* Makefile.in (INCLUDES): Add "-iwithprefixbefore include" to

	ensure gcc include dir is searched despite -nostdinc.
	* profile/Makefile.in (INCLUDES): Likewise.
	* mingwex/Makefile.in (INCLUDES): Likewise.
	* include/stdarg.h: Replace with stub that just guards the
	real gcc system header with #ifndef RCINVOKED
	* include/varargs.h: Likewise.
	* include/stddef.h: Likewise.
	* include/stdio.h: Include stdarg.h after defining
	 __need___va_list.
	(__VALIST): Define as __gnuc_va_list if __GNUC__, else char*.
	Replace va_list with __VALIST throughout.

8 files changed, 49 insertions, 602 deletions

diff --git a/winsup/mingw/ChangeLog b/winsup/mingw/ChangeLog
index cdfe46e54..8d1fdb065 100644
--- a/winsup/mingw/ChangeLog
+++ b/winsup/mingw/ChangeLog
@@ -1,5 +1,20 @@
 2002-04-17  Danny Smith  <dannysmith@users.sourceforge.net>
 
+	* Makefile.in (INCLUDES): Add "-iwithprefixbefore include" to
+	ensure gcc include dir is searched despite -nostdinc.
+	* profile/Makefile.in (INCLUDES): Likewise.
+	* mingwex/Makefile.in (INCLUDES): Likewise.
+	* include/stdarg.h: Replace with stub that just guards the
+	real gcc system header with #ifndef RCINVOKED
+	* include/varargs.h: Likewise.
+	* include/stddef.h: Likewise.
+	* include/stdio.h: Include stdarg.h after defining
+	 __need___va_list.
+	(__VALIST): Define as __gnuc_va_list if __GNUC__, else char*.
+	Replace va_list with __VALIST throughout.
+
+2002-04-17  Danny Smith  <dannysmith@users.sourceforge.net>
+
 	* crt1.c: Revert changes of 2002-04-16. Use _fpreset again.
 	* msvcrt.def (_fpreset): Mark as DATA so that only
 	_imp___fpreset is exported.
diff --git a/winsup/mingw/Makefile.in b/winsup/mingw/Makefile.in
index 1f9234486..6c81ba8f7 100644
--- a/winsup/mingw/Makefile.in
+++ b/winsup/mingw/Makefile.in
@@ -96,7 +96,8 @@ LIBM_A=@LIBM_A@
 
 INCLUDES = -I$(srcdir)/include -I$(srcdir)/../w32api/include \
   -I$(srcdir)/../include \
-  -nostdinc -nostdinc++
+  -nostdinc -nostdinc++ \
+  -iwithprefixbefore include
 ALL_CFLAGS = $(CFLAGS) $(INCLUDES) $(MNO_CYGWIN)
 ALL_CXXFLAGS = $(CXXFLAGS) $(INCLUDES) $(MNO_CYGWIN)
 
