1# our default target 2.PHONY: all 3all: 4 5include $(TOPDIR)/config.mk 6 7LIB := $(obj)built-in.o 8LIBGCC = $(obj)libgcc.o 9SRCS := 10 11include Makefile 12 13# Going forward use the following 14obj-y := $(sort $(obj-y)) 15extra-y := $(sort $(extra-y)) 16lib-y := $(sort $(lib-y)) 17 18subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) 19obj-y := $(patsubst %/, %/built-in.o, $(obj-y)) 20subdir-obj-y := $(filter %/built-in.o, $(obj-y)) 21subdir-obj-y := $(addprefix $(obj),$(subdir-obj-y)) 22 23SRCS += $(wildcard $(obj-y:.o=.c) $(obj-y:.o=.S) $(lib-y:.o=.c) \ 24 $(lib-y:.o=.S) $(extra-y:.o=.c) $(extra-y:.o=.S)) 25OBJS := $(addprefix $(obj),$(obj-y)) 26 27# $(obj-dirs) is a list of directories that contain object files 28obj-dirs := $(dir $(OBJS)) 29 30# Create directories for object files if directory does not exist 31# Needed when obj-y := dir/file.o syntax is used 32_dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d))) 33 34LGOBJS := $(addprefix $(obj),$(sort $(lib-y))) 35 36all: $(LIB) $(addprefix $(obj),$(extra-y)) 37 38$(LIB): $(obj).depend $(OBJS) 39 $(call cmd_link_o_target, $(OBJS)) 40 41ifneq ($(strip $(lib-y)),) 42all: $(LIBGCC) 43 44$(LIBGCC): $(obj).depend $(LGOBJS) 45 $(call cmd_link_o_target, $(LGOBJS)) 46endif 47 48ifneq ($(subdir-obj-y),) 49# Descending 50$(subdir-obj-y): $(subdir-y) 51 52$(subdir-y): FORCE 53 $(MAKE) -C $@ -f $(TOPDIR)/scripts/Makefile.build 54endif 55 56######################################################################### 57 58# defines $(obj).depend target 59 60include $(TOPDIR)/rules.mk 61 62sinclude $(obj).depend 63 64######################################################################### 65 66.PHONY: FORCE 67