diff --git a/core/Makefile b/core/Makefile
index 706b371..002e955 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -12,9 +12,11 @@
 # The filter part means "only eval the copy-one-file rule if this
 # src:dest pair is the first one to match the same dest"
 #$(1): the src:dest pair
+#$(2): the dest
 define check-product-copy-files
-$(if $(filter %.apk, $(call word-colon, 2, $(1))),$(error \
-    Prebuilt apk found in PRODUCT_COPY_FILES: $(1), use BUILD_PREBUILT instead!))
+$(if $(filter-out $(TARGET_COPY_OUT_SYSTEM_OTHER)/%,$(2)), \
+  $(if $(filter %.apk, $(2)),$(error \
+     Prebuilt apk found in PRODUCT_COPY_FILES: $(1), use BUILD_PREBUILT instead!)))
 endef
 # filter out the duplicate <source file>:<dest file> pairs.
 unique_product_copy_files_pairs :=
@@ -26,7 +28,7 @@
 $(foreach cf,$(unique_product_copy_files_pairs), \
     $(eval _src := $(call word-colon,1,$(cf))) \
     $(eval _dest := $(call word-colon,2,$(cf))) \
-    $(call check-product-copy-files,$(cf)) \
+    $(call check-product-copy-files,$(cf),$(_dest)) \
     $(if $(filter $(unique_product_copy_files_destinations),$(_dest)), \
         $(eval product_copy_files_ignored += $(cf)), \
         $(eval _fulldest := $(call append-path,$(PRODUCT_OUT),$(_dest))) \
@@ -1492,6 +1494,25 @@
 endif
 
 # -----------------------------------------------------------------
+# Final System VINTF manifest including fragments. This is not assembled
+# on the device because it depends on everything in a given device
+# image which defines a vintf_fragment.
+
+BUILT_ASSEMBLED_SYSTEM_MANIFEST := $(PRODUCT_OUT)/verified_assembled_system_manifest.xml
+$(BUILT_ASSEMBLED_SYSTEM_MANIFEST): $(HOST_OUT_EXECUTABLES)/assemble_vintf
+$(BUILT_ASSEMBLED_SYSTEM_MANIFEST): $(BUILT_VENDOR_MATRIX)
+$(BUILT_ASSEMBLED_SYSTEM_MANIFEST): $(BUILT_SYSTEM_MANIFEST)
+$(BUILT_ASSEMBLED_SYSTEM_MANIFEST): $(FULL_SYSTEMIMAGE_DEPS)
+	@echo "Verifying system VINTF manifest."
+	PRODUCT_ENFORCE_VINTF_MANIFEST=$(PRODUCT_ENFORCE_VINTF_MANIFEST) \
+	$(HOST_OUT_EXECUTABLES)/assemble_vintf \
+		-c $(BUILT_VENDOR_MATRIX) \
+		-i $(BUILT_SYSTEM_MANIFEST) \
+		$$([ -d $(TARGET_OUT)/etc/vintf/manifest ] && \
+			find $(TARGET_OUT)/etc/vintf/manifest -type f -name "*.xml" | \
+			sed "s/^/-i /" | tr '\n' ' ') -o $@
+
+# -----------------------------------------------------------------
 # installed file list
 # Depending on anything that $(BUILT_SYSTEMIMAGE) depends on.
 # We put installed-files.txt ahead of image itself in the dependency graph
@@ -1567,6 +1588,7 @@
            exit 1 )
 endef
 
+$(BUILT_SYSTEMIMAGE): $(BUILT_ASSEMBLED_SYSTEM_MANIFEST)
 $(BUILT_SYSTEMIMAGE): $(FULL_SYSTEMIMAGE_DEPS) $(INSTALLED_FILES_FILE) $(BUILD_IMAGE_SRCS)
 	$(call build-systemimage-target,$@)
 
@@ -1981,6 +2003,32 @@
       $(ALL_PDK_FUSION_FILES)) \
     $(PDK_FUSION_SYMLINK_STAMP)
 
