diff --git a/core/Makefile b/core/Makefile
index da961f2..23dc59a 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1606,7 +1606,7 @@
 		$(INSTALLED_ODM_BUILD_PROP_TARGET) \
 		$(INSTALLED_PRODUCT_BUILD_PROP_TARGET) \
 		$(INSTALLED_PRODUCT_SERVICES_BUILD_PROP_TARGET)
-	@echo "Target recovery buildinfo: $@
+	@echo "Target recovery buildinfo: $@"
 	$(hide) mkdir -p $(dir $@)
 	$(hide) rm -f $@
 	$(hide) cat $(INSTALLED_DEFAULT_PROP_TARGET) > $@
@@ -2767,8 +2767,10 @@
 # - not-chained: The --include_descriptors_from_image option for make_vbmeta_image
 #   will include the kernel cmdline descriptor from system.img into vbmeta.img
 ifeq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
+ifeq ($(filter system, $(BOARD_SUPER_PARTITION_PARTITION_LIST)),)
 BOARD_AVB_SYSTEM_ADD_HASHTREE_FOOTER_ARGS += --setup_as_rootfs_from_kernel
 endif
+endif
 
 BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --padding_size 4096
 BOARD_AVB_MAKE_VBMETA_MAINLINE_IMAGE_ARGS += --padding_size 4096
diff --git a/core/apicheck_msg_current.txt b/core/apicheck_msg_current.txt
deleted file mode 100644
index 440e7f8..0000000
--- a/core/apicheck_msg_current.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-
-******************************
-You have tried to change the API from what has been previously approved.
-
-To make these errors go away, you have two choices:
-   1) You can add "@hide" javadoc comments to the methods, etc. listed in the
-      errors above.
-
-   2) You can update current.txt by executing the following command:
-         make update-api
-
-      To submit the revised current.txt to the main Android repository,
-      you will need approval.
-******************************
-
-
-
diff --git a/core/apicheck_msg_last.txt b/core/apicheck_msg_last.txt
deleted file mode 100644
index 2993157..0000000
--- a/core/apicheck_msg_last.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-
-******************************
-You have tried to change the API from what has been previously released in
-an SDK.  Please fix the errors listed above.
-******************************
-
-
diff --git a/core/apidiff.mk b/core/apidiff.mk
deleted file mode 100644
index 8887ea4..0000000
--- a/core/apidiff.mk
+++ /dev/null
@@ -1,180 +0,0 @@
-#
-# Copyright (C) 2017 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-##
-##
-## Common to both jdiff and javadoc
-##
-##
-
-LOCAL_IS_HOST_MODULE := $(call true-or-empty,$(LOCAL_IS_HOST_MODULE))
-ifeq ($(LOCAL_IS_HOST_MODULE),true)
-my_prefix := HOST_
-LOCAL_HOST_PREFIX :=
-else
-my_prefix := TARGET_
-endif
-
-LOCAL_MODULE_CLASS := $(strip $(LOCAL_MODULE_CLASS))
-ifndef LOCAL_MODULE_CLASS
-$(error $(LOCAL_PATH): LOCAL_MODULE_CLASS not defined)
-endif
-
-full_src_files := $(patsubst %,$(LOCAL_PATH)/%,$(LOCAL_SRC_FILES))
-out_dir := $(OUT_DOCS)/$(LOCAL_MODULE)/api_diff/current
-full_target := $(call doc-timestamp-for,$(LOCAL_MODULE)-diff)
-
-ifeq ($(LOCAL_IS_HOST_MODULE),true)
-$(full_target): PRIVATE_BOOTCLASSPATH :=
-full_java_libs := $(addprefix $(HOST_OUT_JAVA_LIBRARIES)/,\
-  $(addsuffix $(COMMON_JAVA_PACKAGE_SUFFIX),$(LOCAL_JAVA_LIBRARIES)))
-full_java_lib_deps := $(full_java_libs)
-
-else
-
-ifneq ($(LOCAL_SDK_VERSION),)
-  ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),current)
-    # Use android_stubs_current if LOCAL_SDK_VERSION is current and no TARGET_BUILD_APPS.
-    LOCAL_JAVA_LIBRARIES := android_stubs_current $(LOCAL_JAVA_LIBRARIES)
-    $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, android_stubs_current)
-  else ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),system_current)
-    LOCAL_JAVA_LIBRARIES := android_system_stubs_current $(LOCAL_JAVA_LIBRARIES)
-    $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, android_system_stubs_current)
