From 988c9151cded60d7bdd6cb3e0063b34ffe9afc5c Mon Sep 17 00:00:00 2001
From: Stéphane Raimbault <stephane.raimbault@gmail.com>
Date: Mon, 16 Nov 2015 21:42:07 +0100
Subject: [PATCH] Define MSG_DONTWAIT to MSG_NONBLOCK on AIX (#294)

---
 src/modbus-tcp.c | 4 ++++
 1 file changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/modbus-tcp.c b/src/modbus-tcp.c
index 00de11c..d19b36a 100644
--- a/src/modbus-tcp.c
+++ b/src/modbus-tcp.c
@@ -46,6 +46,10 @@
 #define MSG_NOSIGNAL 0
 #endif
 
+#if defined(_AIX) && !defined(MSG_DONTWAIT)
+#define MSG_DONTWAIT MSG_NONBLOCK
+#endif
+
 #include "modbus-private.h"
 
 #include "modbus-tcp.h"
--
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