+# Final Vendor VINTF manifest including fragments. This is not assembled
+# on the device because it depends on everything in a given device
+# image which defines a vintf_fragment.
+ifdef BUILT_VENDOR_MANIFEST
+BUILT_ASSEMBLED_VENDOR_MANIFEST := $(PRODUCT_OUT)/verified_assembled_vendor_manifest.xml
+ifeq (true,$(strip $(PRODUCT_ENFORCE_VINTF_MANIFEST)))
+ifdef DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE
+# TODO(b/65028233): turn this on globally
+$(BUILT_ASSEMBLED_VENDOR_MANIFEST): PRIVATE_SYSTEM_ASSEMBLE_VINTF_ENV_VARS := VINTF_ENFORCE_NO_UNUSED_HALS=true
+endif # DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE
+endif # PRODUCT_ENFORCE_VINTF_MANIFEST
+$(BUILT_ASSEMBLED_VENDOR_MANIFEST): $(HOST_OUT_EXECUTABLES)/assemble_vintf
+$(BUILT_ASSEMBLED_VENDOR_MANIFEST): $(BUILT_SYSTEM_MATRIX)
+$(BUILT_ASSEMBLED_VENDOR_MANIFEST): $(BUILT_VENDOR_MANIFEST)
+$(BUILT_ASSEMBLED_VENDOR_MANIFEST): $(INTERNAL_VENDORIMAGE_FILES)
+	@echo "Verifying vendor VINTF manifest."
+	PRODUCT_ENFORCE_VINTF_MANIFEST=$(PRODUCT_ENFORCE_VINTF_MANIFEST) \
+	$(PRIVATE_SYSTEM_ASSEMBLE_VINTF_ENV_VARS) \
+	$(HOST_OUT_EXECUTABLES)/assemble_vintf \
+		-c $(BUILT_SYSTEM_MATRIX) \
+		-i $(BUILT_VENDOR_MANIFEST) \
+		$$([ -d $(TARGET_OUT_VENDOR)/etc/vintf/manifest ] && \
+			find $(TARGET_OUT_VENDOR)/etc/vintf/manifest -type f -name "*.xml" | \
+			sed "s/^/-i /" | tr '\n' ' ') -o $@
+endif # BUILT_VENDOR_MANIFEST
+
 # platform.zip depends on $(INTERNAL_VENDORIMAGE_FILES).
 $(INSTALLED_PLATFORM_ZIP) : $(INTERNAL_VENDORIMAGE_FILES)
 
@@ -2010,6 +2058,9 @@
 
 # We just build this directly to the install location.
 INSTALLED_VENDORIMAGE_TARGET := $(BUILT_VENDORIMAGE_TARGET)
+ifdef BUILT_VENDOR_MANIFEST
+$(INSTALLED_VENDORIMAGE_TARGET): $(BUILT_ASSEMBLED_VENDOR_MANIFEST)
+endif
 $(INSTALLED_VENDORIMAGE_TARGET): $(INTERNAL_USERIMAGES_DEPS) $(INTERNAL_VENDORIMAGE_FILES) $(INSTALLED_FILES_FILE_VENDOR) $(BUILD_IMAGE_SRCS) $(DEPMOD) $(BOARD_VENDOR_KERNEL_MODULES)
 	$(build-vendorimage-target)
 
@@ -2404,14 +2455,14 @@
   external/avb/test/data/atx_metadata.bin \
   external/avb/test/data/testkey_atx_psk.pem \
   external/avb/test/data/testkey_rsa4096.pem \
-  $(sort $(shell find system/update_engine/scripts -name \*.pyc -prune -o -type f -print)) \
-  $(sort $(shell find build/target/product/security -type f -name \*.x509.pem -o -name \*.pk8 -o \
+  $(sort $(shell find system/update_engine/scripts -name "*.pyc" -prune -o -type f -print)) \
+  $(sort $(shell find build/target/product/security -type f -name "*.x509.pem" -o -name "*.pk8" -o \
       -name verity_key)) \
-  $(sort $(shell find device $(wildcard vendor) -type f -name \*.pk8 -o -name verifiedboot\* -o \
-      -name \*.x509.pem -o -name oem\*.prop))
+  $(sort $(shell find device $(wildcard vendor) -type f -name "*.pk8" -o -name "verifiedboot*" -o \
+      -name "*.x509.pem" -o -name "oem*.prop"))
 
 OTATOOLS_RELEASETOOLS := \
-  $(sort $(shell find build/make/tools/releasetools -name \*.pyc -prune -o -type f))
+  $(sort $(shell find build/make/tools/releasetools -name "*.pyc" -prune -o -type f))
 
