From fec95720138142ca09f342ca4ee0976aba3b173a Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 15 Nov 1997 19:43:06 +0000
Subject: [PATCH] include unistd.h

---
 m4/mktime.m4 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/m4/mktime.m4 b/m4/mktime.m4
index c82183024..45d899af4 100644
--- a/m4/mktime.m4
+++ b/m4/mktime.m4
@@ -26,6 +26,10 @@ changequote(<<, >>)dnl
 # endif
 #endif
 
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
 #if !HAVE_ALARM
 # define alarm(X) /* empty */
 #endif