参考：https://sourceware.org/binutils/docs/binutils/ar-scripts.html#ar-scripts
makefile如下：
1 ARSCRIPT=script.ar 2 SILENT=@ 3 ARCHIVES=$(wildcard $(DIR_LIB)/*.a) 4 5 $(LIB_TARGET):$(OBJ) 6 $(SILENT)echo "CREATE $@" > $(DIR_OBJ)/$(ARSCRIPT) 7 $(SILENT)for a in $(ARCHIVES); do (echo "ADDLIB $$a" >> $(DIR_OBJ)/$(ARSCRIPT)); done 8 $(SILENT)echo "ADDMOD $(OBJ)" >> $(DIR_OBJ)/$(ARSCRIPT) 9 $(SILENT)echo "SAVE" >> $(DIR_OBJ)/$(ARSCRIPT) 10 $(SILENT)echo "END" >> $(DIR_OBJ)/$(ARSCRIPT) 11 $(AR) -M < $(DIR_OBJ)/$(ARSCRIPT) 12 $(RANLIB) $@