3 files changed, 20 insertions, 0 deletions
diff --git a/cpp/src/Ice/Network.cpp b/cpp/src/Ice/Network.cpp
index d3ed3c505ca..9b1094ee0dc 100644
--- a/cpp/src/Ice/Network.cpp
+++ b/cpp/src/Ice/Network.cpp
@@ -17,6 +17,14 @@
 #  include <netinet/in.h>
 #endif
 
+//
+// The following is required for MinGW to bring in
+// some definitions.
+//
+#if defined(__MINGW32__)
+#   define _WIN32_WINNT 0x0501
+#endif
+
 #include <IceUtil/DisableWarnings.h>
 #include <Ice/Network.h>
 #include <IceUtil/StringUtil.h>
diff --git a/cpp/src/Ice/ThreadPool.cpp b/cpp/src/Ice/ThreadPool.cpp
index 8e79614c66e..733adb3df1e 100644
--- a/cpp/src/Ice/ThreadPool.cpp
+++ b/cpp/src/Ice/ThreadPool.cpp
@@ -7,6 +7,14 @@
 //
 // **********************************************************************
 
+//
+// The following is required for MinGW to bring in
+// some definitions.
+//
+#if defined(__MINGW32__)
+#   define _WIN32_WINNT 0x0501
+#endif
+
 #include <Ice/ThreadPool.h>
 #include <IceUtil/DisableWarnings.h>
 #include <Ice/EventHandler.h>
diff --git a/cpp/src/IceUtil/OutputUtil.cpp b/cpp/src/IceUtil/OutputUtil.cpp
index 00464533d98..7ab7ca159f0 100644
--- a/cpp/src/IceUtil/OutputUtil.cpp
+++ b/cpp/src/IceUtil/OutputUtil.cpp
@@ -35,7 +35,11 @@ IceUtilInternal::int64ToString(Int64 val)
 {
     char buf[64];
 #ifdef _WIN32
+#   if defined(_MSC_VER)
     sprintf_s(buf, sizeof(buf), "%I64d", val);
+#   else
+    sprintf(buf, "%I64d", val);
+#   endif
 #elif defined(ICE_64)
     sprintf(buf, "%ld", val); // Avoids a format warning from GCC.
 #else