Merge "Switch to clang-4393122."
diff --git a/core/Makefile b/core/Makefile
index c913553..08188a5 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -70,6 +70,27 @@
 	@cp -f $< $@
 endif
 
+ndk_doxygen_out := $(OUT_NDK_DOCS)
+ndk_headers := $(SOONG_OUT_DIR)/ndk/sysroot/usr/include
+ndk_docs_src_dir := frameworks/native/docs
+ndk_doxyfile := $(ndk_docs_src_dir)/Doxyfile
+ifneq ($(wildcard $(ndk_docs_src_dir)),)
+ndk_docs_srcs := $(addprefix $(ndk_docs_src_dir)/,\
+    $(call find-files-in-subdirs,$(ndk_docs_src_dir),"*",.))
+$(ndk_doxygen_out)/index.html: $(ndk_docs_srcs) $(SOONG_OUT_DIR)/ndk.timestamp
+	@mkdir -p $(ndk_doxygen_out)
+	@echo "Generating NDK docs to $(ndk_doxygen_out)"
+	@( cat $(ndk_doxyfile); \
+	    echo "INPUT=$(ndk_headers)"; \
+	    echo "HTML_OUTPUT=$(ndk_doxygen_out)" \
+	) | doxygen -
+
+# Note: Not a part of the docs target because we don't have doxygen available.
+# You can run this target locally if you have doxygen installed.
+ndk-docs: $(ndk_doxygen_out)/index.html
+.PHONY: ndk-docs
+endif
+
 # -----------------------------------------------------------------
 # property_overrides_split_enabled
 property_overrides_split_enabled :=
@@ -78,8 +99,13 @@
 endif
 
 # -----------------------------------------------------------------
-# default.prop
+# prop.default
+ifdef property_overrides_split_enabled
+INSTALLED_DEFAULT_PROP_TARGET := $(TARGET_OUT)/etc/prop.default
+else
+# legacy path
 INSTALLED_DEFAULT_PROP_TARGET := $(TARGET_ROOT_OUT)/default.prop
+endif
 ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_DEFAULT_PROP_TARGET)
 FINAL_DEFAULT_PROPERTIES := \
     $(call collapse-pairs, $(ADDITIONAL_DEFAULT_PROPERTIES))
@@ -95,6 +121,7 @@
 $(INSTALLED_DEFAULT_PROP_TARGET): $(intermediate_system_build_prop)
 	@echo Target buildinfo: $@
 	@mkdir -p $(dir $@)
+	@rm -f $@
 	$(hide) echo "#" > $@; \
 	        echo "# ADDITIONAL_DEFAULT_PROPERTIES" >> $@; \
 	        echo "#" >> $@;
@@ -107,6 +134,10 @@
 	$(hide) echo ro.bootimage.build.date.utc=`$(DATE_FROM_FILE) +%s`>>$@
 	$(hide) echo ro.bootimage.build.fingerprint="$(BUILD_FINGERPRINT_FROM_FILE)">>$@
 	$(hide) build/tools/post_process_props.py $@
+ifdef property_overrides_split_enabled
+	$(hide) mkdir -p $(TARGET_ROOT_OUT)
+	$(hide) ln -sf system/etc/prop.default $(TARGET_ROOT_OUT)/default.prop
+endif
 
 # -----------------------------------------------------------------
 # vendor default.prop
@@ -115,6 +146,11 @@
 INSTALLED_VENDOR_DEFAULT_PROP_TARGET := $(TARGET_OUT_VENDOR)/default.prop
 ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_VENDOR_DEFAULT_PROP_TARGET)
 
+ifdef BOARD_VNDK_VERSION
+FINAL_VENDOR_DEFAULT_PROPERTIES := ro.vndk.version=${BOARD_VNDK_VERSION}
+else
+FINAL_VENDOR_DEFAULT_PROPERTIES :=
+endif
 FINAL_VENDOR_DEFAULT_PROPERTIES += \
     $(call collapse-pairs, $(PRODUCT_DEFAULT_PROPERTY_OVERRIDES))
 FINAL_VENDOR_DEFAULT_PROPERTIES := $(call uniq-pairs-by-first-component, \
@@ -167,9 +203,7 @@
 # The string used to uniquely identify the combined build and product; used by the OTA server.
 ifeq (,$(strip $(BUILD_FINGERPRINT)))
   ifneq ($(filter eng.%,$(BUILD_NUMBER)),)
-    # Trim down BUILD_FINGERPRINT: the default BUILD_NUMBER makes it easily exceed
-    # the Android system property length limit (PROPERTY_VALUE_MAX=92).
-    BF_BUILD_NUMBER := $(shell echo $${USER:0:6})$(shell $(DATE) +%m%d%H%M)
+    BF_BUILD_NUMBER := $(USER)$(shell $(DATE) +%m%d%H%M)
   else
     BF_BUILD_NUMBER := $(BUILD_NUMBER)
   endif
@@ -241,7 +275,7 @@
 else
 system_prop_file := $(wildcard $(TARGET_DEVICE_DIR)/system.prop)
 endif
-$(intermediate_system_build_prop): $(VENDOR_BUILDINFO_SH) $(BUILDINFO_SH) $(INTERNAL_BUILD_ID_MAKEFILE) $(BUILD_SYSTEM)/version_defaults.mk $(system_prop_file) $(INSTALLED_ANDROID_INFO_TXT_TARGET)
+$(intermediate_system_build_prop): $(BUILDINFO_SH) $(INTERNAL_BUILD_ID_MAKEFILE) $(BUILD_SYSTEM)/version_defaults.mk $(system_prop_file) $(INSTALLED_ANDROID_INFO_TXT_TARGET)
 	@echo Target buildinfo: $@
 	@mkdir -p $(dir $@)
 	$(hide) echo > $@
@@ -285,11 +319,6 @@
 			TARGET_CPU_ABI2="$(TARGET_CPU_ABI2)" \
 			TARGET_AAPT_CHARACTERISTICS="$(TARGET_AAPT_CHARACTERISTICS)" \
 	        bash $(BUILDINFO_SH) >> $@
-ifndef property_overrides_split_enabled
-	$(hide) TARGET_BOOTLOADER_BOARD_NAME="$(TARGET_BOOTLOADER_BOARD_NAME)" \
-			TARGET_BOARD_PLATFORM="$(TARGET_BOARD_PLATFORM)" \
-	        bash $(VENDOR_BUILDINFO_SH) >> $@
-endif
 	$(hide) $(foreach file,$(system_prop_file), \
 		if [ -f "$(file)" ]; then \
 			echo "#" >> $@; \
@@ -318,7 +347,7 @@
 
 $(INSTALLED_BUILD_PROP_TARGET): $(intermediate_system_build_prop) $(INSTALLED_RECOVERYIMAGE_TARGET)
 	@echo "Target build info: $@"
-	$(hide) cat $(intermediate_system_build_prop) > $@
+	$(hide) grep -v 'ro.product.first_api_level' $(intermediate_system_build_prop) > $@
 ifdef INSTALLED_RECOVERYIMAGE_TARGET
 	$(hide) echo ro.expect.recovery_id=`cat $(RECOVERYIMAGE_ID_FILE)` >> $@
 endif
@@ -327,7 +356,6 @@
 # vendor build.prop
 #
 # For verifying that the vendor build is what we think it is
-ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
 INSTALLED_VENDOR_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR)/build.prop
 ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_VENDOR_BUILD_PROP_TARGET)
 
@@ -338,17 +366,23 @@
     $(FINAL_VENDOR_BUILD_PROPERTIES),=)
 endif  # property_overrides_split_enabled
 
-$(INSTALLED_VENDOR_BUILD_PROP_TARGET): $(VENDOR_BUILDINFO_SH)
+$(INSTALLED_VENDOR_BUILD_PROP_TARGET): $(VENDOR_BUILDINFO_SH) $(intermediate_system_build_prop)
 	@echo Target vendor buildinfo: $@
 	@mkdir -p $(dir $@)
 	$(hide) echo > $@
+	$(hide) grep 'ro.product.first_api_level' $(intermediate_system_build_prop) >> $@ || true
 	$(hide) echo ro.vendor.build.date=`$(DATE_FROM_FILE)`>>$@
 	$(hide) echo ro.vendor.build.date.utc=`$(DATE_FROM_FILE) +%s`>>$@
 	$(hide) echo ro.vendor.build.fingerprint="$(BUILD_FINGERPRINT_FROM_FILE)">>$@
-ifdef property_overrides_split_enabled
-	$(hide) TARGET_BOOTLOADER_BOARD_NAME="$(TARGET_BOOTLOADER_BOARD_NAME)" \
+	$(hide) TARGET_DEVICE="$(TARGET_DEVICE)" \
+			PRODUCT_NAME="$(TARGET_PRODUCT)" \
+			PRODUCT_BRAND="$(PRODUCT_BRAND)" \
+			PRODUCT_MODEL="$(PRODUCT_MODEL)" \
+			PRODUCT_MANUFACTURER="$(PRODUCT_MANUFACTURER)" \
+			TARGET_BOOTLOADER_BOARD_NAME="$(TARGET_BOOTLOADER_BOARD_NAME)" \
 			TARGET_BOARD_PLATFORM="$(TARGET_BOARD_PLATFORM)" \
 	        bash $(VENDOR_BUILDINFO_SH) >> $@
+ifdef property_overrides_split_enabled
 	$(hide) echo "#" >> $@; \
 	        echo "# ADDITIONAL VENDOR BUILD PROPERTIES" >> $@; \
 	        echo "#" >> $@;
@@ -356,7 +390,6 @@
 		echo "$(line)" >> $@;)
 	$(hide) build/tools/post_process_props.py $@
 endif  # property_overrides_split_enabled
-endif  # BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
 
 # ----------------------------------------------------------------
 
@@ -947,10 +980,6 @@
 
 INTERNAL_USERIMAGES_DEPS += $(BLK_ALLOC_TO_BASE_FS)
 
-INTERNAL_USERIMAGES_DEPS += \
-    $(ALL_MODULES.fs_config_dirs.INSTALLED) \
-    $(ALL_MODULES.fs_config_files.INSTALLED) \
-
 ifeq ($(INTERNAL_USERIMAGES_USE_EXT),true)
 INTERNAL_USERIMAGES_DEPS += $(MKE2FS_CONF)
 endif
@@ -1208,12 +1237,13 @@
     $(hide) cp -f $(recovery_wipe) $(TARGET_RECOVERY_ROOT_OUT)/etc/recovery.wipe)
   $(hide) cp $(RECOVERY_INSTALL_OTA_KEYS) $(TARGET_RECOVERY_ROOT_OUT)/res/keys
   $(hide) cat $(INSTALLED_DEFAULT_PROP_TARGET) \
-          > $(TARGET_RECOVERY_ROOT_OUT)/default.prop
+          > $(TARGET_RECOVERY_ROOT_OUT)/prop.default
   $(if $(INSTALLED_VENDOR_DEFAULT_PROP_TARGET), \
     $(hide) cat $(INSTALLED_VENDOR_DEFAULT_PROP_TARGET) \
-            >> $(TARGET_RECOVERY_ROOT_OUT)/default.prop)
+            >> $(TARGET_RECOVERY_ROOT_OUT)/prop.default)
   $(hide) cat $(recovery_build_props) \
-          >> $(TARGET_RECOVERY_ROOT_OUT)/default.prop
+          >> $(TARGET_RECOVERY_ROOT_OUT)/prop.default
+  $(hide) ln -sf prop.default $(TARGET_RECOVERY_ROOT_OUT)/default.prop
   $(BOARD_RECOVERY_IMAGE_PREPARE)
   $(if $(filter true,$(BOARD_BUILD_SYSTEM_ROOT_IMAGE)), \
     $(hide) mkdir -p $(TARGET_RECOVERY_ROOT_OUT)/system_root; \
@@ -2525,7 +2555,7 @@
 ifeq ($(PRODUCT_FULL_TREBLE),true)
 	@# Metadata for compatibility verification.
 	$(hide) cp $(BUILT_SYSTEM_MANIFEST) $(zip_root)/META/system_manifest.xml
-	$(hide) cp $(BUILT_SYSTEM_COMPATIBILITY_MATRIX) $(zip_root)/META/system_compatibility_matrix.xml
+	$(hide) cp $(BUILT_SYSTEM_COMPATIBILITY_MATRIX) $(zip_root)/META/system_matrix.xml
 ifdef BUILT_VENDOR_MANIFEST
 	$(hide) cp $(BUILT_VENDOR_MANIFEST) $(zip_root)/META/vendor_manifest.xml
 endif
@@ -2625,7 +2655,7 @@
 name := $(name)-symbols-$(FILE_NAME_TAG)
 
 SYMBOLS_ZIP := $(PRODUCT_OUT)/$(name).zip
-# For apps_only build we'll establish the dependency later in build/core/main.mk.
+# For apps_only build we'll establish the dependency later in build/make/core/main.mk.
 ifndef TARGET_BUILD_APPS
 $(SYMBOLS_ZIP): $(INSTALLED_SYSTEMIMAGE) \
 		$(INSTALLED_BOOTIMAGE_TARGET) \
@@ -2691,7 +2721,7 @@
 # An archive of classes for use in generating code-coverage reports
 # These are the uninstrumented versions of any classes that were
 # to be instrumented.
-# Any dependencies are set up later in build/core/main.mk.
+# Any dependencies are set up later in build/make/core/main.mk.
 
 JACOCO_REPORT_CLASSES_ALL := $(PRODUCT_OUT)/jacoco-report-classes-all.jar
 $(JACOCO_REPORT_CLASSES_ALL) :
@@ -2713,7 +2743,7 @@
 #
 ifdef TARGET_BUILD_APPS
 PROGUARD_DICT_ZIP := $(PRODUCT_OUT)/$(TARGET_PRODUCT)-proguard-dict-$(FILE_NAME_TAG).zip
-# the dependency will be set up later in build/core/main.mk.
+# the dependency will be set up later in build/make/core/main.mk.
 $(PROGUARD_DICT_ZIP) :
 	@echo "Packaging Proguard obfuscation dictionary files."
 	$(hide) dict_files=`find $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS -name proguard_dictionary`; \
diff --git a/core/base_rules.mk b/core/base_rules.mk
index a178b55..a5ba75b 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -96,6 +96,13 @@
 # base_rules.mk, but it will fix the most common ones.
 LOCAL_ADDITIONAL_DEPENDENCIES := $(filter-out %.mk,$(LOCAL_ADDITIONAL_DEPENDENCIES))
 
+my_bad_deps := $(strip $(foreach dep,$(filter-out | ||,$(LOCAL_ADDITIONAL_DEPENDENCIES)),\
+                 $(if $(findstring /,$(dep)),,$(dep))))
+ifneq ($(my_bad_deps),)
+$(call pretty-warning,"Bad LOCAL_ADDITIONAL_DEPENDENCIES: $(my_bad_deps)")
+$(call pretty-error,"LOCAL_ADDITIONAL_DEPENDENCIES must only contain paths (not module names)")
+endif
+
 ###########################################################
 ## Validate and define fallbacks for input LOCAL_* variables.
 ###########################################################
diff --git a/core/binary.mk b/core/binary.mk
index 3e31d9a..bd1e601 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -62,8 +62,8 @@
 my_export_c_include_deps := $(LOCAL_EXPORT_C_INCLUDE_DEPS)
 my_arflags :=
 