-  else ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),test_current)
-    LOCAL_JAVA_LIBRARIES := android_test_stubs_current $(LOCAL_JAVA_LIBRARIES)
-    $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, android_test_stubs_current)
-  else
-    # TARGET_BUILD_APPS is set. Use the modules defined in prebuilts/sdk/Android.mk.
-    _module_name := $(call resolve-prebuilt-sdk-module,$(LOCAL_SDK_VERSION))
-    LOCAL_JAVA_LIBRARIES := $(_module_name) $(LOCAL_JAVA_LIBRARIES)
-    $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, $(_module_name))
-    _module_name :=
-  endif
-else
-  LOCAL_JAVA_LIBRARIES := core-oj core-libart core-simple ext framework $(LOCAL_JAVA_LIBRARIES)
-  $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, core-oj):$(call java-lib-files, core-libart):$(call java-lib-files, core-simple)
-endif  # LOCAL_SDK_VERSION
-LOCAL_JAVA_LIBRARIES := $(sort $(LOCAL_JAVA_LIBRARIES))
-
-full_java_libs := $(call java-lib-files,$(LOCAL_JAVA_LIBRARIES)) $(LOCAL_CLASSPATH)
-full_java_lib_deps := $(call java-lib-deps,$(LOCAL_JAVA_LIBRARIES)) $(LOCAL_CLASSPATH)
-endif # !LOCAL_IS_HOST_MODULE
-
-$(full_target): PRIVATE_CLASSPATH := $(subst $(space),:,$(full_java_libs))
-$(full_target): PRIVATE_DOCLAVA_CLASSPATH := $(HOST_OUT_JAVA_LIBRARIES)/jsilver$(COMMON_JAVA_PACKAGE_SUFFIX):$(HOST_OUT_JAVA_LIBRARIES)/doclava$(COMMON_JAVA_PACKAGE_SUFFIX)
-
-intermediates.COMMON := $(call local-intermediates-dir,COMMON)
-
-$(full_target): PRIVATE_SOURCE_PATH := $(call normalize-path-list,$(LOCAL_DROIDDOC_SOURCE_PATH))
-$(full_target): PRIVATE_JAVA_FILES := $(filter %.java,$(full_src_files))
-$(full_target): PRIVATE_JAVA_FILES += $(addprefix $($(my_prefix)OUT_COMMON_INTERMEDIATES)/, $(filter %.java,$(LOCAL_INTERMEDIATE_SOURCES)))
-$(full_target): PRIVATE_SOURCE_INTERMEDIATES_DIR := $(intermediates.COMMON)/src
-$(full_target): PRIVATE_SRC_LIST_FILE := $(intermediates.COMMON)/droiddoc-src-list
-
-ifneq ($(strip $(LOCAL_ADDITIONAL_JAVA_DIR)),)
-$(full_target): PRIVATE_ADDITIONAL_JAVA_DIR := $(LOCAL_ADDITIONAL_JAVA_DIR)
-endif
-
-# Lists the input files for the doc build into a text file
-# suitable for the @ syntax of javadoc.
-# $(1): the file to create
-# $(2): files to include
-# $(3): list of directories to search for java files in
-define prepare-doc-source-list
-$(hide) mkdir -p $(dir $(1))
-$(call dump-words-to-file, $(2), $(1))
-$(hide) for d in $(3) ; do find $$d -name '*.java' -and -not -name '.*' >> $(1) 2> /dev/null ; done ; true
-endef
-
-##
-##
-## jdiff only
-##
-##
-
-jdiff := \
-	$(HOST_JDK_TOOLS_JAR) \
-	$(HOST_OUT_JAVA_LIBRARIES)/jdiff$(COMMON_JAVA_PACKAGE_SUFFIX)
-
-doclava := \
-	$(HOST_JDK_TOOLS_JAR) \
-	$(HOST_OUT_JAVA_LIBRARIES)/doclava$(COMMON_JAVA_PACKAGE_SUFFIX)
-
-$(full_target): PRIVATE_NEWAPI := $(LOCAL_APIDIFF_NEWAPI)
-$(full_target): PRIVATE_OLDAPI := $(LOCAL_APIDIFF_OLDAPI)
-$(full_target): PRIVATE_OUT_DIR := $(out_dir)
-$(full_target): PRIVATE_OUT_NEWAPI := $(out_dir)/current.xml
-$(full_target): PRIVATE_OUT_OLDAPI := $(out_dir)/$(notdir $(basename $(LOCAL_APIDIFF_OLDAPI))).xml
-$(full_target): PRIVATE_DOCLETPATH := $(HOST_OUT_JAVA_LIBRARIES)/jdiff$(COMMON_JAVA_PACKAGE_SUFFIX)
-$(full_target): \
-		$(full_src_files) \
-		$(full_java_lib_deps) \
-		$(jdiff) \
-		$(doclava) \
-		$(OUT_DOCS)/$(LOCAL_MODULE)-docs-stubs.srcjar \
-		$(LOCAL_ADDITIONAL_DEPENDENCIES)
-	@echo Generating API diff: $(PRIVATE_OUT_DIR)
-	@echo   Old API: $(PRIVATE_OLDAPI)
-	@echo   New API: $(PRIVATE_NEWAPI)
-	@echo   Old XML: $(PRIVATE_OUT_OLDAPI)
-	@echo   New XML: $(PRIVATE_OUT_NEWAPI)
-	$(hide) mkdir -p $(dir $@)
-	@echo Converting API files to XML...
-	$(hide) mkdir -p $(PRIVATE_OUT_DIR)
-	$(hide) ( \
