$OpenBSD: patch-bib_flex_c,v 1.1 2018/11/09 11:06:24 sthen Exp $

Index: bib_flex.c
--- bib_flex.c.orig
+++ bib_flex.c
@@ -1454,6 +1454,7 @@ static const yy_state_type yy_NUL_trans[40] =
 char *yytext;
 # line 1 "b.l"
 # line 2 "b.l"
+#include <unistd.h>
 #include "b.tab.h"
 #include <X11/Intrinsic.h>
 #include "bibview.h"
