-/* Polling handling */
-
-/* return TRUE if no sleep should be done afterwards */
-typedef int PollingFunc(void *opaque);
-
-int qemu_add_polling_cb(PollingFunc *func, void *opaque);
-void qemu_del_polling_cb(PollingFunc *func, void *opaque);
-
-/* Wait objects handling */
-typedef void WaitObjectFunc(void *opaque);
+/* Workaround for older versions of MinGW. */
+#ifndef ECONNREFUSED
+# define ECONNREFUSED WSAECONNREFUSED
+#endif
+#ifndef EINPROGRESS
+# define EINPROGRESS WSAEINPROGRESS
+#endif
+#ifndef EHOSTUNREACH
+# define EHOSTUNREACH WSAEHOSTUNREACH
+#endif
+#ifndef EINTR
+# define EINTR WSAEINTR
+#endif
+#ifndef EINPROGRESS
+# define EINPROGRESS WSAEINPROGRESS
+#endif
+#ifndef ENETUNREACH
+# define ENETUNREACH WSAENETUNREACH
+#endif
+#ifndef ENOTCONN
+# define ENOTCONN WSAENOTCONN
+#endif
+#ifndef EWOULDBLOCK
+# define EWOULDBLOCK WSAEWOULDBLOCK
+#endif