From 8e72374feb08110e407e008b6d4a158158f9fcf1 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Fri, 21 Jan 2022 18:01:23 +0100
Subject: [PATCH] sandbox: eth-raw: fix building with musl library
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The definition of struct udphdr in include netinet/udp.h in the
musl library differs from the definition in the glibc library.

To use the same definition with musl the symbol _GNU_SOURCE has
to be defined.

Reported-by: Milan P. Stanić <mps@arvanta.net>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Tested-by: Milan P. Stanić <mps@arvanta.net>
---
 arch/sandbox/cpu/eth-raw-os.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/sandbox/cpu/eth-raw-os.c b/arch/sandbox/cpu/eth-raw-os.c
index 6a8d809..e59b96b 100644
--- a/arch/sandbox/cpu/eth-raw-os.c
+++ b/arch/sandbox/cpu/eth-raw-os.c
@@ -4,6 +4,8 @@
  * Copyright (c) 2015-2018 Joe Hershberger <joe.hershberger@ni.com>
  */
 
+#define _GNU_SOURCE
+
 #include <asm/eth-raw-os.h>
 #include <errno.h>
 #include <fcntl.h>
-- 
2.7.4