diff -ur libevent-2.1.8-stable.orig/configure.ac libevent-2.1.8-stable/configure.ac
--- libevent-2.1.8-stable.orig/configure.ac	2017-01-29 17:51:00.000000000 +0000
+++ libevent-2.1.8-stable/configure.ac	2020-03-07 01:11:16.311335005 +0000
@@ -389,6 +389,10 @@
 		#ifdef HAVE_NETDB_H
 		#include <netdb.h>
 		#endif
+#ifdef _WIN32
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
 	    ]],
 	    [[
 		getaddrinfo;
Only in libevent-2.1.8-stable: configure.ac~