diff --git a/winsup/mingw/include/stdarg.h b/winsup/mingw/include/stdarg.h
index 20169a1fc..90a2d95a0 100644
--- a/winsup/mingw/include/stdarg.h
+++ b/winsup/mingw/include/stdarg.h
@@ -1,112 +1,7 @@
 /*
- * stdarg.h
- *
- * Provides facilities for stepping through a list of function arguments of
- * an unknown number and type.
- *
- * NOTE: Gcc should provide stdarg.h, and I believe their version will work
- *       with crtdll. If necessary I think you can replace this with the GCC
- *       stdarg.h.
- *
- * Note that the type used in va_arg is supposed to match the actual type
- * *after default promotions*. Thus, va_arg (..., short) is not valid.
- *
- * This file is part of the Mingw32 package.
- *
- * Contributors:
- *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
- *
- *  THIS SOFTWARE IS NOT COPYRIGHTED
- *
- *  This source code is offered for use in the public domain. You may
- *  use, modify or distribute it freely.
- *
- *  This code is distributed in the hope that it will be useful but
- *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
- *  DISCLAIMED. This includes but is not limited to warranties of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * $Revision$
- * $Author$
- * $Date$
- *
- */
-
-#ifndef _STDARG_H_
-#define _STDARG_H_
-
-/* All the headers include this file. */
-#include <_mingw.h>
-
-/*
- * Don't do any of this stuff for the resource compiler.
+ * This is just an RC_INVOKED guard for the real stdarg.h
+ * fixincluded in gcc system dir. One day we will delete this file.
  */
 #ifndef RC_INVOKED
-
-/* 
- * I was told that Win NT likes this.
- */
-#ifndef _VA_LIST_DEFINED
-#define _VA_LIST_DEFINED
-#endif
-
-#ifndef	_VA_LIST
-#define _VA_LIST
-#if defined __GNUC__ && __GNUC__ >= 3
-typedef __builtin_va_list va_list;
-#else
-typedef char* va_list;
-#endif
-#endif
-
-/*
- * Amount of space required in an argument list (ie. the stack) for an
- * argument of type t.
- */
-#define __va_argsiz(t)	\
-	(((sizeof(t) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
-
-
-/*
- * Start variable argument list processing by setting AP to point to the
- * argument after pN.
- */
-#ifdef	__GNUC__
-/*
- * In GNU the stack is not necessarily arranged very neatly in order to
- * pack shorts and such into a smaller argument list. Fortunately a
- * neatly arranged version is available through the use of __builtin_next_arg.
- */
-#define va_start(ap, pN)	\
-	((ap) = ((va_list) __builtin_next_arg(pN)))
-#else
-/*
- * For a simple minded compiler this should work (it works in GNU too for
- * vararg lists that don't follow shorts and such).
- */
-#define va_start(ap, pN)	\
-	((ap) = ((va_list) (&pN) + __va_argsiz(pN)))
+#include_next<stdarg.h>
 #endif
-
-
-/*
- * End processing of variable argument list. In this case we do nothing.
- */
-#define va_end(ap)	((void)0)
-
-
-/*
- * Increment ap to the next argument in the list while returing a
- * pointer to what ap pointed to first, which is of type t.
- *
- * We cast to void* and then to t* because this avoids a warning about
- * increasing the alignment requirement.
- */
-
-#define va_arg(ap, t)					\
-	 (((ap) = (ap) + __va_argsiz(t)),		\
-	  *((t*) (void*) ((ap) - __va_argsiz(t))))
-
-#endif /* Not RC_INVOKED */
-
-#endif /* not _STDARG_H_ */
diff --git a/winsup/mingw/include/stddef.h b/winsup/mingw/include/stddef.h
index 7bdc2cfd0..ef9d5ffe4 100644
--- a/winsup/mingw/include/stddef.h
+++ b/winsup/mingw/include/stddef.h
@@ -1,373 +1,7 @@
 /*
- * stddef.h
- *
- * Standard type definitions provided by the C library.
- *
- * NOTE: This is typically supplied by GCC, but there's a small gotcha -
- *       GCC's version doesn't guard typedefs via RC_INVOKED. This is