-		$(JAVA) \
-				$(addprefix -classpath ,$(PRIVATE_CLASSPATH):$(PRIVATE_DOCLAVA_CLASSPATH):$(PRIVATE_BOOTCLASSPATH):$(HOST_JDK_TOOLS_JAR)) \
-				com.google.doclava.apicheck.ApiCheck \
-				-convert2xml \
-					$(basename $(PRIVATE_NEWAPI)).txt \
-					$(basename $(PRIVATE_OUT_NEWAPI)).xml \
-	) || (rm -rf $(PRIVATE_OUT_DIR) $(PRIVATE_SRC_LIST_FILE); exit 45)
-	$(hide) ( \
-		$(JAVA) \
-				$(addprefix -classpath ,$(PRIVATE_CLASSPATH):$(PRIVATE_DOCLAVA_CLASSPATH):$(PRIVATE_BOOTCLASSPATH):$(HOST_JDK_TOOLS_JAR)) \
-				com.google.doclava.apicheck.ApiCheck \
-				-convert2xml \
-					$(basename $(PRIVATE_OLDAPI)).txt \
-					$(basename $(PRIVATE_OUT_OLDAPI)).xml \
-	) || (rm -rf $(PRIVATE_OUT_DIR) $(PRIVATE_SRC_LIST_FILE); exit 45)
-	@echo Running JDiff...
-	$(call prepare-doc-source-list,$(PRIVATE_SRC_LIST_FILE),$(PRIVATE_JAVA_FILES), \
-			$(PRIVATE_SOURCE_INTERMEDIATES_DIR) $(PRIVATE_ADDITIONAL_JAVA_DIR))
-	$(hide) ( \
-		$(JAVADOC) \
-				-encoding UTF-8 \
-				\@$(PRIVATE_SRC_LIST_FILE) \
-				-J-Xmx1600m \
-				-XDignore.symbol.file \
-				-quiet \
-				-doclet jdiff.JDiff \
-				-docletpath $(PRIVATE_DOCLETPATH) \
-				$(addprefix -bootclasspath ,$(PRIVATE_BOOTCLASSPATH)) \
-				$(addprefix -classpath ,$(PRIVATE_CLASSPATH)) \
-				-sourcepath $(PRIVATE_SOURCE_PATH)$(addprefix :,$(PRIVATE_CLASSPATH)) \
-				-d $(PRIVATE_OUT_DIR) \
-				-newapi $(notdir $(basename $(PRIVATE_OUT_NEWAPI))) \
-				-newapidir $(dir $(PRIVATE_OUT_NEWAPI)) \
-				-oldapi $(notdir $(basename $(PRIVATE_OUT_OLDAPI))) \
-				-oldapidir $(dir $(PRIVATE_OUT_OLDAPI)) \
-				-javadocnew ../../../reference/ \
-		&& touch -f $@ \
-	) || (rm -rf $(PRIVATE_OUT_DIR) $(PRIVATE_SRC_LIST_FILE); exit 45)
-
-ALL_DOCS += $(full_target)
-
-.PHONY: $(LOCAL_MODULE)-diff
-$(LOCAL_MODULE)-diff : $(full_target)
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 58495d9..5aa27ca 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -67,10 +67,12 @@
 LOCAL_DPI_FILE_STEM:=
 LOCAL_DPI_VARIANTS:=
 LOCAL_DROIDDOC_ANNOTATIONS_ZIP :=
+LOCAL_DROIDDOC_API_VERSIONS_XML :=
 LOCAL_DROIDDOC_ASSET_DIR:=
 LOCAL_DROIDDOC_CUSTOM_ASSET_DIR:=
 LOCAL_DROIDDOC_CUSTOM_TEMPLATE_DIR:=
 LOCAL_DROIDDOC_DOC_ZIP :=
+LOCAL_DROIDDOC_JDIFF_DOC_ZIP :=
 LOCAL_DROIDDOC_HTML_DIR:=
 LOCAL_DROIDDOC_OPTIONS:=
 LOCAL_DROIDDOC_SOURCE_PATH:=
diff --git a/core/config.mk b/core/config.mk
index 676f325..676bd64 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -85,6 +85,7 @@
 $(KATI_obsolete_var PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE,Set FCM Version in device manifest instead. See $(CHANGES_URL)#PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE)
 $(KATI_obsolete_var USE_CLANG_PLATFORM_BUILD,Clang is the only supported Android compiler. See $(CHANGES_URL)#USE_CLANG_PLATFORM_BUILD)
 $(KATI_obsolete_var BUILD_DROIDDOC,Droiddoc is only supported in Soong. See details on build/soong/java/droiddoc.go)
+$(KATI_obsolete_var BUILD_APIDIFF,Apidiff is only supported in Soong. See details on build/soong/java/droiddoc.go)
 $(KATI_obsolete_var \
   DEFAULT_GCC_CPP_STD_VERSION \
   HOST_GLOBAL_CFLAGS 2ND_HOST_GLOBAL_CFLAGS \
@@ -174,7 +175,6 @@
 BUILD_JAVA_LIBRARY:= $(BUILD_SYSTEM)/java_library.mk
 BUILD_STATIC_JAVA_LIBRARY:= $(BUILD_SYSTEM)/static_java_library.mk
 BUILD_HOST_JAVA_LIBRARY:= $(BUILD_SYSTEM)/host_java_library.mk
-BUILD_APIDIFF:= $(BUILD_SYSTEM)/apidiff.mk
 BUILD_COPY_HEADERS := $(BUILD_SYSTEM)/copy_headers.mk
 BUILD_NATIVE_TEST := $(BUILD_SYSTEM)/native_test.mk
 BUILD_NATIVE_BENCHMARK := $(BUILD_SYSTEM)/native_benchmark.mk
diff --git a/core/definitions.mk b/core/definitions.mk
index 7e634cb..4df4bc6 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2298,35 +2298,6 @@
 $(hide) rm -f $(dir $@)d8_input.jar
 endef
 
