kbuild: rename subdir-obj-y to subdir-builtin

# ===========================================================================

subdir-obj-y := $(filter %/built-in.a, $(real-obj-y))

# subdir-builtin may contain duplications. Use $(sort ...)

subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))

ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)

lib-target := $(obj)/lib.a

$(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE

	$(call if_changed_rule,as_o_S)

targets += $(filter-out $(subdir-obj-y), $(real-obj-y)) $(real-obj-m) $(lib-y)

targets += $(filter-out $(subdir-builtin), $(real-obj-y)) $(real-obj-m) $(lib-y)

targets += $(extra-y) $(always-y) $(MAKECMDGOALS)

# Linker scripts preprocessor (.lds.S -> .lds)

# ---------------------------------------------------------------------------

# To build objects in subdirs, we need to descend into the directories

$(obj)/%/built-in.a: $(obj)/% ;

$(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;

#

# Rule to compile a set of .o files into one .a file (without symbol table)

$(subdir-ym):

	$(Q)$(MAKE) $(build)=$@ \

	$(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \

	need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \

	need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \

	need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))

# Add FORCE to the prequisites of a target to force it to be always rebuilt.