Hi! Actually the tst_flush has been removed in: commit eb50f0a9e0c26f3cab8472f47a2ea8171ce5ee52 Author: Michael Moese <mmoese@suse.de> Date: Fri Mar 9 15:16:07 2018 +0100 remove old tst_flush() So the right solution is to remove it from the Makefile. I will commit that, thanks for the report. -- Cyril Hrubis chrubis@suse.cz