--- toolchain.eclass.old	2009-03-23 19:53:45.000000000 +0100
+++ toolchain.eclass	2009-03-23 20:28:41.000000000 +0100
@@ -1344,7 +1344,11 @@
 			*-klibc)		 needed_libc=klibc;;
 			*-uclibc*)		 needed_libc=uclibc;;
 			*-cygwin)        needed_libc=cygwin;;
-			mingw*|*-mingw*) needed_libc=mingw-runtime;;
+			mingw*|*-mingw*) needed_libc=mingw-runtime
+					 # Bug #156767: Need mingw system include path before
+					 # gcc include path due to Windows-specific <float.h>
+					 # that has to be included first.
+					 confgcc="${confgcc} --with-local-prefix=\"/mingw\"" ;;
 			avr)			 confgcc="${confgcc} --enable-shared --disable-threads";;
 		esac
 		if [[ -n ${needed_libc} ]] ; then