我建议您有两个目录用于目标文件，一个目录用于标准对象，一个目录用于可重定位的对象.像这样:

I suggest you have two directories for object files, one for standard objects and one for relocatable objects. Something like this:

$(STANDARD_OBJS) = $(addprefix $(STANDARD_OBJS_DIR)/, $(OBJS))
$(RELOC_OBJS) = $(addprefix $(RELOC_OBJS_DIR)/, $(OBJS))

$(RELOC_OBJS_DIR)/%.o: CCFLAGS += -fPic
$(RELOC_OBJS_DIR)/%.o $(STANDARD_OBJS_DIR)/%.o: $(SRC)/%.cc
    g++ $< -o $@

(还有一些更复杂的版本，但这可以帮助您入门.)

(There are more sophisticated variations, but this will get you started.)