$OpenBSD: patch-scm_sys_c,v 1.2 2001/02/03 20:42:47 espie Exp $
--- sys.c.orig	Tue Jan 30 10:09:47 2001
+++ sys.c	Tue Jan 30 10:10:32 2001
@@ -72,6 +72,9 @@ SCM	*loc_open_file;		/* for open-file ca
 # ifdef linux
 #  include <unistd.h>
 # endif
+# ifdef __OpenBSD__
+#  include <unistd.h>
+# endif
 #endif
 
 static void gc_sweep P((int contin_bad));
