rootdir/Android.mk - LeafOS-Project/android_system_core - Gitiles

 LOCAL_PATH:= $(call my-dir)

 #######################################
 # init.rc
 include $(CLEAR_VARS)

 LOCAL_MODULE := init.rc
 LOCAL_SRC_FILES := $(LOCAL_MODULE)
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

 # The init symlink must be a post install command of a file that is to TARGET_ROOT_OUT.
 # Since init.rc is required for init and satisfies that requirement, we hijack it to create the symlink.
 LOCAL_POST_INSTALL_CMD := ln -sf /system/bin/init $(TARGET_ROOT_OUT)/init

 include $(BUILD_PREBUILT)

 #######################################
 # init-debug.rc
 include $(CLEAR_VARS)

 LOCAL_MODULE := init-debug.rc
 LOCAL_SRC_FILES := $(LOCAL_MODULE)
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/init

 # Start of runtime APEX compatibility.
 #
 # Meta-comment:
 # The placing of this section is somewhat arbitrary. The LOCAL_POST_INSTALL_CMD
 # entries need to be associated with something that goes into /system.
 # init-debug.rc qualifies but it could be anything else in /system until soong
 # supports creation of symlinks. http://b/123333111
 #
 # Keeping the appearance of files/dirs having old locations for apps that have
 # come to rely on them.

 # http://b/121248172 - create a link from /system/usr/icu to
 # /apex/com.android.runtime/etc/icu so that apps can find the ICU .dat file.
 # A symlink can't overwrite a directory and the /system/usr/icu directory once
 # existed so the required structure must be created whatever we find.
 LOCAL_POST_INSTALL_CMD = mkdir -p $(TARGET_OUT)/usr && rm -rf $(TARGET_OUT)/usr/icu
 LOCAL_POST_INSTALL_CMD += ; ln -sf /apex/com.android.runtime/etc/icu $(TARGET_OUT)/usr/icu

 # TODO(b/124106384): Clean up compat symlinks for ART binaries.
 ART_BINARIES= \
   dalvikvm32 \
   dalvikvm64 \
   dex2oat \
   dexdiag \
   dexdump \
   dexlist \
   dexoptanalyzer \
   oatdump \
   profman \

 $(foreach b,$(ART_BINARIES), \
   $(eval LOCAL_POST_INSTALL_CMD += \
     ; ln -sf /apex/com.android.runtime/bin/$(b) $(TARGET_OUT)/bin/$(b)) \
 )

 # End of runtime APEX compatibilty.

 include $(BUILD_PREBUILT)

 #######################################
 # asan.options
 ifneq ($(filter address,$(SANITIZE_TARGET)),)

 include $(CLEAR_VARS)

 LOCAL_MODULE := asan.options
 LOCAL_MODULE_CLASS := ETC
 LOCAL_SRC_FILES := $(LOCAL_MODULE)
 LOCAL_MODULE_PATH := $(TARGET_OUT)

 include $(BUILD_PREBUILT)

 # ASAN extration.
 ASAN_EXTRACT_FILES :=
 ifeq ($(SANITIZE_TARGET_SYSTEM),true)
 include $(CLEAR_VARS)
 LOCAL_MODULE:= asan_extract
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE_CLASS := EXECUTABLES
 LOCAL_SRC_FILES := asan_extract.sh
 LOCAL_INIT_RC := asan_extract.rc
 # We need bzip2 on device for extraction.
 LOCAL_REQUIRED_MODULES := bzip2
 include $(BUILD_PREBUILT)
 ASAN_EXTRACT_FILES := asan_extract
 endif

 endif

 #######################################
 # init.environ.rc

 include $(CLEAR_VARS)
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE := init.environ.rc
 LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

 EXPORT_GLOBAL_ASAN_OPTIONS :=
 ifneq ($(filter address,$(SANITIZE_TARGET)),)
   EXPORT_GLOBAL_ASAN_OPTIONS := export ASAN_OPTIONS include=/system/asan.options
   LOCAL_REQUIRED_MODULES := asan.options $(ASAN_OPTIONS_FILES) $(ASAN_EXTRACT_FILES)
 endif

