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+/* Copyright (C) 2001-2006 Artifex Software, Inc.
+ All Rights Reserved.
+
+ This software is provided AS-IS with no warranty, either express or
+ implied.
+
+ This software is distributed under license and may not be copied, modified
+ or distributed except as expressly authorized under the terms of that
+ license. Refer to licensing information at http://www.artifex.com/
+ or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
+ San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information.
+*/
+/* $Id$ */
+/* Generic substitute for Unix errno.h */
+
+#ifndef errno__INCLUDED
+# define errno__INCLUDED
+
+/* We must include std.h before any file that includes sys/types.h. */
+#include "std.h"
+
+/* All environments provide errno.h, but in some of them, errno.h */
+/* only defines the error numbers, and doesn't declare errno. */
+#include <errno.h>
+#ifndef errno /* in case it was #defined (very implausible!) */
+extern int errno;
+
+#endif
+
+#endif /* errno__INCLUDED */