core/sysprop.mk - SHIFTPHONES/android_build - Gitiles

 #
 # Copyright (C) 2020 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #

 # sysprop.mk defines rules for generating <partition>/[etc/]build.prop files

 # -----------------------------------------------------------------
 # property_overrides_split_enabled
 property_overrides_split_enabled :=
 ifeq ($(BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED), true)
   property_overrides_split_enabled := true
 endif

 BUILDINFO_SH := build/make/tools/buildinfo.sh
 POST_PROCESS_PROPS := $(HOST_OUT_EXECUTABLES)/post_process_props$(HOST_EXECUTABLE_SUFFIX)

 # Emits a set of sysprops common to all partitions to a file.
 # $(1): Partition name
 # $(2): Output file name
 define generate-common-build-props
     bash -c '\
     $(or $(PRODUCT_BUILD_PROP_OVERRIDES),:);\
     echo "####################################" >> $(2);\
     echo "# from generate-common-build-props" >> $(2);\
     echo "# These properties identify this partition image." >> $(2);\
     echo "####################################" >> $(2);\
     $(if $(filter system,$(1)),\
         echo "ro.product.$(1).brand=$(PRODUCT_SYSTEM_BRAND)" >> $(2);\
         echo "ro.product.$(1).device=$(PRODUCT_SYSTEM_DEVICE)" >> $(2);\
         echo "ro.product.$(1).manufacturer=$(PRODUCT_SYSTEM_MANUFACTURER)" >> $(2);\
         echo "ro.product.$(1).model=$(PRODUCT_SYSTEM_MODEL)" >> $(2);\
         echo "ro.product.$(1).name=$(PRODUCT_SYSTEM_NAME)" >> $(2);\
       ,\
         echo "ro.product.$(1).brand=$(PRODUCT_BRAND)" >> $(2);\
         echo "ro.product.$(1).device=$${TARGET_DEVICE:-$(TARGET_DEVICE)}" >> $(2);\
         echo "ro.product.$(1).manufacturer=$(PRODUCT_MANUFACTURER)" >> $(2);\
         echo "ro.product.$(1).model=$${PRODUCT_MODEL:-$(PRODUCT_MODEL)}" >> $(2);\
         echo "ro.product.$(1).name=$${TARGET_PRODUCT:-$(TARGET_PRODUCT)}" >> $(2);\
     )\
     $(if $(filter true,$(ZYGOTE_FORCE_64)),\
         $(if $(filter vendor,$(1)),\
             echo "ro.$(1).product.cpu.abilist=$(TARGET_CPU_ABI_LIST_64_BIT)" >> $(2);\
             echo "ro.$(1).product.cpu.abilist32=" >> $(2);\
             echo "ro.$(1).product.cpu.abilist64=$(TARGET_CPU_ABI_LIST_64_BIT)" >> $(2);\
         )\
     ,\
         $(if $(filter system vendor odm,$(1)),\
             echo "ro.$(1).product.cpu.abilist=$(TARGET_CPU_ABI_LIST)" >> $(2);\
             echo "ro.$(1).product.cpu.abilist32=$(TARGET_CPU_ABI_LIST_32_BIT)" >> $(2);\
             echo "ro.$(1).product.cpu.abilist64=$(TARGET_CPU_ABI_LIST_64_BIT)" >> $(2);\
         )\
     )\
     echo "ro.$(1).build.date=`$(DATE_FROM_FILE)`" >> $(2);\
     echo "ro.$(1).build.date.utc=`$(DATE_FROM_FILE) +%s`" >> $(2);\
     echo "ro.$(1).build.fingerprint=$(BUILD_FINGERPRINT_FROM_FILE)" >> $(2);\
     echo "ro.$(1).build.id=$(BUILD_ID)" >> $(2);\
     echo "ro.$(1).build.tags=$(BUILD_VERSION_TAGS)" >> $(2);\
     echo "ro.$(1).build.type=$(TARGET_BUILD_VARIANT)" >> $(2);\
     echo "ro.$(1).build.version.incremental=$(BUILD_NUMBER_FROM_FILE)" >> $(2);\
     echo "ro.$(1).build.version.release=$(PLATFORM_VERSION_LAST_STABLE)" >> $(2);\
     echo "ro.$(1).build.version.release_or_codename=$(PLATFORM_VERSION)" >> $(2);\
     echo "ro.$(1).build.version.sdk=$(PLATFORM_SDK_VERSION)" >> $(2);\
     ';\

 endef

 # Rule for generating <partition>/[etc/]build.prop file
 #
 # $(1): partition name
 # $(2): path to the output
 # $(3): path to the input *.prop files. The contents of the files are directly
 #       emitted to the output
 # $(4): list of variable names each of which contains name=value pairs
 # $(5): optional list of prop names to force remove from the output. Properties from both
 #       $(3) and (4) are affected
 # $(6): optional list of files to append at the end. The content of each file is emitted
 #       to the output
 # $(7): optional flag to skip common properties generation
 define build-properties
 ALL_DEFAULT_INSTALLED_MODULES += $(2)

 $(eval # Properties can be assigned using `prop ?= value` or `prop = value` syntax.)
 $(eval # Eliminate spaces around the ?= and = separators.)
 $(foreach name,$(strip $(4)),\
     $(eval _temp := $$(call collapse-pairs,$$($(name)),?=))\
     $(eval _resolved_$(name) := $$(call collapse-pairs,$$(_temp),=))\
 )

 $(eval # Implement the legacy behavior when BUILD_BROKEN_DUP_SYSPROP is on.)
 $(eval # Optional assignments are all converted to normal assignments and)
 $(eval # when their duplicates the first one wins)
 $(if $(filter true,$(BUILD_BROKEN_DUP_SYSPROP)),\
     $(foreach name,$(strip $(4)),\
         $(eval _temp := $$(subst ?=,=,$$(_resolved_$(name))))\
         $(eval _resolved_$(name) := $$(call uniq-pairs-by-first-component,$$(_resolved_$(name)),=))\
     )\
     $(eval _option := --allow-dup)\
 )

