From f6866b0f166ad168618aae64c7fbee8775d3eb23 Mon Sep 17 00:00:00 2001
From: mruddy <6440430+mruddy@users.noreply.github.com>
Date: Sat, 30 Jun 2018 09:44:58 -0400
Subject: [PATCH] fix build with older mingw64

---
 src/windows.hpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/windows.hpp b/src/windows.hpp
index 6c3839fd..2c32ec79 100644
--- a/src/windows.hpp
+++ b/src/windows.hpp
@@ -58,6 +58,13 @@
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
+
+#if defined __MINGW64_VERSION_MAJOR && __MINGW64_VERSION_MAJOR < 4
+// Workaround for mingw-w64 < v4.0 which did not include ws2ipdef.h in iphlpapi.h.
+// Fixed in mingw-w64 by 9bd8fe9148924840d315b4c915dd099955ea89d1.
+#include <ws2def.h>
+#include <ws2ipdef.h>
+#endif
 #include <iphlpapi.h>
 
 #if !defined __MINGW32__
-- 
2.17.1