diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index b8d103e4ad2f..5bbc3dd287f1 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,7 @@
+2003-10-22  Arnaud Charlet  <charlet@act-europe.fr>
+
+	* mingw32.h: New file.
+
 2003-10-21  Arnaud Charlet  <charlet@act-europe.fr>
 
 	* 3psoccon.ads, 3veacodu.adb, 3vexpect.adb, 3vsoccon.ads,
diff --git a/gcc/ada/mingw32.h b/gcc/ada/mingw32.h
new file mode 100644
index 000000000000..5febcdfa6f77
--- /dev/null
+++ b/gcc/ada/mingw32.h
@@ -0,0 +1,54 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                               M I N G W 3 2                              *
+ *                                                                          *
+ *                              C Header File                               *
+ *                                                                          *
+ *            Copyright (C) 2002, Free Software Foundation, Inc.            *
+ *                                                                          *
+ * GNAT is free software;  you can  redistribute it  and/or modify it under *
+ * terms of the  GNU General Public License as published  by the Free Soft- *
+ * ware  Foundation;  either version 2,  or (at your option) any later ver- *
+ * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
+ * OUT 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  distributed with GNAT;  see file COPYING.  If not, write *
+ * to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, *
+ * MA 02111-1307, USA.                                                      *
+ *                                                                          *
+ * As a  special  exception,  if you  link  this file  with other  files to *
+ * produce an executable,  this file does not by itself cause the resulting *
+ * executable to be covered by the GNU General Public License. This except- *
+ * ion does not  however invalidate  any other reasons  why the  executable *
+ * file might be covered by the  GNU Public License.                        *
+ *                                                                          *
+ * GNAT was originally developed  by the GNAT team at  New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc.      *
+ *                                                                          *
+ ****************************************************************************/
+
+/*  This file provides some macros used for the MINGW32 platform. The main
+    goal is to be able to build GNAT with a standard MINGW32 C header set */
+
+#ifndef _MINGW32_H
+#define _MINGW32_H
+
+#include <stdlib.h>
+
+/* STD_MINGW: standard if MINGW32 version > 1.3, we have switched to this
+   version instead of the previous enhanced version to ease building GNAT on
+   Windows platforms. By using STD_MINGW or OLD_MINGW it is possible to build
+   GNAT using both MingW include files (Old MingW + ACT changes and standard
+   MingW starting with version 1.3. */
+#define STD_MINGW ((__MINGW32_MAJOR_VERSION == 1 \
+		   && __MINGW32_MINOR_VERSION >= 3) \
+     || (__MINGW32_MAJOR_VERSION >= 2))
+
+#define OLD_MINGW (!(STD_MINGW))
+
+#define MAXPATHLEN MAX_PATH
+
+#endif /* _MINGW32_H */