 $(2): $(POST_PROCESS_PROPS) $(INTERNAL_BUILD_ID_MAKEFILE) $(3) $(6)
 	$(hide) echo Building $$@
 	$(hide) mkdir -p $$(dir $$@)
 	$(hide) rm -f $$@ && touch $$@
 ifneq ($(strip $(7)), true)
 	$(hide) $$(call generate-common-build-props,$(call to-lower,$(strip $(1))),$$@)
 endif
 	$(hide) $(foreach file,$(strip $(3)),\
 	    if [ -f "$(file)" ]; then\
 	        echo "" >> $$@;\
 	        echo "####################################" >> $$@;\
 	        echo "# from $(file)" >> $$@;\
 	        echo "####################################" >> $$@;\
 	        cat $(file) >> $$@;\
 	    fi;)
 	$(hide) $(foreach name,$(strip $(4)),\
 	    echo "" >> $$@;\
 	    echo "####################################" >> $$@;\
 	    echo "# from variable $(name)" >> $$@;\
 	    echo "####################################" >> $$@;\
 	    $$(foreach line,$$(_resolved_$(name)),\
 	        echo "$$(line)" >> $$@;\
 	    )\
 	)
 	$(hide) $(POST_PROCESS_PROPS) $$(_option) --sdk-version $(PLATFORM_SDK_VERSION) $$@ $(5)
 	$(hide) $(foreach file,$(strip $(6)),\
 	    if [ -f "$(file)" ]; then\
 	        cat $(file) >> $$@;\
 	    fi;)
 	$(hide) echo "# end of file" >> $$@

 $(call declare-0p-target,$(2))
 endef

 # -----------------------------------------------------------------
 # Define fingerprint, thumbprint, and version tags for the current build
 #
 # BUILD_VERSION_TAGS is a comma-separated list of tags chosen by the device
 # implementer that further distinguishes the build. It's basically defined
 # by the device implementer. Here, we are adding a mandatory tag that
 # identifies the signing config of the build.
 BUILD_VERSION_TAGS := $(BUILD_VERSION_TAGS)
 ifeq ($(TARGET_BUILD_TYPE),debug)
   BUILD_VERSION_TAGS += debug
 endif
 # The "test-keys" tag marks builds signed with the old test keys,
 # which are available in the SDK.  "dev-keys" marks builds signed with
 # non-default dev keys (usually private keys from a vendor directory).
 # Both of these tags will be removed and replaced with "release-keys"
 # when the target-files is signed in a post-build step.
 ifeq ($(DEFAULT_SYSTEM_DEV_CERTIFICATE),build/make/target/product/security/testkey)
 BUILD_KEYS := test-keys
 else
 BUILD_KEYS := dev-keys
 endif
 BUILD_VERSION_TAGS += $(BUILD_KEYS)
 BUILD_VERSION_TAGS := $(subst $(space),$(comma),$(sort $(BUILD_VERSION_TAGS)))

 # BUILD_FINGERPRINT is used used to uniquely identify the combined build and
 # product; used by the OTA server.
 ifeq (,$(strip $(BUILD_FINGERPRINT)))
   ifeq ($(strip $(HAS_BUILD_NUMBER)),false)
     BF_BUILD_NUMBER := $(BUILD_USERNAME)$$($(DATE_FROM_FILE) +%m%d%H%M)
   else
     BF_BUILD_NUMBER := $(file <$(BUILD_NUMBER_FILE))
   endif
   BUILD_FINGERPRINT := $(PRODUCT_BRAND)/$(TARGET_PRODUCT)/$(TARGET_DEVICE):$(PLATFORM_VERSION)/$(BUILD_ID)/$(BF_BUILD_NUMBER):$(TARGET_BUILD_VARIANT)/$(BUILD_VERSION_TAGS)
 endif
 # unset it for safety.
 BF_BUILD_NUMBER :=

 BUILD_FINGERPRINT_FILE := $(PRODUCT_OUT)/build_fingerprint.txt
 ifneq (,$(shell mkdir -p $(PRODUCT_OUT) && echo $(BUILD_FINGERPRINT) >$(BUILD_FINGERPRINT_FILE) && grep " " $(BUILD_FINGERPRINT_FILE)))
   $(error BUILD_FINGERPRINT cannot contain spaces: "$(file <$(BUILD_FINGERPRINT_FILE))")
 endif
 BUILD_FINGERPRINT_FROM_FILE := $$(cat $(BUILD_FINGERPRINT_FILE))
 # unset it for safety.
 BUILD_FINGERPRINT :=

 # BUILD_THUMBPRINT is used to uniquely identify the system build; used by the
 # OTA server. This purposefully excludes any product-specific variables.
 ifeq (,$(strip $(BUILD_THUMBPRINT)))
   BUILD_THUMBPRINT := $(PLATFORM_VERSION)/$(BUILD_ID)/$(BUILD_NUMBER_FROM_FILE):$(TARGET_BUILD_VARIANT)/$(BUILD_VERSION_TAGS)
 endif

 BUILD_THUMBPRINT_FILE := $(PRODUCT_OUT)/build_thumbprint.txt
 ifneq (,$(shell mkdir -p $(PRODUCT_OUT) && echo $(BUILD_THUMBPRINT) >$(BUILD_THUMBPRINT_FILE) && grep " " $(BUILD_THUMBPRINT_FILE)))
   $(error BUILD_THUMBPRINT cannot contain spaces: "$(file <$(BUILD_THUMBPRINT_FILE))")
 endif
 BUILD_THUMBPRINT_FROM_FILE := $$(cat $(BUILD_THUMBPRINT_FILE))
 # unset it for safety.
 BUILD_THUMBPRINT :=

 # -----------------------------------------------------------------
 # Define human readable strings that describe this build
 #

 # BUILD_ID: detail info; has the same info as the build fingerprint
 BUILD_DESC := $(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT) $(PLATFORM_VERSION) $(BUILD_ID) $(BUILD_NUMBER_FROM_FILE) $(BUILD_VERSION_TAGS)

 # BUILD_DISPLAY_ID is shown under Settings -> About Phone
 ifeq ($(TARGET_BUILD_VARIANT),user)
   # User builds should show:
   # release build number or branch.buld_number non-release builds

   # Dev. branches should have DISPLAY_BUILD_NUMBER set
   ifeq (true,$(DISPLAY_BUILD_NUMBER))
     BUILD_DISPLAY_ID := $(BUILD_ID).$(BUILD_NUMBER_FROM_FILE) $(BUILD_KEYS)
   else
     BUILD_DISPLAY_ID := $(BUILD_ID) $(BUILD_KEYS)
   endif
 else
   # Non-user builds should show detailed build information
   BUILD_DISPLAY_ID := $(BUILD_DESC)
 endif

 # TARGET_BUILD_FLAVOR and ro.build.flavor are used only by the test
 # harness to distinguish builds. Only add _asan for a sanitized build
 # if it isn't already a part of the flavor (via a dedicated lunch
 # config for example).
 TARGET_BUILD_FLAVOR := $(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT)
 ifneq (, $(filter address, $(SANITIZE_TARGET)))
 ifeq (,$(findstring _asan,$(TARGET_BUILD_FLAVOR)))
 TARGET_BUILD_FLAVOR := $(TARGET_BUILD_FLAVOR)_asan
 endif
 endif

