diff -ur syslog-ng-syslog-ng-3.22.1.orig/Makefile.am syslog-ng-syslog-ng-3.22.1/Makefile.am
--- syslog-ng-syslog-ng-3.22.1.orig/Makefile.am	2019-06-25 10:51:09.000000000 +0200
+++ syslog-ng-syslog-ng-3.22.1/Makefile.am	2019-08-24 00:15:37.356000000 +0200
@@ -24,7 +24,7 @@
 SUBDIRS			=
 DIST_SUBDIRS		=
 AM_MAKEFLAGS		= --no-print-directory
-AM_YFLAGS		= -Wno-yacc -Wno-other -Werror=conflicts-sr -Werror=conflicts-rr
+AM_YFLAGS		= -Wnone -Werror=conflicts-sr -Werror=conflicts-rr
 
 AM_TESTS_ENVIRONMENT	= top_srcdir="$(top_srcdir)"