DIRS = build build/adt build/driver build/cpb build/cpb/adt build/cpb/driver build/cpb2 build/cpb2/adt build/cpb2/driver build/cpbe build/cpbe/adt build/cpbe/driver
UNUSED := $(shell mkdir -p $(DIRS))
DIRS = build build/adt build/driver build/cpb build/cpb/adt build/cpb/driver build/cpb2 build/cpb2/adt build/cpb2/driver build/cpbe build/cpbe/adt build/cpbe/driver
UNUSED := $(shell mkdir -p $(DIRS))