-ifneq (,$(strip $(foreach dir,$(subst $(comma),$(space),$(COVERAGE_PATHS)),$(filter $(dir)%,$(LOCAL_PATH)))))
-ifeq (,$(strip $(foreach dir,$(subst $(comma),$(space),$(COVERAGE_EXCLUDE_PATHS)),$(filter $(dir)%,$(LOCAL_PATH)))))
+ifneq (,$(strip $(foreach dir,$(COVERAGE_PATHS),$(filter $(dir)%,$(LOCAL_PATH)))))
+ifeq (,$(strip $(foreach dir,$(COVERAGE_EXCLUDE_PATHS),$(filter $(dir)%,$(LOCAL_PATH)))))
   my_native_coverage := true
 else
   my_native_coverage := false
diff --git a/core/build_id.mk b/core/build_id.mk
index 0690c04..00272aa 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-export BUILD_ID=OC
+export BUILD_ID=OC-DR1
diff --git a/core/cleanbuild.mk b/core/cleanbuild.mk
index 64c5ae1..5576785 100644
--- a/core/cleanbuild.mk
+++ b/core/cleanbuild.mk
@@ -21,7 +21,7 @@
 TOP := .
 TOPDIR :=
 
-BUILD_SYSTEM := $(TOPDIR)build/core
+BUILD_SYSTEM := $(TOPDIR)build/make/core
 
 # Set up various standard variables based on configuration
 # and host information.
@@ -48,7 +48,7 @@
 #
 # $(1): shell command to run
 # $(2): indicate to not use makefile path as part of step id if not empty.
-#       $(2) should only be used in build/core/cleanspec.mk: just for compatibility.
+#       $(2) should only be used in build/make/core/cleanspec.mk: just for compatibility.
 define _add-clean-step
   $(if $(strip $(INTERNAL_CLEAN_BUILD_VERSION)),, \
       $(error INTERNAL_CLEAN_BUILD_VERSION not set))
@@ -67,7 +67,7 @@
   $(eval _acs_makefile_prefix :=)
 endef
 define add-clean-step
-$(eval # for build/core/cleanspec.mk, dont use makefile path as part of step id) \
+$(eval # for build/make/core/cleanspec.mk, dont use makefile path as part of step id) \
 $(if $(filter %/cleanspec.mk,$(lastword $(MAKEFILE_LIST))),\
     $(eval $(call _add-clean-step,$(1),true)),\
     $(eval $(call _add-clean-step,$(1))))
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index b5bb963..1e64c4f 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -200,6 +200,7 @@
 # lite(default),micro,nano,stream,full,nanopb-c,nanopb-c-enable_malloc
 LOCAL_PROTOC_OPTIMIZE_TYPE:=
 LOCAL_PROTO_JAVA_OUTPUT_PARAMS:=
+LOCAL_R8_FLAG_FILES:=
 LOCAL_RECORDED_MODULE_TYPE:=
 LOCAL_RENDERSCRIPT_CC:=
 LOCAL_RENDERSCRIPT_COMPATIBILITY:=
diff --git a/core/combo/arch/x86/atom.mk b/core/combo/arch/x86/atom.mk
index d313a9a..43a170c 100644
--- a/core/combo/arch/x86/atom.mk
+++ b/core/combo/arch/x86/atom.mk
@@ -2,7 +2,7 @@
 # 'x86-atom' arch variant. This is an extension of the 'x86' base variant
 # that adds Atom-specific features.
 #
-# See build/core/combo/arch/x86/x86.mk for differences.
+# See build/make/core/combo/arch/x86/x86.mk for differences.
 #
 ARCH_X86_HAVE_SSSE3 := true
 ARCH_X86_HAVE_MOVBE := true
diff --git a/core/combo/arch/x86/silvermont.mk b/core/combo/arch/x86/silvermont.mk
index 70b718c..cba1079 100644
--- a/core/combo/arch/x86/silvermont.mk
+++ b/core/combo/arch/x86/silvermont.mk
@@ -1,7 +1,7 @@
 # This file contains feature macro definitions specific to the
 # silvermont arch variant.
 #
-# See build/core/combo/arch/x86/x86-atom.mk for differences.
+# See build/make/core/combo/arch/x86/x86-atom.mk for differences.
 #
 
 ARCH_X86_HAVE_SSSE3  := true
diff --git a/core/combo/arch/x86_64/silvermont.mk b/core/combo/arch/x86_64/silvermont.mk
index 70b718c..cba1079 100644
--- a/core/combo/arch/x86_64/silvermont.mk
+++ b/core/combo/arch/x86_64/silvermont.mk
@@ -1,7 +1,7 @@
 # This file contains feature macro definitions specific to the
 # silvermont arch variant.
 #
-# See build/core/combo/arch/x86/x86-atom.mk for differences.
+# See build/make/core/combo/arch/x86/x86-atom.mk for differences.
 #
 
 ARCH_X86_HAVE_SSSE3  := true
diff --git a/core/config.mk b/core/config.mk
index 7007c5d..4ff3648 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -511,12 +511,6 @@
 
 USE_PREBUILT_SDK_TOOLS_IN_PLACE := true
 
-# USE_D8_BY_DEFAULT is the default behavior, use USE_D8 to override.
-USE_D8_BY_DEFAULT := false
-ifndef USE_D8
-  USE_D8 := $(USE_D8_BY_DEFAULT)
-endif
-
 #
 # Tools that are prebuilts for TARGET_BUILD_APPS
 #
@@ -529,12 +523,7 @@
   SIGNAPK_JAR := $(HOST_OUT_JAVA_LIBRARIES)/signapk$(COMMON_JAVA_PACKAGE_SUFFIX)
   SIGNAPK_JNI_LIBRARY_PATH := $(HOST_OUT_SHARED_LIBRARIES)
   ZIPALIGN := $(HOST_OUT_EXECUTABLES)/zipalign
-
-  ifeq ($(USE_D8),true)
-    DX := $(HOST_OUT_EXECUTABLES)/d8
-  else
-    DX := $(HOST_OUT_EXECUTABLES)/dx
-  endif
+  R8 := $(HOST_OUT_EXECUTABLES)/r8
 
 else # TARGET_BUILD_APPS || TARGET_BUILD_PDK
   AIDL := $(prebuilt_sdk_tools_bin)/aidl
@@ -545,16 +534,9 @@
   SIGNAPK_JAR := $(prebuilt_sdk_tools)/lib/signapk$(COMMON_JAVA_PACKAGE_SUFFIX)
   SIGNAPK_JNI_LIBRARY_PATH := $(prebuilt_sdk_tools)/$(HOST_OS)/lib64
   ZIPALIGN := $(prebuilt_sdk_tools_bin)/zipalign
-
-  ifeq ($(USE_D8),true)
-    DX := $(prebuilt_build_tools_wrappers)/d8
-  else
-    DX := $(prebuilt_build_tools_wrappers)/dx
-  endif
+  R8 := $(prebuilt_build_tools_wrappers)/r8
 endif # TARGET_BUILD_APPS || TARGET_BUILD_PDK
 
-DX_COMMAND := $(DX) -JXms16M -JXmx2048M
-
 ifeq (,$(TARGET_BUILD_APPS))
   # Use RenderScript prebuilts for unbundled builds but not PDK builds
   LLVM_RS_CC := $(HOST_OUT_EXECUTABLES)/llvm-rs-cc
@@ -650,7 +632,6 @@
 FAT16COPY := build/tools/fat16copy.py
 CHECK_LINK_TYPE := build/tools/check_link_type.py
 
-TURBINE := $(HOST_OUT_JAVA_LIBRARIES)/turbine$(COMMON_JAVA_PACKAGE_SUFFIX)
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py
 MERGETAGS := build/tools/merge-event-log-tags.py
@@ -722,7 +703,38 @@
 endif
 
 FRAMEWORK_MANIFEST_FILE := system/libhidl/manifest.xml
-FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.xml
+
+# Compatibility matrix versioning:
+# MATRIX_LEVEL_OVERRIDE defined: MATRIX_LEVEL = MATRIX_LEVEL_OVERRIDE
+# MATRIX_LEVEL_OVERRIDE undefined:
+#   FULL_TREBLE != true: MATRIX_LEVEL = legacy
+#   FULL_TREBLE == true:
+#     SHIPPING_API_LEVEL defined: MATRIX_LEVEL = SHIPPING_API_LEVEL
+#     SHIPPING_API_LEVEL undefined: MATRIX_LEVEL = PLATFORM_SDK_VERSION
+# MATRIX_LEVEL == legacy => legacy.xml
+# MATRIX_LEVEL <= 26 => 26.xml
+# MATRIX_LEVEL == 27 => 27.xml # define when 27 releases
+# MATRIX_LEVEL == 28 => 28.xml # define when 28 releases
+# ...
+# otherwise => current.xml
+
+ifneq ($(PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE),)
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := $(PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE)
+else ifneq ($(PRODUCT_FULL_TREBLE),true)
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := legacy
+else ifneq ($(PRODUCT_SHIPPING_API_LEVEL),)
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := $(PRODUCT_SHIPPING_API_LEVEL)
+else
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := $(PLATFORM_SDK_VERSION)
+endif
+
+ifeq ($(strip $(PRODUCT_COMPATIBILITY_MATRIX_LEVEL)),legacy)
+  FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.legacy.xml
+else ifeq ($(call math_gt_or_eq,$(PRODUCT_COMPATIBILITY_MATRIX_LEVEL),27),)
+  FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.26.xml
+else
+  FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.current.xml
+endif
 
 # ###############################################################
 # Set up final options.
@@ -804,6 +816,9 @@
 # We don't have prebuilt test_current SDK yet.
 TARGET_AVAILABLE_SDK_VERSIONS := test_current $(TARGET_AVAILABLE_SDK_VERSIONS)
 
+TARGET_SDK_VERSIONS_WITHOUT_JAVA_18_SUPPORT := $(call numbers_less_than,24,$(TARGET_AVAILABLE_SDK_VERSIONS))
+TARGET_SDK_VERSIONS_WITHOUT_JAVA_19_SUPPORT := $(call numbers_less_than,27,$(TARGET_AVAILABLE_SDK_VERSIONS))
+
 INTERNAL_PLATFORM_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/public_api.txt
 INTERNAL_PLATFORM_REMOVED_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/removed.txt
 INTERNAL_PLATFORM_SYSTEM_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-api.txt
diff --git a/core/config_sanitizers.mk b/core/config_sanitizers.mk
index e01fbbf..f5b45db 100644
--- a/core/config_sanitizers.mk
+++ b/core/config_sanitizers.mk
@@ -137,6 +137,8 @@
     else
         $(error $(LOCAL_PATH): $(LOCAL_MODULE): TSAN cannot be used for 32-bit modules.)
     endif
+  else
+    my_shared_libraries += $(TSAN_RUNTIME_LIBRARY)
   endif
 endif
 
diff --git a/core/definitions.mk b/core/definitions.mk
index 1f9891e..b988d1e 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2249,11 +2249,13 @@
 $(hide) mkdir -p $(dir $@)
 $(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR)
 $(hide) if [ -s $(PRIVATE_JAVA_SOURCE_LIST) ] ; then \
-    $(SOONG_JAVAC_WRAPPER) $(1) -encoding UTF-8 \
+    $(SOONG_JAVAC_WRAPPER) $(JAVAC_WRAPPER) $(1) -encoding UTF-8 \
     $(if $(findstring true,$(PRIVATE_WARNINGS_ENABLE)),$(xlint_unchecked),) \
-    $(addprefix -bootclasspath ,$(strip \
-        $(call normalize-path-list,$(PRIVATE_BOOTCLASSPATH)) \
-        $(PRIVATE_EMPTY_BOOTCLASSPATH))) \
+    $(if $(PRIVATE_USE_SYSTEM_MODULES), \
+      $(addprefix --system=,$(PRIVATE_SYSTEM_MODULES)), \
+      $(addprefix -bootclasspath ,$(strip \
+          $(call normalize-path-list,$(PRIVATE_BOOTCLASSPATH)) \
+          $(PRIVATE_EMPTY_BOOTCLASSPATH)))) \
     $(addprefix -classpath ,$(strip \
         $(call normalize-path-list,$(2)))) \
     $(if $(findstring true,$(PRIVATE_WARNINGS_ENABLE)),$(xlint_unchecked),) \
@@ -2300,6 +2302,7 @@
     $(3) \
     $(5) \
     $$(full_java_bootclasspath_libs) \
+    $$(full_java_system_modules_deps) \
     $$(layers_file) \
     $$(annotation_processor_deps) \
     $$(NORMALIZE_PATH) \
@@ -2382,7 +2385,6 @@
 endef
 
 # --add-opens is required because desugar reflects via java.lang.invoke.MethodHandles.Lookup
-# --desugar_try_with_resources_if_needed=false is needed due to b/63180735, b/63901645, b/63900665
 define desugar-classes-jar
 @echo Desugar: $@
 @mkdir -p $(dir $@)
@@ -2394,9 +2396,8 @@
     -Djdk.internal.lambda.dumpProxyClasses=$(abspath $(dir $@))/desugar_dumped_classes \
     -jar $(DESUGAR) \
     $(addprefix --bootclasspath_entry ,$(PRIVATE_BOOTCLASSPATH)) \
-    $(addprefix --classpath_entry ,$(PRIVATE_ALL_JAVA_HEADER_LIBRARIES)) \
-    --min_sdk_version $(call codename-or-sdk-to-sdk,$(PRIVATE_DEFAULT_APP_TARGET_SDK)) \
-    --desugar_try_with_resources_if_needed=false \
+    $(addprefix --classpath_entry ,$(PRIVATE_SHARED_JAVA_HEADER_LIBRARIES)) \
+    --min_sdk_version $(call codename-or-sdk-to-sdk,$(PRIVATE_MIN_SDK_VERSION)) \
     --allow_empty_bootclasspath \
     $(if $(filter --core-library,$(PRIVATE_DX_FLAGS)),--core_library) \
     -i $< -o $@.tmp
@@ -2677,7 +2678,7 @@
 define copy-file-to-target
 @mkdir -p $(dir $@)
 $(hide) rm -f $@
-$(hide) cp $< $@
+$(hide) cp "$<" "$@"
 endef
 
 # The same as copy-file-to-target, but use the local
@@ -2685,7 +2686,7 @@
 define copy-file-to-target-with-cp
 @mkdir -p $(dir $@)
 $(hide) rm -f $@
-$(hide) cp -p $< $@
+$(hide) cp -p "$<" "$@"
 endef
 
 # The same as copy-file-to-target, but strip out "# comment"-style
@@ -2785,6 +2786,19 @@
 endef
 
 ###########################################################
+## Commands to call R8
+###########################################################
+define transform-jar-to-dex-r8
+@echo R8: $@
+$(hide) $(R8) -injars '$<$(PRIVATE_PROGUARD_INJAR_FILTERS)' \
+    --min-api $(PRIVATE_MIN_SDK_VERSION) \
+    --force-proguard-compatibility --output $(subst classes.dex,,$@) \
+    $(PRIVATE_PROGUARD_FLAGS) \
+    $(addprefix -injars , $(PRIVATE_EXTRA_INPUT_JAR)) \
+    $(PRIVATE_DX_FLAGS)
+endef
+
+###########################################################
 ## Stuff source generated from one-off tools
 ###########################################################
 
@@ -2811,7 +2825,7 @@
   size=$$(for i in $(1); do $(call get-file-size,$$i); echo +; done; echo 0); \
   total=$$(( $$( echo "$$size" ) )); \
   printname=$$(echo -n "$(1)" | tr " " +); \
-  maxsize=$(2); \
+  maxsize=$$(($(2))); \
   if [ "$$total" -gt "$$maxsize" ]; then \
     echo "error: $$printname too large ($$total > $$maxsize)"; \
     false; \
diff --git a/core/dex_preopt_libart.mk b/core/dex_preopt_libart.mk
index 9616036..de34d88 100644
--- a/core/dex_preopt_libart.mk
+++ b/core/dex_preopt_libart.mk
@@ -11,10 +11,6 @@
 DEX2OAT := $(HOST_OUT_EXECUTABLES)/dex2oatd$(HOST_EXECUTABLE_SUFFIX)
 endif
 
