LEVEL := ../../../make LD_EXTRAS := -L. -l$(LIB_PREFIX)a -l$(LIB_PREFIX)b CXX_SOURCES := main.cpp include $(LEVEL)/Makefile.rules .PHONY: a.out: lib_a lib_b lib_%: $(MAKE) -f $*.mk hidden_lib_d: $(MAKE) -C hidden clean:: $(MAKE) -f a.mk clean $(MAKE) -f b.mk clean