 KNOWN_OEM_THUMBPRINT_PROPERTIES := \
     ro.product.brand \
     ro.product.name \
     ro.product.device
 OEM_THUMBPRINT_PROPERTIES := $(filter $(KNOWN_OEM_THUMBPRINT_PROPERTIES),\
     $(PRODUCT_OEM_PROPERTIES))
 KNOWN_OEM_THUMBPRINT_PROPERTIES:=

 # -----------------------------------------------------------------
 # system/build.prop
 #
 # Note: parts of this file that can't be generated by the build-properties
 # macro are manually created as separate files and then fed into the macro

 # Accepts a whitespace separated list of product locales such as
 # (en_US en_AU en_GB...) and returns the first locale in the list with
 # underscores replaced with hyphens. In the example above, this will
 # return "en-US".
 define get-default-product-locale
 $(strip $(subst _,-, $(firstword $(1))))
 endef

 gen_from_buildinfo_sh := $(call intermediates-dir-for,PACKAGING,system_build_prop)/buildinfo.prop
 $(gen_from_buildinfo_sh): $(INTERNAL_BUILD_ID_MAKEFILE) $(API_FINGERPRINT) | $(BUILD_DATETIME_FILE) $(BUILD_NUMBER_FILE)
 	$(hide) TARGET_BUILD_TYPE="$(TARGET_BUILD_VARIANT)" \
 	        TARGET_BUILD_FLAVOR="$(TARGET_BUILD_FLAVOR)" \
 	        TARGET_DEVICE="$(TARGET_DEVICE)" \
 	        LINEAGE_DEVICE="$(TARGET_DEVICE)" \
 	        PRODUCT_DEFAULT_LOCALE="$(call get-default-product-locale,$(PRODUCT_LOCALES))" \
 	        PRODUCT_DEFAULT_WIFI_CHANNELS="$(PRODUCT_DEFAULT_WIFI_CHANNELS)" \
 	        PRIVATE_BUILD_DESC="$(BUILD_DESC)" \
 	        BUILD_ID="$(BUILD_ID)" \
 	        BUILD_DISPLAY_ID="$(BUILD_DISPLAY_ID)" \
 	        DATE="$(DATE_FROM_FILE)" \
 	        BUILD_USERNAME="$(BUILD_USERNAME)" \
 	        BUILD_HOSTNAME="$(BUILD_HOSTNAME)" \
 	        BUILD_NUMBER="$(BUILD_NUMBER_FROM_FILE)" \
 	        BOARD_BUILD_SYSTEM_ROOT_IMAGE="$(BOARD_BUILD_SYSTEM_ROOT_IMAGE)" \
 	        BOARD_USE_VBMETA_DIGTEST_IN_FINGERPRINT="$(BOARD_USE_VBMETA_DIGTEST_IN_FINGERPRINT)" \
 	        PLATFORM_VERSION="$(PLATFORM_VERSION)" \
 	        PLATFORM_DISPLAY_VERSION="$(PLATFORM_DISPLAY_VERSION)" \
 	        PLATFORM_VERSION_LAST_STABLE="$(PLATFORM_VERSION_LAST_STABLE)" \
 	        PLATFORM_SECURITY_PATCH="$(PLATFORM_SECURITY_PATCH)" \
 	        PLATFORM_BASE_OS="$(PLATFORM_BASE_OS)" \
 	        PLATFORM_SDK_VERSION="$(PLATFORM_SDK_VERSION)" \
 	        PLATFORM_PREVIEW_SDK_VERSION="$(PLATFORM_PREVIEW_SDK_VERSION)" \
 	        PLATFORM_PREVIEW_SDK_FINGERPRINT="$$(cat $(API_FINGERPRINT))" \
 	        PLATFORM_VERSION_CODENAME="$(PLATFORM_VERSION_CODENAME)" \
 	        PLATFORM_VERSION_ALL_CODENAMES="$(PLATFORM_VERSION_ALL_CODENAMES)" \
 	        PLATFORM_VERSION_KNOWN_CODENAMES="$(PLATFORM_VERSION_KNOWN_CODENAMES)" \
 	        PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION="$(PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION)" \
 	        BUILD_VERSION_TAGS="$(BUILD_VERSION_TAGS)" \
 	        $(if $(OEM_THUMBPRINT_PROPERTIES),BUILD_THUMBPRINT="$(BUILD_THUMBPRINT_FROM_FILE)") \
 	        TARGET_CPU_ABI_LIST="$(TARGET_CPU_ABI_LIST)" \
 	        TARGET_CPU_ABI_LIST_32_BIT="$(TARGET_CPU_ABI_LIST_32_BIT)" \
 	        TARGET_CPU_ABI_LIST_64_BIT="$(TARGET_CPU_ABI_LIST_64_BIT)" \
 	        TARGET_CPU_ABI="$(TARGET_CPU_ABI)" \
 	        TARGET_CPU_ABI2="$(TARGET_CPU_ABI2)" \
 	        ZYGOTE_FORCE_64_BIT="$(ZYGOTE_FORCE_64_BIT)" \
 	        $(PRODUCT_BUILD_PROP_OVERRIDES) \
 	        bash $(BUILDINFO_SH) > $@

 ifdef TARGET_SYSTEM_PROP
 system_prop_file := $(TARGET_SYSTEM_PROP)
 else
 system_prop_file := $(wildcard $(TARGET_DEVICE_DIR)/system.prop)
 endif

 _prop_files_ := \
   $(gen_from_buildinfo_sh) \
   $(system_prop_file)

 # Order matters here. When there are duplicates, the last one wins.
 # TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
 _prop_vars_ := \
     ADDITIONAL_SYSTEM_PROPERTIES \
     PRODUCT_SYSTEM_PROPERTIES

 # TODO(b/117892318): deprecate this
 _prop_vars_ += \
     PRODUCT_SYSTEM_DEFAULT_PROPERTIES

 ifndef property_overrides_split_enabled
 _prop_vars_ += \
     ADDITIONAL_VENDOR_PROPERTIES \
     PRODUCT_VENDOR_PROPERTIES
 endif

 INSTALLED_BUILD_PROP_TARGET := $(TARGET_OUT)/build.prop

 $(eval $(call build-properties,\
     system,\
     $(INSTALLED_BUILD_PROP_TARGET),\
     $(_prop_files_),\
     $(_prop_vars_),\
     $(PRODUCT_SYSTEM_PROPERTY_BLACKLIST),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_BUILD_PROP_TARGET)))

 # -----------------------------------------------------------------
 # vendor/build.prop
 #
 _prop_files_ := $(if $(TARGET_VENDOR_PROP),\
     $(TARGET_VENDOR_PROP),\
     $(wildcard $(TARGET_DEVICE_DIR)/vendor.prop))

 android_info_prop := $(call intermediates-dir-for,ETC,android_info_prop)/android_info.prop
 $(android_info_prop): $(INSTALLED_ANDROID_INFO_TXT_TARGET)
 	cat $< | grep 'require version-' | sed -e 's/require version-/ro.build.expect./g' > $@