 ifeq (true,$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT))
 OTATOOLS_DEPS += \
@@ -2540,8 +2591,9 @@
 		$(HOST_OUT_EXECUTABLES)/imgdiff \
 		$(HOST_OUT_EXECUTABLES)/bsdiff \
 		$(BUILD_IMAGE_SRCS) \
-		$(HOST_OUT_EXECUTABLES)/assemble_vintf \
-		$(BUILT_VENDOR_MANIFEST) \
+		$(BUILT_ASSEMBLED_SYSTEM_MANIFEST) \
+		$(BUILT_ASSEMBLED_VENDOR_MANIFEST) \
+		$(BUILT_SYSTEM_MATRIX) \
 		$(BUILT_VENDOR_MATRIX) \
 		| $(ACP)
 	@echo "Package target files: $@"
@@ -2817,16 +2869,10 @@
 	$(hide) $(call fs_config,$(zip_root)/SYSTEM_OTHER,system/) > $(zip_root)/META/system_other_filesystem_config.txt
 endif
 	@# Metadata for compatibility verification.
-	$(hide) cp $(BUILT_SYSTEM_COMPATIBILITY_MATRIX) $(zip_root)/META/system_matrix.xml
-	$(hide) $(HOST_OUT_EXECUTABLES)/assemble_vintf \
-		-i $(BUILT_SYSTEM_MANIFEST) $$(find $(zip_root)/SYSTEM/etc/vintf/manifest -type f -name "*.xml" | \
-			sed "s/^/-i /" | tr '\n' ' ') \
-		-o $(zip_root)/META/system_manifest.xml
-ifdef BUILT_VENDOR_MANIFEST
-	$(hide) $(HOST_OUT_EXECUTABLES)/assemble_vintf \
-		-i $(BUILT_VENDOR_MANIFEST) $$(find $(zip_root)/VENDOR/etc/vintf/manifest -type f -name "*.xml" | \
-			sed "s/^/-i /" | tr '\n' ' ') \
-		-o $(zip_root)/META/vendor_manifest.xml
+	$(hide) cp $(BUILT_SYSTEM_MATRIX) $(zip_root)/META/system_matrix.xml
+	$(hide) cp $(BUILT_ASSEMBLED_SYSTEM_MANIFEST) $(zip_root)/META/system_manifest.xml
+ifdef BUILT_ASSEMBLED_VENDOR_MANIFEST
+	$(hide) cp $(BUILT_ASSEMBLED_VENDOR_MANIFEST) $(zip_root)/META/vendor_manifest.xml
 endif
 ifdef BUILT_VENDOR_MATRIX
 	$(hide) cp $(BUILT_VENDOR_MATRIX) $(zip_root)/META/vendor_matrix.xml
diff --git a/core/aapt2.mk b/core/aapt2.mk
index 109bb39..4385b4d 100644
--- a/core/aapt2.mk
+++ b/core/aapt2.mk
@@ -66,6 +66,8 @@
 
 my_static_library_resources := $(foreach l, $(call reverse-list,$(LOCAL_STATIC_ANDROID_LIBRARIES)),\
   $(call intermediates-dir-for,JAVA_LIBRARIES,$(l),,COMMON)/package-res.apk)
+my_static_library_extra_packages := $(foreach l, $(call reverse-list,$(LOCAL_STATIC_ANDROID_LIBRARIES)),\
+  $(call intermediates-dir-for,JAVA_LIBRARIES,$(l),,COMMON)/extra_packages)
 my_shared_library_resources := $(foreach l, $(LOCAL_SHARED_ANDROID_LIBRARIES),\
   $(call intermediates-dir-for,JAVA_LIBRARIES,$(l),,COMMON)/package-res.apk)
 
@@ -81,6 +83,8 @@
 my_srcjar := $(intermediates.COMMON)/aapt2.srcjar
 LOCAL_SRCJARS += $(my_srcjar)
 
+aapt_extra_packages := $(intermediates.COMMON)/extra_packages
+
 $(my_res_package): PRIVATE_RES_FLAT := $(my_res_resources_flat)
 $(my_res_package): PRIVATE_OVERLAY_FLAT := $(my_static_library_resources) $(my_resources_flata) $(my_overlay_resources_flat)
 $(my_res_package): PRIVATE_SHARED_ANDROID_LIBRARIES := $(my_shared_library_resources)
@@ -88,7 +92,9 @@
 $(my_res_package): PRIVATE_ASSET_DIRS := $(my_asset_dirs)
 $(my_res_package): PRIVATE_JAVA_GEN_DIR := $(intermediates.COMMON)/aapt2
 $(my_res_package): PRIVATE_SRCJAR := $(my_srcjar)
-$(my_res_package): .KATI_IMPLICIT_OUTPUTS := $(my_srcjar)
+$(my_res_package): PRIVATE_STATIC_LIBRARY_EXTRA_PACKAGES := $(my_static_library_extra_packages)
+$(my_res_package): PRIVATE_AAPT_EXTRA_PACKAGES := $(aapt_extra_packages)
+$(my_res_package): .KATI_IMPLICIT_OUTPUTS := $(my_srcjar) $(aapt_extra_packages)
 