- *       GCC's version, with the guard macro. Since we install this in
- *       the tool include directory, it gets picked up before GCC's
- *       internal include directory, and we're safe.
- *
- * This file is part of the Mingw32 package.
- *
- * Contributors:
- *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
- *
- *  THIS SOFTWARE IS NOT COPYRIGHTED
- *
- *  This source code is offered for use in the public domain. You may
- *  use, modify or distribute it freely.
- *
- *  This code is distributed in the hope that it will be useful but
- *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
- *  DISCLAIMED. This includes but is not limited to warranties of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
+ * This is just an RC_INVOKED guard for the real stddef.h
+ * fixincluded in gcc system dir.  One day we will delete this file.
  */
-
-#if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \
-     && !defined(__STDDEF_H__)) \
-    || defined(__need_wchar_t) || defined(__need_size_t) \
-    || defined(__need_ptrdiff_t) || defined(__need_NULL) \
-    || defined(__need_wint_t)
-
-/* Any one of these symbols __need_* means that GNU libc
-   wants us just to define one data type.  So don't define
-   the symbols that indicate this file's entire job has been done.  */
-#if (!defined(__need_wchar_t) && !defined(__need_size_t)	\
-     && !defined(__need_ptrdiff_t) && !defined(__need_NULL)	\
-     && !defined(__need_wint_t))
-#define _STDDEF_H
-#define _STDDEF_H_
-/* snaroff@next.com says the NeXT needs this.  */
-#define _ANSI_STDDEF_H
-/* Irix 5.1 needs this.  */
-#define __STDDEF_H__
-#endif
-
 #ifndef RC_INVOKED
-
-#ifndef __sys_stdtypes_h
-/* This avoids lossage on SunOS but only if stdtypes.h comes first.
-   There's no way to win with the other order!  Sun lossage.  */
-
-/* On 4.3bsd-net2, make sure ansi.h is included, so we have
-   one less case to deal with in the following.  */
-#if defined (__BSD_NET2__) || defined (____386BSD____) || defined (__FreeBSD__) || defined(__NetBSD__)
-#include <machine/ansi.h>
-#endif
-
-/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
-   defined if the corresponding type is *not* defined.
-   FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */
-#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
-#if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)
-#define _SIZE_T
-#endif
-#if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)
-#define _PTRDIFF_T
-#endif
-/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
-   instead of _WCHAR_T_. */
-#if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)
-#ifndef _BSD_WCHAR_T_
-#define _WCHAR_T
-#endif
-#endif
-/* Undef _FOO_T_ if we are supposed to define foo_t.  */
-#if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
-#undef _PTRDIFF_T_
-#undef _BSD_PTRDIFF_T_
-#endif
-#if defined (__need_size_t) || defined (_STDDEF_H_)
-#undef _SIZE_T_
-#undef _BSD_SIZE_T_
-#endif
-#if defined (__need_wchar_t) || defined (_STDDEF_H_)
-#undef _WCHAR_T_
-#undef _BSD_WCHAR_T_
-#endif
-#endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */
-
-/* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
-   Just ignore it.  */
-#if defined (__sequent__) && defined (_PTRDIFF_T_)
-#undef _PTRDIFF_T_
-#endif
-
-/* On VxWorks, <type/vxTypesBase.h> may have defined macros like
-   _TYPE_size_t which will typedef size_t.  fixincludes patched the
-   vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
-   not defined, and so that defining this macro defines _GCC_SIZE_T.
-   If we find that the macros are still defined at this point, we must
-   invoke them so that the type is defined as expected.  */
-#if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_))