 _prop_files_ += $(android_info_prop)

 ifdef property_overrides_split_enabled
 # Order matters here. When there are duplicates, the last one wins.
 # TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
 _prop_vars_ := \
     ADDITIONAL_VENDOR_PROPERTIES \
     PRODUCT_VENDOR_PROPERTIES

 # TODO(b/117892318): deprecate this
 _prop_vars_ += \
     PRODUCT_DEFAULT_PROPERTY_OVERRIDES \
     PRODUCT_PROPERTY_OVERRIDES
 else
 _prop_vars_ :=
 endif

 INSTALLED_VENDOR_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR)/build.prop
 $(eval $(call build-properties,\
     vendor,\
     $(INSTALLED_VENDOR_BUILD_PROP_TARGET),\
     $(_prop_files_),\
     $(_prop_vars_),\
     $(PRODUCT_VENDOR_PROPERTY_BLACKLIST),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_VENDOR_BUILD_PROP_TARGET)))

 # -----------------------------------------------------------------
 # product/etc/build.prop
 #

 _prop_files_ := $(if $(TARGET_PRODUCT_PROP),\
     $(TARGET_PRODUCT_PROP),\
     $(wildcard $(TARGET_DEVICE_DIR)/product.prop))

 # Order matters here. When there are duplicates, the last one wins.
 # TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
 _prop_vars_ := \
     ADDITIONAL_PRODUCT_PROPERTIES \
     PRODUCT_PRODUCT_PROPERTIES

 INSTALLED_PRODUCT_BUILD_PROP_TARGET := $(TARGET_OUT_PRODUCT)/etc/build.prop

 ifdef PRODUCT_OEM_PROPERTIES
 import_oem_prop := $(call intermediates-dir-for,ETC,import_oem_prop)/oem.prop

 $(import_oem_prop):
 	$(hide) echo "####################################" >> $@; \
 	        echo "# PRODUCT_OEM_PROPERTIES" >> $@; \
 	        echo "####################################" >> $@;
 	$(hide) $(foreach prop,$(PRODUCT_OEM_PROPERTIES), \
 	    echo "import /oem/oem.prop $(prop)" >> $@;)

 _footers_ := $(import_oem_prop)
 else
 _footers_ :=
 endif

 # Skip common /product properties generation if device released before R and
 # has no product partition. This is the first part of the check.
 ifeq ($(call math_lt,$(if $(PRODUCT_SHIPPING_API_LEVEL),$(PRODUCT_SHIPPING_API_LEVEL),30),30), true)
   _skip_common_properties := true
 endif

 # The second part of the check - always generate common properties for the
 # devices with product partition regardless of shipping level.
 ifneq ($(BOARD_USES_PRODUCTIMAGE),)
   _skip_common_properties :=
 endif

 $(eval $(call build-properties,\
     product,\
     $(INSTALLED_PRODUCT_BUILD_PROP_TARGET),\
     $(_prop_files_),\
     $(_prop_vars_),\
     $(empty),\
     $(_footers_),\
     $(_skip_common_properties)))

 $(eval $(call declare-1p-target,$(INSTALLED_PRODUCT_BUILD_PROP_TARGET)))

 _skip_common_properties :=

 # ----------------------------------------------------------------
 # odm/etc/build.prop
 #
 _prop_files_ := $(if $(TARGET_ODM_PROP),\
     $(TARGET_ODM_PROP),\
     $(wildcard $(TARGET_DEVICE_DIR)/odm.prop))

 # Order matters here. When there are duplicates, the last one wins.
 # TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
 _prop_vars_ := \
     ADDITIONAL_ODM_PROPERTIES \
     PRODUCT_ODM_PROPERTIES

 INSTALLED_ODM_BUILD_PROP_TARGET := $(TARGET_OUT_ODM)/etc/build.prop
 $(eval $(call build-properties,\
     odm,\
     $(INSTALLED_ODM_BUILD_PROP_TARGET),\
     $(_prop_files_),\
     $(_prop_vars_),\
     $(empty),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_ODM_BUILD_PROP_TARGET)))

 # ----------------------------------------------------------------
 # vendor_dlkm/etc/build.prop
 #

 INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR_DLKM)/etc/build.prop
 $(eval $(call build-properties,\
     vendor_dlkm,\
     $(INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET)))

 # ----------------------------------------------------------------
 # odm_dlkm/etc/build.prop
 #

 INSTALLED_ODM_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_ODM_DLKM)/etc/build.prop
 $(eval $(call build-properties,\
     odm_dlkm,\
     $(INSTALLED_ODM_DLKM_BUILD_PROP_TARGET),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_ODM_DLKM_BUILD_PROP_TARGET)))

 # ----------------------------------------------------------------
 # system_dlkm/build.prop
 #

 INSTALLED_SYSTEM_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_SYSTEM_DLKM)/etc/build.prop
 $(eval $(call build-properties,\
     system_dlkm,\
     $(INSTALLED_SYSTEM_DLKM_BUILD_PROP_TARGET),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_SYSTEM_DLKM_BUILD_PROP_TARGET)))

 # -----------------------------------------------------------------
 # system_ext/etc/build.prop
 #
 _prop_files_ := $(if $(TARGET_SYSTEM_EXT_PROP),\
     $(TARGET_SYSTEM_EXT_PROP),\
     $(wildcard $(TARGET_DEVICE_DIR)/system_ext.prop))

 # Order matters here. When there are duplicates, the last one wins.
 # TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
 _prop_vars_ := PRODUCT_SYSTEM_EXT_PROPERTIES

 INSTALLED_SYSTEM_EXT_BUILD_PROP_TARGET := $(TARGET_OUT_SYSTEM_EXT)/etc/build.prop
 $(eval $(call build-properties,\
     system_ext,\
     $(INSTALLED_SYSTEM_EXT_BUILD_PROP_TARGET),\
     $(_prop_files_),\
     $(_prop_vars_),\
     $(empty),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_SYSTEM_EXT_BUILD_PROP_TARGET)))

 # ----------------------------------------------------------------
 # ramdisk/boot/etc/build.prop
 #

 RAMDISK_BUILD_PROP_REL_PATH := system/etc/ramdisk/build.prop
 INSTALLED_RAMDISK_BUILD_PROP_TARGET := $(TARGET_RAMDISK_OUT)/$(RAMDISK_BUILD_PROP_REL_PATH)
 $(eval $(call build-properties,\
     bootimage,\
     $(INSTALLED_RAMDISK_BUILD_PROP_TARGET),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty),\
     $(empty)))