 EXPORT_GLOBAL_HWASAN_OPTIONS :=
 ifneq ($(filter hwaddress,$(SANITIZE_TARGET)),)
   ifneq ($(HWADDRESS_SANITIZER_GLOBAL_OPTIONS),)
     EXPORT_GLOBAL_HWASAN_OPTIONS := export HWASAN_OPTIONS $(HWADDRESS_SANITIZER_GLOBAL_OPTIONS)
   endif
 endif

 EXPORT_GLOBAL_GCOV_OPTIONS :=
 ifeq ($(NATIVE_COVERAGE),true)
   EXPORT_GLOBAL_GCOV_OPTIONS := export GCOV_PREFIX /data/misc/gcov
 endif

 # Put it here instead of in init.rc module definition,
 # because init.rc is conditionally included.
 #
 # create some directories (some are mount points) and symlinks
 LOCAL_POST_INSTALL_CMD := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \
     sbin dev proc sys system data odm oem acct config storage mnt apex $(BOARD_ROOT_EXTRA_FOLDERS)); \
     ln -sf /system/bin $(TARGET_ROOT_OUT)/bin; \
     ln -sf /system/etc $(TARGET_ROOT_OUT)/etc; \
     ln -sf /data/user_de/0/com.android.shell/files/bugreports $(TARGET_ROOT_OUT)/bugreports; \
     ln -sf /sys/kernel/debug $(TARGET_ROOT_OUT)/d; \
     ln -sf /storage/self/primary $(TARGET_ROOT_OUT)/sdcard
 ifdef BOARD_USES_VENDORIMAGE
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/vendor
 else
   LOCAL_POST_INSTALL_CMD += ; ln -sf /system/vendor $(TARGET_ROOT_OUT)/vendor
 endif
 ifdef BOARD_USES_PRODUCTIMAGE
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/product
 else
   LOCAL_POST_INSTALL_CMD += ; ln -sf /system/product $(TARGET_ROOT_OUT)/product
 endif
 ifdef BOARD_USES_PRODUCT_SERVICESIMAGE
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/product_services
 else
   LOCAL_POST_INSTALL_CMD += ; ln -sf /system/product_services $(TARGET_ROOT_OUT)/product_services
 endif
 ifdef BOARD_USES_METADATA_PARTITION
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/metadata
 endif

 # For /odm partition.
 LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/odm
 # For Treble Generic System Image (GSI), system-as-root GSI needs to work on
 # both devices with and without /odm partition. Those symlinks are for devices
 # without /odm partition. For devices with /odm partition, mount odm.img under
 # /odm will hide those symlinks.
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/app $(TARGET_ROOT_OUT)/odm/app
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/bin $(TARGET_ROOT_OUT)/odm/bin
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/etc $(TARGET_ROOT_OUT)/odm/etc
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/firmware $(TARGET_ROOT_OUT)/odm/firmware
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/framework $(TARGET_ROOT_OUT)/odm/framework
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/lib $(TARGET_ROOT_OUT)/odm/lib
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/lib64 $(TARGET_ROOT_OUT)/odm/lib64
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/overlay $(TARGET_ROOT_OUT)/odm/overlay
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/priv-app $(TARGET_ROOT_OUT)/odm/priv-app
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/usr $(TARGET_ROOT_OUT)/odm/usr

 ifdef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/cache
 else
   LOCAL_POST_INSTALL_CMD += ; ln -sf /data/cache $(TARGET_ROOT_OUT)/cache
 endif
 ifdef BOARD_ROOT_EXTRA_SYMLINKS
 # BOARD_ROOT_EXTRA_SYMLINKS is a list of <target>:<link_name>.
   LOCAL_POST_INSTALL_CMD += $(foreach s, $(BOARD_ROOT_EXTRA_SYMLINKS),\
     $(eval p := $(subst :,$(space),$(s)))\
     ; mkdir -p $(dir $(TARGET_ROOT_OUT)/$(word 2,$(p))) \
     ; ln -sf $(word 1,$(p)) $(TARGET_ROOT_OUT)/$(word 2,$(p)))
 endif
 # The A/B updater uses a top-level /postinstall directory to mount the new
 # system before reboot.
 ifeq ($(AB_OTA_UPDATER),true)
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/postinstall
 endif