-_TYPE_ptrdiff_t;
-#undef _TYPE_ptrdiff_t
-#endif
-#if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_))
-_TYPE_size_t;
-#undef _TYPE_size_t
-#endif
-#if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_))
-_TYPE_wchar_t;
-#undef _TYPE_wchar_t
-#endif
-
-/* In case nobody has defined these types, but we aren't running under
-   GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
-   __WCHAR_TYPE__ have reasonable values.  This can happen if the
-   parts of GCC is compiled by an older compiler, that actually
-   include gstddef.h, such as collect2.  */
-
-/* Signed type of difference of two pointers.  */
-
-/* Define this type if we are doing the whole job,
-   or if we want this type in particular.  */
-#if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
-#ifndef _PTRDIFF_T	/* in case <sys/types.h> has defined it. */
-#ifndef _T_PTRDIFF_
-#ifndef _T_PTRDIFF
-#ifndef __PTRDIFF_T
-#ifndef _PTRDIFF_T_
-#ifndef _BSD_PTRDIFF_T_
-#ifndef ___int_ptrdiff_t_h
-#ifndef _GCC_PTRDIFF_T
-#define _PTRDIFF_T
-#define _T_PTRDIFF_
-#define _T_PTRDIFF
-#define __PTRDIFF_T
-#define _PTRDIFF_T_
-#define _BSD_PTRDIFF_T_
-#define ___int_ptrdiff_t_h
-#define _GCC_PTRDIFF_T
-#ifndef __PTRDIFF_TYPE__
-#define __PTRDIFF_TYPE__ long int
-#endif
-typedef __PTRDIFF_TYPE__ ptrdiff_t;
-#endif /* _GCC_PTRDIFF_T */
-#endif /* ___int_ptrdiff_t_h */
-#endif /* _BSD_PTRDIFF_T_ */
-#endif /* _PTRDIFF_T_ */
-#endif /* __PTRDIFF_T */
-#endif /* _T_PTRDIFF */
-#endif /* _T_PTRDIFF_ */
-#endif /* _PTRDIFF_T */
-
-/* If this symbol has done its job, get rid of it.  */
-#undef	__need_ptrdiff_t
-
-#endif /* _STDDEF_H or __need_ptrdiff_t.  */
-
-/* Unsigned type of `sizeof' something.  */
-
-/* Define this type if we are doing the whole job,
-   or if we want this type in particular.  */
-#if defined (_STDDEF_H) || defined (__need_size_t)
-#ifndef __size_t__	/* BeOS */
-#ifndef _SIZE_T	/* in case <sys/types.h> has defined it. */
-#ifndef _SYS_SIZE_T_H
-#ifndef _T_SIZE_
-#ifndef _T_SIZE
-#ifndef __SIZE_T
-#ifndef _SIZE_T_
-#ifndef _BSD_SIZE_T_
-#ifndef _SIZE_T_DEFINED_
-#ifndef _SIZE_T_DEFINED
-#ifndef ___int_size_t_h
-#ifndef _GCC_SIZE_T
-#ifndef _SIZET_
-#ifndef __size_t
-#define __size_t__	/* BeOS */
-#define _SIZE_T
-#define _SYS_SIZE_T_H
-#define _T_SIZE_
-#define _T_SIZE
-#define __SIZE_T
-#define _SIZE_T_
-#define _BSD_SIZE_T_
-#define _SIZE_T_DEFINED_
-#define _SIZE_T_DEFINED
-#define ___int_size_t_h
-#define _GCC_SIZE_T
-#define _SIZET_
-#define __size_t
-#ifndef __SIZE_TYPE__
-#define __SIZE_TYPE__ long unsigned int
-#endif
-#if !(defined (__GNUG__) && defined (size_t))
-typedef __SIZE_TYPE__ size_t;
-#ifdef __BEOS__
-typedef long ssize_t;
-#endif /* __BEOS__ */
-#endif /* !(defined (__GNUG__) && defined (size_t)) */
-#endif /* __size_t */
-#endif /* _SIZET_ */
-#endif /* _GCC_SIZE_T */
-#endif /* ___int_size_t_h */
-#endif /* _SIZE_T_DEFINED */
-#endif /* _SIZE_T_DEFINED_ */
-#endif /* _BSD_SIZE_T_ */
-#endif /* _SIZE_T_ */
-#endif /* __SIZE_T */
-#endif /* _T_SIZE */
-#endif /* _T_SIZE_ */
-#endif /* _SYS_SIZE_T_H */
-#endif /* _SIZE_T */
-#endif /* __size_t__ */
-#undef	__need_size_t
-#endif /* _STDDEF_H or __need_size_t.  */
-
-/* Wide character type.
-   Locale-writers should change this as necessary to
-   be big enough to hold unique values not between 0 and 127,
-   and not (wchar_t) -1, for each defined multibyte character.  */
-
-/* Define this type if we are doing the whole job,
-   or if we want this type in particular.  */
-#if defined (_STDDEF_H) || defined (__need_wchar_t)
-#ifndef __wchar_t__	/* BeOS */
-#ifndef _WCHAR_T
-#ifndef _T_WCHAR_
-#ifndef _T_WCHAR
-#ifndef __WCHAR_T
-#ifndef _WCHAR_T_
-#ifndef _BSD_WCHAR_T_
