@@ -735,10 +735,12 @@
 	AC_CHECK_HEADERS(netinet/in.h, [
 		AC_DEFINE(OF_HAVE_NETINET_IN_H, 1,
 			[Whether we have netinet/in.h])
 	])
 	AC_CHECK_HEADERS([arpa/inet.h netdb.h])
+
+	AC_CHECK_FUNCS([paccept accept4])
 
 	AC_CHECK_FUNC(kqueue, [
 		AC_DEFINE(HAVE_KQUEUE, 1, [Whether we have kqueue])
 		AC_SUBST(OFKERNELEVENTOBSERVER_KQUEUE_M,
 			"OFKernelEventObserver_kqueue.m")