From 642a173373e4b0116deb1b6cd0f584cb7c39ca66 Mon Sep 17 00:00:00 2001
From: Dave Love <fx@gnu.org>
Date: Fri, 23 Jun 2000 17:33:37 +0000
Subject: [PATCH] Maybe include unistd.h.

---
 src/ralloc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ralloc.c b/src/ralloc.c
index 183db755412..38adc795a91 100644
--- a/src/ralloc.c
+++ b/src/ralloc.c
@@ -28,7 +28,9 @@ Boston, MA 02111-1307, USA.  */
 
 #include <config.h>
 #include "lisp.h"		/* Needed for VALBITS.  */
-
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 #undef NULL
 
 /* The important properties of this type are that 1) it's a pointer, and
-- 
2.39.2