 $(eval $(call declare-1p-target,$(INSTALLED_RAMDISK_BUILD_PROP_TARGET)))
	#
	# Copyright (C) 2020 The Android Open Source Project
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	# sysprop.mk defines rules for generating <partition>/[etc/]build.prop files

	# -----------------------------------------------------------------
	# property_overrides_split_enabled
	property_overrides_split_enabled :=
	ifeq ($(BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED), true)
	property_overrides_split_enabled := true
	endif

	BUILDINFO_SH := build/make/tools/buildinfo.sh
	POST_PROCESS_PROPS := $(HOST_OUT_EXECUTABLES)/post_process_props$(HOST_EXECUTABLE_SUFFIX)

	# Emits a set of sysprops common to all partitions to a file.
	# $(1): Partition name
	# $(2): Output file name
	define generate-common-build-props
	bash -c '\
	$(or $(PRODUCT_BUILD_PROP_OVERRIDES),:);\
	echo "####################################" >> $(2);\
	echo "# from generate-common-build-props" >> $(2);\
	echo "# These properties identify this partition image." >> $(2);\
	echo "####################################" >> $(2);\
	$(if $(filter system,$(1)),\
	echo "ro.product.$(1).brand=$(PRODUCT_SYSTEM_BRAND)" >> $(2);\
	echo "ro.product.$(1).device=$(PRODUCT_SYSTEM_DEVICE)" >> $(2);\
	echo "ro.product.$(1).manufacturer=$(PRODUCT_SYSTEM_MANUFACTURER)" >> $(2);\
	echo "ro.product.$(1).model=$(PRODUCT_SYSTEM_MODEL)" >> $(2);\
	echo "ro.product.$(1).name=$(PRODUCT_SYSTEM_NAME)" >> $(2);\
	,\
	echo "ro.product.$(1).brand=$(PRODUCT_BRAND)" >> $(2);\
	echo "ro.product.$(1).device=$${TARGET_DEVICE:-$(TARGET_DEVICE)}" >> $(2);\
	echo "ro.product.$(1).manufacturer=$(PRODUCT_MANUFACTURER)" >> $(2);\
	echo "ro.product.$(1).model=$${PRODUCT_MODEL:-$(PRODUCT_MODEL)}" >> $(2);\
	echo "ro.product.$(1).name=$${TARGET_PRODUCT:-$(TARGET_PRODUCT)}" >> $(2);\
	)\
	$(if $(filter true,$(ZYGOTE_FORCE_64)),\
	$(if $(filter vendor,$(1)),\
	echo "ro.$(1).product.cpu.abilist=$(TARGET_CPU_ABI_LIST_64_BIT)" >> $(2);\
	echo "ro.$(1).product.cpu.abilist32=" >> $(2);\
	echo "ro.$(1).product.cpu.abilist64=$(TARGET_CPU_ABI_LIST_64_BIT)" >> $(2);\
	)\
	,\
	$(if $(filter system vendor odm,$(1)),\
	echo "ro.$(1).product.cpu.abilist=$(TARGET_CPU_ABI_LIST)" >> $(2);\
	echo "ro.$(1).product.cpu.abilist32=$(TARGET_CPU_ABI_LIST_32_BIT)" >> $(2);\
	echo "ro.$(1).product.cpu.abilist64=$(TARGET_CPU_ABI_LIST_64_BIT)" >> $(2);\
	)\
	)\
	echo "ro.$(1).build.date=`$(DATE_FROM_FILE)`" >> $(2);\
	echo "ro.$(1).build.date.utc=`$(DATE_FROM_FILE) +%s`" >> $(2);\
	echo "ro.$(1).build.fingerprint=$(BUILD_FINGERPRINT_FROM_FILE)" >> $(2);\
	echo "ro.$(1).build.id=$(BUILD_ID)" >> $(2);\
	echo "ro.$(1).build.tags=$(BUILD_VERSION_TAGS)" >> $(2);\
	echo "ro.$(1).build.type=$(TARGET_BUILD_VARIANT)" >> $(2);\
	echo "ro.$(1).build.version.incremental=$(BUILD_NUMBER_FROM_FILE)" >> $(2);\
	echo "ro.$(1).build.version.release=$(PLATFORM_VERSION_LAST_STABLE)" >> $(2);\
	echo "ro.$(1).build.version.release_or_codename=$(PLATFORM_VERSION)" >> $(2);\
	echo "ro.$(1).build.version.sdk=$(PLATFORM_SDK_VERSION)" >> $(2);\
	';\

	endef

	# Rule for generating <partition>/[etc/]build.prop file
	#
	# $(1): partition name
	# $(2): path to the output
	# $(3): path to the input *.prop files. The contents of the files are directly
	# emitted to the output
	# $(4): list of variable names each of which contains name=value pairs
	# $(5): optional list of prop names to force remove from the output. Properties from both
	# $(3) and (4) are affected
	# $(6): optional list of files to append at the end. The content of each file is emitted
	# to the output
	# $(7): optional flag to skip common properties generation
	define build-properties
	ALL_DEFAULT_INSTALLED_MODULES += $(2)

	$(eval # Properties can be assigned using `prop ?= value` or `prop = value` syntax.)
	$(eval # Eliminate spaces around the ?= and = separators.)
	$(foreach name,$(strip $(4)),\
	$(eval _temp := $$(call collapse-pairs,$$($(name)),?=))\
	$(eval _resolved_$(name) := $$(call collapse-pairs,$$(_temp),=))\
	)

	$(eval # Implement the legacy behavior when BUILD_BROKEN_DUP_SYSPROP is on.)
	$(eval # Optional assignments are all converted to normal assignments and)
	$(eval # when their duplicates the first one wins)
	$(if $(filter true,$(BUILD_BROKEN_DUP_SYSPROP)),\
	$(foreach name,$(strip $(4)),\
	$(eval _temp := $$(subst ?=,=,$$(_resolved_$(name))))\
	$(eval _resolved_$(name) := $$(call uniq-pairs-by-first-component,$$(_resolved_$(name)),=))\
	)\
	$(eval _option := --allow-dup)\
	)