-# Create a mostly-empty .jar file that we'll add to later.
-# The MacOS jar tool doesn't like creating empty jar files,
-# so we need to give it something.
-# $(1) package to create
-define create-empty-package-at
-@mkdir -p $(dir $(1))
-$(hide) touch $(dir $(1))zipdummy
-$(hide) $(JAR) cf $(1) -C $(dir $(1)) zipdummy
-$(hide) zip -qd $(1) zipdummy
-$(hide) rm $(dir $(1))zipdummy
-endef
-
-# Create a mostly-empty .jar file that we'll add to later.
-# The MacOS jar tool doesn't like creating empty jar files,
-# so we need to give it something.
-define create-empty-package
-$(call create-empty-package-at,$@)
-endef
-
-# Copy an arhchive file and delete any class files and empty folders inside.
-# $(1): the source archive file.
-# $(2): the destination archive file.
-define initialize-package-file
-@mkdir -p $(dir $(2))
-$(hide) cp -f $(1) $(2)
-$(hide) zip -qd $(2) "*.class" "*/" \
-    || true # Ignore the error when nothing to delete.
-endef
-
 #TODO: we kinda want to build different asset packages for
 #      different configurations, then combine them later (or something).
 #      Per-locale, etc.
@@ -2336,8 +2307,9 @@
 #Note that the version numbers are given to aapt as simple default
 #values; applications can override these by explicitly stating
 #them in their manifest.
-define add-assets-to-package
-$(hide) $(AAPT_ASAN_OPTIONS) $(AAPT) package -u $(PRIVATE_AAPT_FLAGS) \
+# $(1) the package file
+define create-assets-package
+$(hide) $(AAPT_ASAN_OPTIONS) $(AAPT) package $(PRIVATE_AAPT_FLAGS) \
     $(addprefix -c , $(PRIVATE_PRODUCT_AAPT_CONFIG)) \
     $(addprefix --preferred-density , $(PRIVATE_PRODUCT_AAPT_PREF_CONFIG)) \
     $(addprefix -M , $(PRIVATE_ANDROID_MANIFEST)) \
@@ -2352,16 +2324,17 @@
     $(addprefix --rename-manifest-package , $(PRIVATE_MANIFEST_PACKAGE_NAME)) \
     $(addprefix --rename-instrumentation-target-package , $(PRIVATE_MANIFEST_INSTRUMENTATION_FOR)) \
     --skip-symbols-without-default-localization \
-    -F $@
+    -F $(1)
 # So that we re-run aapt when the list of input files change
 $(hide) echo $(PRIVATE_RESOURCE_LIST) >/dev/null
 endef
 
