Merge "Add check that a module doesn't try to override itself."

# Expand a list of modules to the modules that they override (if any)

# Expand a list of modules to the modules that they override (if any)

# $(1): The list of modules.

# $(1): The list of modules.

define module-overrides

define module-overrides

$(foreach m,$(1),$(PACKAGES.$(m).OVERRIDES) $(EXECUTABLES.$(m).OVERRIDES) $(SHARED_LIBRARIES.$(m).OVERRIDES) $(ETC.$(m).OVERRIDES))

$(foreach m,$(1),\

  $(eval _mo_overrides := $(PACKAGES.$(m).OVERRIDES) $(EXECUTABLES.$(m).OVERRIDES) $(SHARED_LIBRARIES.$(m).OVERRIDES) $(ETC.$(m).OVERRIDES))\

  $(if $(filter $(m),$(_mo_overrides)),\

    $(error Module $(m) cannot override itself),\

    $(_mo_overrides)))

endef

endef

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