From b3bfb2a1a7ffc190dc37905b073da8d1d3b054ba Mon Sep 17 00:00:00 2001
From: Angel Pons <th3fanbus@gmail.com>
Date: Sun, 1 Mar 2020 15:41:55 +0100
Subject: util/kconfig: Silence warning about _GNU_SOURCE

For some reason, this symbol gets redefined, which causes a warning.
Hide the warning by checking whether it is already defined.

Change-Id: I70ffc9a799e0b536d6aba7d00f828bd6d915d94c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39183
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
---
 util/kconfig/nconf.c | 2 ++
 util/kconfig/regex.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/util/kconfig/nconf.c b/util/kconfig/nconf.c
index 905dcd11bd..42ea494f6b 100644
--- a/util/kconfig/nconf.c
+++ b/util/kconfig/nconf.c
@@ -5,7 +5,9 @@
  * Derived from menuconfig.
  *
  */
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 #include <string.h>
 #include <stdlib.h>
 
diff --git a/util/kconfig/regex.c b/util/kconfig/regex.c
index a6d947fbd0..d0e1d7b2f5 100644
--- a/util/kconfig/regex.c
+++ b/util/kconfig/regex.c
@@ -24,7 +24,9 @@
   #pragma alloca
 #endif
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 /* We need this for `regex.h', and perhaps for the Emacs include files.  */
 #include <sys/types.h>
-- 
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