Merge "Deduplicate multiple $(inherit-product) calls"

# If needle appears multiple times, only the first occurrance

# will survive.

#

# How it works:

#

# - Stick everything in haystack into a single word,

#   with "|||" separating the words.

# - Replace occurrances of "|||$(needle)|||" with "||| |||",

#   breaking haystack back into multiple words, with spaces

#   where needle appeared.

# - Add needle between the first and second words of haystack.

# - Replace "|||" with spaces, breaking haystack back into

#   individual words.

#

define uniq-word

$(strip \

  $(if $(filter-out 0 1,$(words $(filter $(2),$(1)))), \

    $(eval h := |||$(subst $(space),|||,$(strip $(1)))|||) \

    $(eval h := $(subst |||$(strip $(2))|||,|||$(space)|||,$(h))) \

    $(eval h := $(word 1,$(h)) $(2) $(wordlist 2,9999,$(h))) \

    $(subst |||,$(space),$(h)) \

   , \

    $(1) \

 ))

    $(eval _uniq_word_seen :=) \

    $(foreach w,$(1), \

      $(if $(filter $(2),$(w)), \

        $(if $(_uniq_word_seen),, \

          $(w) \

          $(eval _uniq_word_seen := true)), \

        $(w))), \

  $(1)))

endef

INHERIT_TAG := @inherit:

    $(eval current_mk := $(strip $(word 1,$(_include_stack)))) \

    $(eval inherit_var := PRODUCTS.$(current_mk).INHERITS_FROM) \

    $(eval $(inherit_var) := $(sort $($(inherit_var)) $(np))) \

    $(call dump-inherit,$(strip $(word 1,$(_include_stack))),$(1)) \

    $(call dump-inherit,$(current_mk),$(1)) \

    $(call dump-config-vals,$(current_mk),inherit))

endef