 ifdef R_file_stamp
 $(my_res_package): PRIVATE_R_FILE_STAMP := $(R_file_stamp)
@@ -112,8 +118,8 @@
 $(my_res_package): $(full_android_manifest) $(my_static_library_resources) $(my_shared_library_resources)
 $(my_res_package): $(my_full_asset_paths)
 $(my_res_package): $(my_res_resources_flat) $(my_overlay_resources_flat) \
-  $(my_resources_flata) $(my_static_library_resources) \
-  $(AAPT2) $(SOONG_ZIP)
+  $(my_resources_flata) $(my_static_library_resources) $(my_static_library_extra_packages) \
+  $(AAPT2) $(SOONG_ZIP) $(EXTRACT_JAR_PACKAGES)
 	@echo "AAPT2 link $@"
 	$(call aapt2-link)
 ifdef R_file_stamp
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index eac5987..292f842 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -57,6 +57,7 @@
 LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING:=
 LOCAL_DEX_PREOPT:= # '',true,false,nostripping
 LOCAL_DISABLE_AUTO_GENERATE_TEST_CONFIG:=
+LOCAL_DISABLE_RESOLVE_SUPPORT_LIBRARIES:=
 LOCAL_DONT_CHECK_MODULE:=
 # Don't delete the META_INF dir when merging static Java libraries.
 LOCAL_DONT_DELETE_JAR_META_INF:=
@@ -244,6 +245,7 @@
 LOCAL_SOONG_PROGUARD_DICT :=
 LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE :=
 LOCAL_SOONG_RRO_DIRS :=
+LOCAL_SOONG_STATIC_LIBRARY_EXTRA_PACKAGES :=
 LOCAL_DROIDDOC_STUBS_SRCJAR :=
 LOCAL_DROIDDOC_DOC_ZIP :=
 # '',true
diff --git a/core/config.mk b/core/config.mk
index b07e9c2..713760f 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -92,13 +92,17 @@
 UNAME := $(shell uname -sm)
 
 SRC_TARGET_DIR := $(TOPDIR)build/target
-SRC_API_DIR := $(TOPDIR)prebuilts/sdk/api
 SRC_SYSTEM_API_DIR := $(TOPDIR)prebuilts/sdk/system-api
 SRC_TEST_API_DIR := $(TOPDIR)prebuilts/sdk/test-api
 
 # Some specific paths to tools
 SRC_DROIDDOC_DIR := $(TOPDIR)build/make/tools/droiddoc
 
+# Mark some inputs as readonly
+ifdef TARGET_DEVICE_DIR
+  .KATI_READONLY := TARGET_DEVICE_DIR
+endif
+
 # Set up efficient math functions which are used in make.
 # Here since this file is included by envsetup as well as during build.
 include $(BUILD_SYSTEM)/math.mk
@@ -106,6 +110,9 @@
 # Various mappings to avoid hard-coding paths all over the place
 include $(BUILD_SYSTEM)/pathmap.mk
 
+# Allow projects to define their own globally-available variables
+include $(BUILD_SYSTEM)/project_definitions.mk
+
 # ###############################################################
 # Build system internal files
 # ###############################################################
@@ -960,6 +967,10 @@
 SUPPORT_LIBRARY_ROOT := frameworks/support
 endif
 
+get-sdk-version = $(if $(findstring _,$(1)),$(subst core_,,$(subst system_,,$(subst test_,,$(1)))),$(1))
+get-sdk-api = $(if $(findstring _,$(1)),$(patsubst %_$(call get-sdk-version,$(1)),%,$(1)),public)
+get-prebuilt-sdk-dir = $(HISTORICAL_SDK_VERSIONS_ROOT)/$(call get-sdk-version,$(1))/$(call get-sdk-api,$(1))
+
 # Resolve LOCAL_SDK_VERSION to prebuilt module name, e.g.:
 # 23 -> sdk_public_23_android
 # system_current -> sdk_system_current_android
@@ -971,11 +982,13 @@
   sdk_public_$(1)_$(or $(2),android))
 endef
 
+# Resolve LOCAL_SDK_VERSION to prebuilt android.jar
+# $(1): LOCAL_SDK_VERSION
+resolve-prebuilt-sdk-jar-path = $(call get-prebuilt-sdk-dir,$(1))/android.jar
+
 # Resolve LOCAL_SDK_VERSION to prebuilt framework.aidl
 # $(1): An sdk version (LOCAL_SDK_VERSION)
-define resolve-prebuilt-aidl-path
-$(HISTORICAL_SDK_VERSIONS_ROOT)/$(subst core_,,$(subst system_,,$(subst test_,,$(1))))/public/framework.aidl
-endef
+resolve-prebuilt-sdk-aidl-path = $(call get-prebuilt-sdk-dir,$(call get-sdk-version,$(1)))/framework.aidl
 