 include $(BUILD_SYSTEM)/base_rules.mk

 $(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/init.environ.rc.in
 	@echo "Generate: $< -> $@"
 	@mkdir -p $(dir $@)
 	$(hide) sed -e 's?%BOOTCLASSPATH%?$(PRODUCT_BOOTCLASSPATH)?g' $< >$@
 	$(hide) sed -i -e 's?%SYSTEMSERVERCLASSPATH%?$(PRODUCT_SYSTEM_SERVER_CLASSPATH)?g' $@
 	$(hide) sed -i -e 's?%EXPORT_GLOBAL_ASAN_OPTIONS%?$(EXPORT_GLOBAL_ASAN_OPTIONS)?g' $@
 	$(hide) sed -i -e 's?%EXPORT_GLOBAL_GCOV_OPTIONS%?$(EXPORT_GLOBAL_GCOV_OPTIONS)?g' $@
 	$(hide) sed -i -e 's?%EXPORT_GLOBAL_HWASAN_OPTIONS%?$(EXPORT_GLOBAL_HWASAN_OPTIONS)?g' $@

 # Append PLATFORM_VNDK_VERSION to base name.
 define append_vndk_version
 $(strip \
   $(basename $(1)).$(PLATFORM_VNDK_VERSION)$(suffix $(1)) \
 )
 endef


 #######################################
 # ld.config.txt selection variables
 #
 _enforce_vndk_at_runtime := false
 ifdef BOARD_VNDK_VERSION
   ifneq ($(BOARD_VNDK_RUNTIME_DISABLE),true)
     _enforce_vndk_at_runtime := true
   endif
 endif

 _enforce_vndk_lite_at_runtime := false
 ifeq ($(_enforce_vndk_at_runtime),false)
   ifeq ($(PRODUCT_TREBLE_LINKER_NAMESPACES)|$(SANITIZE_TARGET),true|)
     _enforce_vndk_lite_at_runtime := true
   endif
 endif

 #######################################
 # ld.config.txt
 #
 # For VNDK enforced devices that have defined BOARD_VNDK_VERSION, use
 # "ld.config.txt" as a source file. This configuration includes strict VNDK
 # run-time restrictions for vendor process.
 #
 # Other treblized devices, that have not defined BOARD_VNDK_VERSION or that
 # have set BOARD_VNDK_RUNTIME_DISABLE to true, use "ld.config.vndk_lite.txt"
 # as a source file. This configuration does not have strict VNDK run-time
 # restrictions.
 #
 # If the device is not treblized, use "ld.config.legacy.txt" for legacy
 # namespace configuration.
 #
 include $(CLEAR_VARS)
 LOCAL_MODULE := ld.config.txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)

 ifeq ($(_enforce_vndk_at_runtime),true)

 # for VNDK enforced devices
 LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
 include $(BUILD_SYSTEM)/base_rules.mk
 ld_config_template := $(LOCAL_PATH)/etc/ld.config.txt
 check_backward_compatibility := true
 vndk_version := $(PLATFORM_VNDK_VERSION)
 include $(LOCAL_PATH)/update_and_install_ld_config.mk

 else ifeq ($(_enforce_vndk_lite_at_runtime),true)

 # for treblized but VNDK lightly enforced devices
 LOCAL_MODULE_STEM := ld.config.vndk_lite.txt
 include $(BUILD_SYSTEM)/base_rules.mk
 ld_config_template := $(LOCAL_PATH)/etc/ld.config.vndk_lite.txt
 vndk_version := $(PLATFORM_VNDK_VERSION)
 libz_is_llndk := true
 include $(LOCAL_PATH)/update_and_install_ld_config.mk

 else

 # for legacy non-treblized devices
 LOCAL_MODULE_STEM := $(LOCAL_MODULE)
 LOCAL_SRC_FILES := etc/ld.config.legacy.txt
 include $(BUILD_PREBUILT)

 endif  # ifeq ($(_enforce_vndk_at_runtime),true)