-# Pass special class loader context to skip the classpath and collision check.
-# Should modify build system to pass used libraries properly later.
-DEX2OAT_CLASS_LOADER_CONTEXT := "&"
-
 DEX2OAT_DEPENDENCY += $(DEX2OAT)
 
 # Use the first preloaded-classes file in PRODUCT_COPY_FILES.
@@ -150,7 +146,7 @@
 $(hide) mkdir -p $(dir $(2))
 $(hide) ANDROID_LOG_TAGS="*:e" $(DEX2OAT) \
 	--runtime-arg -Xms$(DEX2OAT_XMS) --runtime-arg -Xmx$(DEX2OAT_XMX) \
-	--class-loader-context=$(DEX2OAT_CLASS_LOADER_CONTEXT) \
+	--class-loader-context=$(PRIVATE_DEX2OAT_CLASS_LOADER_CONTEXT) \
 	--boot-image=$(PRIVATE_DEX_PREOPT_IMAGE_LOCATION) \
 	--dex-file=$(1) \
 	--dex-location=$(PRIVATE_DEX_LOCATION) \
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index 8c1a606..f420b18 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -36,12 +36,16 @@
 # if WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY=true and module is not in boot class path skip
 # Also preopt system server jars since selinux prevents system server from loading anything from
 # /data. If we don't do this they will need to be extracted which is not favorable for RAM usage
-# or performance.
+# or performance. If my_preopt_for_extracted_apk is true, we ignore the only preopt boot image
+# options.
+ifneq (true,$(my_preopt_for_extracted_apk))
 ifeq (true,$(WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY))
 ifeq ($(filter $(PRODUCT_SYSTEM_SERVER_JARS) $(DEXPREOPT_BOOT_JARS_MODULES),$(LOCAL_MODULE)),)
 LOCAL_DEX_PREOPT :=
 endif
 endif
+endif
+
 # if installing into system, and odex are being installed into system_other, don't strip
 ifeq ($(BOARD_USES_SYSTEM_OTHER_ODEX),true)
 ifeq ($(LOCAL_DEX_PREOPT),true)
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 5372336..8749a32 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -343,6 +343,7 @@
 PRODUCT_OUT := $(TARGET_PRODUCT_OUT_ROOT)/$(TARGET_DEVICE)
 
 OUT_DOCS := $(TARGET_COMMON_OUT_ROOT)/docs
+OUT_NDK_DOCS := $(TARGET_COMMON_OUT_ROOT)/ndk-docs
 
 BUILD_OUT_EXECUTABLES := $(BUILD_OUT)/bin
 SOONG_HOST_OUT_EXECUTABLES := $(SOONG_HOST_OUT)/bin
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 96796df..a522f0b 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -28,10 +28,6 @@
 include $(BUILD_SYSTEM)/host_java_library_common.mk
 #######################################
 
-ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
-  LOCAL_JAVA_LIBRARIES :=  core-oj-hostdex core-libart-hostdex $(LOCAL_JAVA_LIBRARIES)
-endif
-
 full_classes_turbine_jar := $(intermediates.COMMON)/classes-turbine.jar
 full_classes_header_jarjar := $(intermediates.COMMON)/classes-header-jarjar.jar
 full_classes_header_jar := $(intermediates.COMMON)/classes-header.jar
@@ -93,6 +89,7 @@
     $(java_sources_deps) \
     $(full_java_header_libs) \
     $(full_java_bootclasspath_libs) \
+    $(full_java_system_modules_deps) \
     $(annotation_processor_deps) \
     $(NORMALIZE_PATH) \
     $(JAR_ARGS) \
diff --git a/core/host_java_library.mk b/core/host_java_library.mk
index c9499ea..9bead3f 100644
--- a/core/host_java_library.mk
+++ b/core/host_java_library.mk
@@ -122,6 +122,6 @@
 $(eval $(call copy-one-file,$(LOCAL_FULL_CLASSES_JACOCO_JAR),$(LOCAL_BUILT_MODULE)))
 $(eval $(call copy-one-file,$(LOCAL_FULL_CLASSES_JACOCO_JAR),$(full_classes_jar)))
 
-ifneq ($(TURBINE_DISABLED),false)
+ifeq ($(TURBINE_ENABLED),false)
 $(eval $(call copy-one-file,$(LOCAL_FULL_CLASSES_JACOCO_JAR),$(full_classes_header_jar)))
 endif
diff --git a/core/jacoco.mk b/core/jacoco.mk
index 8915443..33d45d5 100644
--- a/core/jacoco.mk
+++ b/core/jacoco.mk
@@ -39,21 +39,16 @@
     my_include_args :=
   endif
 
-  # replace '.' with '/' and ',' with ' ', and quote each arg
+  # replace '.' with '/' and ',' with ' '
   ifneq ($(strip $(my_exclude_filter)),)
     my_exclude_args := $(my_exclude_filter)
 
     my_exclude_args := $(subst .,/,$(my_exclude_args))
     my_exclude_args := $(subst $(comma)$(comma),$(comma),$(my_exclude_args))
-    my_exclude_args := '$(subst $(comma),' ', $(my_exclude_args))'
+    my_exclude_args := $(subst $(comma), ,$(my_exclude_args))
   else
     my_exclude_args :=
   endif
-endif # LOCAL_EMMA_INSTRUMENT == true
-
-# determine whether to run the instrumenter based on whether there is any work
-# for it to do
-ifneq ($(my_include_filter),)
 
   my_files := $(intermediates.COMMON)/jacoco
 
@@ -72,7 +67,8 @@
 	unzip -q $(PRIVATE_FULL_CLASSES_PRE_JACOCO_JAR) \
 	  -d $(PRIVATE_UNZIPPED_PATH) \
 	  $(PRIVATE_INCLUDE_ARGS)
-	rm -rf $(PRIVATE_EXCLUDE_ARGS)
+	(cd $(PRIVATE_UNZIPPED_PATH) && rm -rf $(PRIVATE_EXCLUDE_ARGS))
+	(cd $(PRIVATE_UNZIPPED_PATH) && find -not -name "*.class" -type f | xargs --no-run-if-empty rm)
 	touch $(PRIVATE_UNZIPPED_TIMESTAMP_PATH)
 # Unfortunately in the previous task above,
 # 'rm -rf $(PRIVATE_EXCLUDE_ARGS)' needs to be a separate
@@ -132,8 +128,8 @@
   # dependency.
 $(LOCAL_FULL_CLASSES_JACOCO_JAR): $(my_classes_to_report_on_path)
 
-else # my_include_filter == ''
+else # LOCAL_EMMA_INSTRUMENT != true
   LOCAL_FULL_CLASSES_JACOCO_JAR := $(LOCAL_FULL_CLASSES_PRE_JACOCO_JAR)
-endif # my_include_filter != ''
+endif # LOCAL_EMMA_INSTRUMENT == true
 
 LOCAL_INTERMEDIATE_TARGETS += $(LOCAL_FULL_CLASSES_JACOCO_JAR)
diff --git a/core/java.mk b/core/java.mk
index cf49994..5a13867 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -18,25 +18,6 @@
 LOCAL_NO_STANDARD_LIBRARIES:=$(strip $(LOCAL_NO_STANDARD_LIBRARIES))
 LOCAL_SDK_VERSION:=$(strip $(LOCAL_SDK_VERSION))
 
-ifneq ($(LOCAL_MODULE),jacocoagent)
-  ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
-    ifeq ($(EMMA_INSTRUMENT),true)
-      ifneq ($(EMMA_INSTRUMENT_STATIC),true)
-        # For instrumented build, if Jacoco is not being included statically
-        # in instrumented packages then include Jacoco classes into the
-        # bootclasspath.
-        LOCAL_JAVA_LIBRARIES := jacocoagent $(LOCAL_JAVA_LIBRARIES)
-      endif # EMMA_INSTRUMENT_STATIC
-    endif # EMMA_INSTRUMENT
-  endif # !LOCAL_NO_STANDARD_LIBRARIES
-endif # LOCAL_MODULE == jacocoagent
-
-ifndef LOCAL_SDK_VERSION
-  ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
-    LOCAL_JAVA_LIBRARIES := $(TARGET_DEFAULT_JAVA_LIBRARIES) $(LOCAL_JAVA_LIBRARIES)
-  endif
-endif
-
 proto_sources := $(filter %.proto,$(LOCAL_SRC_FILES))
 ifneq ($(proto_sources),)
 ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),micro)
@@ -499,6 +480,7 @@
     $(java_sources_deps) \
     $(full_java_header_libs) \
     $(full_java_bootclasspath_libs) \
+    $(full_java_system_modules_deps) \
     $(NORMALIZE_PATH) \
     $(JAR_ARGS) \
     $(ZIPTIME) \
@@ -604,33 +586,33 @@
 endif
 proguard_dictionary := $(intermediates.COMMON)/proguard_dictionary
 
-# Hack: see b/20667396
-# When an app's LOCAL_SDK_VERSION is lower than the support library's LOCAL_SDK_VERSION,
-# we artifically raises the "SDK version" "linked" by ProGuard, to
+# When an app contains references to APIs that are not in the SDK specified by
+# its LOCAL_SDK_VERSION for example added by support library or by runtime 
+# classes added by desugar, we artifically raise the "SDK version" "linked" by
+# ProGuard, to
 # - suppress ProGuard warnings of referencing symbols unknown to the lower SDK version.
 # - prevent ProGuard stripping subclass in the support library that extends class added in the higher SDK version.
-my_support_library_sdk_raise :=
-ifneq (,$(filter android-support-%,$(LOCAL_STATIC_JAVA_LIBRARIES)))
+# See b/20667396
+my_proguard_sdk_raise :=
 ifdef LOCAL_SDK_VERSION
 ifdef TARGET_BUILD_APPS
 ifeq (,$(filter current system_current test_current, $(LOCAL_SDK_VERSION)))
-  my_support_library_sdk_raise := $(call java-lib-header-files, sdk_vcurrent)
+  my_proguard_sdk_raise := $(call java-lib-header-files, sdk_vcurrent)
 endif
 else
   # For platform build, we can't just raise to the "current" SDK,
   # that would break apps that use APIs removed from the current SDK.
-  my_support_library_sdk_raise := $(call java-lib-header-files,$(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES) $(TARGET_DEFAULT_JAVA_LIBRARIES))
-endif
+  my_proguard_sdk_raise := $(call java-lib-header-files,$(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES) $(TARGET_DEFAULT_JAVA_LIBRARIES))
 endif
 endif
 
-legacy_proguard_flags := $(addprefix -libraryjars ,$(my_support_library_sdk_raise) \
-  $(filter-out $(my_support_library_sdk_raise), \
+legacy_proguard_flags := $(addprefix -libraryjars ,$(my_proguard_sdk_raise) \
+  $(filter-out $(my_proguard_sdk_raise), \
     $(full_java_bootclasspath_libs) \
     $(full_shared_java_header_libs)))
 
-legacy_proguard_lib_deps := $(my_support_library_sdk_raise) \
-  $(filter-out $(my_support_library_sdk_raise),$(full_shared_java_header_libs))
+legacy_proguard_lib_deps := $(my_proguard_sdk_raise) \
+  $(filter-out $(my_proguard_sdk_raise),$(full_shared_java_header_libs))
 
 legacy_proguard_flags += -printmapping $(proguard_dictionary)
 
@@ -693,6 +675,9 @@
 endif  # LOCAL_PROGUARD_ENABLED is not nosystem
 
 proguard_flag_files := $(addprefix $(LOCAL_PATH)/, $(LOCAL_PROGUARD_FLAG_FILES))
+ifeq ($(USE_R8),true)
+proguard_flag_files += $(addprefix $(LOCAL_PATH)/, $(LOCAL_R8_FLAG_FILES))
+endif # USE_R8
 LOCAL_PROGUARD_FLAGS += $(addprefix -include , $(proguard_flag_files))
 
 ifdef LOCAL_TEST_MODULE_TO_PROGUARD_WITH
@@ -715,13 +700,26 @@
 endif
 
 ifneq ($(filter obfuscation,$(LOCAL_PROGUARD_ENABLED)),)
+ifneq ($(USE_R8),true)
   $(full_classes_proguard_jar): .KATI_IMPLICIT_OUTPUTS := $(proguard_dictionary)
+else
+  $(built_dex_intermediate): .KATI_IMPLICIT_OUTPUTS := $(proguard_dictionary)
 endif
+endif
+
+# If R8 is not enabled run Proguard.
+ifneq ($(USE_R8),true)
+# Changes to these dependencies need to be replicated below when using R8
+# instead of Proguard + dx.
 $(full_classes_proguard_jar): PRIVATE_PROGUARD_INJAR_FILTERS := $(proguard_injar_filters)
 $(full_classes_proguard_jar): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
 $(full_classes_proguard_jar): PRIVATE_PROGUARD_FLAGS := $(legacy_proguard_flags) $(common_proguard_flags) $(LOCAL_PROGUARD_FLAGS)
-$(full_classes_proguard_jar) : $(full_classes_pre_proguard_jar) $(extra_input_jar) $(my_support_library_sdk_raise) $(common_proguard_flag_files) $(proguard_flag_files) $(legacy_proguard_lib_deps) | $(PROGUARD)
+$(full_classes_proguard_jar) : $(full_classes_pre_proguard_jar) $(extra_input_jar) $(my_proguard_sdk_raise) $(common_proguard_flag_files) $(proguard_flag_files) $(legacy_proguard_lib_deps) | $(PROGUARD)
 	$(call transform-jar-to-proguard)
+else # !USE_R8
+# Running R8 instead of Proguard, proguarded jar is actually the pre-Proguarded jar.
+full_classes_proguard_jar := $(full_classes_pre_proguard_jar)
+endif # !USE_R8
 
 else  # LOCAL_PROGUARD_ENABLED not defined
 full_classes_proguard_jar := $(full_classes_pre_proguard_jar)
@@ -738,8 +736,26 @@
 ifeq ($(LOCAL_EMMA_INSTRUMENT),true)
 $(built_dex_intermediate): PRIVATE_DX_FLAGS += --no-locals
 endif
+
+my_r8 :=
+ifdef LOCAL_PROGUARD_ENABLED
+ifeq ($(USE_R8),true)
+# These are the dependencies for the proguarded jar when running
+# Proguard + dx. They are used for the generated dex when using R8, as
+# R8 does Proguard + dx
+my_r8 := true
+$(built_dex_intermediate): PRIVATE_PROGUARD_INJAR_FILTERS := $(proguard_injar_filters)
+$(built_dex_intermediate): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
+$(built_dex_intermediate): PRIVATE_PROGUARD_FLAGS := $(legacy_proguard_flags) $(common_proguard_flags) $(LOCAL_PROGUARD_FLAGS)
+$(built_dex_intermediate) : $(full_classes_proguard_jar) $(extra_input_jar) $(my_support_library_sdk_raise) $(common_proguard_flag_files) $(proguard_flag_files) $(legacy_proguard_lib_deps) $(R8)
+	$(transform-jar-to-dex-r8)
+endif # USE_R8
+endif # LOCAL_PROGUARD_ENABLED
+
+ifndef my_r8
 $(built_dex_intermediate): $(full_classes_proguard_jar) $(DX)
 	$(transform-classes.jar-to-dex)
+endif
 
