From a0613c61ed1c474ee4e26a41cbb8915dd7a0d1c3 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Mon, 27 Apr 1998 09:22:29 +0000
Subject: [PATCH] Include <unistd.h> for chdir.

---
 lib-src/make-docfile.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib-src/make-docfile.c b/lib-src/make-docfile.c
index 9fe30bd6c34..82e7f7c4efd 100644
--- a/lib-src/make-docfile.c
+++ b/lib-src/make-docfile.c
@@ -63,6 +63,10 @@ int scan_c_file ();
 #undef chdir
 #endif
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 /* Stdio stream for output to the DOC file.  */
 FILE *outfile;
 
-- 
2.39.2