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|
obj-y :=
obj-m :=
always :=
targets :=
src := $(patsubst %/,%,$(obj))
-include $(srctree)/.config
-include $(obj)Kbuild
ifdef lib-y
export cflags-y
endif
ifdef bin-y
export cflags-y
export ldflags-y
endif
objects := $(filter %.o,$(obj-y))
subdirs := $(filter %/,$(obj-y))
cflags := $(cflags-y) $(KBUILD_CFLAGS)
asflags := $(asflags-y) $(KBUILD_ASFLAGS)
ldflags := $(ldflags-y) $(KBUILD_LDFLAGS)
collect-obj-y = $(foreach e,$(shell echo 'all:; @echo $$(obj-y)' | \
$(MAKE) -f $(obj)$(1)Kbuild -f - --no-print-directory 2>/dev/null),\
$(if $(filter %/,$(e)),$(addprefix $(e),$(call collect-obj-y,$(1)$(e))),$(e)))
ifdef lib-y
subdir-objects := $(foreach d,$(subdirs),$(addprefix $(d),$(call collect-obj-y,$(d))))
all-objects := $(objects) $(subdir-objects)
else ifdef bin-y
subdir-objects := $(foreach d,$(subdirs),$(addprefix $(d),$(call collect-obj-y,$(d))))
all-objects := $(objects) $(subdir-objects)
else
all-objects := $(objects)
endif
c-sources := $(wildcard $(addprefix $(obj),$(objects:.o=.c)))
s-sources := $(wildcard $(addprefix $(obj),$(objects:.o=.s)))
subdir-c-sources := $(wildcard $(addprefix $(obj),$(subdir-objects:.o=.c)))
subdir-s-sources := $(wildcard $(addprefix $(obj),$(subdir-objects:.o=.s)))
PHONY := all
ifdef lib-y
all: $(obj)$(lib-y) $(addprefix $(obj),$(always))
$(obj)$(lib-y): $(addprefix $(obj),$(all-objects))
$(MSG) AR "$@"
$(Q)$(AR) rcs $@ $^
else ifdef bin-y
all: $(obj)$(bin-y) $(addprefix $(obj),$(always))
$(obj)$(bin-y): $(addprefix $(obj),$(all-objects)) $(libs-y) ${prereq}
$(MSG) LD "$@"
$(Q)$(LD) $(ldflags) -o $@ $^
else
all: $(addprefix $(obj),$(all-objects)) $(subdirs) $(addprefix $(obj),$(always))
endif
PHONY += clean clean-%
clean: $(addprefix clean-,$(subdirs))
ifdef targets
$(info Cleaning targets: $(targets))
$(Q)rm -f $(addprefix $(obj),$(targets))
endif
ifdef all-objects
$(Q)rm -f $(addprefix $(obj),$(all-objects))
endif
ifdef lib-y
$(Q)rm -f $(obj)$(lib-y)
endif
ifdef bin-y
$(Q)rm -f $(obj)$(bin-y)
endif
ifdef always
$(Q)rm -f $(addprefix $(obj),$(always))
endif
# Build C sources to objects
$(filter $(addprefix $(obj),$(all-objects)),$(c-sources:.c=.o) $(subdir-c-sources:.c=.o)): $(obj)%.o: $(obj)%.c
$(MSG) CC "$@"
$(Q)$(CC) $(cflags) -c $< -o $@
# Build assembly sources to objects
$(filter $(addprefix $(obj),$(all-objects)),$(s-sources:.s=.o) $(subdir-s-sources:.s=.o)): $(obj)%.o: $(obj)%.s
$(MSG) AS "$@"
$(Q)$(CC) $(asflags) -c $< -o $@
.PHONY: $(subdirs)
$(subdirs):
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.build obj="$(obj)$@"
clean-%:
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.build obj="$(obj)$*" clean
.PHONY: $(PHONY)
|
