Cross compiling for windows - passing extra include paths to host gcc (Qt5.2.1)

I’m trying to cross compile Qt 5.2.1 from linux (Ubunut 14.04) to windows. The build is failing in a few places when tools (which presumably should run on the build host) try to include <windows.h>. I have this available on my system for the mingw toolchain, but need to pass this location over to regular gcc – is there a switch available for configure to do this? Thanks