Merge "Kbuild: Support nested composite objects"

EXTRAVERSION =

NAME = Kleptomaniac Octopus

# indicate that change "Kbuild: Support nested composite objects" is

# present in the kernel so that out-of-tree modules can act upon it

export KERNEL_SUPPORTS_NESTED_COMPOSITES := y

# *DOCUMENTATION*

# To see a list of typical targets execute "make help"

# More info can be located in ./README

# Subdirectories we need to descend into

subdir-ym	:= $(sort $(subdir-y) $(subdir-m))

# Expand $(foo-objs) $(foo-y) by calling $(call suffix-search,foo.o,-objs -y)

suffix-search = $(foreach s,$(2),$($(1:.o=$s)))

# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object

multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))

multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))

multi-search = $(sort $(foreach m,$(1),$(if $(strip $(call suffix-search,$(m),$(2) -)),\

	$(m) $(call multi-search,$(filter-out $(m),$(call suffix-search,$(m),$(2))),$(2)))))

multi-used-y := $(call multi-search,$(obj-y),-objs -y)

multi-used-m := $(call multi-search,$(obj-m),-objs -y -m)

multi-used   := $(multi-used-y) $(multi-used-m)

# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to

# Replace multi-part objects by their individual parts,

# including built-in.a from subdirectories

real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))

real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))

real-search = $(foreach m,$(1), $(if $(strip $(call suffix-search,$(m),$(2) -)), \

	$(filter $(m),$(call suffix-search,$(m),$(2))) $(call real-search,$(filter-out $(m),$(call suffix-search,$(m),$(2))),$(2)),\

	$(m)))

real-obj-y := $(call real-search, $(obj-y),-objs -y)

real-obj-m := $(call real-search, $(obj-m),-objs -y -m)

# DTB

# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built