From 7b5b1ba59f3f0130ca8dfe4f04564d3b53447a33 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Sat, 30 Dec 2023 08:29:23 +1100
Subject: [PATCH] AP_HAL: fixed build without MSG_NOSIGNAL

for older MacOSX
---
 libraries/AP_HAL/utility/Socket.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/AP_HAL/utility/Socket.cpp b/libraries/AP_HAL/utility/Socket.cpp
index b27a3195d0..363b144d67 100644
--- a/libraries/AP_HAL/utility/Socket.cpp
+++ b/libraries/AP_HAL/utility/Socket.cpp
@@ -29,6 +29,10 @@
 #define CALL_PREFIX(x) ::x
 #endif
 
+#ifndef MSG_NOSIGNAL
+#define MSG_NOSIGNAL 0
+#endif
+
 /*
   constructor
  */