 # ld.config.txt for VNDK versions older than PLATFORM_VNDK_VERSION
 # are built with the VNDK libraries lists under /prebuilts/vndk.
 #
 # ld.config.$(VER).txt is built and installed for all VNDK versions
 # listed in PRODUCT_EXTRA_VNDK_VERSIONS.
 #
 # $(1): VNDK version
 define build_versioned_ld_config
 include $(CLEAR_VARS)
 LOCAL_MODULE := ld.config.$(1).txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
 LOCAL_MODULE_STEM := $$(LOCAL_MODULE)
 include $(BUILD_SYSTEM)/base_rules.mk
 ld_config_template := $(LOCAL_PATH)/etc/ld.config.txt
 check_backward_compatibility := true
 vndk_version := $(1)
 lib_list_from_prebuilts := true
 include $(LOCAL_PATH)/update_and_install_ld_config.mk
 endef

 vndk_snapshots := $(wildcard prebuilts/vndk/*)
 supported_vndk_snapshot_versions := \
   $(strip $(patsubst prebuilts/vndk/v%,%,$(vndk_snapshots)))
 $(foreach ver,$(supported_vndk_snapshot_versions),\
   $(eval $(call build_versioned_ld_config,$(ver))))

 vndk_snapshots :=
 supported_vndk_snapshot_versions :=

 #######################################
 # ld.config.vndk_lite.txt
 #
 # This module is only for GSI.
 #
 ifeq ($(_enforce_vndk_lite_at_runtime),false)

 include $(CLEAR_VARS)
 LOCAL_MODULE := ld.config.vndk_lite.txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
 LOCAL_MODULE_STEM := $(LOCAL_MODULE)
 include $(BUILD_SYSTEM)/base_rules.mk
 ld_config_template := $(LOCAL_PATH)/etc/ld.config.vndk_lite.txt
 vndk_version := $(PLATFORM_VNDK_VERSION)
 libz_is_llndk := true
 include $(LOCAL_PATH)/update_and_install_ld_config.mk

 endif  # ifeq ($(_enforce_vndk_lite_at_runtime),false)

 _enforce_vndk_at_runtime :=
 _enforce_vndk_lite_at_runtime :=

 #######################################
 # ld.config.txt for recovery
 include $(CLEAR_VARS)
 LOCAL_MODULE := ld.config.recovery.txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_SRC_FILES := etc/ld.config.recovery.txt
 LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/etc
 LOCAL_MODULE_STEM := ld.config.txt
 include $(BUILD_PREBUILT)

 #######################################
 # llndk.libraries.txt
 include $(CLEAR_VARS)
 LOCAL_MODULE := llndk.libraries.txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
 LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
 include $(BUILD_SYSTEM)/base_rules.mk
 $(LOCAL_BUILT_MODULE): PRIVATE_LLNDK_LIBRARIES := $(LLNDK_LIBRARIES)
 $(LOCAL_BUILT_MODULE):
 	@echo "Generate: $@"
 	@mkdir -p $(dir $@)
 	$(hide) echo -n > $@
 	$(hide) $(foreach lib,$(PRIVATE_LLNDK_LIBRARIES), \
 		echo $(lib).so >> $@;)

 #######################################
 # vndksp.libraries.txt
 include $(CLEAR_VARS)
 LOCAL_MODULE := vndksp.libraries.txt
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
 LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
 include $(BUILD_SYSTEM)/base_rules.mk
 $(LOCAL_BUILT_MODULE): PRIVATE_VNDK_SAMEPROCESS_LIBRARIES := $(VNDK_SAMEPROCESS_LIBRARIES)
 $(LOCAL_BUILT_MODULE):
 	@echo "Generate: $@"
 	@mkdir -p $(dir $@)
 	$(hide) echo -n > $@
 	$(hide) $(foreach lib,$(PRIVATE_VNDK_SAMEPROCESS_LIBRARIES), \
 		echo $(lib).so >> $@;)
	LOCAL_PATH:= $(call my-dir)

	#######################################
	# init.rc
	include $(CLEAR_VARS)