 $(built_dex): $(built_dex_intermediate)
 	@echo Copying: $@
diff --git a/core/java_common.mk b/core/java_common.mk
index 320c52f..15f7c1b 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -15,20 +15,17 @@
 # Modules can override this logic by specifying
 # LOCAL_JAVA_LANGUAGE_VERSION explicitly.
 ifeq (,$(LOCAL_JAVA_LANGUAGE_VERSION))
-  private_sdk_versions_without_any_java_18_support := 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
-  ifneq (,$(filter $(LOCAL_SDK_VERSION), $(private_sdk_versions_without_any_java_18_support)))
+  ifneq (,$(filter $(LOCAL_SDK_VERSION), $(TARGET_SDK_VERSIONS_WITHOUT_JAVA_18_SUPPORT)))
     LOCAL_JAVA_LANGUAGE_VERSION := 1.7
+  else ifneq (,$(filter $(LOCAL_SDK_VERSION), $(TARGET_SDK_VERSIONS_WITHOUT_JAVA_19_SUPPORT)))
+    LOCAL_JAVA_LANGUAGE_VERSION := 1.8
+  else ifneq (,$(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS))
+    # TODO(ccross): allow 1.9 for current and unbundled once we have SDK system modules
+    LOCAL_JAVA_LANGUAGE_VERSION := 1.8
   else
-    ifneq ($(EXPERIMENTAL_USE_OPENJDK9),true)
-      LOCAL_JAVA_LANGUAGE_VERSION := 1.8
-    else
-      private_sdk_versions_without_any_java_19_support := 24 25 26
-      ifneq (,$(filter $(LOCAL_SDK_VERSION), $(private_sdk_versions_without_any_java_19_support)))
-        LOCAL_JAVA_LANGUAGE_VERSION := 1.8
-      else
-        LOCAL_JAVA_LANGUAGE_VERSION := 1.9
-      endif
-    endif
+    # DEFAULT_JAVA_LANGUAGE_VERSION is 1.8 unless EXPERIMENTAL_USE_OPENJDK9=true
+    # in which case it is 1.9
+    LOCAL_JAVA_LANGUAGE_VERSION := $(DEFAULT_JAVA_LANGUAGE_VERSION)
   endif
 endif
 LOCAL_JAVACFLAGS += -source $(LOCAL_JAVA_LANGUAGE_VERSION) -target $(LOCAL_JAVA_LANGUAGE_VERSION)
@@ -201,16 +198,31 @@
 
 full_java_bootclasspath_libs :=
 empty_bootclasspath :=
+my_system_modules :=
 
-# full_java_libs: The list of files that should be used as the classpath.
-#                 Using this list as a dependency list WILL NOT WORK.
 ifndef LOCAL_IS_HOST_MODULE
   ifeq ($(LOCAL_SDK_VERSION),)
     ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
       # No bootclasspath. But we still need "" to prevent javac from using default host bootclasspath.
       empty_bootclasspath := ""
+      # Most users of LOCAL_NO_STANDARD_LIBRARIES really mean no framework libs,
+      # and manually add back the core libs.  The ones that don't are in soong
+      # now, so just always assume that they want the default system modules
+      my_system_modules := $(DEFAULT_SYSTEM_MODULES)
     else  # LOCAL_NO_STANDARD_LIBRARIES
-      full_java_bootclasspath_libs := $(call java-lib-header-files,$(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES))
+      full_java_bootclasspath_libs := $(call java-lib-header-files,$(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES) $(TARGET_DEFAULT_JAVA_LIBRARIES))
+      LOCAL_JAVA_LIBRARIES := $(filter-out $(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES) $(TARGET_DEFAULT_JAVA_LIBRARIES),$(LOCAL_JAVA_LIBRARIES))
+      my_system_modules := $(DEFAULT_SYSTEM_MODULES)
+      ifneq ($(LOCAL_MODULE),jacocoagent)
+        ifeq ($(EMMA_INSTRUMENT),true)
+          ifneq ($(EMMA_INSTRUMENT_STATIC),true)
+            # For instrumented build, if Jacoco is not being included statically
+            # in instrumented packages then include Jacoco classes into the
+            # bootclasspath.
+            full_java_bootclasspath_libs += $(call java-lib-header-files,jacocoagent)
+          endif # EMMA_INSTRUMENT_STATIC
+        endif # EMMA_INSTRUMENT
+      endif # LOCAL_MODULE == jacocoagent
     endif  # LOCAL_NO_STANDARD_LIBRARIES
   else
     ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
@@ -255,12 +267,14 @@
       full_java_bootclasspath_libs := $(call java-lib-header-files,$(addsuffix -hostdex,$(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES)),true)
     endif
 
+    my_system_modules := $(DEFAULT_SYSTEM_MODULES)
     full_shared_java_libs := $(call java-lib-files,$(LOCAL_JAVA_LIBRARIES),true)
     full_shared_java_header_libs := $(call java-lib-header-files,$(LOCAL_JAVA_LIBRARIES),true)
   else # !USE_CORE_LIB_BOOTCLASSPATH
 
     full_shared_java_libs := $(addprefix $(HOST_OUT_JAVA_LIBRARIES)/,\
       $(addsuffix $(COMMON_JAVA_PACKAGE_SUFFIX),$(LOCAL_JAVA_LIBRARIES)))
+    full_shared_java_header_libs := $(full_shared_java_libs)
   endif # USE_CORE_LIB_BOOTCLASSPATH
 endif # !LOCAL_IS_HOST_MODULE
 
@@ -270,11 +284,25 @@
   endif
 endif
 
+full_java_system_modules_deps :=
+my_system_modules_dir :=
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_USE_SYSTEM_MODULES :=
+ifeq ($(LOCAL_JAVA_LANGUAGE_VERSION),1.9)
+  $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_USE_SYSTEM_MODULES := true
+  ifdef my_system_modules
+    ifneq ($(my_system_modules),none)
+      ifndef SOONG_SYSTEM_MODULES_$(my_system_modules)
+        $(call pretty-error, Invalid system modules $(my_system_modules))
+      endif
+      full_java_system_modules_deps := $(SOONG_SYSTEM_MODULES_$(my_system_modules))
+      my_system_modules_dir := $(patsubst %/lib/modules,%,$(SOONG_SYSTEM_MODULES_$(my_system_modules)))
+    endif
+  endif
+endif
+
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH := $(full_java_bootclasspath_libs)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_EMPTY_BOOTCLASSPATH := $(empty_bootclasspath)
-
-full_java_libs := $(full_shared_java_libs) $(full_static_java_libs) $(LOCAL_CLASSPATH)
-full_java_header_libs := $(full_shared_java_header_libs) $(full_static_java_header_libs)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_SYSTEM_MODULES := $(my_system_modules_dir)
 
 ifndef LOCAL_IS_HOST_MODULE
 # This is set by packages that are linking to other packages that export
@@ -286,8 +314,7 @@
 
   # link against the jar with full original names (before proguard processing).
   full_shared_java_libs += $(link_apk_libraries)
-  full_java_libs += $(link_apk_libraries)
-  full_java_header_libs += $(link_apk_header_libs)
+  full_shared_java_header_libs += $(link_apk_header_libs)
 endif
 
 # This is set by packages that contain instrumentation, allowing them to
@@ -309,8 +336,8 @@
   else
     link_instr_classes_header_jar := $(link_instr_intermediates_dir.COMMON)/classes.jar
   endif
-  full_java_libs += $(link_instr_classes_jar)
-  full_java_header_libs += $(link_instr_classes_header_jar)
+  full_shared_java_libs += $(link_instr_classes_jar)
+  full_shared_java_header_libs += $(link_instr_classes_header_jar)
 endif  # LOCAL_INSTRUMENTATION_FOR
 endif  # LOCAL_IS_HOST_MODULE
 
@@ -357,8 +384,12 @@
 endif
 endif  # !LOCAL_IS_HOST_MODULE
 
+full_java_libs := $(full_shared_java_libs) $(full_static_java_libs) $(LOCAL_CLASSPATH)
+full_java_header_libs := $(full_shared_java_header_libs) $(full_static_java_header_libs)
+
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_ALL_JAVA_LIBRARIES := $(full_java_libs)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_ALL_JAVA_HEADER_LIBRARIES := $(full_java_header_libs)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_SHARED_JAVA_HEADER_LIBRARIES := $(full_shared_java_header_libs)
 
 ALL_MODULES.$(my_register_name).INTERMEDIATE_SOURCE_DIR := \
     $(ALL_MODULES.$(my_register_name).INTERMEDIATE_SOURCE_DIR) $(LOCAL_INTERMEDIATE_SOURCE_DIR)
diff --git a/core/main.mk b/core/main.mk
index 8ace91d..2ebe8cb 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -34,7 +34,7 @@
 TOP := .
 TOPDIR :=
 
-BUILD_SYSTEM := $(TOPDIR)build/core
+BUILD_SYSTEM := $(TOPDIR)build/make/core
 
 # This is the default target.  It must be the first declared target.
 .PHONY: droid
@@ -173,15 +173,20 @@
 
 # -----------------------------------------------------------------
 # The pdk (Platform Development Kit) build
-include build/core/pdk_config.mk
+include build/make/core/pdk_config.mk
 
 #
 # -----------------------------------------------------------------
-# Enable dynamic linker developer warnings for all builds except
-# final release.
+# Enable dynamic linker developer warnings for userdebug, eng
+# and non-REL builds
+ifneq ($(TARGET_BUILD_VARIANT),user)
+  ADDITIONAL_BUILD_PROPERTIES += ro.bionic.ld.warning=1
+else
+# Enable it for user builds as long as they are not final.
 ifneq ($(PLATFORM_VERSION_CODENAME),REL)
   ADDITIONAL_BUILD_PROPERTIES += ro.bionic.ld.warning=1
 endif
+endif
 
 ADDITIONAL_BUILD_PROPERTIES += ro.treble.enabled=${PRODUCT_FULL_TREBLE}
 
@@ -936,7 +941,7 @@
       $(warning $(ALL_MODULES.$(m).MAKEFILE): Module '$(m)' in PRODUCT_PACKAGES_TESTS has nothing to install!)))
 endif
 
-# build/core/Makefile contains extra stuff that we don't want to pollute this
+# build/make/core/Makefile contains extra stuff that we don't want to pollute this
 # top-level makefile with.  It expects that ALL_DEFAULT_INSTALLED_MODULES
 # contains everything that's built during the current make, but it also further
 # extends ALL_DEFAULT_INSTALLED_MODULES.
diff --git a/core/math.mk b/core/math.mk
index 57cb681..44e03ce 100644
--- a/core/math.mk
+++ b/core/math.mk
@@ -72,6 +72,10 @@
 $(if $(filter $(1),$(call math_max,$(1),$(2))),true)
 endef
 
+define math_lt
+$(if $(call math_gt_or_eq,$(1),$(2)),,true)
+endef
+
 #$(warning $(call math_gt_or_eq, 2, 1))
 #$(warning $(call math_gt_or_eq, 1, 1))
 #$(warning $(if $(call math_gt_or_eq, 1, 2),false,true))
@@ -81,6 +85,15 @@
 $(strip $(eval $(1) := $($(1)) .)$(words $($(1))))
 endef
 
+# Returns the words in $2 that are numbers and are less than $1
+define numbers_less_than
+$(strip \
+  $(foreach n,$2, \
+    $(if $(call math_is_number,$(n)), \
+      $(if $(call math_lt,$(n),$(1)), \
+        $(n)))))
+endef
+
 _INT_LIMIT_WORDS := $(foreach a,x x,$(foreach b,x x x x x x x x x x x x x x x x,\
   $(foreach c,x x x x x x x x x x x x x x x x,x x x x x x x x x x x x x x x x)))
 
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index b79e68b..ba10b37 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -269,6 +269,11 @@
 my_prebuilt_src_file := $(my_extracted_apk)
 my_extracted_apk :=
 my_extract_apk :=
+ifeq ($(PRODUCT_ALWAYS_PREOPT_EXTRACTED_APK),true)
+# If the product property is set, always preopt for extracted modules to prevent executing out of
+# the APK.
+my_preopt_for_extracted_apk := true
+endif
 endif
 
 rs_compatibility_jni_libs :=
@@ -602,3 +607,4 @@
 $(built_module) : $(LOCAL_ADDITIONAL_DEPENDENCIES)
 
 my_prebuilt_src_file :=
+my_preopt_for_extracted_apk :=
diff --git a/core/product-graph.mk b/core/product-graph.mk
index 36e9037..633ac37 100644
--- a/core/product-graph.mk
+++ b/core/product-graph.mk
@@ -34,7 +34,7 @@
 endef
 
 
-this_makefile := build/core/product-graph.mk
+this_makefile := build/make/core/product-graph.mk
 
 products_svg := $(OUT_DIR)/products.svg
 products_pdf := $(OUT_DIR)/products.pdf
diff --git a/core/product.mk b/core/product.mk
index c955ccc..4682dac 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -115,6 +115,7 @@
     PRODUCT_SYSTEM_PROPERTY_BLACKLIST \
     PRODUCT_SYSTEM_SERVER_APPS \
     PRODUCT_SYSTEM_SERVER_JARS \
+    PRODUCT_ALWAYS_PREOPT_EXTRACTED_APK \
     PRODUCT_DEXPREOPT_SPEED_APPS \
     PRODUCT_VBOOT_SIGNING_KEY \
     PRODUCT_VBOOT_SIGNING_SUBKEY \
diff --git a/core/product_config.mk b/core/product_config.mk
index 492219b..04f02da 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -260,6 +260,9 @@
 PRODUCT_SYSTEM_SERVER_APPS := $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SYSTEM_SERVER_APPS))
 PRODUCT_DEXPREOPT_SPEED_APPS := $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_DEXPREOPT_SPEED_APPS))
 
+# All of the apps that we force preopt, this overrides WITH_DEXPREOPT.
+PRODUCT_ALWAYS_PREOPT_EXTRACTED_APK := $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_ALWAYS_PREOPT_EXTRACTED_APK))
+
 # Find the device that this product maps to.
 TARGET_DEVICE := $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_DEVICE)
 
@@ -336,7 +339,7 @@
 # The file at the source path should be copied to the destination path
 # when building  this product.  <destination path> is relative to
 # $(PRODUCT_OUT), so it should look like, e.g., "system/etc/file.xml".
-# The rules for these copy steps are defined in build/core/Makefile.
+# The rules for these copy steps are defined in build/make/core/Makefile.
 # The optional :<owner> is used to indicate the owner of a vendor file.
 PRODUCT_COPY_FILES := \
     $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_COPY_FILES))
diff --git a/core/root.mk b/core/root.mk
index 6c8f795..1ef9aca 100644
--- a/core/root.mk
+++ b/core/root.mk
@@ -1,3 +1,3 @@
 ### DO NOT EDIT THIS FILE ###
-include build/core/main.mk
+include build/make/core/main.mk
 ### DO NOT EDIT THIS FILE ###
diff --git a/core/sdk_font.mk b/core/sdk_font.mk
index c10f19f..0259a9c 100644
--- a/core/sdk_font.mk
+++ b/core/sdk_font.mk
@@ -8,7 +8,7 @@
 
 
 # The script that renames the font.
-sdk_font_rename_script := frameworks/base/tools/layoutlib/rename_font/build_font_single.py
+sdk_font_rename_script := frameworks/layoutlib/rename_font/build_font_single.py
 
 # Location of the fonttools library that the above script depends on.
 fonttools_lib := external/fonttools/Lib
diff --git a/core/setup_one_odex.mk b/core/setup_one_odex.mk
index f0ffe81..e0d9926 100644
--- a/core/setup_one_odex.mk
+++ b/core/setup_one_odex.mk
@@ -32,6 +32,10 @@
     $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS) \
     $(my_dex_preopt_image_filename)
 
+# Pass special class loader context to skip the classpath and collision check.
+# Should modify build system to pass used libraries properly later.
+$(my_built_odex): PRIVATE_DEX2OAT_CLASS_LOADER_CONTEXT := \&
+
 my_installed_odex := $(call get-odex-installed-file-path,$($(my_2nd_arch_prefix)DEX2OAT_TARGET_ARCH),$(LOCAL_INSTALLED_MODULE))
 
 my_built_vdex := $(patsubst %.odex,%.vdex,$(my_built_odex))
diff --git a/core/soong_config.mk b/core/soong_config.mk
index ae0a0b2..e774fc8 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -13,6 +13,7 @@
 endif
 endif
 
