diff -urNp -x '*.orig' syslog-ng-3.29.1.org/configure.ac syslog-ng-3.29.1/configure.ac
--- syslog-ng-3.29.1.org/configure.ac	2020-08-28 14:08:43.000000000 +0200
+++ syslog-ng-3.29.1/configure.ac	2021-02-28 14:26:43.099448649 +0100
@@ -765,11 +765,10 @@ fi
 dnl ***************************************************************************
 dnl Checks for libraries
 AC_CHECK_LIB(door, door_create, BASE_LIBS="$BASE_LIBS -ldoor")
-AC_CHECK_LIB(socket, socket, BASE_LIBS="$BASE_LIBS -lsocket")
+AC_CHECK_FUNC([socket], [:], [AC_CHECK_LIB(socket, socket, BASE_LIBS="$BASE_LIBS -lsocket")])
 AC_CHECK_LIB(rt, nanosleep, BASE_LIBS="$BASE_LIBS -lrt")
-AC_CHECK_FUNC(gethostbyname, [], AC_CHECK_LIB(nsl, gethostbyname, BASE_LIBS="$BASE_LIBS -lnsl"))
-AC_CHECK_LIB(regex, regexec, REGEX_LIBS="-lregex")
-AC_CHECK_LIB(resolv, res_init, RESOLV_LIBS="-lresolv")
+AC_CHECK_FUNC([gethostbyname], [:], [AC_CHECK_LIB(nsl, gethostbyname, BASE_LIBS="$BASE_LIBS -lnsl")])
+AC_CHECK_FUNC([regexec], [:], [AC_CHECK_LIB(regex, regexec, REGEX_LIBS="-lregex")])
 
 AC_CHECK_FUNCS(strdup		\
 	strtol			\