make: directive-for-lines.mk:31: This is line 31.
make: directive-for-lines.mk:31: This is line 31.
make: directive-for-lines.mk:38: This is line 38.
make: directive-for-lines.mk:31: This is line 31.
make: directive-for-lines.mk:31: This is line 31.
make: directive-for-lines.mk:38: This is line 38.
make: no target to make.

make: stopped in unit-tests
exit status 2