+ifeq ($(WRITE_SOONG_VARIABLES),true)
 # Converts a list to a JSON list.
 # $1: List separator.
 # $2: List.
@@ -24,77 +25,105 @@
 # Converts a comma-separated list to a JSON list.
 csv_to_json_list = $(call _json_list,$(comma),$(1))
 
+# 1: Key name
+# 2: Value
+add_json_val = $(eval _contents := $$(_contents)    "$$(strip $$(1))":$$(space)$$(strip $$(2))$$(comma)$$(newline))
+add_json_str = $(call add_json_val,$(1),"$(strip $(2))")
+add_json_list = $(call add_json_val,$(1),$(call json_list,$(patsubst %,%,$(2))))
+add_json_csv = $(call add_json_val,$(1),$(call csv_to_json_list,$(strip $(2))))
+add_json_bool = $(call add_json_val,$(1),$(if $(strip $(2)),true,false))
+
+invert_bool = $(if $(strip $(1)),,true)
+
 # Create soong.variables with copies of makefile settings.  Runs every build,
 # but only updates soong.variables if it changes
-SOONG_VARIABLES_TMP := $(SOONG_VARIABLES).$$$$
-$(SOONG_VARIABLES): FORCE
-	$(hide) mkdir -p $(dir $@)
-	$(hide) (\
-	echo '{'; \
-	echo '    "Make_suffix": "-$(TARGET_PRODUCT)",'; \
-	echo ''; \
-	echo '    "Platform_sdk_version": $(PLATFORM_SDK_VERSION),'; \
-	echo '    "Platform_version_active_codenames": $(call csv_to_json_list,$(PLATFORM_VERSION_ALL_CODENAMES)),'; \
-	echo '    "Platform_version_future_codenames": $(call csv_to_json_list,$(PLATFORM_VERSION_FUTURE_CODENAMES)),'; \
-	echo '    "Unbundled_build": $(if $(TARGET_BUILD_APPS),true,false),'; \
-	echo '    "Brillo": $(if $(BRILLO),true,false),'; \
-	echo '    "Malloc_not_svelte": $(if $(filter true,$(MALLOC_SVELTE)),false,true),'; \
-	echo '    "Allow_missing_dependencies": $(if $(ALLOW_MISSING_DEPENDENCIES),true,false),'; \
-	echo '    "SanitizeHost": $(call json_list,$(SANITIZE_HOST)),'; \
-	echo '    "SanitizeDevice": $(call json_list,$(SANITIZE_TARGET)),'; \
-	echo '    "SanitizeDeviceDiag": $(call json_list,$(SANITIZE_TARGET_DIAG)),'; \
-	echo '    "SanitizeDeviceArch": $(call json_list,$(SANITIZE_TARGET_ARCH)),'; \
-	echo '    "HostStaticBinaries": $(if $(strip $(BUILD_HOST_static)),true,false),'; \
-	echo '    "Binder32bit": $(if $(BINDER32BIT),true,false),'; \
-	echo '    "DevicePrefer32BitExecutables": $(if $(filter true,$(TARGET_PREFER_32_BIT_EXECUTABLES)),true,false),'; \
-	echo '    "UseGoma": $(if $(filter-out false,$(USE_GOMA)),true,false),'; \
-	echo '    "Debuggable": $(if $(filter userdebug eng,$(TARGET_BUILD_VARIANT)),true,false),'; \
-	echo '    "Eng": $(if $(filter eng,$(TARGET_BUILD_VARIANT)),true,false),'; \
-	echo '    "VendorPath": "$(TARGET_COPY_OUT_VENDOR)",'; \
-	echo ''; \
-	echo '    "ClangTidy": $(if $(filter 1 true,$(WITH_TIDY)),true,false),'; \
-	echo '    "TidyChecks": "$(WITH_TIDY_CHECKS)",'; \
-	echo ''; \
-	echo '    "NativeCoverage": $(if $(filter true,$(NATIVE_COVERAGE)),true,false),'; \
-	echo '    "CoveragePaths": $(call csv_to_json_list,$(COVERAGE_PATHS)),'; \
-	echo '    "CoverageExcludePaths": $(call csv_to_json_list,$(COVERAGE_EXCLUDE_PATHS)),'; \
-	echo ''; \
-	echo '    "DeviceName": "$(TARGET_DEVICE)",'; \
-	echo '    "DeviceArch": "$(TARGET_ARCH)",'; \
-	echo '    "DeviceArchVariant": "$(TARGET_ARCH_VARIANT)",'; \
-	echo '    "DeviceCpuVariant": "$(TARGET_CPU_VARIANT)",'; \
-	echo '    "DeviceAbi": ["$(TARGET_CPU_ABI)", "$(TARGET_CPU_ABI2)"],'; \
-	echo '    "DeviceUsesClang": $(if $(USE_CLANG_PLATFORM_BUILD),$(USE_CLANG_PLATFORM_BUILD),false),'; \
-	echo '    "DeviceVndkVersion": "$(BOARD_VNDK_VERSION)",'; \
-	echo ''; \
-	echo '    "DeviceSecondaryArch": "$(TARGET_2ND_ARCH)",'; \
-	echo '    "DeviceSecondaryArchVariant": "$(TARGET_2ND_ARCH_VARIANT)",'; \
-	echo '    "DeviceSecondaryCpuVariant": "$(TARGET_2ND_CPU_VARIANT)",'; \
-	echo '    "DeviceSecondaryAbi": ["$(TARGET_2ND_CPU_ABI)", "$(TARGET_2ND_CPU_ABI2)"],'; \
-	echo ''; \
-	echo '    "HostArch": "$(HOST_ARCH)",'; \
-	echo '    "HostSecondaryArch": "$(HOST_2ND_ARCH)",'; \
-	echo ''; \
-	echo '    "CrossHost": "$(HOST_CROSS_OS)",'; \
-	echo '    "CrossHostArch": "$(HOST_CROSS_ARCH)",'; \
-	echo '    "CrossHostSecondaryArch": "$(HOST_CROSS_2ND_ARCH)",'; \
-	echo '    "Safestack": $(if $(filter true,$(USE_SAFESTACK)),true,false),'; \
-	echo '    "EnableCFI": $(if $(filter false,$(ENABLE_CFI)),false,true),'; \
-	echo '    "IntegerOverflowExcludePaths": $(call json_list,$(INTEGER_OVERFLOW_EXCLUDE_PATHS) $(PRODUCT_INTEGER_OVERFLOW_EXCLUDE_PATHS)),'; \
-	echo '    "Device_uses_hwc2": $(if $(filter true,$(TARGET_USES_HWC2)),true,false),'; \
-	echo '    "Override_rs_driver": "$(OVERRIDE_RS_DRIVER)",'; \
-	echo '    "Treble": $(if $(filter true,$(PRODUCT_FULL_TREBLE)),true,false),'; \
-	echo '    "Pdk": $(if $(filter true,$(TARGET_BUILD_PDK)),true,false),'; \
-	echo '    "Uml": $(if $(filter true,$(TARGET_USER_MODE_LINUX)),true,false),'; \
-	echo ''; \
-	echo '    "ArtUseReadBarrier": $(if $(filter false,$(PRODUCT_ART_USE_READ_BARRIER)),false,true),'; \
-	echo ''; \
-	echo '    "BtConfigIncludeDir": "$(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR)",'; \
-	echo ''; \
-	echo '    "DeviceKernelHeaders": $(call json_list,$(strip $(TARGET_PROJECT_SYSTEM_INCLUDES)))'; \
-	echo '}') > $(SOONG_VARIABLES_TMP); \
-	if ! cmp -s $(SOONG_VARIABLES_TMP) $(SOONG_VARIABLES); then \
-	  mv $(SOONG_VARIABLES_TMP) $(SOONG_VARIABLES); \
+$(shell mkdir -p $(dir $(SOONG_VARIABLES)))
+_contents := {$(newline)
+
+$(call add_json_str,  Make_suffix, -$(TARGET_PRODUCT))
+
+$(call add_json_val,  Platform_sdk_version,              $(PLATFORM_SDK_VERSION))
+$(call add_json_csv,  Platform_version_active_codenames, $(PLATFORM_VERSION_ALL_CODENAMES))
+$(call add_json_csv,  Platform_version_future_codenames, $(PLATFORM_VERSION_FUTURE_CODENAMES))
+
+$(call add_json_bool, Allow_missing_dependencies,        $(ALLOW_MISSING_DEPENDENCIES))
+$(call add_json_bool, Unbundled_build,                   $(TARGET_BUILD_APPS))
+$(call add_json_bool, Pdk,                               $(filter true,$(TARGET_BUILD_PDK)))
+
+$(call add_json_bool, Debuggable,                        $(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
+$(call add_json_bool, Eng,                               $(filter eng,$(TARGET_BUILD_VARIANT)))
+
+$(call add_json_str,  DeviceName,                        $(TARGET_DEVICE))
+$(call add_json_str,  DeviceArch,                        $(TARGET_ARCH))
+$(call add_json_str,  DeviceArchVariant,                 $(TARGET_ARCH_VARIANT))
+$(call add_json_str,  DeviceCpuVariant,                  $(TARGET_CPU_VARIANT))
+$(call add_json_list, DeviceAbi,                         $(TARGET_CPU_ABI) $(TARGET_CPU_ABI2))
+
+$(call add_json_str,  DeviceSecondaryArch,               $(TARGET_2ND_ARCH))
+$(call add_json_str,  DeviceSecondaryArchVariant,        $(TARGET_2ND_ARCH_VARIANT))
+$(call add_json_str,  DeviceSecondaryCpuVariant,         $(TARGET_2ND_CPU_VARIANT))
+$(call add_json_list, DeviceSecondaryAbi,                $(TARGET_2ND_CPU_ABI) $(TARGET_2ND_CPU_ABI2))
+
+$(call add_json_str,  HostArch,                          $(HOST_ARCH))
+$(call add_json_str,  HostSecondaryArch,                 $(HOST_2ND_ARCH))
+$(call add_json_bool, HostStaticBinaries,                $(BUILD_HOST_static))
+
+$(call add_json_str,  CrossHost,                         $(HOST_CROSS_OS))
+$(call add_json_str,  CrossHostArch,                     $(HOST_CROSS_ARCH))
+$(call add_json_str,  CrossHostSecondaryArch,            $(HOST_CROSS_2ND_ARCH))
+
+$(call add_json_list, SanitizeHost,                      $(SANITIZE_HOST))
+$(call add_json_list, SanitizeDevice,                    $(SANITIZE_TARGET))
+$(call add_json_list, SanitizeDeviceDiag,                $(SANITIZE_TARGET_DIAG))
+$(call add_json_list, SanitizeDeviceArch,                $(SANITIZE_TARGET_ARCH))
+
+$(call add_json_bool, Safestack,                         $(filter true,$(USE_SAFESTACK)))
+$(call add_json_bool, EnableCFI,                         $(call invert_bool,$(filter false,$(ENABLE_CFI))))
+$(call add_json_list, IntegerOverflowExcludePaths,       $(INTEGER_OVERFLOW_EXCLUDE_PATHS) $(PRODUCT_INTEGER_OVERFLOW_EXCLUDE_PATHS))
+
+$(call add_json_bool, ClangTidy,                         $(filter 1 true,$(WITH_TIDY)))
+$(call add_json_str,  TidyChecks,                        $(WITH_TIDY_CHECKS))
+
+$(call add_json_bool, NativeCoverage,                    $(filter true,$(NATIVE_COVERAGE)))
+$(call add_json_list, CoveragePaths,                     $(COVERAGE_PATHS))
+$(call add_json_list, CoverageExcludePaths,              $(COVERAGE_EXCLUDE_PATHS))
+
+$(call add_json_bool, ArtUseReadBarrier,                 $(call invert_bool,$(filter false,$(PRODUCT_ART_USE_READ_BARRIER))))
+$(call add_json_bool, Binder32bit,                       $(BINDER32BIT))
+$(call add_json_bool, Brillo,                            $(BRILLO))
+$(call add_json_str,  BtConfigIncludeDir,                $(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR))
+$(call add_json_bool, Device_uses_hwc2,                  $(filter true,$(TARGET_USES_HWC2)))
+$(call add_json_list, DeviceKernelHeaders,               $(TARGET_PROJECT_SYSTEM_INCLUDES))
+$(call add_json_bool, DevicePrefer32BitExecutables,      $(filter true,$(TARGET_PREFER_32_BIT_EXECUTABLES)))
+$(call add_json_val,  DeviceUsesClang,                   $(if $(USE_CLANG_PLATFORM_BUILD),$(USE_CLANG_PLATFORM_BUILD),false))
+$(call add_json_str,  DeviceVndkVersion,                 $(BOARD_VNDK_VERSION))
+$(call add_json_bool, Malloc_not_svelte,                 $(call invert_bool,$(filter true,$(MALLOC_SVELTE))))
+$(call add_json_str,  Override_rs_driver,                $(OVERRIDE_RS_DRIVER))
+$(call add_json_bool, Treble,                            $(filter true,$(PRODUCT_FULL_TREBLE)))
+$(call add_json_bool, Uml,                               $(filter true,$(TARGET_USER_MODE_LINUX)))
+$(call add_json_str,  VendorPath,                        $(TARGET_COPY_OUT_VENDOR))
+
+$(call add_json_bool, UseGoma,                           $(filter-out false,$(USE_GOMA)))
+
+_contents := $(subst $(comma)$(newline)__SV_END,$(newline)}$(newline),$(_contents)__SV_END)
+
+$(file >$(SOONG_VARIABLES).tmp,$(_contents))
+
+$(shell if ! cmp -s $(SOONG_VARIABLES).tmp $(SOONG_VARIABLES); then \
+	  mv $(SOONG_VARIABLES).tmp $(SOONG_VARIABLES); \
 	else \
-	  rm $(SOONG_VARIABLES_TMP); \
-	fi
+	  rm $(SOONG_VARIABLES).tmp; \
+	fi)
+
+_json_list :=
+json_list :=
+csv_to_json_list :=
+add_json_val :=
+add_json_str :=
+add_json_list :=
+add_json_csv :=
+add_json_bool :=
+invert_bool :=
+_contents :=
+
+endif # CONFIGURE_SOONG
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index b251d7c..53ad50d 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -37,6 +37,7 @@
 ifdef LOCAL_SOONG_DEX_JAR
   ifndef LOCAL_IS_HOST_MODULE
     $(eval $(call copy-one-file,$(LOCAL_SOONG_DEX_JAR),$(common_javalib.jar)))
+    $(eval $(call add-dependency,$(common_javalib.jar),$(full_classes_jar) $(full_classes_header_jar)))
 
     # defines built_odex along with rule to install odex
     include $(BUILD_SYSTEM)/dex_preopt_odex_install.mk
@@ -62,6 +63,7 @@
     endif # LOCAL_DEX_PREOPT
   else # LOCAL_IS_HOST_MODULE
     $(eval $(call copy-one-file,$(LOCAL_SOONG_DEX_JAR),$(LOCAL_BUILT_MODULE)))
+    $(eval $(call add-dependency,$(LOCAL_BUILT_MODULE),$(full_classes_jar) $(full_classes_header_jar)))
   endif
 
   java-dex : $(LOCAL_BUILT_MODULE)
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index c402dce..69cf955 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -175,9 +175,9 @@
 
 # if we have custom proguarding done use the proguarded classes jar instead of the normal classes jar
 ifeq ($(filter custom,$(LOCAL_PROGUARD_ENABLED)),custom)
-aar_classes_jar = $(full_classes_proguard_jar)
-else
 aar_classes_jar = $(full_classes_jar)
+else
+aar_classes_jar = $(full_classes_pre_proguard_jar)
 endif
 
