This change will only apply to mingw compilers, and has been found
necessary by late versions of the mingw-w64 compiler. It's the same as
what is done elsewhere for the Microsoft compilers.
Backpatch of commit
73838b5251e.
Problem reported by Michael Cronenworth, although not his patch.
#undef EINTR
#define EINTR WSAEINTR
#define EAGAIN WSAEWOULDBLOCK
-#ifndef EMSGSIZE
+#undef EMSGSIZE
#define EMSGSIZE WSAEMSGSIZE
-#endif
-#ifndef EAFNOSUPPORT
+#undef EAFNOSUPPORT
#define EAFNOSUPPORT WSAEAFNOSUPPORT
-#endif
-#ifndef EWOULDBLOCK
+#undef EWOULDBLOCK
#define EWOULDBLOCK WSAEWOULDBLOCK
-#endif
-#ifndef ECONNRESET
+#undef ECONNRESET
#define ECONNRESET WSAECONNRESET
-#endif
-#ifndef EINPROGRESS
+#undef EINPROGRESS
#define EINPROGRESS WSAEINPROGRESS
-#endif
-#ifndef ENOBUFS
+#undef ENOBUFS
#define ENOBUFS WSAENOBUFS
-#endif
-#ifndef EPROTONOSUPPORT
+#undef EPROTONOSUPPORT
#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
-#endif
-#ifndef ECONNREFUSED
+#undef ECONNREFUSED
#define ECONNREFUSED WSAECONNREFUSED
-#endif
-#ifndef EBADFD
+#undef EBADFD
#define EBADFD WSAENOTSOCK
-#endif
-#ifndef EOPNOTSUPP
+#undef EOPNOTSUPP
#define EOPNOTSUPP WSAEOPNOTSUPP
-#endif
/*
* For Microsoft Visual Studio 2010 and above we intentionally redefine