add PRODUCT_SOURCE_ROOT_DIRS product variable

    $(info $(word 1,$(r)) module $(word 2,$(r)) requires non-existent $(word 3,$(r)) module: $(word 4,$(r))) \

  )

  $(warning Set BUILD_BROKEN_MISSING_REQUIRED_MODULES := true to bypass this check if this is intentional)

  ifneq (,$(PRODUCT_SOURCE_ROOT_DIRS))

    $(warning PRODUCT_SOURCE_ROOT_DIRS is non-empty. Some necessary modules may have been skipped by Soong)

  endif

  $(error Build failed)

endif # _nonexistent_required != empty

endif # check_missing_required_modules == true

# List of tags that will be used to gate blueprint modules from the build graph

_product_list_vars += PRODUCT_INCLUDE_TAGS

# List of directories that will be used to gate blueprint modules from the build graph

_product_list_vars += PRODUCT_SOURCE_ROOT_DIRS

# When this is true, various build time as well as runtime debugfs restrictions are enabled.

_product_single_value_vars += PRODUCT_SET_DEBUGFS_RESTRICTIONS

$(call add_json_bool, IgnorePrefer32OnDevice, $(filter true,$(IGNORE_PREFER32_ON_DEVICE)))

$(call add_json_list, IncludeTags,                $(PRODUCT_INCLUDE_TAGS))

$(call add_json_list, SourceRootDirs,             $(PRODUCT_SOURCE_ROOT_DIRS))

$(call json_end)

  $(error done)

endif

my_missing_files = $(shell $(call echo-warning,$(my_makefile),$(my_package_name): Unknown installed file for module '$(1)'))

my_missing_files = $(shell $(call echo-warning,$(my_makefile),$(my_package_name): Unknown installed file for module '$(1)'))$(shell$(call echo-warning,$(my_makefile),$(my_package_name): Some necessary modules may have been skipped by Soong. Check if PRODUCT_SOURCE_ROOT_DIRS is pruning necessary Android.bp files.))

ifeq ($(ALLOW_MISSING_DEPENDENCIES),true)

  # Ignore unknown installed files on partial builds

  my_missing_files =

else ifneq ($(my_modules_strict),false)

  my_missing_files = $(shell $(call echo-error,$(my_makefile),$(my_package_name): Unknown installed file for module '$(1)'))$(eval my_missing_error := true)

  my_missing_files = $(shell $(call echo-error,$(my_makefile),$(my_package_name): Unknown installed file for module '$(1)'))$(shell$(call echo-warning,$(my_makefile),$(my_package_name): Some necessary modules may have been skipped by Soong. Check if PRODUCT_SOURCE_ROOT_DIRS is pruning necessary Android.bp files.))$(eval my_missing_error := true)

endif

# Iterate over modules' built files and installed files;