	$(2): $(POST_PROCESS_PROPS) $(INTERNAL_BUILD_ID_MAKEFILE) $(3) $(6)
	$(hide) echo Building $$@
	$(hide) mkdir -p $$(dir $$@)
	$(hide) rm -f $$@ && touch $$@
	ifneq ($(strip $(7)), true)
	$(hide) $$(call generate-common-build-props,$(call to-lower,$(strip $(1))),$$@)
	endif
	$(hide) $(foreach file,$(strip $(3)),\
	if [ -f "$(file)" ]; then\
	echo "" >> $$@;\
	echo "####################################" >> $$@;\
	echo "# from $(file)" >> $$@;\
	echo "####################################" >> $$@;\
	cat $(file) >> $$@;\
	fi;)
	$(hide) $(foreach name,$(strip $(4)),\
	echo "" >> $$@;\
	echo "####################################" >> $$@;\
	echo "# from variable $(name)" >> $$@;\
	echo "####################################" >> $$@;\
	$$(foreach line,$$(_resolved_$(name)),\
	echo "$$(line)" >> $$@;\
	)\
	)
	$(hide) $(POST_PROCESS_PROPS) $$(_option) --sdk-version $(PLATFORM_SDK_VERSION) $$@ $(5)
	$(hide) $(foreach file,$(strip $(6)),\
	if [ -f "$(file)" ]; then\
	cat $(file) >> $$@;\
	fi;)
	$(hide) echo "# end of file" >> $$@

	$(call declare-0p-target,$(2))
	endef

	# -----------------------------------------------------------------
	# Define fingerprint, thumbprint, and version tags for the current build
	#
	# BUILD_VERSION_TAGS is a comma-separated list of tags chosen by the device
	# implementer that further distinguishes the build. It's basically defined
	# by the device implementer. Here, we are adding a mandatory tag that
	# identifies the signing config of the build.
	BUILD_VERSION_TAGS := $(BUILD_VERSION_TAGS)
	ifeq ($(TARGET_BUILD_TYPE),debug)
	BUILD_VERSION_TAGS += debug
	endif
	# The "test-keys" tag marks builds signed with the old test keys,
	# which are available in the SDK. "dev-keys" marks builds signed with
	# non-default dev keys (usually private keys from a vendor directory).
	# Both of these tags will be removed and replaced with "release-keys"
	# when the target-files is signed in a post-build step.
	ifeq ($(DEFAULT_SYSTEM_DEV_CERTIFICATE),build/make/target/product/security/testkey)
	BUILD_KEYS := test-keys
	else
	BUILD_KEYS := dev-keys
	endif
	BUILD_VERSION_TAGS += $(BUILD_KEYS)
	BUILD_VERSION_TAGS := $(subst $(space),$(comma),$(sort $(BUILD_VERSION_TAGS)))

	# BUILD_FINGERPRINT is used used to uniquely identify the combined build and
	# product; used by the OTA server.
	ifeq (,$(strip $(BUILD_FINGERPRINT)))
	ifeq ($(strip $(HAS_BUILD_NUMBER)),false)
	BF_BUILD_NUMBER := $(BUILD_USERNAME)$$($(DATE_FROM_FILE) +%m%d%H%M)
	else
	BF_BUILD_NUMBER := $(file <$(BUILD_NUMBER_FILE))
	endif
	BUILD_FINGERPRINT := $(PRODUCT_BRAND)/$(TARGET_PRODUCT)/$(TARGET_DEVICE):$(PLATFORM_VERSION)/$(BUILD_ID)/$(BF_BUILD_NUMBER):$(TARGET_BUILD_VARIANT)/$(BUILD_VERSION_TAGS)
	endif
	# unset it for safety.
	BF_BUILD_NUMBER :=

	BUILD_FINGERPRINT_FILE := $(PRODUCT_OUT)/build_fingerprint.txt
	ifneq (,$(shell mkdir -p $(PRODUCT_OUT) && echo $(BUILD_FINGERPRINT) >$(BUILD_FINGERPRINT_FILE) && grep " " $(BUILD_FINGERPRINT_FILE)))
	$(error BUILD_FINGERPRINT cannot contain spaces: "$(file <$(BUILD_FINGERPRINT_FILE))")
	endif
	BUILD_FINGERPRINT_FROM_FILE := $$(cat $(BUILD_FINGERPRINT_FILE))
	# unset it for safety.
	BUILD_FINGERPRINT :=

	# BUILD_THUMBPRINT is used to uniquely identify the system build; used by the
	# OTA server. This purposefully excludes any product-specific variables.
	ifeq (,$(strip $(BUILD_THUMBPRINT)))
	BUILD_THUMBPRINT := $(PLATFORM_VERSION)/$(BUILD_ID)/$(BUILD_NUMBER_FROM_FILE):$(TARGET_BUILD_VARIANT)/$(BUILD_VERSION_TAGS)
	endif

	BUILD_THUMBPRINT_FILE := $(PRODUCT_OUT)/build_thumbprint.txt
	ifneq (,$(shell mkdir -p $(PRODUCT_OUT) && echo $(BUILD_THUMBPRINT) >$(BUILD_THUMBPRINT_FILE) && grep " " $(BUILD_THUMBPRINT_FILE)))
	$(error BUILD_THUMBPRINT cannot contain spaces: "$(file <$(BUILD_THUMBPRINT_FILE))")
	endif
	BUILD_THUMBPRINT_FROM_FILE := $$(cat $(BUILD_THUMBPRINT_FILE))
	# unset it for safety.
	BUILD_THUMBPRINT :=

	# -----------------------------------------------------------------
	# Define human readable strings that describe this build
	#

	# BUILD_ID: detail info; has the same info as the build fingerprint
	BUILD_DESC := $(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT) $(PLATFORM_VERSION) $(BUILD_ID) $(BUILD_NUMBER_FROM_FILE) $(BUILD_VERSION_TAGS)

	# BUILD_DISPLAY_ID is shown under Settings -> About Phone
	ifeq ($(TARGET_BUILD_VARIANT),user)
	# User builds should show:
	# release build number or branch.buld_number non-release builds

	# Dev. branches should have DISPLAY_BUILD_NUMBER set
	ifeq (true,$(DISPLAY_BUILD_NUMBER))
	BUILD_DISPLAY_ID := $(BUILD_ID).$(BUILD_NUMBER_FROM_FILE) $(BUILD_KEYS)
	else
	BUILD_DISPLAY_ID := $(BUILD_ID) $(BUILD_KEYS)
	endif
	else
	# Non-user builds should show detailed build information
	BUILD_DISPLAY_ID := $(BUILD_DESC)
	endif

	# TARGET_BUILD_FLAVOR and ro.build.flavor are used only by the test
	# harness to distinguish builds. Only add _asan for a sanitized build
	# if it isn't already a part of the flavor (via a dedicated lunch
	# config for example).
	TARGET_BUILD_FLAVOR := $(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT)
	ifneq (, $(filter address, $(SANITIZE_TARGET)))
	ifeq (,$(findstring _asan,$(TARGET_BUILD_FLAVOR)))
	TARGET_BUILD_FLAVOR := $(TARGET_BUILD_FLAVOR)_asan
	endif
	endif