	LOCAL_MODULE := init.rc
	LOCAL_SRC_FILES := $(LOCAL_MODULE)
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

	# The init symlink must be a post install command of a file that is to TARGET_ROOT_OUT.
	# Since init.rc is required for init and satisfies that requirement, we hijack it to create the symlink.
	LOCAL_POST_INSTALL_CMD := ln -sf /system/bin/init $(TARGET_ROOT_OUT)/init

	include $(BUILD_PREBUILT)

	#######################################
	# init-debug.rc
	include $(CLEAR_VARS)

	LOCAL_MODULE := init-debug.rc
	LOCAL_SRC_FILES := $(LOCAL_MODULE)
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/init

	# Start of runtime APEX compatibility.
	#
	# Meta-comment:
	# The placing of this section is somewhat arbitrary. The LOCAL_POST_INSTALL_CMD
	# entries need to be associated with something that goes into /system.
	# init-debug.rc qualifies but it could be anything else in /system until soong
	# supports creation of symlinks. http://b/123333111
	#
	# Keeping the appearance of files/dirs having old locations for apps that have
	# come to rely on them.

	# http://b/121248172 - create a link from /system/usr/icu to
	# /apex/com.android.runtime/etc/icu so that apps can find the ICU .dat file.
	# A symlink can't overwrite a directory and the /system/usr/icu directory once
	# existed so the required structure must be created whatever we find.
	LOCAL_POST_INSTALL_CMD = mkdir -p $(TARGET_OUT)/usr && rm -rf $(TARGET_OUT)/usr/icu
	LOCAL_POST_INSTALL_CMD += ; ln -sf /apex/com.android.runtime/etc/icu $(TARGET_OUT)/usr/icu

	# TODO(b/124106384): Clean up compat symlinks for ART binaries.
	ART_BINARIES= \
	dalvikvm32 \
	dalvikvm64 \
	dex2oat \
	dexdiag \
	dexdump \
	dexlist \
	dexoptanalyzer \
	oatdump \
	profman \

	$(foreach b,$(ART_BINARIES), \
	$(eval LOCAL_POST_INSTALL_CMD += \
	; ln -sf /apex/com.android.runtime/bin/$(b) $(TARGET_OUT)/bin/$(b)) \
	)

	# End of runtime APEX compatibilty.

	include $(BUILD_PREBUILT)

	#######################################
	# asan.options
	ifneq ($(filter address,$(SANITIZE_TARGET)),)

	include $(CLEAR_VARS)

	LOCAL_MODULE := asan.options
	LOCAL_MODULE_CLASS := ETC
	LOCAL_SRC_FILES := $(LOCAL_MODULE)
	LOCAL_MODULE_PATH := $(TARGET_OUT)

	include $(BUILD_PREBUILT)

	# ASAN extration.
	ASAN_EXTRACT_FILES :=
	ifeq ($(SANITIZE_TARGET_SYSTEM),true)
	include $(CLEAR_VARS)
	LOCAL_MODULE:= asan_extract
	LOCAL_MODULE_TAGS := optional
	LOCAL_MODULE_CLASS := EXECUTABLES
	LOCAL_SRC_FILES := asan_extract.sh
	LOCAL_INIT_RC := asan_extract.rc
	# We need bzip2 on device for extraction.
	LOCAL_REQUIRED_MODULES := bzip2
	include $(BUILD_PREBUILT)
	ASAN_EXTRACT_FILES := asan_extract
	endif

	endif

	#######################################
	# init.environ.rc

	include $(CLEAR_VARS)
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE := init.environ.rc
	LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

	EXPORT_GLOBAL_ASAN_OPTIONS :=
	ifneq ($(filter address,$(SANITIZE_TARGET)),)
	EXPORT_GLOBAL_ASAN_OPTIONS := export ASAN_OPTIONS include=/system/asan.options
	LOCAL_REQUIRED_MODULES := asan.options $(ASAN_OPTIONS_FILES) $(ASAN_EXTRACT_FILES)
	endif