 # We need the extra blank line, so that the command will be on a separate line.
-# $(1): the ABI name
-# $(2): the list of shared libraies
+# $(1): the package
+# $(2): the ABI name
+# $(3): the list of shared libraies
 define _add-jni-shared-libs-to-package-per-abi
-$(hide) cp $(2) $(dir $@)lib/$(1)
+$(hide) cp $(3) $(dir $(1))lib/$(2)
 
 endef
 
@@ -2371,36 +2344,43 @@
 JNI_COMPRESS_FLAGS :=
 ZIPALIGN_PAGE_ALIGN_FLAGS :=
 else
-JNI_COMPRESS_FLAGS := -0
+JNI_COMPRESS_FLAGS := -L 0
 ZIPALIGN_PAGE_ALIGN_FLAGS := -p
 endif
 
-define add-jni-shared-libs-to-package
-$(hide) rm -rf $(dir $@)lib
-$(hide) mkdir -p $(addprefix $(dir $@)lib/,$(PRIVATE_JNI_SHARED_LIBRARIES_ABI))
+# $(1): the package file
+define create-jni-shared-libs-package
+rm -rf $(dir $(1))lib
+mkdir -p $(addprefix $(dir $(1))lib/,$(PRIVATE_JNI_SHARED_LIBRARIES_ABI))
 $(foreach abi,$(PRIVATE_JNI_SHARED_LIBRARIES_ABI),\
-  $(call _add-jni-shared-libs-to-package-per-abi,$(abi),\
+  $(call _add-jni-shared-libs-to-package-per-abi,$(1),$(abi),\
     $(patsubst $(abi):%,%,$(filter $(abi):%,$(PRIVATE_JNI_SHARED_LIBRARIES)))))
-$(hide) (cd $(dir $@) && zip -qrX $(JNI_COMPRESS_FLAGS) $(notdir $@) lib)
-$(hide) rm -rf $(dir $@)lib
+$(SOONG_ZIP) $(JNI_COMPRESS_FLAGS) -o $(1) -C $(dir $(1)) -D $(dir $(1))lib
+rm -rf $(dir $(1))lib
 endef
 
-#TODO: update the manifest to point to the dex file
-define add-dex-to-package
-$(call add-dex-to-package-arg,$@)
+# $(1): the jar file.
+# $(2): the classes.dex file.
+define create-dex-jar
+find $(dir $(2)) -maxdepth 1 -name "classes*.dex" | sort > $(1).lst
+$(SOONG_ZIP) -o $(1) -C $(dir $(2)) -l $(1).lst
 endef
 
-# $(1): the package file.
-define add-dex-to-package-arg
-$(hide) find $(dir $(PRIVATE_DEX_FILE)) -maxdepth 1 -name "classes*.dex" | sort | xargs zip -qjX $(1)
-endef
-
-# Add java resources added by the current module.
-# $(1) destination package
-#
+# Add java resources added by the current module to an existing package.
+# $(1) destination package.
 define add-java-resources-to
+  $(call _java-resources,$(1),u)
+endef
+
+# Add java resources added by the current module to a new jar.
+# $(1) destination jar.
+define create-java-resources-jar
+  $(call _java-resources,$(1),c)
+endef
+
+define _java-resources
 $(call dump-words-to-file, $(PRIVATE_EXTRA_JAR_ARGS), $(1).jar-arg-list)
-$(hide) $(JAR) uf $(1) @$(1).jar-arg-list
+$(hide) $(JAR) $(2)f $(1) @$(1).jar-arg-list
 @rm -f $(1).jar-arg-list
 endef
 
@@ -2415,6 +2395,12 @@
   $(JAR) uf $(1) $(call jar-args-sorted-files-in-directory,$(3))
 endef
 
+# $(1): the output resources jar.
+# $(2): the input jar
+define extract-resources-jar
+  $(ZIP2ZIP) -i $(2) -o $(1) -x '**/*.class' -x '**/*/'
+endef
+
 # Sign a package using the specified key/cert.
 #
 define sign-package
@@ -2476,10 +2462,21 @@
   echo "appcompat.sh output:" >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log && \
   art/tools/veridex/appcompat.sh --dex-file=$@ 2>&1 >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log
 endef
+appcompat-files = \
+  art/tools/veridex/appcompat.sh \
+  $(INTERNAL_PLATFORM_HIDDENAPI_WHITELIST) \
+  $(INTERNAL_PLATFORM_HIDDENAPI_LIGHT_GREYLIST) \
+  $(INTERNAL_PLATFORM_HIDDENAPI_DARK_GREYLIST) \
+  $(INTERNAL_PLATFORM_HIDDENAPI_BLACKLIST) \
+  $(HOST_OUT_EXECUTABLES)/veridex \
+  $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/core_dex_intermediates/classes.dex \
+  $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/oahl_dex_intermediates/classes.dex
 else
 appcompat-header =
 run-appcompat =
+appcompat-files =
 endif  # HOST_OS == linux
+.KATI_READONLY: appcompat-header run-appcompat appcompat-files
 
