--- configure-orig.ac	2020-11-24 13:39:27.000000000 +0200
+++ configure.ac	2021-08-26 20:08:10.000000000 +0300
@@ -13,7 +13,6 @@
 
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([foreign -Wall -Werror])
-AC_CONFIG_MACRO_DIR([m4])
 
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 LT_INIT