	EXPORT_GLOBAL_HWASAN_OPTIONS :=
	ifneq ($(filter hwaddress,$(SANITIZE_TARGET)),)
	ifneq ($(HWADDRESS_SANITIZER_GLOBAL_OPTIONS),)
	EXPORT_GLOBAL_HWASAN_OPTIONS := export HWASAN_OPTIONS $(HWADDRESS_SANITIZER_GLOBAL_OPTIONS)
	endif
	endif

	EXPORT_GLOBAL_GCOV_OPTIONS :=
	ifeq ($(NATIVE_COVERAGE),true)
	EXPORT_GLOBAL_GCOV_OPTIONS := export GCOV_PREFIX /data/misc/gcov
	endif

	# Put it here instead of in init.rc module definition,
	# because init.rc is conditionally included.
	#
	# create some directories (some are mount points) and symlinks
	LOCAL_POST_INSTALL_CMD := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \
	sbin dev proc sys system data odm oem acct config storage mnt apex $(BOARD_ROOT_EXTRA_FOLDERS)); \
	ln -sf /system/bin $(TARGET_ROOT_OUT)/bin; \
	ln -sf /system/etc $(TARGET_ROOT_OUT)/etc; \
	ln -sf /data/user_de/0/com.android.shell/files/bugreports $(TARGET_ROOT_OUT)/bugreports; \
	ln -sf /sys/kernel/debug $(TARGET_ROOT_OUT)/d; \
	ln -sf /storage/self/primary $(TARGET_ROOT_OUT)/sdcard
	ifdef BOARD_USES_VENDORIMAGE
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/vendor
	else
	LOCAL_POST_INSTALL_CMD += ; ln -sf /system/vendor $(TARGET_ROOT_OUT)/vendor
	endif
	ifdef BOARD_USES_PRODUCTIMAGE
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/product
	else
	LOCAL_POST_INSTALL_CMD += ; ln -sf /system/product $(TARGET_ROOT_OUT)/product
	endif
	ifdef BOARD_USES_PRODUCT_SERVICESIMAGE
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/product_services
	else
	LOCAL_POST_INSTALL_CMD += ; ln -sf /system/product_services $(TARGET_ROOT_OUT)/product_services
	endif
	ifdef BOARD_USES_METADATA_PARTITION
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/metadata
	endif

	# For /odm partition.
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/odm
	# For Treble Generic System Image (GSI), system-as-root GSI needs to work on
	# both devices with and without /odm partition. Those symlinks are for devices
	# without /odm partition. For devices with /odm partition, mount odm.img under
	# /odm will hide those symlinks.
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/app $(TARGET_ROOT_OUT)/odm/app
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/bin $(TARGET_ROOT_OUT)/odm/bin
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/etc $(TARGET_ROOT_OUT)/odm/etc
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/firmware $(TARGET_ROOT_OUT)/odm/firmware
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/framework $(TARGET_ROOT_OUT)/odm/framework
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/lib $(TARGET_ROOT_OUT)/odm/lib
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/lib64 $(TARGET_ROOT_OUT)/odm/lib64
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/overlay $(TARGET_ROOT_OUT)/odm/overlay
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/priv-app $(TARGET_ROOT_OUT)/odm/priv-app
	LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/odm/usr $(TARGET_ROOT_OUT)/odm/usr

	ifdef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/cache
	else
	LOCAL_POST_INSTALL_CMD += ; ln -sf /data/cache $(TARGET_ROOT_OUT)/cache
	endif
	ifdef BOARD_ROOT_EXTRA_SYMLINKS
	# BOARD_ROOT_EXTRA_SYMLINKS is a list of <target>:<link_name>.
	LOCAL_POST_INSTALL_CMD += $(foreach s, $(BOARD_ROOT_EXTRA_SYMLINKS),\
	$(eval p := $(subst :,$(space),$(s)))\
	; mkdir -p $(dir $(TARGET_ROOT_OUT)/$(word 2,$(p))) \
	; ln -sf $(word 1,$(p)) $(TARGET_ROOT_OUT)/$(word 2,$(p)))
	endif
	# The A/B updater uses a top-level /postinstall directory to mount the new
	# system before reboot.
	ifeq ($(AB_OTA_UPDATER),true)
	LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/postinstall
	endif