 # Historical SDK version N is stored in $(HISTORICAL_SDK_VERSIONS_ROOT)/N.
 # The 'current' version is whatever this source tree is.
diff --git a/core/definitions.mk b/core/definitions.mk
index 6f029e9..092a778 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2125,6 +2125,7 @@
 $(call dump-words-to-file,$(PRIVATE_OVERLAY_FLAT),$(dir $@)aapt2-flat-overlay-list)
 $(hide) $(AAPT2) link -o $@ \
   $(PRIVATE_AAPT_FLAGS) \
+  $(if $(PRIVATE_STATIC_LIBRARY_EXTRA_PACKAGES),$$(cat $(PRIVATE_STATIC_LIBRARY_EXTRA_PACKAGES))) \
   $(addprefix --manifest ,$(PRIVATE_ANDROID_MANIFEST)) \
   $(addprefix -I ,$(PRIVATE_AAPT_INCLUDES)) \
   $(addprefix -I ,$(PRIVATE_SHARED_ANDROID_LIBRARIES)) \
@@ -2143,6 +2144,7 @@
   -R \@$(dir $@)aapt2-flat-overlay-list \
   \@$(dir $@)aapt2-flat-list
 $(SOONG_ZIP) -o $(PRIVATE_SRCJAR) -C $(PRIVATE_JAVA_GEN_DIR) -D $(PRIVATE_JAVA_GEN_DIR)
+$(EXTRACT_JAR_PACKAGES) -i $(PRIVATE_SRCJAR) -o $(PRIVATE_AAPT_EXTRA_PACKAGES) --prefix '--extra-packages '
 endef
 
 ###########################################################
diff --git a/core/dex_preopt_libart.mk b/core/dex_preopt_libart.mk
index d8ab416..10522ac 100644
--- a/core/dex_preopt_libart.mk
+++ b/core/dex_preopt_libart.mk
@@ -118,7 +118,6 @@
 	@mkdir -p $(dir $@)
 	ANDROID_LOG_TAGS="*:e" $(PROFMAN) \
 		--create-profile-from=$(PRIVATE_PROFILE_INPUT_LOCATION) \
-		--skip-apk-verification \
 		$(addprefix --apk=,$(LIBART_TARGET_BOOT_DEX_FILES)) \
 		$(addprefix --dex-location=,$(LIBART_TARGET_BOOT_DEX_LOCATIONS)) \
 		--reference-profile-file=$@
diff --git a/core/dex_preopt_libart_boot.mk b/core/dex_preopt_libart_boot.mk
index 29584b1..977f852 100644
--- a/core/dex_preopt_libart_boot.mk
+++ b/core/dex_preopt_libart_boot.mk
@@ -54,11 +54,11 @@
 
 ifeq (,$(my_out_boot_image_profile_location))
 my_boot_image_flags := --image-classes=$(PRELOADED_CLASSES)
-my_boot_image_flags += $(DIRTY_IMAGE_OBJECTS_FLAGS)
 else
 my_boot_image_flags := --compiler-filter=speed-profile
 my_boot_image_flags += --profile-file=$(my_out_boot_image_profile_location)
 endif
+my_boot_image_flags += $(DIRTY_IMAGE_OBJECTS_FLAGS)
 
 ifneq (addresstrue,$(SANITIZE_TARGET)$(SANITIZE_LITE))
 # Skip recompiling the boot image for the second sanitization phase. We'll get separate paths
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index c257f93..089df6f 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -91,23 +91,32 @@
 built_installed_odex :=
 built_installed_vdex :=
 built_installed_art :=
+my_process_profile :=
+my_profile_is_text_listing :=
 
 ifeq (false,$(WITH_DEX_PREOPT_GENERATE_PROFILE))
 LOCAL_DEX_PREOPT_GENERATE_PROFILE := false
 endif
 
 ifndef LOCAL_DEX_PREOPT_GENERATE_PROFILE
+
+
 # If LOCAL_DEX_PREOPT_GENERATE_PROFILE is not defined, default it based on the existence of the
 # profile class listing. TODO: Use product specific directory here.
 my_classes_directory := $(PRODUCT_DEX_PREOPT_PROFILE_DIR)
-LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING := $(my_classes_directory)/$(LOCAL_MODULE).prof.txt
-ifneq (,$(wildcard $(LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING)))
-# Profile listing exists, use it to generate the profile.
-LOCAL_DEX_PREOPT_GENERATE_PROFILE := true
+LOCAL_DEX_PREOPT_PROFILE := $(my_classes_directory)/$(LOCAL_MODULE).prof
+
+ifneq (,$(wildcard $(LOCAL_DEX_PREOPT_PROFILE)))
+my_process_profile := true
+my_profile_is_text_listing := false
 endif
+else
+my_process_profile := $(LOCAL_DEX_PREOPT_GENERATE_PROFILE)
+my_profile_is_text_listing := true
+LOCAL_DEX_PREOPT_PROFILE := $(LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING)
 endif
 
-ifeq (true,$(LOCAL_DEX_PREOPT_GENERATE_PROFILE))
+ifeq (true,$(my_process_profile))
 
 ifdef LOCAL_VENDOR_MODULE
 $(call pretty-error, Internal error: profiles are not supported for vendor modules)
@@ -117,8 +126,8 @@
 endif
 endif
 
