make: directive-warning.mk:10: Unknown directive "warn"
make: directive-warning.mk:12: Unknown directive "warn"
make: directive-warning.mk:14: Unknown directive "warnin"
make: directive-warning.mk:16: Unknown directive "warnin"
make: directive-warning.mk:18: Missing argument for ".warning"
make: directive-warning.mk:19: warning: message
make: directive-warning.mk:21: Unknown directive "warnings"
make: directive-warning.mk:23: Unknown directive "warnings"
make: Fatal errors encountered -- cannot continue
make: stopped making "all" in unit-tests
exit status 1