 # Rule to build AAR, archive including classes.jar, resource, etc.
diff --git a/core/tasks/boot_jars_package_check.mk b/core/tasks/boot_jars_package_check.mk
index 188c267..dc79e23 100644
--- a/core/tasks/boot_jars_package_check.mk
+++ b/core/tasks/boot_jars_package_check.mk
@@ -24,8 +24,8 @@
 stamp := $(intermediates)/stamp
 built_boot_jars := $(foreach j, $(PRODUCT_BOOT_JARS), \
   $(call intermediates-dir-for, JAVA_LIBRARIES, $(j),,COMMON)/classes.jar)
-script := build/core/tasks/check_boot_jars/check_boot_jars.py
-whitelist_file := build/core/tasks/check_boot_jars/package_whitelist.txt
+script := build/make/core/tasks/check_boot_jars/check_boot_jars.py
+whitelist_file := build/make/core/tasks/check_boot_jars/package_whitelist.txt
 
 $(stamp): PRIVATE_BOOT_JARS := $(built_boot_jars)
 $(stamp): PRIVATE_SCRIPT := $(script)
diff --git a/core/tasks/check_boot_jars/check_boot_jars.py b/core/tasks/check_boot_jars/check_boot_jars.py
index 5a0ec40..1b4540c 100755
--- a/core/tasks/check_boot_jars/check_boot_jars.py
+++ b/core/tasks/check_boot_jars/check_boot_jars.py
@@ -55,7 +55,7 @@
       package_name = package_name.replace('/', '.')
       # Skip class without a package name
       if package_name and not whitelist_re.match(package_name):
-        print >> sys.stderr, ('Error: %s: unknown package name of class file %s'
+        print >> sys.stderr, ('Error: %s contains class file %s, which is not in the whitelist'
                               % (jar, f))
         return False
   return True
diff --git a/core/tasks/check_boot_jars/package_whitelist.txt b/core/tasks/check_boot_jars/package_whitelist.txt
index 1889117..15b9990 100644
--- a/core/tasks/check_boot_jars/package_whitelist.txt
+++ b/core/tasks/check_boot_jars/package_whitelist.txt
@@ -202,12 +202,6 @@
 
 android
 
-
-###################################################
-# telephony-common.jar
-com\.google\..*
-
-
 ###################################################
 # apache-xml.jar
 org\.apache\.xml\.res
@@ -238,3 +232,8 @@
 org\.apache\.xalan\.processor
 org\.apache\.xalan\.transformer
 org\.apache\.xalan\.xslt
+
+###################################################
+# Packages in the google namespace across all bootclasspath jars.
+com\.google\.android\..*
+com\.google\.vr\.platform.*
diff --git a/core/tasks/sdk-addon.mk b/core/tasks/sdk-addon.mk
index 197d41a..593c3cd 100644
--- a/core/tasks/sdk-addon.mk
+++ b/core/tasks/sdk-addon.mk
@@ -115,7 +115,7 @@
 	$(hide) $(SOONG_ZIP) -o $@ -C $(dir $(PRIVATE_STAGING_DIR)) -D $(PRIVATE_STAGING_DIR)
 
 $(full_target_img): PRIVATE_STAGING_DIR := $(call append-path,$(staging),$(addon_dir_img))/images/$(TARGET_CPU_ABI)
-$(full_target_img): $(full_target) $(addon_img_source_prop) | $(ACP) $(SOONG_ZIP)
+$(full_target_img): $(full_target) $(addon_img_source_prop) | $(SOONG_ZIP)
 	@echo Packaging SDK Addon System-Image: $@
 	$(hide) mkdir -p $(dir $@)
 	$(ACP) -r $(PRODUCT_OUT)/data $(PRIVATE_STAGING_DIR)/data
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 802c481..abf3067 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -81,7 +81,7 @@
 # cts/tests/tests/os/assets/platform_versions.txt
 PLATFORM_VERSION.PPR1 := P
 
-# This is the current development code-name, if the build is not a final
+# These are the current development codenames, if the build is not a final
 # release build.  If this is a final release build, it is simply "REL".
 PLATFORM_VERSION_CODENAME.PPR1 := P
 
@@ -171,7 +171,7 @@
     # assuming the device can only support APIs as of the previous official
     # public release.
     # This value will always be 0 for release builds.
-    PLATFORM_PREVIEW_SDK_VERSION := 0
+    PLATFORM_PREVIEW_SDK_VERSION := 1
   endif
 endif
 
@@ -194,7 +194,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2017-08-05
+      PLATFORM_SECURITY_PATCH := 2017-10-05
 endif
 
 ifndef PLATFORM_BASE_OS
diff --git a/envsetup.sh b/envsetup.sh
index a8bef92..9a616ef 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -51,20 +51,18 @@
     cached_vars=`cat $T/build/envsetup.sh | tr '()' '  ' | awk '{for(i=1;i<=NF;i++) if($i~/get_build_var/) print $(i+1)}' | sort -u | tr '\n' ' '`
     cached_abs_vars=`cat $T/build/envsetup.sh | tr '()' '  ' | awk '{for(i=1;i<=NF;i++) if($i~/get_abs_build_var/) print $(i+1)}' | sort -u | tr '\n' ' '`
     # Call the build system to dump the "<val>=<value>" pairs as a shell script.
-    build_dicts_script=`\cd $T; CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core \
-                        command make --no-print-directory -f build/core/config.mk \
-                        dump-many-vars \
-                        DUMP_MANY_VARS="$cached_vars" \
-                        DUMP_MANY_ABS_VARS="$cached_abs_vars" \
-                        DUMP_VAR_PREFIX="var_cache_" \
-                        DUMP_ABS_VAR_PREFIX="abs_var_cache_"`
+    build_dicts_script=`\cd $T; build/soong/soong_ui.bash --dumpvars-mode \
+                        --vars="$cached_vars" \
+                        --abs-vars="$cached_abs_vars" \
+                        --var-prefix=var_cache_ \
+                        --abs-var-prefix=abs_var_cache_`
     local ret=$?
     if [ $ret -ne 0 ]
     then
         unset build_dicts_script
         return $ret
     fi
-    # Excute the script to store the "<val>=<value>" pairs as shell variables.
+    # Execute the script to store the "<val>=<value>" pairs as shell variables.
     eval "$build_dicts_script"
     ret=$?
     unset build_dicts_script
@@ -105,8 +103,7 @@
         echo "Couldn't locate the top of the tree.  Try setting TOP." >&2
         return
     fi
-    (\cd $T; CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core \
-      command make --no-print-directory -f build/core/config.mk dumpvar-abs-$1)
+    (\cd $T; build/soong/soong_ui.bash --dumpvar-mode --abs $1)
 }
 
 # Get the exact value of a build variable.
@@ -123,8 +120,7 @@
         echo "Couldn't locate the top of the tree.  Try setting TOP." >&2
         return
     fi
-    (\cd $T; CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core \
-      command make --no-print-directory -f build/core/config.mk dumpvar-$1)
+    (\cd $T; build/soong/soong_ui.bash --dumpvar-mode $1)
 }
 
 # check to see if the supplied product is one we can build
@@ -231,7 +227,22 @@
     fi
 
     export ANDROID_DEV_SCRIPTS=$T/development/scripts:$T/prebuilts/devtools/tools:$T/external/selinux/prebuilts/bin
-    export ANDROID_BUILD_PATHS=$(get_build_var ANDROID_BUILD_PATHS):$ANDROID_TOOLCHAIN:$ANDROID_TOOLCHAIN_2ND_ARCH:$ANDROID_DEV_SCRIPTS:
+
+    # add kernel specific binaries
+    case $(uname -s) in
+        Linux)
+            export ANDROID_DEV_SCRIPTS=$ANDROID_DEV_SCRIPTS:$T/prebuilts/misc/linux-x86/dtc:$T/prebuilts/misc/linux-x86/libufdt
+            ;;
+        *)
+            ;;
+    esac
+
+    ANDROID_BUILD_PATHS=$(get_build_var ANDROID_BUILD_PATHS):$ANDROID_TOOLCHAIN
+    if [ -n "$ANDROID_TOOLCHAIN_2ND_ARCH" ]; then
+        ANDROID_BUILD_PATHS=$ANDROID_BUILD_PATHS:$ANDROID_TOOLCHAIN_2ND_ARCH
+    fi
+    ANDROID_BUILD_PATHS=$ANDROID_BUILD_PATHS:$ANDROID_DEV_SCRIPTS:
+    export ANDROID_BUILD_PATHS
 
     # If prebuilts/android-emulator/<system>/ exists, prepend it to our PATH
     # to ensure that the corresponding 'emulator' binaries are used.
@@ -644,11 +655,17 @@
 # Run tapas with one or more app names (from LOCAL_PACKAGE_NAME)
 function tapas()
 {
+    local showHelp="$(echo $* | xargs -n 1 echo | \grep -E '^(help)$' | xargs)"
     local arch="$(echo $* | xargs -n 1 echo | \grep -E '^(arm|x86|mips|armv5|arm64|x86_64|mips64)$' | xargs)"
     local variant="$(echo $* | xargs -n 1 echo | \grep -E '^(user|userdebug|eng)$' | xargs)"
     local density="$(echo $* | xargs -n 1 echo | \grep -E '^(ldpi|mdpi|tvdpi|hdpi|xhdpi|xxhdpi|xxxhdpi|alldpi)$' | xargs)"
     local apps="$(echo $* | xargs -n 1 echo | \grep -E -v '^(user|userdebug|eng|arm|x86|mips|armv5|arm64|x86_64|mips64|ldpi|mdpi|tvdpi|hdpi|xhdpi|xxhdpi|xxxhdpi|alldpi)$' | xargs)"
 
+    if [ "$showHelp" != "" ]; then
+      $(gettop)/build/make/tapasHelp.sh
+      return
+    fi
+
     if [ $(echo $arch | wc -w) -gt 1 ]; then
         echo "tapas: Error: Multiple build archs supplied: $arch"
         return
@@ -695,7 +712,7 @@
 
 function gettop
 {
-    local TOPFILE=build/core/envsetup.mk
+    local TOPFILE=build/make/core/envsetup.mk
     if [ -n "$TOP" -a -f "$TOP/$TOPFILE" ] ; then
         # The following circumlocution ensures we remove symlinks from TOP.
         (cd $TOP; PWD= /bin/pwd)
@@ -729,7 +746,7 @@
         # Use scan-build to collect all static analyzer reports into directory
         # /tmp/scan-build-yyyy-mm-dd-hhmmss-*
         # The clang compiler passed by --use-analyzer here is not important.
-        # build/core/binary.mk will set CLANG_CXX and CLANG before calling
+        # build/make/core/binary.mk will set CLANG_CXX and CLANG before calling
         # c++-analyzer and ccc-analyzer.
         local CLANG_VERSION=$(get_build_var LLVM_PREBUILTS_VERSION)
         local BUILD_OS=$(get_build_var BUILD_OS)
@@ -755,7 +772,7 @@
 
 function findmakefile()
 {
-    local TOPFILE=build/core/envsetup.mk
+    local TOPFILE=build/make/core/envsetup.mk
     local HERE=$PWD
     local T=
     while [ \( ! \( -f $TOPFILE \) \) -a \( $PWD != "/" \) ]; do
@@ -965,7 +982,7 @@
 
 function cproj()
 {
-    local TOPFILE=build/core/envsetup.mk
+    local TOPFILE=build/make/core/envsetup.mk
     local HERE=$PWD
     local T=
     while [ \( ! \( -f $TOPFILE \) \) -a \( $PWD != "/" \) ]; do
diff --git a/tapasHelp.sh b/tapasHelp.sh
new file mode 100755
index 0000000..058ac1d
--- /dev/null
+++ b/tapasHelp.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# locate some directories
+cd "$(dirname $0)"
+SCRIPT_DIR="${PWD}"
+cd ../..
+TOP="${PWD}"
+
+message='usage: tapas [<App1> <App2> ...] [arm|x86|mips|armv5|arm64|x86_64|mips64] [eng|userdebug|user]
+
+tapas selects individual apps to be built by the Android build system. Unlike
+"lunch", "tapas" does not request the building of images for a device.
+Additionally, an app built with "tapas" will have its dex file inside its apk,
+which should cause it to be suitable for installing on any api-compatible
+device. In other words, "tapas" configures the build of unbundled apps.
+
+The names <App1> <App2> ... should match LOCAL_PACKAGE_NAME as defined in an
+Android.mk
+
+The usage of the other arguments matches that of the rest of the platform
+build system and can be found by running `m help`'
+
+echo "$message"
diff --git a/target/board/generic/sepolicy/file.te b/target/board/generic/sepolicy/file.te
new file mode 100644
index 0000000..f4ae9e4
--- /dev/null
+++ b/target/board/generic/sepolicy/file.te
@@ -0,0 +1 @@
+type sysfs_writable, fs_type, sysfs_type, mlstrustedobject;
diff --git a/target/board/generic/sepolicy/file_contexts b/target/board/generic/sepolicy/file_contexts
index a9b1472..f550f4d 100644
--- a/target/board/generic/sepolicy/file_contexts
+++ b/target/board/generic/sepolicy/file_contexts
@@ -15,6 +15,7 @@
 /dev/qemu_.*                 u:object_r:qemu_device:s0
 /dev/ttyGF[0-9]*             u:object_r:serial_device:s0
 /dev/ttyS2                   u:object_r:console_device:s0
+/sys/qemu_trace(/.*)?        u:object_r:sysfs_writable:s0
 /vendor/bin/init\.ranchu-core\.sh u:object_r:goldfish_setup_exec:s0
 /vendor/bin/init\.ranchu-net\.sh u:object_r:goldfish_setup_exec:s0
 /vendor/bin/qemu-props       u:object_r:qemu_props_exec:s0
diff --git a/target/board/generic/sepolicy/genfs_contexts b/target/board/generic/sepolicy/genfs_contexts
new file mode 100644
index 0000000..bdcead1
--- /dev/null
+++ b/target/board/generic/sepolicy/genfs_contexts
@@ -0,0 +1,4 @@
+# On the emulator, device tree dir is configured to be
+# /sys/bus/platform/devices/ANDR0001:00/properties/android/ which is a symlink to
+# /sys/devices/platform/ANDR0001:00/properties/android/
+genfscon sysfs /devices/platform/ANDR0001:00/properties/android u:object_r:sysfs_dt_firmware_android:s0
diff --git a/target/board/generic/sepolicy/qemu_props.te b/target/board/generic/sepolicy/qemu_props.te
index 33055c8..0f5ec8c 100644
--- a/target/board/generic/sepolicy/qemu_props.te
+++ b/target/board/generic/sepolicy/qemu_props.te
@@ -4,7 +4,6 @@
 
 init_daemon_domain(qemu_props)
 
-set_prop(qemu_props, opengles_prop)
 set_prop(qemu_props, qemu_prop)
 set_prop(qemu_props, dalvik_prop)
 set_prop(qemu_props, qemu_cmdline)
diff --git a/target/board/generic_arm64/BoardConfig.mk b/target/board/generic_arm64/BoardConfig.mk
index d6df2cf..9beb9a3 100644
--- a/target/board/generic_arm64/BoardConfig.mk
+++ b/target/board/generic_arm64/BoardConfig.mk
@@ -25,7 +25,7 @@
 TARGET_2ND_CPU_ABI := armeabi-v7a
 TARGET_2ND_CPU_ABI2 := armeabi
 
-ifneq ($(TARGET_BUILD_APPS)$(filter cts,$(MAKECMDGOALS)),)
+ifneq ($(TARGET_BUILD_APPS)$(filter cts sdk,$(MAKECMDGOALS)),)
 # DO NOT USE
 # DO NOT USE
 #
diff --git a/target/board/generic_arm64_ab/BoardConfig.mk b/target/board/generic_arm64_ab/BoardConfig.mk
index dafd592..0c07566 100644
--- a/target/board/generic_arm64_ab/BoardConfig.mk
+++ b/target/board/generic_arm64_ab/BoardConfig.mk
@@ -46,6 +46,7 @@
 