-ifndef LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING
-$(call pretty-error,Must have specified class listing (LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING))
+ifndef LOCAL_DEX_PREOPT_PROFILE
+$(call pretty-error,Must have specified class listing (LOCAL_DEX_PREOPT_PROFILE))
 endif
 ifeq (,$(dex_preopt_profile_src_file))
 $(call pretty-error, Internal error: dex_preopt_profile_src_file must be set)
@@ -129,18 +138,36 @@
 my_dex_location := $(patsubst %.gz,%,$(my_dex_location))
 $(my_built_profile): PRIVATE_BUILT_MODULE := $(dex_preopt_profile_src_file)
 $(my_built_profile): PRIVATE_DEX_LOCATION := $(my_dex_location)
-$(my_built_profile): PRIVATE_SOURCE_CLASSES := $(LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING)
-$(my_built_profile): $(LOCAL_DEX_PREOPT_PROFILE_CLASS_LISTING)
+$(my_built_profile): PRIVATE_SOURCE_CLASSES := $(LOCAL_DEX_PREOPT_PROFILE)
+$(my_built_profile): $(LOCAL_DEX_PREOPT_PROFILE)
 $(my_built_profile): $(PROFMAN)
 $(my_built_profile): $(dex_preopt_profile_src_file)
-$(my_built_profile):
+ifeq (true,$(my_profile_is_text_listing))
+# The profile is a test listing of classes (used for framework jars).
+# We need to generate the actual binary profile before being able to compile.
 	$(hide) mkdir -p $(dir $@)
 	ANDROID_LOG_TAGS="*:e" $(PROFMAN) \
 		--create-profile-from=$(PRIVATE_SOURCE_CLASSES) \
 		--apk=$(PRIVATE_BUILT_MODULE) \
 		--dex-location=$(PRIVATE_DEX_LOCATION) \
 		--reference-profile-file=$@
-dex_preopt_profile_src_file:=
+else
+# The profile is binary profile (used for apps). Run it through profman to
+# ensure the profile keys match the apk.
+$(my_built_profile):
+	$(hide) mkdir -p $(dir $@)
+	touch $@
+	ANDROID_LOG_TAGS="*:i" $(PROFMAN) \
+	  --copy-and-update-profile-key \
+		--profile-file=$(PRIVATE_SOURCE_CLASSES) \
+		--apk=$(PRIVATE_BUILT_MODULE) \
+		--dex-location=$(PRIVATE_DEX_LOCATION) \
+		--reference-profile-file=$@ \
+	|| echo "Profile out of date for $(PRIVATE_BUILT_MODULE)"
+endif
+
+my_profile_is_text_listing :=
+dex_preopt_profile_src_file :=
 
 # Remove compressed APK extension.
 my_installed_profile := $(patsubst %.gz,%,$(LOCAL_INSTALLED_MODULE)).prof
@@ -209,7 +236,7 @@
 installed_art := $(strip $(installed_art))
 
 ifdef built_odex
-ifeq (true,$(LOCAL_DEX_PREOPT_GENERATE_PROFILE))
+ifeq (true,$(my_process_profile))
 $(built_odex): $(my_built_profile)
 $(built_odex): PRIVATE_PROFILE_PREOPT_FLAGS := --profile-file=$(my_built_profile)
 else
@@ -244,7 +271,7 @@
       # 'speed' compiler filter.
       LOCAL_DEX_PREOPT_FLAGS += --compiler-filter=speed
     else
-      ifeq (true,$(LOCAL_DEX_PREOPT_GENERATE_PROFILE))
+      ifeq (true,$(my_process_profile))
         # For non system server jars, use speed-profile when we have a profile.
         LOCAL_DEX_PREOPT_FLAGS += --compiler-filter=speed-profile
       else
@@ -364,4 +391,6 @@
 ALL_MODULES.$(my_register_name).INSTALLED += $(my_installed_profile)
 ALL_MODULES.$(my_register_name).BUILT_INSTALLED += $(build_installed_profile)
 