	include $(BUILD_SYSTEM)/base_rules.mk

	$(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/init.environ.rc.in
	@echo "Generate: $< -> $@"
	@mkdir -p $(dir $@)
	$(hide) sed -e 's?%BOOTCLASSPATH%?$(PRODUCT_BOOTCLASSPATH)?g' $< >$@
	$(hide) sed -i -e 's?%SYSTEMSERVERCLASSPATH%?$(PRODUCT_SYSTEM_SERVER_CLASSPATH)?g' $@
	$(hide) sed -i -e 's?%EXPORT_GLOBAL_ASAN_OPTIONS%?$(EXPORT_GLOBAL_ASAN_OPTIONS)?g' $@
	$(hide) sed -i -e 's?%EXPORT_GLOBAL_GCOV_OPTIONS%?$(EXPORT_GLOBAL_GCOV_OPTIONS)?g' $@
	$(hide) sed -i -e 's?%EXPORT_GLOBAL_HWASAN_OPTIONS%?$(EXPORT_GLOBAL_HWASAN_OPTIONS)?g' $@

	# Append PLATFORM_VNDK_VERSION to base name.
	define append_vndk_version
	$(strip \
	$(basename $(1)).$(PLATFORM_VNDK_VERSION)$(suffix $(1)) \
	)
	endef


	#######################################
	# ld.config.txt selection variables
	#
	_enforce_vndk_at_runtime := false
	ifdef BOARD_VNDK_VERSION
	ifneq ($(BOARD_VNDK_RUNTIME_DISABLE),true)
	_enforce_vndk_at_runtime := true
	endif
	endif

	_enforce_vndk_lite_at_runtime := false
	ifeq ($(_enforce_vndk_at_runtime),false)
	ifeq ($(PRODUCT_TREBLE_LINKER_NAMESPACES)\|$(SANITIZE_TARGET),true\|)
	_enforce_vndk_lite_at_runtime := true
	endif
	endif

	#######################################
	# ld.config.txt
	#
	# For VNDK enforced devices that have defined BOARD_VNDK_VERSION, use
	# "ld.config.txt" as a source file. This configuration includes strict VNDK
	# run-time restrictions for vendor process.
	#
	# Other treblized devices, that have not defined BOARD_VNDK_VERSION or that
	# have set BOARD_VNDK_RUNTIME_DISABLE to true, use "ld.config.vndk_lite.txt"
	# as a source file. This configuration does not have strict VNDK run-time
	# restrictions.
	#
	# If the device is not treblized, use "ld.config.legacy.txt" for legacy
	# namespace configuration.
	#
	include $(CLEAR_VARS)
	LOCAL_MODULE := ld.config.txt
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)

	ifeq ($(_enforce_vndk_at_runtime),true)

	# for VNDK enforced devices
	LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
	include $(BUILD_SYSTEM)/base_rules.mk
	ld_config_template := $(LOCAL_PATH)/etc/ld.config.txt
	check_backward_compatibility := true
	vndk_version := $(PLATFORM_VNDK_VERSION)
	include $(LOCAL_PATH)/update_and_install_ld_config.mk

	else ifeq ($(_enforce_vndk_lite_at_runtime),true)

	# for treblized but VNDK lightly enforced devices
	LOCAL_MODULE_STEM := ld.config.vndk_lite.txt
	include $(BUILD_SYSTEM)/base_rules.mk
	ld_config_template := $(LOCAL_PATH)/etc/ld.config.vndk_lite.txt
	vndk_version := $(PLATFORM_VNDK_VERSION)
	libz_is_llndk := true
	include $(LOCAL_PATH)/update_and_install_ld_config.mk

	else

	# for legacy non-treblized devices
	LOCAL_MODULE_STEM := $(LOCAL_MODULE)
	LOCAL_SRC_FILES := etc/ld.config.legacy.txt
	include $(BUILD_PREBUILT)

	endif # ifeq ($(_enforce_vndk_at_runtime),true)

