GCC unplugged

GCC unplugged

The problem is that if I write a plugin for GCC, using the published interface to do so, my plugin is mine and mine alone, to do as I wish, unless it contains GCC-derived code (or thereabouts, it is not that clearcut). So I can happily distribute it as closed source for a heavy price, all legally.

Trying to place the use of the interface under strict conditions won't work either, as the idea of a interface is to make such connections possible; and besides as a user of the interface I'm not copying anything anyway, so no copyright interferes.