+my_process_profile :=
+
 $(my_all_targets): $(my_installed_profile)
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 12b5869..1a36703 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -241,17 +241,26 @@
 # or under vendor/*/$(TARGET_DEVICE).  Search in both places, but
 # make sure only one exists.
 # Real boards should always be associated with an OEM vendor.
-board_config_mk := \
-	$(strip $(sort $(wildcard \
-		$(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk \
-		$(shell test -d device && find -L device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
-		$(shell test -d vendor && find -L vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
-	)))
-ifeq ($(board_config_mk),)
-  $(error No config file found for TARGET_DEVICE $(TARGET_DEVICE))
-endif
-ifneq ($(words $(board_config_mk)),1)
-  $(error Multiple board config files for TARGET_DEVICE $(TARGET_DEVICE): $(board_config_mk))
+ifdef TARGET_DEVICE_DIR
+  ifneq ($(origin TARGET_DEVICE_DIR),command line)
+    $(error TARGET_DEVICE_DIR may not be set manually)
+  endif
+  board_config_mk := $(TARGET_DEVICE_DIR)/BoardConfig.mk
+else
+  board_config_mk := \
+    $(strip $(sort $(wildcard \
+      $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk \
+      $(shell test -d device && find -L device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
+      $(shell test -d vendor && find -L vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
+    )))
+  ifeq ($(board_config_mk),)
+    $(error No config file found for TARGET_DEVICE $(TARGET_DEVICE))
+  endif
+  ifneq ($(words $(board_config_mk)),1)
+    $(error Multiple board config files for TARGET_DEVICE $(TARGET_DEVICE): $(board_config_mk))
+  endif
+  TARGET_DEVICE_DIR := $(patsubst %/,%,$(dir $(board_config_mk)))
+  .KATI_READONLY := TARGET_DEVICE_DIR
 endif
 include $(board_config_mk)
 ifeq ($(TARGET_ARCH),)
@@ -261,7 +270,6 @@
   $(warning *** Unsupported option MALLOC_IMPL defined by board config: $(board_config_mk).)
   $(error Use `MALLOC_SVELTE := true` to configure jemalloc for low-memory)
 endif
-TARGET_DEVICE_DIR := $(patsubst %/,%,$(dir $(board_config_mk)))
 board_config_mk :=
 
 ###########################################
diff --git a/core/java.mk b/core/java.mk
index 94b7bcb..ad9c71f 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -120,7 +120,7 @@
   # LOCAL_SDK_VERSION is current and no TARGET_BUILD_APPS
   aidl_preprocess_import := $(TARGET_OUT_COMMON_INTERMEDIATES)/framework.aidl
 else
-  aidl_preprocess_import := $(call resolve-prebuilt-aidl-path,$(LOCAL_SDK_VERSION))
+  aidl_preprocess_import := $(call resolve-prebuilt-sdk-aidl-path,$(LOCAL_SDK_VERSION))
 endif # not current or system_current
 else
 # build against the platform.
diff --git a/core/java_common.mk b/core/java_common.mk
index 0de8e92..2695aff 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -225,12 +225,27 @@
 
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_RMTYPEDEFS := $(LOCAL_RMTYPEDEFS)
 
+# Sanity check class path vars.
+disallowed_deps := $(foreach sdk,$(TARGET_AVAILABLE_SDK_VERSIONS),$(call resolve-prebuilt-sdk-module,$(sdk)))
+disallowed_deps += $(foreach sdk,$(TARGET_AVAILABLE_SDK_VERSIONS),\
+  $(foreach sdk_lib,$(JAVA_SDK_LIBRARIES),$(call resolve-prebuilt-sdk-module,$(sdk),$(sdk_lib))))
+bad_deps := $(filter $(disallowed_deps),$(LOCAL_JAVA_LIBRARIES) $(LOCAL_STATIC_JAVA_LIBRARIES))
+ifneq (,$(bad_deps))
+  $(call pretty-error,SDK modules should not be depended on directly. Please use LOCAL_SDK_VERSION for $(bad_deps))
+endif
+
 full_java_bootclasspath_libs :=
 empty_bootclasspath :=
 my_system_modules :=
 
