# Defer all targets up to the upper-level
#
# This requires two recipes. The first to cover the case of no
# explicit target specifed (so when invoked as "make" we call "make"
# at the upper-level) and then a .DEFAULT recipe to pass any explicit
# target up as well, (so that an invocation of "make foo" results in a
# call to "make foo" above.
all:
	$(MAKE) -C ..

.DEFAULT:
	$(MAKE) -C .. $@