Created attachment 207313 [details] ECHO_CMD replacement ${ECHO} is a make(1) builtin which is empty when "-s" is used. For functional build modifications ${ECHO_CMD} must be used, because the build fails otherwise.
A commit references this bug: Author: tobik Date: Mon Sep 9 11:01:14 UTC 2019 New revision: 511620 URL: https://svnweb.freebsd.org/changeset/ports/511620 Log: emulators/virtualbox-ose*: Use ECHO_CMD not ECHO per bsd.commands.mk - Unbreak `make -s` builds PR: 240433, 240426 Submitted by: Franco Fichtner <franco@opnsense.org> (based on) Changes: head/emulators/virtualbox-ose/Makefile head/emulators/virtualbox-ose-additions/Makefile head/emulators/virtualbox-ose-kmod/Makefile