-#ifndef _WCHAR_T_DEFINED_
-#ifndef _WCHAR_T_DEFINED
-#ifndef _WCHAR_T_H
-#ifndef ___int_wchar_t_h
-#ifndef __INT_WCHAR_T_H
-#ifndef _GCC_WCHAR_T
-#define __wchar_t__	/* BeOS */
-#define _WCHAR_T
-#define _T_WCHAR_
-#define _T_WCHAR
-#define __WCHAR_T
-#define _WCHAR_T_
-#define _BSD_WCHAR_T_
-#define _WCHAR_T_DEFINED_
-#define _WCHAR_T_DEFINED
-#define _WCHAR_T_H
-#define ___int_wchar_t_h
-#define __INT_WCHAR_T_H
-#define _GCC_WCHAR_T
-
-/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
-   instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other
-   symbols in the _FOO_T_ family, stays defined even after its
-   corresponding type is defined).  If we define wchar_t, then we
-   must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
-   we undef _WCHAR_T_, then we must also define rune_t, since 
-   headers like runetype.h assume that if machine/ansi.h is included,
-   and _BSD_WCHAR_T_ is not defined, then rune_t is available.
-   machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
-   the same type." */
-#ifdef _BSD_WCHAR_T_
-#undef _BSD_WCHAR_T_
-#ifdef _BSD_RUNE_T_
-#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
-typedef _BSD_RUNE_T_ rune_t;
-#endif
-#endif
-#endif
-
-#ifndef __WCHAR_TYPE__
-#ifdef __BEOS__
-#define __WCHAR_TYPE__ unsigned char
-#else
-#define __WCHAR_TYPE__ int
-#endif
-#endif
-#ifndef __cplusplus
-typedef __WCHAR_TYPE__ wchar_t;
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif /* __wchar_t__ */
-#undef	__need_wchar_t
-#endif /* _STDDEF_H or __need_wchar_t.  */
-
-#if defined (_STDDEF_H) || defined (__need_wint_t)
-#ifndef _WINT_T
-#define _WINT_T
-
-#ifndef __WINT_TYPE__
-#define __WINT_TYPE__ unsigned int
-#endif
-typedef __WINT_TYPE__ wint_t;
-#endif
-#undef __need_wint_t
-#endif
-
-/*  In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
-    are already defined.  */
-/*  BSD/OS 3.1 requires the MACHINE_ANSI_H check here.  FreeBSD 2.x apparently
-    does not, even though there is a check for MACHINE_ANSI_H above.  */
-#if defined(_ANSI_H_) || (defined(__bsdi__) && defined(_MACHINE_ANSI_H_))
-/*  The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
-    are probably typos and should be removed before 2.8 is released.  */
-#ifdef _GCC_PTRDIFF_T_
-#undef _PTRDIFF_T_
-#undef _BSD_PTRDIFF_T_
-#endif
-#ifdef _GCC_SIZE_T_
-#undef _SIZE_T_
-#undef _BSD_SIZE_T_
-#endif
-#ifdef _GCC_WCHAR_T_
-#undef _WCHAR_T_
-#undef _BSD_WCHAR_T_
-#endif
-/*  The following ones are the real ones.  */
-#ifdef _GCC_PTRDIFF_T
-#undef _PTRDIFF_T_
-#undef _BSD_PTRDIFF_T_
-#endif
-#ifdef _GCC_SIZE_T
-#undef _SIZE_T_
-#undef _BSD_SIZE_T_
-#endif
-#ifdef _GCC_WCHAR_T
-#undef _WCHAR_T_
-#undef _BSD_WCHAR_T_
+#include_next<stddef.h>
 #endif
-#endif /* _ANSI_H_ || ( __bsdi__ && _MACHINE_ANSI_H_ ) */
-
-#endif /* __sys_stdtypes_h */
-
-#endif /* RC_INVOKED */
-
-/* A null pointer constant.  */
-
-#if defined (_STDDEF_H) || defined (__need_NULL)
-#undef NULL		/* in case <stdio.h> has defined it. */
-#ifdef __GNUG__
-#define NULL __null
-#else   /* G++ */
-#define NULL ((void *)0)
-#endif  /* G++ */
-#endif	/* NULL not defined and <stddef.h> or need NULL.  */
-#undef	__need_NULL
-
-#ifdef _STDDEF_H
-
-/* Offset of member MEMBER in a struct of type TYPE.  */
-
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-
-#endif /* _STDDEF_H was defined this time */
-
-#endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__
-	  || __need_XXX was not defined before */
diff --git a/winsup/mingw/include/stdio.h b/winsup/mingw/include/stdio.h
index 7a09250fb..88433d340 100644
--- a/winsup/mingw/include/stdio.h
+++ b/winsup/mingw/include/stdio.h
@@ -34,12 +34,14 @@
 /* All the headers include this file. */
 #include <_mingw.h>
 
