Conflict between vBulletin's license and GPL packages/plugins?

[ElfMage]

Originally Posted by SaN-DeeP

Some more information from same page.. It is little complicated...

I interpreted this part as applying to a new project (that needed to use a non-GPL library), not merging two existing projects (one of them already released under GPL). I may be wrong.

Originally Posted by amykhar

You CAN write code to integrate with vbulletin without using any of Jelsoft's files or functions.

This is true, but I would still be using the 'data structures' from Jelsoft's software (SQL Tables). Also, in order for the plugin to be GPL-compatible, it cannot depend on any non-free software being installed (which the plugin would, since it would expect vB's tables in the DB).

Now, realize that I don't want (or need) to release the plugin under GPL (I could always use my own license, free disty or otherwise), but my interpretation (which is one of the main questions) tells me that any plugin for MediaWiki (or Drupal, Xoops, E107, Joomla, etc) has to be GPL (or GPL compatible).