/* -----------------------------------------------------------------------------
- * $Id: PatErrorHdr.c,v 1.2 1998/12/02 13:29:15 simonm Exp $
+ * $Id: PatErrorHdr.c,v 1.3 2002/07/17 09:21:51 simonmar Exp $
*
* User-overridable RTS hooks.
*
#include "Rts.h"
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
void
PatErrorHdrHook (long fd)
{