1
2EMPTY=
3
4check-empty:
5	@${MAKE} -f ${MAKEFILE} do-$@
6	@${MAKE} -f ${MAKEFILE} -j2 do-$@
7	@${MAKE} -f ${MAKEFILE} -j2 -B do-$@
8
9do-check-empty:
10	${EMPTY}
11	@${EMPTY}
12	@-${EMPTY}
13