--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/i386/mingw-w64.h	Fri Feb 12 23:39:51 2010 +0900
@@ -0,0 +1,65 @@
+/* Operating system specific defines to be used when targeting GCC for
+   hosting on Windows 32/64 via mingw-w64 runtime, using GNU tools and
+   the Windows API Library.
+   Copyright (C) 2009,
+   2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Enable -municode feature.  */
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT} \
+  %{municode:-DUNICODE}"
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "%{shared|mdll:dllcrt2%O%s} \
+  %{!shared:%{!mdll:%{!municode:crt2%O%s}}} \
+  %{!shared:%{!mdll:%{municode:crt2u%O%s}}} \
+  %{pg:gcrt2%O%s} \
+  crtbegin.o%s"
+
+/* Enable multilib.  */
+
+#undef ASM_SPEC
+#define ASM_SPEC "%{v:-v} %{n} %{T} %{Ym,*} %{Yd,*} \
+ %{Wa,*:%*} %{m32:--32} %{m64:--64}"
+
+#if TARGET_64BIT_DEFAULT
+#define SPEC_32 "m32"
+#define SPEC_64 "!m32"
+#else
+#define SPEC_32 "!m64"
+#define SPEC_64 "m64"
+#endif
+
+#define SUB_LINK_SPEC "%{" SPEC_64 ":-m i386pep} %{" SPEC_32 ":-m i386pe}"
+
+#if TARGET_64BIT_DEFAULT
+#define MULTILIB_DEFAULTS { "m64" }
+#else
+#define MULTILIB_DEFAULTS { "m32" }
+#endif
+
+#undef LINK_SPEC
+#define LINK_SPEC SUB_LINK_SPEC " %{mwindows:--subsystem windows} \
+  %{mconsole:--subsystem console} \
+  %{shared: %{mdll: %eshared and mdll are not compatible}} \
+  %{shared: --shared} %{mdll:--dll} \
+  %{static:-Bstatic} %{!static:-Bdynamic} \
+  %{shared|mdll: -e _DllMainCRTStartup@12 --enable-auto-image-base} \
+  %(shared_libgcc_undefs)"