diff --git a/configure.ac b/configure.ac
index d7cdf02e02..44e5b201ed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -506,42 +506,6 @@ AX_GCC_FUNC_ATTRIBUTE([returns_nonnull])
 #
 AC_SEARCH_LIBS([sqrt],[m])
 
-#
-# check if we have kqueue
-#
-# [pairwise: --enable-kqueue, --disable-kqueue]
-AC_ARG_ENABLE([kqueue],
-	      [AS_HELP_STRING([--enable-kqueue],
-			      [use BSD kqueue when available [default=yes]])],
-	      [], enable_kqueue="yes")
-
-AS_IF([test "$enable_kqueue" = "yes"],
-      [AC_CHECK_FUNCS([kqueue])])
-
-#
-# check if we have epoll.  Linux kernel 2.4 has epoll_create() which fails,
-# so we need to try running the code, not just test its existence.
-#
-# [pairwise: --enable-epoll, --disable-epoll]
-AC_ARG_ENABLE([epoll],
-	      [AS_HELP_STRING([--enable-epoll],
-			      [use Linux epoll when available [default=auto]])],
-	      [], [enable_epoll="yes"])
-
-AS_IF([test "$enable_epoll" = "yes"],
-      [AC_CHECK_FUNCS([epoll_create1])])
-
-#
-# check if we support /dev/poll
-#
-# [pairwise: --enable-devpoll, --disable-devpoll]
-AC_ARG_ENABLE([devpoll],
-	      [AS_HELP_STRING([--enable-devpoll],
-			      [use /dev/poll when available [default=yes]])],
-	      [], [enable_devpoll="yes"])
-AS_IF([test "$enable_devpoll" = "yes"],
-      [AC_CHECK_HEADERS([sys/devpoll.h devpoll.h])])
-
 #
 # GeoIP support?
 #