPL itself has no problems with the LGPL or GPL licenses, the problem is on the GNU side. GPL has a problem with MPL.
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