	# ld.config.txt for VNDK versions older than PLATFORM_VNDK_VERSION
	# are built with the VNDK libraries lists under /prebuilts/vndk.
	#
	# ld.config.$(VER).txt is built and installed for all VNDK versions
	# listed in PRODUCT_EXTRA_VNDK_VERSIONS.
	#
	# $(1): VNDK version
	define build_versioned_ld_config
	include $(CLEAR_VARS)
	LOCAL_MODULE := ld.config.$(1).txt
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
	LOCAL_MODULE_STEM := $$(LOCAL_MODULE)
	include $(BUILD_SYSTEM)/base_rules.mk
	ld_config_template := $(LOCAL_PATH)/etc/ld.config.txt
	check_backward_compatibility := true
	vndk_version := $(1)
	lib_list_from_prebuilts := true
	include $(LOCAL_PATH)/update_and_install_ld_config.mk
	endef

	vndk_snapshots := $(wildcard prebuilts/vndk/*)
	supported_vndk_snapshot_versions := \
	$(strip $(patsubst prebuilts/vndk/v%,%,$(vndk_snapshots)))
	$(foreach ver,$(supported_vndk_snapshot_versions),\
	$(eval $(call build_versioned_ld_config,$(ver))))

	vndk_snapshots :=
	supported_vndk_snapshot_versions :=

	#######################################
	# ld.config.vndk_lite.txt
	#
	# This module is only for GSI.
	#
	ifeq ($(_enforce_vndk_lite_at_runtime),false)

	include $(CLEAR_VARS)
	LOCAL_MODULE := ld.config.vndk_lite.txt
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
	LOCAL_MODULE_STEM := $(LOCAL_MODULE)
	include $(BUILD_SYSTEM)/base_rules.mk
	ld_config_template := $(LOCAL_PATH)/etc/ld.config.vndk_lite.txt
	vndk_version := $(PLATFORM_VNDK_VERSION)
	libz_is_llndk := true
	include $(LOCAL_PATH)/update_and_install_ld_config.mk

	endif # ifeq ($(_enforce_vndk_lite_at_runtime),false)

	_enforce_vndk_at_runtime :=
	_enforce_vndk_lite_at_runtime :=

	#######################################
	# ld.config.txt for recovery
	include $(CLEAR_VARS)
	LOCAL_MODULE := ld.config.recovery.txt
	LOCAL_MODULE_CLASS := ETC
	LOCAL_SRC_FILES := etc/ld.config.recovery.txt
	LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/etc
	LOCAL_MODULE_STEM := ld.config.txt
	include $(BUILD_PREBUILT)

	#######################################
	# llndk.libraries.txt
	include $(CLEAR_VARS)
	LOCAL_MODULE := llndk.libraries.txt
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
	LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
	include $(BUILD_SYSTEM)/base_rules.mk
	$(LOCAL_BUILT_MODULE): PRIVATE_LLNDK_LIBRARIES := $(LLNDK_LIBRARIES)
	$(LOCAL_BUILT_MODULE):
	@echo "Generate: $@"
	@mkdir -p $(dir $@)
	$(hide) echo -n > $@
	$(hide) $(foreach lib,$(PRIVATE_LLNDK_LIBRARIES), \
	echo $(lib).so >> $@;)

	#######################################
	# vndksp.libraries.txt
	include $(CLEAR_VARS)
	LOCAL_MODULE := vndksp.libraries.txt
	LOCAL_MODULE_CLASS := ETC
	LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)
	LOCAL_MODULE_STEM := $(call append_vndk_version,$(LOCAL_MODULE))
	include $(BUILD_SYSTEM)/base_rules.mk
	$(LOCAL_BUILT_MODULE): PRIVATE_VNDK_SAMEPROCESS_LIBRARIES := $(VNDK_SAMEPROCESS_LIBRARIES)
	$(LOCAL_BUILT_MODULE):
	@echo "Generate: $@"
	@mkdir -p $(dir $@)
	$(hide) echo -n > $@
	$(hide) $(foreach lib,$(PRIVATE_VNDK_SAMEPROCESS_LIBRARIES), \
	echo $(lib).so >> $@;)