 # Remove dynamic timestamps from packages
 #
@@ -2832,6 +2829,7 @@
 $(hide) rm -f $(PRIVATE_PROGUARD_DICTIONARY)
 $(hide) $(R8_COMPAT_PROGUARD) -injars '$<' \
     --min-api $(PRIVATE_MIN_SDK_VERSION) \
+    --no-data-resources \
     --force-proguard-compatibility --output $(subst classes.dex,,$@) \
     $(PRIVATE_PROGUARD_FLAGS) \
     $(addprefix -injars , $(PRIVATE_EXTRA_INPUT_JAR)) \
@@ -3516,3 +3514,9 @@
   $(call pretty-error,Invalid characters in module stem \($(1)\): $(call _invalid-name-chars,$($(1)))))
 endef
 .KATI_READONLY := verify-module-stem
+
+$(KATI_obsolete_var \
+  create-empty-package \
+  initialize-package-file \
+  add-jni-shared-libs-to-package,\
+  These functions have been removed)
diff --git a/core/dpi_specific_apk.mk b/core/dpi_specific_apk.mk
index f32daf5..88d2fe6 100644
--- a/core/dpi_specific_apk.mk
+++ b/core/dpi_specific_apk.mk
@@ -47,21 +47,24 @@
 $(built_dpi_apk) : $(all_library_res_package_export_deps)
 $(built_dpi_apk) : $(private_key) $(certificate) $(SIGNAPK_JAR)
 $(built_dpi_apk) : $(AAPT)
+$(built_dpi_apk) : $(MERGE_ZIPS) $(SOONG_ZIP) $(ZIP2ZIP)
 $(built_dpi_apk) : $(all_res_assets) $(jni_shared_libraries) $(full_android_manifest)
 	@echo "target Package: $(PRIVATE_MODULE) ($@)"
-	$(if $(PRIVATE_SOURCE_ARCHIVE),\
-	  $(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@),\
-	  $(create-empty-package))
-	$(add-assets-to-package)
+	rm -rf $@.parts
+	mkdir -p $@.parts
+	$(call create-assets-package,$@.parts/apk.zip)
 ifneq ($(jni_shared_libraries),)
-	$(add-jni-shared-libs-to-package)
+	$(call create-jni-shared-libs-package,$@.parts/jni.zip)
 endif
 ifeq ($(full_classes_jar),)
 # We don't build jar, need to add the Java resources here.
-	$(if $(PRIVATE_EXTRA_JAR_ARGS),$(call add-java-resources-to,$@))
+	$(if $(PRIVATE_EXTRA_JAR_ARGS),$(call create-java-resources-jar,$@.parts/res.zip))
 else
-	$(add-dex-to-package)
+	$(call create-dex-jar,$@.parts/dex.zip,$(PRIVATE_DEX_FILE))
+	$(call extract-resources-jar,$@.parts/res.zip,$(PRIVATE_SOURCE_ARCHIVE))
 endif
+	$(MERGE_ZIPS) $@ $@.parts/*.zip
+	rm -rf $@.parts
 	$(sign-package)
 
 # Set up global variables to register this apk to the higher-level dependency graph.
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 779cef9..6a32ff9 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -171,10 +171,15 @@
 
 $(LOCAL_BUILT_MODULE): PRIVATE_DEX_FILE := $(built_dex)
 $(LOCAL_BUILT_MODULE): PRIVATE_SOURCE_ARCHIVE := $(full_classes_jarjar_jar)
+$(LOCAL_BUILT_MODULE): $(MERGE_ZIPS) $(SOONG_ZIP) $(ZIP2ZIP)
 $(LOCAL_BUILT_MODULE): $(built_dex) $(java_resource_sources)
 	@echo "Host Jar: $(PRIVATE_MODULE) ($@)"
-	$(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@)
-	$(add-dex-to-package)
+	rm -rf $@.parts
+	mkdir -p $@.parts
+	$(call create-dex-jar,$@.parts/dex.zip,$(PRIVATE_DEX_FILE))
+	$(call extract-resources-jar,$@.parts/res.zip,$(PRIVATE_SOURCE_ARCHIVE))
+	$(MERGE_ZIPS) -j $@ $@.parts/dex.zip $@.parts/res.zip
+	rm -rf $@.parts
 
 endif # !LOCAL_IS_STATIC_JAVA_LIBRARY
 
diff --git a/core/java_library.mk b/core/java_library.mk
index 0a70a38..5716f4c 100644
--- a/core/java_library.mk
+++ b/core/java_library.mk
@@ -65,10 +65,14 @@
 
 $(common_javalib.jar): PRIVATE_DEX_FILE := $(built_dex)
 $(common_javalib.jar): PRIVATE_SOURCE_ARCHIVE := $(full_classes_pre_proguard_jar)
+$(common_javalib.jar): $(MERGE_ZIPS) $(SOONG_ZIP) $(ZIP2ZIP)
 $(common_javalib.jar) : $(built_dex) $(java_resource_sources) | $(ZIPTIME) $(ZIPALIGN)
 	@echo "target Jar: $(PRIVATE_MODULE) ($@)"
-	$(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@.tmp)
-	$(call add-dex-to-package-arg,$@.tmp)
+	rm -rf $@.parts && mkdir -p $@.parts
+	$(call create-dex-jar,$@.parts/dex.zip,$(PRIVATE_DEX_FILE))
+	$(call extract-resources-jar,$@.parts/res.zip,$(PRIVATE_SOURCE_ARCHIVE))
+	$(MERGE_ZIPS) -j $@.tmp $@.parts/dex.zip $@.parts/res.zip
+	rm -rf $@.parts
 	$(hide) $(ZIPTIME) $@.tmp
 	$(call commit-change-for-toc,$@)
 ifeq (true, $(LOCAL_UNCOMPRESS_DEX))
diff --git a/core/package_internal.mk b/core/package_internal.mk
index 7f74cc9..42539f6 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -413,15 +413,14 @@
     resource_export_package := $(intermediates.COMMON)/package-export.apk
     $(R_file_stamp): $(resource_export_package)
 
