From 0f4fd0de7532c08bdd77a46f101e5ca1220cd163 Mon Sep 17 00:00:00 2001
From: Jan Beulich <jbeulich@suse.com>
Date: Tue, 19 Jan 2021 16:03:41 +0100
Subject: [PATCH] kconfig: ensure strndup() declaration is visible

Its guard was updated such that it is visible by default when POSIX 2008
was adopted by glibc. It's not visible by default on older glibc.

Fixes: f80fe2b34f08 ("xen: Update Kconfig to Linux v5.4")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Doug Goldstein <cardoe@cardoe.com>
---
 xen/tools/kconfig/parser.y | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/tools/kconfig/parser.y b/xen/tools/kconfig/parser.y
index 60936c7686..822fc89fc8 100644
--- a/xen/tools/kconfig/parser.y
+++ b/xen/tools/kconfig/parser.y
@@ -4,6 +4,7 @@
  */
 %{
 
+#define _GNU_SOURCE
 #include <ctype.h>
 #include <stdarg.h>
 #include <stdio.h>
-- 
2.39.5