 # Generic AOSP image does NOT support HWC1
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 TARGET_ARCH := arm64
 TARGET_ARCH_VARIANT := armv8-a
diff --git a/target/board/generic_x86_arm/BoardConfig.mk b/target/board/generic_x86_arm/BoardConfig.mk
index 847ad80..131c001 100644
--- a/target/board/generic_x86_arm/BoardConfig.mk
+++ b/target/board/generic_x86_arm/BoardConfig.mk
@@ -44,6 +44,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation host and guest libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/product/aosp_arm64_a.mk b/target/product/aosp_arm64_a.mk
index 535b3a4..4258f04 100644
--- a/target/product/aosp_arm64_a.mk
+++ b/target/product/aosp_arm64_a.mk
@@ -23,7 +23,6 @@
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
 
 PRODUCT_NAME := aosp_arm64_a
 PRODUCT_DEVICE := generic_arm64_a
diff --git a/target/product/aosp_arm64_ab.mk b/target/product/aosp_arm64_ab.mk
index fe3afb7..ae50c42 100644
--- a/target/product/aosp_arm64_ab.mk
+++ b/target/product/aosp_arm64_ab.mk
@@ -29,7 +29,6 @@
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
 
 PRODUCT_NAME := aosp_arm64_ab
 PRODUCT_DEVICE := generic_arm64_ab
diff --git a/target/product/aosp_arm_a.mk b/target/product/aosp_arm_a.mk
index c3188e0..6be8e82 100644
--- a/target/product/aosp_arm_a.mk
+++ b/target/product/aosp_arm_a.mk
@@ -22,7 +22,6 @@
 include build/make/target/product/treble_common.mk
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
 
 PRODUCT_NAME := aosp_arm_a
 PRODUCT_DEVICE := generic_arm_a
diff --git a/target/product/base.mk b/target/product/base.mk
index 0e3647d..a182f18 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -150,7 +150,8 @@
 PRODUCT_PACKAGES_DEBUG := \
     logpersist.start \
     perfprofd \
-    sqlite3
+    sqlite3 \
+    strace
 
 PRODUCT_COPY_FILES := $(call add-to-product-copy-files-if-exists,\
     frameworks/base/config/preloaded-classes:system/etc/preloaded-classes)
diff --git a/target/product/core_base.mk b/target/product/core_base.mk
index 03d33e1..151e8de 100644
--- a/target/product/core_base.mk
+++ b/target/product/core_base.mk
@@ -43,6 +43,7 @@
     libstagefright_soft_amrwbenc \
     libstagefright_soft_avcdec \
     libstagefright_soft_avcenc \
+    libstagefright_soft_flacdec \
     libstagefright_soft_flacenc \
     libstagefright_soft_g711dec \
     libstagefright_soft_gsmdec \
@@ -60,6 +61,10 @@
     libwebrtc_audio_preprocessing \
     mdnsd \
     requestsync \
-    wifi-service
+
+# Wifi modules
+PRODUCT_PACKAGES += \
+    wifi-service \
+    wificond \
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_minimal.mk)
diff --git a/target/product/core_minimal.mk b/target/product/core_minimal.mk
index 523df7a..c3eb9ea 100644
--- a/target/product/core_minimal.mk
+++ b/target/product/core_minimal.mk
@@ -60,7 +60,6 @@
     iptables \
     gatekeeperd \
     keystore \
-    keystore.default \
     ld.config.txt \
     ld.mc \
     libaaudio \
@@ -88,7 +87,11 @@
     voip-common \
     webview \
     webview_zygote \
-    wifi-service
+
+# Wifi modules
+PRODUCT_PACKAGES += \
+    wifi-service \
+    wificond \
 
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.software.webview.xml:system/etc/permissions/android.software.webview.xml
diff --git a/target/product/core_tiny.mk b/target/product/core_tiny.mk
index 5ced1a6..944be74 100644
--- a/target/product/core_tiny.mk
+++ b/target/product/core_tiny.mk
@@ -59,7 +59,6 @@
     iptables \
     gatekeeperd \
     keystore \
-    keystore.default \
     ld.mc \
     libaaudio \
     libOpenMAXAL \
@@ -83,7 +82,11 @@
     telephony-common \
     voip-common \
     logd \
-    wifi-service
+
+# Wifi modules
+PRODUCT_PACKAGES += \
+    wifi-service \
+    wificond \
 
 ifeq ($(TARGET_CORE_JARS),)
 $(error TARGET_CORE_JARS is empty; cannot initialize PRODUCT_BOOT_JARS variable)
diff --git a/target/product/embedded.mk b/target/product/embedded.mk
index 349abd4..3466d1a 100644
--- a/target/product/embedded.mk
+++ b/target/product/embedded.mk
@@ -20,7 +20,7 @@
 PRODUCT_PACKAGES += \
     adb \
     adbd \
-    android.hardware.configstore@1.0-service \
+    android.hardware.configstore@1.1-service \
     android.hidl.allocator@1.0-service \
     android.hidl.memory@1.0-impl \
     atrace \
diff --git a/target/product/emulator.mk b/target/product/emulator.mk
index 00b3533..a9a5306 100644
--- a/target/product/emulator.mk
+++ b/target/product/emulator.mk
@@ -135,12 +135,13 @@
 
 
 PRODUCT_COPY_FILES += \
-    device/generic/goldfish/init.ranchu-core.sh:vendor/bin/init.ranchu-core.sh \
-    device/generic/goldfish/init.ranchu-net.sh:vendor/bin/init.ranchu-net.sh \
+    device/generic/goldfish/init.ranchu-core.sh:$(TARGET_COPY_OUT_VENDOR)/bin/init.ranchu-core.sh \
+    device/generic/goldfish/init.ranchu-net.sh:$(TARGET_COPY_OUT_VENDOR)/bin/init.ranchu-net.sh \
     device/generic/goldfish/init.ranchu.rc:root/init.ranchu.rc \
     device/generic/goldfish/fstab.ranchu:root/fstab.ranchu \
     device/generic/goldfish/fstab.ranchu.early:root/fstab.ranchu.early \
     device/generic/goldfish/ueventd.ranchu.rc:root/ueventd.ranchu.rc \
+    device/generic/goldfish/manifest.xml:$(TARGET_COPY_OUT_VENDOR)/manifest.xml \
     device/generic/goldfish/input/goldfish_rotary.idc:system/usr/idc/goldfish_rotary.idc \
     device/generic/goldfish/manifest.xml:$(TARGET_COPY_OUT_VENDOR)/manifest.xml \
     device/generic/goldfish/data/etc/permissions/privapp-permissions-goldfish.xml:system/etc/permissions/privapp-permissions-goldfish.xml \
diff --git a/target/product/full_base.mk b/target/product/full_base.mk
index 65bdf0f..f2652eb 100644
--- a/target/product/full_base.mk
+++ b/target/product/full_base.mk
@@ -48,9 +48,6 @@
 # Get some sounds
 $(call inherit-product-if-exists, frameworks/base/data/sounds/AllAudio.mk)
 
-# Get the TTS language packs
-$(call inherit-product-if-exists, external/svox/pico/lang/all_pico_languages.mk)
-
 # Get a list of languages.
 $(call inherit-product, $(SRC_TARGET_DIR)/product/locales_full.mk)
 
diff --git a/target/product/generic_no_telephony.mk b/target/product/generic_no_telephony.mk
index 52819d2..190a889 100644
--- a/target/product/generic_no_telephony.mk
+++ b/target/product/generic_no_telephony.mk
@@ -28,6 +28,7 @@
     OneTimeInitializer \
     Provision \
     SystemUI \
+    SysuiDarkThemeOverlay \
     EasterEgg \
     WallpaperCropper
 
diff --git a/target/product/sdk_base.mk b/target/product/sdk_base.mk
index 93356d6..703da9b 100644
--- a/target/product/sdk_base.mk
+++ b/target/product/sdk_base.mk
@@ -45,6 +45,7 @@
 	SoftKeyboard \
 	sqlite3 \
 	SystemUI \
+	SysuiDarkThemeOverlay \
 	EasterEgg \
 	WallpaperPicker \
 	WidgetPreview
@@ -118,14 +119,6 @@
 $(call inherit-product-if-exists, frameworks/webview/chromium/chromium.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core.mk)
 
-# include available languages for TTS in the system image
--include external/svox/pico/lang/PicoLangDeDeInSystem.mk
--include external/svox/pico/lang/PicoLangEnGBInSystem.mk
--include external/svox/pico/lang/PicoLangEnUsInSystem.mk
--include external/svox/pico/lang/PicoLangEsEsInSystem.mk
--include external/svox/pico/lang/PicoLangFrFrInSystem.mk
--include external/svox/pico/lang/PicoLangItItInSystem.mk
-
 # locale. en_US is both first and in alphabetical order to
 # ensure this is the default locale.
 PRODUCT_LOCALES := \
diff --git a/target/product/security/README b/target/product/security/README
index 15f2e93..6a6e62d 100644
--- a/target/product/security/README
+++ b/target/product/security/README
@@ -34,5 +34,5 @@
     $ java -jar out/host/linux-x86/framework/dumpkey.jar build/target/product/security/testkey.x509.pem
     {64,0xc926ad21,{1795090719,2141396315,950055447,2581568430,4268923165,1920809988,546586521,3498997798,1776797858,3740060814,1805317999,1429410244,129622599,1422441418,1783893377,1222374759,2563319927,323993566,28517732,609753416,1826472888,215237850,4261642700,4049082591,3228462402,774857746,154822455,2497198897,2758199418,3019015328,2794777644,87251430,2534927978,120774784,571297800,3695899472,2479925187,3811625450,3401832990,2394869647,3267246207,950095497,555058928,414729973,1136544882,3044590084,465547824,4058146728,2731796054,1689838846,3890756939,1048029507,895090649,247140249,178744550,3547885223,3165179243,109881576,3944604415,1044303212,3772373029,2985150306,3737520932,3599964420},{3437017481,3784475129,2800224972,3086222688,251333580,2131931323,512774938,325948880,2657486437,2102694287,3820568226,792812816,1026422502,2053275343,2800889200,3113586810,165549746,4273519969,4065247892,1902789247,772932719,3941848426,3652744109,216871947,3164400649,1942378755,3996765851,1055777370,964047799,629391717,2232744317,3910558992,191868569,2758883837,3682816752,2997714732,2702529250,3570700455,3776873832,3924067546,3555689545,2758825434,1323144535,61311905,1997411085,376844204,213777604,4077323584,9135381,1625809335,2804742137,2952293945,1117190829,4237312782,1825108855,3013147971,1111251351,2568837572,1684324211,2520978805,367251975,810756730,2353784344,1175080310}}
 
-This is called by build/core/Makefile to incorporate the OTA signing keys
+This is called by build/make/core/Makefile to incorporate the OTA signing keys
 into the recovery image.
diff --git a/target/product/treble_common.mk b/target/product/treble_common.mk
index 220c734..829d5f1 100644
--- a/target/product/treble_common.mk
+++ b/target/product/treble_common.mk
@@ -24,14 +24,6 @@
 PRODUCT_PACKAGES += \
     libvulkan \
 
-PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/bootdevice/by-name/system
-
-# Wifi:
-#   Wifi HAL (android.hardware.wifi@1.0-service, wpa_supplicant,
-#   and wpa_supplicant.conf) is not here. They are in vendor.img
-PRODUCT_PACKAGES += \
-    wificond \
-
 # Audio:
 USE_XML_AUDIO_POLICY_CONF := 1
 # The following policy XML files are used as fallback for
@@ -48,8 +40,3 @@
 #   audio.a2dp.default to support A2DP if board has the capability.
 PRODUCT_PACKAGES += \
     audio.a2dp.default
-
-# May need to review why the followings are needed in generic system image.
-PRODUCT_COPY_FILES += \
-    device/generic/goldfish/data/etc/apns-conf.xml:system/etc/apns-conf.xml
-
diff --git a/target/product/vndk/Android.mk b/target/product/vndk/Android.mk
index 20e8436..e7f07e7 100644
--- a/target/product/vndk/Android.mk
+++ b/target/product/vndk/Android.mk
@@ -1,7 +1,101 @@
+ifneq ($(BOARD_VNDK_VERSION),)
 LOCAL_PATH:= $(call my-dir)
 
-include $(CLEAR_VARS)
+#####################################################################
+# Setting the VNDK version. Version is 10000.0 for not-yet-published
+# platform and xx.y for released platform.
+vndk_major_ver := 10000
+vndk_minor_ver := 0
 
+#TODO(b/68027291): Revive this check when we have stable VNDK in P or later.
+#ifneq ($(vndk_major_ver), $(PLATFORM_SDK_VERSION))
+#$(error vndk_major_version does not match PLATFORM_SDK_VERSION, please update.)
+#endif
+
+ifneq (REL,$(PLATFORM_VERSION_CODENAME))
+    vndk_major_ver := 10000
+    vndk_minor_ver := 0
+endif
+PLATFORM_VNDK_VERSION := $(vndk_major_ver).$(vndk_minor_ver)
+vndk_major_ver :=
+vndk_minor_ver :=
+
+#####################################################################
+# Create the list of vndk libraries from the source code.
+INTERNAL_VNDK_LIB_LIST := $(call intermediates-dir-for,PACKAGING,vndk)/libs.txt
+$(INTERNAL_VNDK_LIB_LIST):
+	@echo "Generate: $@"
+	@mkdir -p $(dir $@)
+	$(hide) echo -n > $@
+	$(hide) $(foreach lib, $(LLNDK_LIBRARIES), \
+	  echo LLNDK: $(lib).so >> $@;)
+	$(hide) $(foreach lib, $(VNDK_SAMEPROCESS_LIBRARIES), \
+	  echo VNDK-SP: $(lib).so >> $@;)
+	$(hide) $(foreach lib, $(VNDK_CORE_LIBRARIES), \
+	  echo VNDK-core: $(lib).so >> $@;)
+	$(hide) $(foreach lib, $(VNDK_PRIVATE_LIBRARIES), \
+	  echo VNDK-private: $(lib).so >> $@;)
+
+#####################################################################
+# This is the up-to-date list of vndk libs.
+# TODO(b/62012285): the lib list should be stored somewhere under
+# /prebuilts/vndk
+LATEST_VNDK_LIB_LIST := $(LOCAL_PATH)/$(PLATFORM_VNDK_VERSION).txt
+
+#####################################################################
+# Check the generate list against the latest list stored in the
+# source tree
+.PHONY: check-vndk-list
+
+ifeq (REL,$(PLATFORM_VERSION_CODENAME))
+# The check is enforced in release branches
+droidcore: check-vndk-list
+endif
+
+check-vndk-list-timestamp := $(call intermediates-dir-for,PACKAGING,vndk)/check-list-timestamp
+check-vndk-list: $(check-vndk-list-timestamp)
+
+_vndk_check_failure_message := "VNDK library list has changed."
+ifeq (REL,$(PLATFORM_VERSION_CODENAME)
+_vndk_check_failure_message += "This isn't allowed in API locked branches."
+else
+_vndk_check_failure_message += "Run update-vndk-list.sh to update the list."
+endif
+
+$(check-vndk-list-timestamp): $(INTERNAL_VNDK_LIB_LIST) $(LATEST_VNDK_LIB_LIST) $(HOST_OUT_EXECUTABLES)/update-vndk-list.sh
+	$(hide) ( diff --old-line-format="Removed %L" \
+	  --new-line-format="Added %L" \
+	  --unchanged-line-format="" \
+	  $(LATEST_VNDK_LIB_LIST) $(INTERNAL_VNDK_LIB_LIST) \
+	  || ( echo $(_vndk_check_failure_message); exit 1 ))
+	$(hide) mkdir -p $(dir $@)
+	$(hide) touch $@
+
+#####################################################################
+# Script to update the latest VNDK lib list
+include $(CLEAR_VARS)
+LOCAL_MODULE := update-vndk-list.sh
+LOCAL_MODULE_CLASS := EXECUTABLES
+LOCAL_MODULE_STEM := $(LOCAL_MODULE)
+LOCAL_IS_HOST_MODULE := true
+include $(BUILD_SYSTEM)/base_rules.mk
+$(LOCAL_BUILT_MODULE): PRIVATE_INTERNAL_VNDK_LIB_LIST := $(INTERNAL_VNDK_LIB_LIST)
+$(LOCAL_BUILT_MODULE): PRIVATE_LATEST_VNDK_LIB_LIST := $(LATEST_VNDK_LIB_LIST)
+$(LOCAL_BUILT_MODULE):
+	@echo "Generate: $@"
+	@mkdir -p $(dir $@)
+	@rm -f $@
+	$(hide) echo "#!/bin/bash" > $@
+ifeq (REL,$(PLATFORM_VERSION_CODENAME))
+	$(hide) echo "echo Updating VNDK library list is NOT allowed in API locked branches." >> $@; \
+	        echo "exit 1" >> $@
+else
+	$(hide) echo "cp $(PRIVATE_INTERNAL_VNDK_LIB_LIST) $(PRIVATE_LATEST_VNDK_LIB_LIST)" >> $@; \
+	        echo "echo $(PRIVATE_LATEST_VNDK_LIB_LIST) updated." >> $@
+endif
+	@chmod a+x $@
+
+include $(CLEAR_VARS)
 LOCAL_MODULE := vndk_package
 LOCAL_REQUIRED_MODULES := \
     $(addsuffix .vendor,$(VNDK_CORE_LIBRARIES)) \
@@ -9,3 +103,4 @@
     $(LLNDK_LIBRARIES)
 
