Include unistd.h.

src/server/log.c

 /*
- * $Id: log.c,v 0.12 1994/04/05 08:01:53 ceder Exp $
+ * $Id: log.c,v 0.13 1994/08/19 22:04:55 ceder Exp $
  * Copyright (C) 1991, 1992, 1993, 1994  Lysator Academic Computer Association.
  *
  * This file is part of the LysKOM server.
@@ -28,7 +28,7 @@
  * File created by ceder 1990-05-25.
  */
 
-static char *rcsid = "$Id: log.c,v 0.12 1994/04/05 08:01:53 ceder Exp $";
+static char *rcsid = "$Id: log.c,v 0.13 1994/08/19 22:04:55 ceder Exp $";
 #include "rcs.h"
 USE(rcsid);
 
@@ -38,6 +38,7 @@ USE(rcsid);
 #include <stdio.h>
 #include <sys/types.h>
 #include <time.h>
+#include <unistd.h>
 
 #include "log.h"