From 6b6076c882a00028197b04a827f6cf8e7a5369de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@isc.org>
Date: Sat, 27 May 2023 08:47:55 +0200
Subject: [PATCH 1/2] Remove obsolete epoll/kqueue/devpoll configure options

Since we don't use networking directly but rather via libuv, these
configure options were no-op.  Remove the configure checks for epoll
(Linux), kqueue (BSDs) and /dev/poll (Solaris).

(cherry picked from commit 051f3d612f83b333ba1ed75199e91a9dbe055bd9)
---
 configure.ac | 36 ------------------------------------
 1 file changed, 36 deletions(-)

diff --git a/configure.ac b/configure.ac
index 5aa4e6824c..4fa9517e4f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -405,42 +405,6 @@ AC_COMPILE_IFELSE(
 #
 AX_GCC_FUNC_ATTRIBUTE([returns_nonnull])
 
-#
-# 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?
 #

From 4fb2c9568da15641f484162f24a2bf28e368af8d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@isc.org>
Date: Sat, 27 May 2023 08:51:47 +0200
Subject: [PATCH 2/2] Add CHANGES note for [GL #4098]

(cherry picked from commit 0266760fdd7c2db329795a1d021ea919f8fe513f)
---
 CHANGES | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CHANGES b/CHANGES
index 09bad51be2..93e1842c4e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+6182.	[cleanup]	Remove configure checks for epoll, kqueue and
+			/dev/poll. [GL #4098]
+
 6181.	[func]		The "tkey-dhkey" option has been deprecated; a
 			warning will be logged when it is used. In a future
 			release, Diffie-Hellman TKEY mode will be removed.