 include $(BUILD_PHONY_PACKAGE)
+endif # BOARD_VNDK_VERSION is set
diff --git a/tools/apicheck/etc/apicheck b/tools/apicheck/etc/apicheck
index c710c46..e4ffb77 100644
--- a/tools/apicheck/etc/apicheck
+++ b/tools/apicheck/etc/apicheck
@@ -18,7 +18,7 @@
 # and set up progdir to be the fully-qualified pathname of its directory.
 #
 # The classpath and other java options used in apicheck are specified in
-# build/core/tasks/apicheck.mk.
+# build/make/core/tasks/apicheck.mk.
 
 prog="$0"
 while [ -h "${prog}" ]; do
diff --git a/tools/post_process_props.py b/tools/post_process_props.py
index 83c6f9a..9ddd5d7 100755
--- a/tools/post_process_props.py
+++ b/tools/post_process_props.py
@@ -35,7 +35,7 @@
 def mangle_default_prop_override(prop):
   pass
 
-# Put the modifications that you need to make into the /default.prop into this
+# Put the modifications that you need to make into the /system/etc/prop.default into this
 # function. The prop object has get(name) and put(name,value) methods.
 def mangle_default_prop(prop):
   # If ro.debuggable is 1, then enable adb on USB by default
@@ -64,7 +64,7 @@
   buildprops = prop.to_dict()
   for key, value in buildprops.iteritems():
     # Check build properties' length.
-    if len(value) > PROP_VALUE_MAX:
+    if len(value) > PROP_VALUE_MAX and not key.startswith("ro."):
       check_pass = False
       sys.stderr.write("error: %s cannot exceed %d bytes: " %
                        (key, PROP_VALUE_MAX))
@@ -122,7 +122,8 @@
   elif (filename.endswith("/vendor/default.prop") or
         filename.endswith("/odm/default.prop")):
     mangle_default_prop_override(properties)
-  elif filename.endswith("/default.prop"):
+  elif (filename.endswith("/default.prop") or # legacy
+        filename.endswith("/prop.default")):
     mangle_default_prop(properties)
   else:
     sys.stderr.write("bad command line: " + str(argv) + "\n")
diff --git a/tools/releasetools/add_img_to_target_files.py b/tools/releasetools/add_img_to_target_files.py
index 91213ba..d31a297 100755
--- a/tools/releasetools/add_img_to_target_files.py
+++ b/tools/releasetools/add_img_to_target_files.py
@@ -52,13 +52,13 @@
   sys.exit(1)
 
 import datetime
-import errno
 import hashlib
 import os
 import shlex
 import shutil
 import subprocess
 import tempfile
+import uuid
 import zipfile
 
 import build_image
@@ -214,22 +214,6 @@
 def CreateImage(input_dir, info_dict, what, output_file, block_list=None):
   print("creating " + what + ".img...")
 
-  # The name of the directory it is making an image out of matters to
-  # mkyaffs2image.  It wants "system" but we have a directory named
-  # "SYSTEM", so create a symlink.
-  temp_dir = tempfile.mkdtemp()
-  OPTIONS.tempfiles.append(temp_dir)
-  try:
-    os.symlink(os.path.join(input_dir, what.upper()),
-               os.path.join(temp_dir, what))
-  except OSError as e:
-    # bogus error on my mac version?
-    #   File "./build/tools/releasetools/img_from_target_files"
-    #     os.path.join(OPTIONS.input_tmp, "system"))
-    # OSError: [Errno 17] File exists
-    if e.errno == errno.EEXIST:
-      pass
-
   image_props = build_image.ImagePropFromGlobalDict(info_dict, what)
   fstab = info_dict["fstab"]
   mount_point = "/" + what
@@ -258,7 +242,20 @@
   if block_list:
     image_props["block_list"] = block_list.name
 
-  succ = build_image.BuildImage(os.path.join(temp_dir, what),
+  # Use repeatable ext4 FS UUID and hash_seed UUID (based on partition name and
+  # build fingerprint).
+  uuid_seed = what + "-"
+  if "build.prop" in info_dict:
+    build_prop = info_dict["build.prop"]
+    if "ro.build.fingerprint" in build_prop:
+      uuid_seed += build_prop["ro.build.fingerprint"]
+    elif "ro.build.thumbprint" in build_prop:
+      uuid_seed += build_prop["ro.build.thumbprint"]
+  image_props["uuid"] = str(uuid.uuid5(uuid.NAMESPACE_URL, uuid_seed))
+  hash_seed = "hash_seed-" + uuid_seed
+  image_props["hash_seed"] = str(uuid.uuid5(uuid.NAMESPACE_URL, hash_seed))
+
+  succ = build_image.BuildImage(os.path.join(input_dir, what.upper()),
                                 image_props, output_file.name)
   assert succ, "build " + what + ".img image failed"
 
@@ -308,21 +305,11 @@
   timestamp = (datetime.datetime(2009, 1, 1) - epoch).total_seconds()
   image_props["timestamp"] = int(timestamp)
 
-  # The name of the directory it is making an image out of matters to
-  # mkyaffs2image.  So we create a temp dir, and within it we create an
-  # empty dir named "data", or a symlink to the DATA dir,
-  # and build the image from that.
-  temp_dir = tempfile.mkdtemp()
-  OPTIONS.tempfiles.append(temp_dir)
-  user_dir = os.path.join(temp_dir, "data")
-  empty = (OPTIONS.info_dict.get("userdata_img_with_data") != "true")
-  if empty:
-    # Create an empty dir.
-    os.mkdir(user_dir)
+  if OPTIONS.info_dict.get("userdata_img_with_data") == "true":
+    user_dir = os.path.join(OPTIONS.input_tmp, "DATA")
   else:
-    # Symlink to the DATA dir.
-    os.symlink(os.path.join(OPTIONS.input_tmp, "DATA"),
-               user_dir)
+    user_dir = tempfile.mkdtemp()
+    OPTIONS.tempfiles.append(user_dir)
 
   fstab = OPTIONS.info_dict["fstab"]
   if fstab:
@@ -455,13 +442,8 @@
   timestamp = (datetime.datetime(2009, 1, 1) - epoch).total_seconds()
   image_props["timestamp"] = int(timestamp)
 
-  # The name of the directory it is making an image out of matters to
-  # mkyaffs2image.  So we create a temp dir, and within it we create an
-  # empty dir named "cache", and build the image from that.
-  temp_dir = tempfile.mkdtemp()
-  OPTIONS.tempfiles.append(temp_dir)
-  user_dir = os.path.join(temp_dir, "cache")
-  os.mkdir(user_dir)
+  user_dir = tempfile.mkdtemp()
+  OPTIONS.tempfiles.append(user_dir)
 
   fstab = OPTIONS.info_dict["fstab"]
   if fstab:
diff --git a/tools/releasetools/blockimgdiff.py b/tools/releasetools/blockimgdiff.py
index b8123c0..c95512d 100644
--- a/tools/releasetools/blockimgdiff.py
+++ b/tools/releasetools/blockimgdiff.py
@@ -717,6 +717,7 @@
       diff_total = len(diff_queue)
       patches = [None] * diff_total
       error_messages = []
+      warning_messages = []
       if sys.stdout.isatty():
         global diff_done
         diff_done = 0
@@ -750,16 +751,34 @@
             with open(tgt_file, "wb") as fd:
               self.tgt.WriteRangeDataToFd(tgt_ranges, fd)
 
+          message = []
           try:
             patch = compute_patch(src_file, tgt_file, imgdiff)
           except ValueError as e:
+            message.append(
+                "Failed to generate %s for %s: tgt=%s, src=%s:\n%s" % (
+                "imgdiff" if imgdiff else "bsdiff",
+                xf.tgt_name if xf.tgt_name == xf.src_name else
+                    xf.tgt_name + " (from " + xf.src_name + ")",
+                xf.tgt_ranges, xf.src_ranges, e.message))
+            # TODO(b/68016761): Better handle the holes in mke2fs created images.
+            if imgdiff:
+              try:
+                patch = compute_patch(src_file, tgt_file, imgdiff=False)
+                message.append(
+                    "Fell back and generated with bsdiff instead for %s" % (
+                    xf.tgt_name,))
+                with lock:
+                  warning_messages.extend(message)
+                del message[:]
+              except ValueError as e:
+                message.append(
+                    "Also failed to generate with bsdiff for %s:\n%s" % (
+                    xf.tgt_name, e.message))
+
+          if message:
             with lock:
-              error_messages.append(
-                  "Failed to generate %s for %s: tgt=%s, src=%s:\n%s" % (
-                      "imgdiff" if imgdiff else "bsdiff",
-                      xf.tgt_name if xf.tgt_name == xf.src_name else
-                          xf.tgt_name + " (from " + xf.src_name + ")",
-                      xf.tgt_ranges, xf.src_ranges, e.message))
+              error_messages.extend(message)
 
           with lock:
             patches[patch_index] = (xf_index, patch)
@@ -781,8 +800,15 @@
       if sys.stdout.isatty():
         print('\n')
 
+      if warning_messages:
+        print('WARNING:')
+        print('\n'.join(warning_messages))
+        print('\n\n\n')
+
       if error_messages:
+        print('ERROR:')
         print('\n'.join(error_messages))
+        print('\n\n\n')
         sys.exit(1)
     else:
       patches = []
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 816cf4e..a388f8a 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -483,6 +483,12 @@
       build_command.extend(["-e", prop_dict["flash_erase_block_size"]])
     if "flash_logical_block_size" in prop_dict:
       build_command.extend(["-o", prop_dict["flash_logical_block_size"]])
+    # Specify UUID and hash_seed if using mke2fs.
+    if prop_dict["ext_mkuserimg"] == "mkuserimg_mke2fs.sh":
+      if "uuid" in prop_dict:
+        build_command.extend(["-U", prop_dict["uuid"]])
+      if "hash_seed" in prop_dict:
+        build_command.extend(["-S", prop_dict["hash_seed"]])
     if "selinux_fc" in prop_dict:
       build_command.append(prop_dict["selinux_fc"])
   elif fs_type.startswith("squash"):
diff --git a/tools/releasetools/sign_target_files_apks.py b/tools/releasetools/sign_target_files_apks.py
index a76c9c9..58bf489 100755
--- a/tools/releasetools/sign_target_files_apks.py
+++ b/tools/releasetools/sign_target_files_apks.py
@@ -102,6 +102,7 @@
 import errno
 import os
 import re
+import stat
 import subprocess
 import tempfile
 import zipfile
@@ -225,11 +226,17 @@
     # System properties.
     elif info.filename in ("SYSTEM/build.prop",
                            "VENDOR/build.prop",
-                           "BOOT/RAMDISK/default.prop",
-                           "ROOT/default.prop",
-                           "RECOVERY/RAMDISK/default.prop"):
+                           "SYSTEM/etc/prop.default",
+                           "BOOT/RAMDISK/prop.default",
+                           "BOOT/RAMDISK/default.prop",  # legacy
+                           "ROOT/default.prop",  # legacy
+                           "RECOVERY/RAMDISK/prop.default",
+                           "RECOVERY/RAMDISK/default.prop"):  # legacy
       print "rewriting %s:" % (info.filename,)
-      new_data = RewriteProps(data, misc_info)
+      if stat.S_ISLNK(info.external_attr >> 16):
+        new_data = data
+      else:
+        new_data = RewriteProps(data, misc_info)
       common.ZipWriteStr(output_tf_zip, out_info, new_data)
 
     elif info.filename.endswith("mac_permissions.xml"):
diff --git a/tools/signapk/Android.mk b/tools/signapk/Android.mk
index 051a51d..8082842 100644
--- a/tools/signapk/Android.mk
+++ b/tools/signapk/Android.mk
@@ -23,9 +23,9 @@
 LOCAL_JAR_MANIFEST := SignApk.mf
 LOCAL_STATIC_JAVA_LIBRARIES := \
     apksig \
-    bouncycastle-host \
-    bouncycastle-bcpkix-host \
-    conscrypt-host
+    bouncycastle \
+    bouncycastle-bcpkix \
+    conscrypt
 LOCAL_REQUIRED_MODULES := libconscrypt_openjdk_jni
 include $(BUILD_HOST_JAVA_LIBRARY)
 
diff --git a/tools/signtos/Android.mk b/tools/signtos/Android.mk
index 94ab944..3e869b3 100644
--- a/tools/signtos/Android.mk
+++ b/tools/signtos/Android.mk
@@ -21,5 +21,5 @@
 LOCAL_MODULE := signtos
 LOCAL_SRC_FILES := SignTos.java
 LOCAL_JAR_MANIFEST := SignTos.mf
-LOCAL_STATIC_JAVA_LIBRARIES := bouncycastle-host bouncycastle-bcpkix-host
+LOCAL_STATIC_JAVA_LIBRARIES := bouncycastle bouncycastle-bcpkix
 include $(BUILD_HOST_JAVA_LIBRARY)
diff --git a/tools/vendor_buildinfo.sh b/tools/vendor_buildinfo.sh
index 2854fa8..485ada3 100755
--- a/tools/vendor_buildinfo.sh
+++ b/tools/vendor_buildinfo.sh
@@ -6,4 +6,10 @@
 echo "ro.product.board=$TARGET_BOOTLOADER_BOARD_NAME"
 echo "ro.board.platform=$TARGET_BOARD_PLATFORM"
 
+echo "ro.vendor.product.manufacturer=$PRODUCT_MANUFACTURER"
+echo "ro.vendor.product.model=$PRODUCT_MODEL"
+echo "ro.vendor.product.brand=$PRODUCT_BRAND"
+echo "ro.vendor.product.name=$PRODUCT_NAME"
+echo "ro.vendor.product.device=$TARGET_DEVICE"
+
 echo "# end build properties"