--- hidapi-hidapi-0.10.1/configure.ac.orig	2020-11-24 12:39:27.000000000 +0100
+++ hidapi-hidapi-0.10.1/configure.ac	2021-04-15 09:39:00.649138600 +0200
@@ -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