diff -r 1dee2330aa78 -r 544c478362c2 AMBuildScript
--- a/AMBuildScript	Tue Jan 01 16:28:34 2013 -0800
+++ b/AMBuildScript	Tue Jan 01 20:06:25 2013 -0800
@@ -87,6 +87,7 @@
 					self.compiler.AddToListVar('POSTLINKFLAGS', '/NODEFAULTLIB:libcmt')
 				else:
 					self.compiler.AddToListVar('CFLAGS', '/MT')
+				self.compiler.AddToListVar('CDEFINES', 'WIN32')
 				self.compiler.AddToListVar('CDEFINES', '_CRT_SECURE_NO_DEPRECATE')
 				self.compiler.AddToListVar('CDEFINES', '_CRT_SECURE_NO_WARNINGS')
 				self.compiler.AddToListVar('CDEFINES', '_CRT_NONSTDC_NO_DEPRECATE')