From f0b645bfc7a16c88b6f44b48466b719c786d6644 Mon Sep 17 00:00:00 2001
From: Dave Love <fx@gnu.org>
Date: Fri, 18 Feb 2000 19:47:49 +0000
Subject: [PATCH] Undef feature selection macros before defining.

---
 src/lread.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lread.c b/src/lread.c
index 8b2564c3792..699c7fc2ef9 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -21,7 +21,12 @@ Boston, MA 02111-1307, USA.  */
 
 
 #include <config.h>
+/* The following feature selections should be in config.h, but that
+   causes at best a host of warnings on some systems.  */
+#undef _XOPEN_SOURCE		/* Avoid warnings about redefinition
+				   in some cases.  */
 #define _XOPEN_SOURCE 500	/* for Unix 98 ftello on GNU */
+#undef __EXTENSIONS__
 #define __EXTENSIONS__		/* Keep Solaris 2.6 happy with the
 				   above, else things we need are hidden.  */
 #include <stdio.h>
-- 
2.39.5