-    # add-assets-to-package looks at PRODUCT_AAPT_CONFIG, but this target
+    # create-assets-package looks at PRODUCT_AAPT_CONFIG, but this target
     # can't know anything about PRODUCT.  Clear it out just for this target.
     $(resource_export_package): PRIVATE_PRODUCT_AAPT_CONFIG :=
     $(resource_export_package): PRIVATE_PRODUCT_AAPT_PREF_CONFIG :=
     $(resource_export_package): PRIVATE_RESOURCE_LIST := $(all_res_assets)
     $(resource_export_package): $(all_res_assets) $(full_android_manifest) $(rs_generated_res_zip) $(AAPT)
 	@echo "target Export Resources: $(PRIVATE_MODULE) ($@)"
-	$(create-empty-package)
-	$(add-assets-to-package)
+	$(call create-assets-package,$@)
   endif
 
 endif  # LOCAL_USE_AAPT2
@@ -604,14 +603,13 @@
 endif
 
 ifeq ($(module_run_appcompat),true)
-$(LOCAL_BUILT_MODULE) : $(call intermediates-dir-for,PACKAGING,veridex,HOST)/veridex.zip
+$(LOCAL_BUILT_MODULE) : $(appcompat-files)
 $(LOCAL_BUILT_MODULE): PRIVATE_INSTALLED_MODULE := $(LOCAL_INSTALLED_MODULE)
 endif
 
 $(LOCAL_BUILT_MODULE): PRIVATE_RESOURCE_INTERMEDIATES_DIR := $(intermediates.COMMON)/resources
-$(LOCAL_BUILT_MODULE): PRIVATE_FULL_CLASSES_JAR := $(full_classes_jar)
 $(LOCAL_BUILT_MODULE) : $(jni_shared_libraries)
-$(LOCAL_BUILT_MODULE) : $(JAR_ARGS)
+$(LOCAL_BUILT_MODULE) : $(JAR_ARGS) $(SOONG_ZIP) $(MERGE_ZIPS) $(ZIP2ZIP)
 ifeq ($(LOCAL_USE_AAPT2),true)
 $(LOCAL_BUILT_MODULE): PRIVATE_RES_PACKAGE := $(my_res_package)
 $(LOCAL_BUILT_MODULE) : $(my_res_package) $(AAPT2) | $(ACP)
@@ -623,26 +621,25 @@
 $(LOCAL_BUILT_MODULE) : $(MINIGZIP)
 endif
 	@echo "target Package: $(PRIVATE_MODULE) ($@)"
+	rm -rf $@.parts
+	mkdir -p $@.parts
 ifeq ($(LOCAL_USE_AAPT2),true)
-	$(call copy-file-to-new-target)
+	cp -f $< $@.parts/apk.zip
 else  # ! LOCAL_USE_AAPT2
-	$(if $(PRIVATE_SOURCE_ARCHIVE),\
-	  $(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@),\
-	  $(create-empty-package))
-	$(add-assets-to-package)
+	$(call create-assets-package,$@.parts/apk.zip)
 endif  # LOCAL_USE_AAPT2
 ifneq ($(jni_shared_libraries),)
-	$(add-jni-shared-libs-to-package)
+	$(call create-jni-shared-libs-package,$@.parts/jni.zip)
 endif
 ifeq ($(full_classes_jar),)
 # We don't build jar, need to add the Java resources here.
-	$(if $(PRIVATE_EXTRA_JAR_ARGS),$(call add-java-resources-to,$@))
+	$(if $(PRIVATE_EXTRA_JAR_ARGS),$(call create-java-resources-jar,$@.parts/res.zip))
 else  # full_classes_jar
-	$(add-dex-to-package)
-ifeq ($(LOCAL_USE_AAPT2),true)
-	$(call add-jar-resources-to-package,$@,$(PRIVATE_FULL_CLASSES_JAR),$(PRIVATE_RESOURCE_INTERMEDIATES_DIR))
-endif
+	$(call create-dex-jar,$@.parts/dex.zip,$(PRIVATE_DEX_FILE))
+	$(call extract-resources-jar,$@.parts/res.zip,$(PRIVATE_SOURCE_ARCHIVE))
 endif  # full_classes_jar
+	$(MERGE_ZIPS) $@ $@.parts/*.zip
+	rm -rf $@.parts
 ifeq (true, $(LOCAL_UNCOMPRESS_DEX))
 	@# No need to align, sign-package below will do it.
 	$(uncompress-dexs)
@@ -687,7 +684,7 @@
 # Use pattern rule - we may have multiple built odex files.
 $(built_odex) : $(dir $(LOCAL_BUILT_MODULE))% : $(built_dex)
 	$(hide) mkdir -p $(dir $@) && rm -f $@
-	$(add-dex-to-package)
+	$(call create-dex-jar,$@,$(PRIVATE_DEX_FILE))
 ifeq (true, $(LOCAL_UNCOMPRESS_DEX))
 	$(uncompress-dexs)
 	$(align-package)
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index 7d6f3a9..7c6af8a 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -348,7 +348,7 @@
 endif
 
