Steven Edwards wrote:
Find out who the author is if it is not listed in the header and add a LGPL header with a copyright line and submit the headers to wine-patches. Mingw headers are licensed under a BSD/X11 style license so we have no problem including them in wine.
They aren't licenced at all because they aren't copyrighted, they're public domain, that's a bit different from X11/BSD.
Ivan.