From 1dd86292270bc536a6d87f40c388b8b55def1623 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Sat, 2 Feb 2019 07:42:53 +0000
Subject: [PATCH] Define socket constants on MinGW if missing

---
 src/network/core/os_abstraction.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/network/core/os_abstraction.h b/src/network/core/os_abstraction.h
index 32c6cffff2..5307e7321b 100644
--- a/src/network/core/os_abstraction.h
+++ b/src/network/core/os_abstraction.h
@@ -39,6 +39,19 @@ typedef unsigned long in_addr_t;
 	typedef int socklen_t;
 #	define IPPROTO_IPV6 41
 #endif /* !(__MINGW32__ && __CYGWIN__) */
+
+#if defined(__MINGW32__)
+#ifndef AI_ADDRCONFIG
+#define AI_ADDRCONFIG 0x400
+#endif
+#ifndef IPPROTO_IPV6
+#define IPPROTO_IPV6 41
+#endif
+#ifndef IPV6_V6ONLY
+#define IPV6_V6ONLY 27
+#endif
+#endif /* __MINGW32__ */
+
 #endif /* _WIN32 */
 
 /* UNIX stuff */