From 733511eda044637cf2f4381ff610f803b55785a0 Mon Sep 17 00:00:00 2001
From: Philip Kaufmann <phil.kaufmann@t-online.de>
Date: Fri, 11 Oct 2013 15:37:36 +0200
Subject: [PATCH] prevent compiler redefinition warnings

- I observed a massive amount of redefinition warnings after #3071, which
  are silenced by this patch
- uses the same style as we do in other places, where we define _WIN32_WINNT
---
 src/compat.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/compat.h b/src/compat.h
index 9caf5e4810..b126df901a 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -6,11 +6,17 @@
 #define _BITCOIN_COMPAT_H
 
 #ifdef WIN32
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
 #define _WIN32_WINNT 0x0501
 #define WIN32_LEAN_AND_MEAN 1
 #ifndef NOMINMAX
 #define NOMINMAX
 #endif
+#ifdef FD_SETSIZE
+#undef FD_SETSIZE // prevent redefinition compiler warning
+#endif
 #define FD_SETSIZE 1024 // max number of fds in fd_set
 #include <winsock2.h>
 #include <ws2tcpip.h>