automake has warnings, it is ok here.

--- configure.ac.orig	2020-05-10 23:44:14 UTC
+++ configure.ac
@@ -56,7 +56,7 @@ AC_DEFINE_UNQUOTED([PACKAGE_CONFIGARGS], ["$bind_CONFI
 AC_DEFINE([PACKAGE_BUILDER], ["make"], [make or Visual Studio])
 
 AC_CONFIG_SRCDIR([bin/named/main.c])
-AM_INIT_AUTOMAKE([1.9 tar-pax foreign subdir-objects dist-xz no-dist-gzip -Wall -Werror])
+AM_INIT_AUTOMAKE([1.9 tar-pax foreign subdir-objects dist-xz no-dist-gzip -Wall])
 AM_SILENT_RULES([yes])
 AM_EXTRA_RECURSIVE_TARGETS([test unit doc])