diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index cc049d36f20a6faa6f249275cbe1853f276df660..c3b71010f3089ba4739f24be97c104128bc8a4b2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2003-05-21  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	* gthr-win32.h (__GTHREAD_HIDE_WIN32API): Test for non-zero
+	value, not just if defined.
+	Update copyright year.
+
 2003-05-21  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR target/6428
diff --git a/gcc/gthr-win32.h b/gcc/gthr-win32.h
index fe8743a86581e24ae2769b903e32ec8848a8d095..93f157481a3e3bb2d567967e4d447722bf7c6f93 100644
--- a/gcc/gthr-win32.h
+++ b/gcc/gthr-win32.h
@@ -1,6 +1,6 @@
 /* Threads compatibility routines for libgcc2 and libobjc.  */
 /* Compile this one with gcc.  */
-/* Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2000, 2002, 2003  Free Software Foundation, Inc.
    Contributed by Mumit Khan <khan@xraylith.wisc.edu>.
 
 This file is part of GCC.
@@ -365,7 +365,7 @@ __gthread_active_p (void)
 #endif
 }
 
-#ifdef __GTHREAD_HIDE_WIN32API
+#if __GTHREAD_HIDE_WIN32API
 
 /* The implementations are in config/i386/gthr-win32.c in libgcc.a.
    Only stubs are exposed to avoid polluting the C++ namespace with
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 3a3ac682ab6a372fd681847e5d1ab0557af1e834..6d74521ccef28b4439d3d62faf5038ba2088809c 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2003-05-21  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	* libstdc++-v3/config/os/mingw32/os_defines.h (__GTHREAD_HIDE_WIN32API):
+	Define to 1 by defualt.
+	(NOMINMAX): Define.
+	Update copyright year.
+
 2003-05-21  Paolo Carlini  <pcarlini@unitus.it>
 
 	* include/std/std_fstream.h (_M_set_buffer): Fix indentation.
diff --git a/libstdc++-v3/config/os/mingw32/os_defines.h b/libstdc++-v3/config/os/mingw32/os_defines.h
index 5c99e09428cb89e2389c55640d55d2e07d33657f..b93ad27d8810e1e869044f29cb5dae498e30f43a 100644
--- a/libstdc++-v3/config/os/mingw32/os_defines.h
+++ b/libstdc++-v3/config/os/mingw32/os_defines.h
@@ -1,6 +1,6 @@
 // Specific definitions for generic platforms  -*- C++ -*-
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -34,4 +34,15 @@
 // System-specific #define, typedefs, corrections, etc, go here.  This
 // file will come before all others.
 
+//  Define as 0, if you want, to enable inlining of gthread functions.
+//  By default, don't pollute libstdc++ with win32api names.
+#if !defined (__GTHREAD_HIDE_WIN32API)
+# define __GTHREAD_HIDE_WIN32API 1
+#endif
+
+// Don't let win32api windef.h define min and max as macros
+// if included after stl_algobase.h. 
+#undef NOMINMAX
+#define NOMINMAX 1
+
 #endif