diff --git a/include/ntfs/compat.h b/include/ntfs/compat.h
index e69de29b..866f6ae7 100644
--- a/include/ntfs/compat.h
+++ b/include/ntfs/compat.h
@@ -0,0 +1,52 @@
+/*
+ * compat.h - Tweaks for Windows compatability.
+ *
+ * Copyright (c) 2002 Richard Russon
+ * Copyright (c) 2002-2004 Anton Altaparmakov
+ *
+ * This program/include file 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file 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 this program (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_COMPAT_H
+#define _NTFS_COMPAT_H
+
+#include "config.h"
+
+#ifdef WINDOWS
+
+#ifndef HAVE_FFS
+#define HAVE_FFS
+extern int ffs(int i);
+#endif /* HAVE_FFS */
+
+#define HAVE_STDIO_H		/* mimic config.h */
+#define HAVE_STDARG_H
+
+#define atoll			_atoi64
+#define fdatasync		commit
+#define __inline__		inline
+#define __attribute__(X)	/*nothing*/
+
+#else /* !defined WINDOWS */
+
+#ifndef O_BINARY
+#define O_BINARY		0		/* unix is binary by default */
+#endif
+
+#endif /* defined WINDOWS */
+
+#endif /* defined _NTFS_COMPAT_H */
+