From 33646fba5842803cd12c631e806f64b18db7a85a Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Sun, 4 Nov 2001 17:34:31 +0000
Subject: [PATCH] Include unistd.h, if it exists.

---
 src/xfns.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/xfns.c b/src/xfns.c
index bd7894774b7..836e2d4c827 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -24,6 +24,10 @@ Boston, MA 02111-1307, USA.  */
 #include <stdio.h>
 #include <math.h>
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 /* This makes the fields of a Display accessible, in Xlib header files.  */
 
 #define XLIB_ILLEGAL_ACCESS
-- 
2.39.2