Alloca problem in CYGWIN ( MinGW Mode )

Hello !

CYGWIN has an alloca.h, but only as a part of the CYGWIN Mode.
The MinGW Part has no alloca.h

It would be cool if the detection could be fixed by somebody.

This is a longstanding problem :

http://article.gmane.org/gmane.comp.lib.sdl/18083/match=alloca+cygwin

CU