	KNOWN_OEM_THUMBPRINT_PROPERTIES := \
	ro.product.brand \
	ro.product.name \
	ro.product.device
	OEM_THUMBPRINT_PROPERTIES := $(filter $(KNOWN_OEM_THUMBPRINT_PROPERTIES),\
	$(PRODUCT_OEM_PROPERTIES))
	KNOWN_OEM_THUMBPRINT_PROPERTIES:=

	# -----------------------------------------------------------------
	# system/build.prop
	#
	# Note: parts of this file that can't be generated by the build-properties
	# macro are manually created as separate files and then fed into the macro

	# Accepts a whitespace separated list of product locales such as
	# (en_US en_AU en_GB...) and returns the first locale in the list with
	# underscores replaced with hyphens. In the example above, this will
	# return "en-US".
	define get-default-product-locale
	$(strip $(subst _,-, $(firstword $(1))))
	endef

	gen_from_buildinfo_sh := $(call intermediates-dir-for,PACKAGING,system_build_prop)/buildinfo.prop
	$(gen_from_buildinfo_sh): $(INTERNAL_BUILD_ID_MAKEFILE) $(API_FINGERPRINT) \| $(BUILD_DATETIME_FILE) $(BUILD_NUMBER_FILE)
	$(hide) TARGET_BUILD_TYPE="$(TARGET_BUILD_VARIANT)" \
	TARGET_BUILD_FLAVOR="$(TARGET_BUILD_FLAVOR)" \
	TARGET_DEVICE="$(TARGET_DEVICE)" \
	LINEAGE_DEVICE="$(TARGET_DEVICE)" \
	PRODUCT_DEFAULT_LOCALE="$(call get-default-product-locale,$(PRODUCT_LOCALES))" \
	PRODUCT_DEFAULT_WIFI_CHANNELS="$(PRODUCT_DEFAULT_WIFI_CHANNELS)" \
	PRIVATE_BUILD_DESC="$(BUILD_DESC)" \
	BUILD_ID="$(BUILD_ID)" \
	BUILD_DISPLAY_ID="$(BUILD_DISPLAY_ID)" \
	DATE="$(DATE_FROM_FILE)" \
	BUILD_USERNAME="$(BUILD_USERNAME)" \
	BUILD_HOSTNAME="$(BUILD_HOSTNAME)" \
	BUILD_NUMBER="$(BUILD_NUMBER_FROM_FILE)" \
	BOARD_BUILD_SYSTEM_ROOT_IMAGE="$(BOARD_BUILD_SYSTEM_ROOT_IMAGE)" \
	BOARD_USE_VBMETA_DIGTEST_IN_FINGERPRINT="$(BOARD_USE_VBMETA_DIGTEST_IN_FINGERPRINT)" \
	PLATFORM_VERSION="$(PLATFORM_VERSION)" \
	PLATFORM_DISPLAY_VERSION="$(PLATFORM_DISPLAY_VERSION)" \
	PLATFORM_VERSION_LAST_STABLE="$(PLATFORM_VERSION_LAST_STABLE)" \
	PLATFORM_SECURITY_PATCH="$(PLATFORM_SECURITY_PATCH)" \
	PLATFORM_BASE_OS="$(PLATFORM_BASE_OS)" \
	PLATFORM_SDK_VERSION="$(PLATFORM_SDK_VERSION)" \
	PLATFORM_PREVIEW_SDK_VERSION="$(PLATFORM_PREVIEW_SDK_VERSION)" \
	PLATFORM_PREVIEW_SDK_FINGERPRINT="$$(cat $(API_FINGERPRINT))" \
	PLATFORM_VERSION_CODENAME="$(PLATFORM_VERSION_CODENAME)" \
	PLATFORM_VERSION_ALL_CODENAMES="$(PLATFORM_VERSION_ALL_CODENAMES)" \
	PLATFORM_VERSION_KNOWN_CODENAMES="$(PLATFORM_VERSION_KNOWN_CODENAMES)" \
	PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION="$(PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION)" \
	BUILD_VERSION_TAGS="$(BUILD_VERSION_TAGS)" \
	$(if $(OEM_THUMBPRINT_PROPERTIES),BUILD_THUMBPRINT="$(BUILD_THUMBPRINT_FROM_FILE)") \
	TARGET_CPU_ABI_LIST="$(TARGET_CPU_ABI_LIST)" \
	TARGET_CPU_ABI_LIST_32_BIT="$(TARGET_CPU_ABI_LIST_32_BIT)" \
	TARGET_CPU_ABI_LIST_64_BIT="$(TARGET_CPU_ABI_LIST_64_BIT)" \
	TARGET_CPU_ABI="$(TARGET_CPU_ABI)" \
	TARGET_CPU_ABI2="$(TARGET_CPU_ABI2)" \
	ZYGOTE_FORCE_64_BIT="$(ZYGOTE_FORCE_64_BIT)" \
	$(PRODUCT_BUILD_PROP_OVERRIDES) \
	bash $(BUILDINFO_SH) > $@

	ifdef TARGET_SYSTEM_PROP
	system_prop_file := $(TARGET_SYSTEM_PROP)
	else
	system_prop_file := $(wildcard $(TARGET_DEVICE_DIR)/system.prop)
	endif

	_prop_files_ := \
	$(gen_from_buildinfo_sh) \
	$(system_prop_file)

	# Order matters here. When there are duplicates, the last one wins.
	# TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
	_prop_vars_ := \
	ADDITIONAL_SYSTEM_PROPERTIES \
	PRODUCT_SYSTEM_PROPERTIES

	# TODO(b/117892318): deprecate this
	_prop_vars_ += \
	PRODUCT_SYSTEM_DEFAULT_PROPERTIES

	ifndef property_overrides_split_enabled
	_prop_vars_ += \
	ADDITIONAL_VENDOR_PROPERTIES \
	PRODUCT_VENDOR_PROPERTIES
	endif

	INSTALLED_BUILD_PROP_TARGET := $(TARGET_OUT)/build.prop

	$(eval $(call build-properties,\
	system,\
	$(INSTALLED_BUILD_PROP_TARGET),\
	$(_prop_files_),\
	$(_prop_vars_),\
	$(PRODUCT_SYSTEM_PROPERTY_BLACKLIST),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_BUILD_PROP_TARGET)))

	# -----------------------------------------------------------------
	# vendor/build.prop
	#
	_prop_files_ := $(if $(TARGET_VENDOR_PROP),\
	$(TARGET_VENDOR_PROP),\
	$(wildcard $(TARGET_DEVICE_DIR)/vendor.prop))

	android_info_prop := $(call intermediates-dir-for,ETC,android_info_prop)/android_info.prop
	$(android_info_prop): $(INSTALLED_ANDROID_INFO_TXT_TARGET)
	cat $< \| grep 'require version-' \| sed -e 's/require version-/ro.build.expect./g' > $@