+#ifndef RC_INVOKED
 #define __need_size_t
 #define __need_NULL
 #define __need_wchar_t
 #define	__need_wint_t
-#ifndef RC_INVOKED
 #include <stddef.h>
+#define __need___va_list
+#include <stdarg.h>
 #endif	/* Not RC_INVOKED */
 
 
@@ -122,19 +124,12 @@
 
 #ifndef	RC_INVOKED
 
-/*
- * I used to include stdarg.h at this point, in order to allow for the
- * functions later on in the file which use va_list. That conflicts with
- * using stdio.h and varargs.h in the same file, so I do the typedef myself.
- */
-#ifndef	_VA_LIST
-#define _VA_LIST
-#if defined __GNUC__ && __GNUC__ >= 3
-typedef __builtin_va_list va_list;
+#ifdef __GNUC__
+#define __VALIST __gnuc_va_list
 #else
-typedef char* va_list;
-#endif
+#define __VALIST char*
 #endif
+
 /*
  * The structure underlying the FILE type.
  *
@@ -211,15 +206,15 @@ int	fprintf (FILE*, const char*, ...);
 int	printf (const char*, ...);
 int	sprintf (char*, const char*, ...);
 int	_snprintf (char*, size_t, const char*, ...);
-int	vfprintf (FILE*, const char*, va_list);
-int	vprintf (const char*, va_list);
-int	vsprintf (char*, const char*, va_list);
-int	_vsnprintf (char*, size_t, const char*, va_list);
+int	vfprintf (FILE*, const char*, __VALIST);
+int	vprintf (const char*, __VALIST);
+int	vsprintf (char*, const char*, __VALIST);
+int	_vsnprintf (char*, size_t, const char*, __VALIST);
 
 #ifndef __NO_ISOCEXT  /* externs in libmingwex.a */
 int snprintf(char* s, size_t n, const char*  format, ...);
 extern inline int vsnprintf (char* s, size_t n, const char* format,
-			   va_list arg)
+			   __VALIST arg)
   { return _vsnprintf ( s, n, format, arg); }
 #endif
 
@@ -340,10 +335,10 @@ int	fwprintf (FILE*, const wchar_t*, ...);
 int	wprintf (const wchar_t*, ...);
 int	swprintf (wchar_t*, const wchar_t*, ...);
 int	_snwprintf (wchar_t*, size_t, const wchar_t*, ...);
-int	vfwprintf (FILE*, const wchar_t*, va_list);
-int	vwprintf (const wchar_t*, va_list);
-int	vswprintf (wchar_t*, const wchar_t*, va_list);
-int	_vsnwprintf (wchar_t*, size_t, const wchar_t*, va_list);
+int	vfwprintf (FILE*, const wchar_t*, __VALIST);
+int	vwprintf (const wchar_t*, __VALIST);
+int	vswprintf (wchar_t*, const wchar_t*, __VALIST);
+int	_vsnwprintf (wchar_t*, size_t, const wchar_t*, __VALIST);
 int	fwscanf (FILE*, const wchar_t*, ...);
 int	wscanf (const wchar_t*, ...);
 int	swscanf (const wchar_t*, const wchar_t*, ...);
@@ -372,9 +367,9 @@ FILE*	_wpopen (const wchar_t*, const wchar_t*);
 
 #ifndef __NO_ISOCEXT  /* externs in libmingwex.a */
 int snwprintf(wchar_t* s, size_t n, const wchar_t*  format, ...);
-extern inline int vsnwprintf (wchar_t* s, size_t n, const wchar_t* format,
-			   va_list arg)
-  { return _vsnwprintf ( s, n, format, arg); }
+extern inline int
+vsnwprintf (wchar_t* s, size_t n, const wchar_t* format, __VALIST arg)
+  { return _vsnwprintf ( s, n, format, arg);}
 #endif
 