 ifeq ($(module_run_appcompat),true)
-$(built_module) : $(call intermediates-dir-for,PACKAGING,veridex,HOST)/veridex.zip
+$(built_module) : $(appcompat-files)
 $(LOCAL_BUILT_MODULE): PRIVATE_INSTALLED_MODULE := $(LOCAL_INSTALLED_MODULE)
 endif
 
diff --git a/core/soong_app_prebuilt.mk b/core/soong_app_prebuilt.mk
index 241a2f4..68916c0 100644
--- a/core/soong_app_prebuilt.mk
+++ b/core/soong_app_prebuilt.mk
@@ -43,8 +43,6 @@
 endif # TURBINE_ENABLED != false
 
 
-$(eval $(call copy-one-file,$(LOCAL_PREBUILT_MODULE_FILE),$(LOCAL_BUILT_MODULE)))
-
 ifdef LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE
 resource_export_package := $(intermediates.COMMON)/package-export.apk
 resource_export_stamp := $(intermediates.COMMON)/src/R.stamp
@@ -61,14 +59,18 @@
 
 java-dex: $(LOCAL_SOONG_DEX_JAR)
 
-ifdef LOCAL_DEX_PREOPT
 # defines built_odex along with rule to install odex
 include $(BUILD_SYSTEM)/dex_preopt_odex_install.mk
 
-$(built_odex): $(LOCAL_SOONG_DEX_JAR)
+ifdef LOCAL_DEX_PREOPT
+  $(built_odex): $(LOCAL_SOONG_DEX_JAR)
 	$(call dexpreopt-one-file,$<,$@)
+  $(eval $(call dexpreopt-copy-jar,$(LOCAL_PREBUILT_MODULE_FILE),$(LOCAL_BUILT_MODULE),$(LOCAL_DEX_PREOPT)))
+else
+  $(eval $(call copy-one-file,$(LOCAL_PREBUILT_MODULE_FILE),$(LOCAL_BUILT_MODULE)))
 endif
 
+
 PACKAGES := $(PACKAGES) $(LOCAL_MODULE)
 ifdef LOCAL_CERTIFICATE
   PACKAGES.$(LOCAL_MODULE).CERTIFICATE := $(LOCAL_CERTIFICATE)
diff --git a/core/soong_droiddoc_prebuilt.mk b/core/soong_droiddoc_prebuilt.mk
index 510609b..08df019 100644
--- a/core/soong_droiddoc_prebuilt.mk
+++ b/core/soong_droiddoc_prebuilt.mk
@@ -23,3 +23,17 @@
 ifdef LOCAL_DROIDDOC_ANNOTATIONS_ZIP
 $(eval $(call copy-one-file,$(LOCAL_DROIDDOC_ANNOTATIONS_ZIP),$(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/$(LOCAL_MODULE)_annotations.zip))
 endif
+
+ifdef LOCAL_DROIDDOC_API_VERSIONS_XML
+$(eval $(call copy-one-file,$(LOCAL_DROIDDOC_API_VERSIONS_XML),$(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/$(LOCAL_MODULE)_generated-api-versions.xml))
+endif
+
+ifdef LOCAL_DROIDDOC_JDIFF_DOC_ZIP
+$(eval $(call copy-one-file,$(LOCAL_DROIDDOC_JDIFF_DOC_ZIP),$(OUT_DOCS)/$(LOCAL_MODULE)-jdiff-docs.zip))
+$(call dist-for-goals,docs,$(OUT_DOCS)/$(LOCAL_MODULE)-jdiff-docs.zip)
+
+ALL_DOCS += $(OUT_DOCS)/$(LOCAL_MODULE)-jdiff-docs.zip
+
+.PHONY: $(LOCAL_MODULE)-jdiff
+$(LOCAL_MODULE)-jdiff : $(OUT_DOCS)/$(LOCAL_MODULE)-jdiff-docs.zip
+endif
diff --git a/core/tasks/apidiff.mk b/core/tasks/apidiff.mk
index 4eb59af..76e4749 100644
--- a/core/tasks/apidiff.mk
+++ b/core/tasks/apidiff.mk
@@ -18,4 +18,4 @@
 
 .PHONY: api-diff
 
-api-diff: offline-sdk-referenceonly-diff
+api-diff: api-stubs-docs-jdiff