	_prop_files_ += $(android_info_prop)

	ifdef property_overrides_split_enabled
	# Order matters here. When there are duplicates, the last one wins.
	# TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
	_prop_vars_ := \
	ADDITIONAL_VENDOR_PROPERTIES \
	PRODUCT_VENDOR_PROPERTIES

	# TODO(b/117892318): deprecate this
	_prop_vars_ += \
	PRODUCT_DEFAULT_PROPERTY_OVERRIDES \
	PRODUCT_PROPERTY_OVERRIDES
	else
	_prop_vars_ :=
	endif

	INSTALLED_VENDOR_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR)/build.prop
	$(eval $(call build-properties,\
	vendor,\
	$(INSTALLED_VENDOR_BUILD_PROP_TARGET),\
	$(_prop_files_),\
	$(_prop_vars_),\
	$(PRODUCT_VENDOR_PROPERTY_BLACKLIST),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_VENDOR_BUILD_PROP_TARGET)))

	# -----------------------------------------------------------------
	# product/etc/build.prop
	#

	_prop_files_ := $(if $(TARGET_PRODUCT_PROP),\
	$(TARGET_PRODUCT_PROP),\
	$(wildcard $(TARGET_DEVICE_DIR)/product.prop))

	# Order matters here. When there are duplicates, the last one wins.
	# TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
	_prop_vars_ := \
	ADDITIONAL_PRODUCT_PROPERTIES \
	PRODUCT_PRODUCT_PROPERTIES

	INSTALLED_PRODUCT_BUILD_PROP_TARGET := $(TARGET_OUT_PRODUCT)/etc/build.prop

	ifdef PRODUCT_OEM_PROPERTIES
	import_oem_prop := $(call intermediates-dir-for,ETC,import_oem_prop)/oem.prop

	$(import_oem_prop):
	$(hide) echo "####################################" >> $@; \
	echo "# PRODUCT_OEM_PROPERTIES" >> $@; \
	echo "####################################" >> $@;
	$(hide) $(foreach prop,$(PRODUCT_OEM_PROPERTIES), \
	echo "import /oem/oem.prop $(prop)" >> $@;)

	_footers_ := $(import_oem_prop)
	else
	_footers_ :=
	endif

	# Skip common /product properties generation if device released before R and
	# has no product partition. This is the first part of the check.
	ifeq ($(call math_lt,$(if $(PRODUCT_SHIPPING_API_LEVEL),$(PRODUCT_SHIPPING_API_LEVEL),30),30), true)
	_skip_common_properties := true
	endif

	# The second part of the check - always generate common properties for the
	# devices with product partition regardless of shipping level.
	ifneq ($(BOARD_USES_PRODUCTIMAGE),)
	_skip_common_properties :=
	endif

	$(eval $(call build-properties,\
	product,\
	$(INSTALLED_PRODUCT_BUILD_PROP_TARGET),\
	$(_prop_files_),\
	$(_prop_vars_),\
	$(empty),\
	$(_footers_),\
	$(_skip_common_properties)))

	$(eval $(call declare-1p-target,$(INSTALLED_PRODUCT_BUILD_PROP_TARGET)))

	_skip_common_properties :=

	# ----------------------------------------------------------------
	# odm/etc/build.prop
	#
	_prop_files_ := $(if $(TARGET_ODM_PROP),\
	$(TARGET_ODM_PROP),\
	$(wildcard $(TARGET_DEVICE_DIR)/odm.prop))

	# Order matters here. When there are duplicates, the last one wins.
	# TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
	_prop_vars_ := \
	ADDITIONAL_ODM_PROPERTIES \
	PRODUCT_ODM_PROPERTIES

	INSTALLED_ODM_BUILD_PROP_TARGET := $(TARGET_OUT_ODM)/etc/build.prop
	$(eval $(call build-properties,\
	odm,\
	$(INSTALLED_ODM_BUILD_PROP_TARGET),\
	$(_prop_files_),\
	$(_prop_vars_),\
	$(empty),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_ODM_BUILD_PROP_TARGET)))

	# ----------------------------------------------------------------
	# vendor_dlkm/etc/build.prop
	#

	INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR_DLKM)/etc/build.prop
	$(eval $(call build-properties,\
	vendor_dlkm,\
	$(INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET)))

	# ----------------------------------------------------------------
	# odm_dlkm/etc/build.prop
	#

	INSTALLED_ODM_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_ODM_DLKM)/etc/build.prop
	$(eval $(call build-properties,\
	odm_dlkm,\
	$(INSTALLED_ODM_DLKM_BUILD_PROP_TARGET),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_ODM_DLKM_BUILD_PROP_TARGET)))

	# ----------------------------------------------------------------
	# system_dlkm/build.prop
	#

	INSTALLED_SYSTEM_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_SYSTEM_DLKM)/etc/build.prop
	$(eval $(call build-properties,\
	system_dlkm,\
	$(INSTALLED_SYSTEM_DLKM_BUILD_PROP_TARGET),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_SYSTEM_DLKM_BUILD_PROP_TARGET)))

	# -----------------------------------------------------------------
	# system_ext/etc/build.prop
	#
	_prop_files_ := $(if $(TARGET_SYSTEM_EXT_PROP),\
	$(TARGET_SYSTEM_EXT_PROP),\
	$(wildcard $(TARGET_DEVICE_DIR)/system_ext.prop))

	# Order matters here. When there are duplicates, the last one wins.
	# TODO(b/117892318): don't allow duplicates so that the ordering doesn't matter
	_prop_vars_ := PRODUCT_SYSTEM_EXT_PROPERTIES

	INSTALLED_SYSTEM_EXT_BUILD_PROP_TARGET := $(TARGET_OUT_SYSTEM_EXT)/etc/build.prop
	$(eval $(call build-properties,\
	system_ext,\
	$(INSTALLED_SYSTEM_EXT_BUILD_PROP_TARGET),\
	$(_prop_files_),\
	$(_prop_vars_),\
	$(empty),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_SYSTEM_EXT_BUILD_PROP_TARGET)))

	# ----------------------------------------------------------------
	# ramdisk/boot/etc/build.prop
	#

	RAMDISK_BUILD_PROP_REL_PATH := system/etc/ramdisk/build.prop
	INSTALLED_RAMDISK_BUILD_PROP_TARGET := $(TARGET_RAMDISK_OUT)/$(RAMDISK_BUILD_PROP_REL_PATH)
	$(eval $(call build-properties,\
	bootimage,\
	$(INSTALLED_RAMDISK_BUILD_PROP_TARGET),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty),\
	$(empty)))

	$(eval $(call declare-1p-target,$(INSTALLED_RAMDISK_BUILD_PROP_TARGET)))