 #define _WSTDIO_DEFINED
diff --git a/winsup/mingw/include/varargs.h b/winsup/mingw/include/varargs.h
index f81c864bc..c1197e97e 100644
--- a/winsup/mingw/include/varargs.h
+++ b/winsup/mingw/include/varargs.h
@@ -1,102 +1,7 @@
 /*
- * varargs.h
- *
- * Old, non-ANSI facilities for stepping through a list of function
- * arguments of an unknown number and type.
- * TODO: Has not been tested. Essentially it copies the GCC version.
- *
- * NOTE: I believe GCC supplies a version of this header as well (in
- *       addition to stdarg.h and others). The GCC version is more
- *       complex, to deal with many alternate systems, but it is
- *       probably more trustworthy overall. It would probably be
- *       better to use the GCC version.
- *
- * NOTE: These are incompatible with the versions in stdarg.h and should
- *       NOT be mixed! All new code should use the ANSI compatible versions.
- *
- * This file is part of the Mingw32 package.
- *
- * Contributors:
- *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
- *
- *  THIS SOFTWARE IS NOT COPYRIGHTED
- *
- *  This source code is offered for use in the public domain. You may
- *  use, modify or distribute it freely.
- *
- *  This code is distributed in the hope that it will be useful but
- *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
- *  DISCLAIMED. This includes but is not limited to warranties of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * $Revision$
- * $Author$
- * $Date$
- *
+ * This is just an RC_INVOKED guard for the real varargs.h
+ * fixincluded in gcc system dir.  One day we will delete this file.
  */
-
-#ifndef	__STRICT_ANSI__
-
-#ifndef _VARARGS_H_
-#define _VARARGS_H_
-
-/* All the headers include this file. */
-#include <_mingw.h>
-
-/* 
- * I was told that Win NT likes this.
- */
-#ifndef _VA_LIST_DEFINED
-#define _VA_LIST_DEFINED
-#endif
-
 #ifndef RC_INVOKED
-
-#ifndef	_VA_LIST
-#define _VA_LIST
-#if defined __GNUC__ && __GNUC__ >= 3
-typedef __builtin_va_list va_list;
-#else
-typedef char* va_list;
-#endif
+#include_next<varargs.h>
 #endif
-
-/*
- * Amount of space required in an argument list (ie. the stack) for an
- * argument of type t.
- */
-#define __va_argsiz(t)	\
-	(((sizeof(t) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
-
-#define	va_alist	__builtin_va_alist
-
-/*
- * Used in old style argument lists IIRC. The ellipsis forces the compiler
- * to realize this is a vararg function.
- */
-#define va_dcl		int __builtin_va_alist; ...
-
-#define va_start(ap)	\
-	((ap) = ((va_list) &__builtin_va_alist))
-#define va_end(ap)	((void)0)
-
-
-/*
- * Increment ap to the next argument in the list while returing a
- * pointer to what ap pointed to first, which is of type t.
- *
- * We cast to void* and then to t* because this avoids a warning about
- * increasing the alignment requirement.
- */
-
-#define va_arg(ap, t)					\
-	 (((ap) = (ap) + __va_argsiz(t)),		\
-	  *((t*) (void*) ((ap) - __va_argsiz(t))))
-
-
-#endif	/* Not RC_INVOKED */
-
-#endif	/* Not _VARARGS_H_ */
-
-#endif	/* Not __STRICT_ANSI__ */
-
diff --git a/winsup/mingw/mingwex/Makefile.in b/winsup/mingw/mingwex/Makefile.in
index a358c06b7..ea79fbabc 100644
--- a/winsup/mingw/mingwex/Makefile.in
+++ b/winsup/mingw/mingwex/Makefile.in
@@ -98,7 +98,8 @@ MNO_CYGWIN = @MNO_CYGWIN@
 
 INCLUDES = -I$(srcdir) -I$(srcdir)/../include \
   -I$(srcdir)/../../w32api/include \
-  -nostdinc -nostdinc++
+  -nostdinc -nostdinc++ \
+  -iwithprefixbefore include
 ALL_CFLAGS = $(CFLAGS) $(OPTFLAGS) $(INCLUDES) $(MNO_CYGWIN)
 ALL_CXXFLAGS = $(CXXFLAGS) $(OPTFLAGS) $(INCLUDES) $(MNO_CYGWIN)
 
diff --git a/winsup/mingw/profile/Makefile.in b/winsup/mingw/profile/Makefile.in
index eb89fe24d..c7f3a0c7f 100644
--- a/winsup/mingw/profile/Makefile.in
+++ b/winsup/mingw/profile/Makefile.in
@@ -49,7 +49,8 @@ THREAD_DLL_NAME = $(THREAD_DLL)$(THREAD_DLL_VERSION).dll
 
 INCLUDES = -I$(srcdir) -I$(srcdir)/../include \
   -I$(srcdir)/../../w32api/include \
-  -nostdinc -nostdinc++
+  -nostdinc -nostdinc++ \
+  -iwithprefixbefore include
 ALL_CFLAGS = $(CFLAGS) $(INCLUDES) $(MNO_CYGWIN)
 ALL_CXXFLAGS = $(CXXFLAGS) $(INCLUDES) $(MNO_CYGWIN)