DERIVED_OBJ_DIR = _linux

$(DERIVED_OBJ_DIR)/%.o: %.cc
	g++ -o $@ $<

.PHONY: all
all: $(DERIVED_OBJ_DIR)/test.o

$(DERIVED_OBJ_DIR):
	mkdir -p $(DERIVED_OBJ_DIR)

$(DERIVED_OBJ_DIR)/test.o: | $(DERIVED_OBJ_DIR)