 ifndef LOCAL_IS_HOST_MODULE
   sdk_libs :=
+
+  # When an sdk lib name is listed in LOCAL_JAVA_LIBRARIES, move it to LOCAL_SDK_LIBRARIES, so that
+  # it is correctly redirected to the stubs library.
+  LOCAL_SDK_LIBRARIES += $(filter $(JAVA_SDK_LIBRARIES),$(LOCAL_JAVA_LIBRARIES))
+  LOCAL_JAVA_LIBRARIES := $(filter-out $(JAVA_SDK_LIBRARIES),$(LOCAL_JAVA_LIBRARIES))
+
   ifeq ($(LOCAL_SDK_VERSION),)
     ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
       # No bootclasspath. But we still need "" to prevent javac from using default host bootclasspath.
@@ -244,6 +259,9 @@
       LOCAL_JAVA_LIBRARIES := $(filter-out $(TARGET_DEFAULT_BOOTCLASSPATH_LIBRARIES) $(TARGET_DEFAULT_JAVA_LIBRARIES),$(LOCAL_JAVA_LIBRARIES))
       my_system_modules := $(DEFAULT_SYSTEM_MODULES)
     endif  # LOCAL_NO_STANDARD_LIBRARIES
+    # When SDK libraries are referenced from modules built without SDK, provide the system stub to them
+    # because it has the largest API surface.
+    sdk_libs := $(foreach lib_name,$(LOCAL_SDK_LIBRARIES),$(lib_name).stubs.system)
   else
     ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
       $(call pretty-error,Must not define both LOCAL_NO_STANDARD_LIBRARIES and LOCAL_SDK_VERSION)
@@ -252,22 +270,30 @@
       $(call pretty-error,Invalid LOCAL_SDK_VERSION '$(LOCAL_SDK_VERSION)' \
              Choices are: $(TARGET_AVAILABLE_SDK_VERSIONS))
     endif
-    ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),current)
-      # LOCAL_SDK_VERSION is current and no TARGET_BUILD_APPS.
-      full_java_bootclasspath_libs := $(call java-lib-header-files,android_stubs_current)
-    else ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),system_current)
-      full_java_bootclasspath_libs := $(call java-lib-header-files,android_system_stubs_current)
-    else ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),test_current)
-      full_java_bootclasspath_libs := $(call java-lib-header-files,android_test_stubs_current)
-    else ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),core_current)
-      full_java_bootclasspath_libs := $(call java-lib-header-files,core.current.stubs)
-    else
-      # TARGET_BUILD_APPS or numbered SDK. Use the modules defined in prebuilts/sdk/Android.mk.
-      _module_name := $(call resolve-prebuilt-sdk-module,$(LOCAL_SDK_VERSION))
-      full_java_bootclasspath_libs := $(call java-lib-header-files,$(_module_name))
+
+    ifneq (,$(TARGET_BUILD_APPS)$(filter-out %current,$(LOCAL_SDK_VERSION)))
+      # TARGET_BUILD_APPS mode or numbered SDK. Use prebuilt modules.
+      sdk_module := $(call resolve-prebuilt-sdk-module,$(LOCAL_SDK_VERSION))
       sdk_libs := $(foreach lib_name,$(LOCAL_SDK_LIBRARIES),$(call resolve-prebuilt-sdk-module,$(LOCAL_SDK_VERSION),$(lib_name)))
-      _module_name :=
-    endif # current, system_current, system_${VER}, test_current or core_current
+    else
+      # Note: the lib naming scheme must be kept in sync with build/soong/java/sdk_library.go.
+      sdk_lib_suffix = $(call pretty-error,sdk_lib_suffix was not set correctly)
+      ifeq (current,$(LOCAL_SDK_VERSION))
+        sdk_module := android_stubs_current
+        sdk_lib_suffix := .stubs
+      else ifeq (system_current,$(LOCAL_SDK_VERSION))
+        sdk_module := android_system_stubs_current
+        sdk_lib_suffix := .stubs.system
+      else ifeq (test_current,$(LOCAL_SDK_VERSION))
+        sdk_module := android_test_stubs_current
+        sdk_lib_suffix := .stubs.test
+      else ifeq (core_current,$(LOCAL_SDK_VERSION))
+        sdk_module := core.current.stubs
+        sdk_lib_suffix = $(call pretty-error,LOCAL_SDK_LIBRARIES not supported for LOCAL_SDK_VERSION = core_current)
+      endif
+      sdk_libs := $(foreach lib_name,$(LOCAL_SDK_LIBRARIES),$(lib_name)$(sdk_lib_suffix))
+    endif
+    full_java_bootclasspath_libs := $(call java-lib-header-files,$(sdk_module))
   endif # LOCAL_SDK_VERSION
 
   ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
diff --git a/core/package_internal.mk b/core/package_internal.mk
index fba50a1..f8e610b 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -314,6 +314,9 @@
 LOCAL_AAPT_FLAGS += --auto-add-overlay --extra-packages com.android.databinding.library
 endif  # LOCAL_DATA_BINDING
 
+# Process Support Library dependencies.
+include $(BUILD_SYSTEM)/support_libraries.mk
+
 # If the module is a compressed module, we don't pre-opt it because its final
 # installation location will be the data partition.
 ifdef LOCAL_COMPRESSED_MODULE
@@ -486,7 +489,7 @@
 else ifneq ($(filter-out current system_current test_current,$(LOCAL_SDK_RES_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_RES_VERSION))),)
 # for released sdk versions, the platform resources were built into android.jar.
 framework_res_package_export := \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/$(LOCAL_SDK_RES_VERSION)/android.jar
+    $(call resolve-prebuilt-sdk-jar-path,$(LOCAL_SDK_RES_VERSION))
 else # LOCAL_SDK_RES_VERSION
 framework_res_package_export := \
     $(call intermediates-dir-for,APPS,framework-res,,COMMON)/package-export.apk
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index ad081d5..8aa5b96 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -627,7 +627,7 @@
 ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
 ifneq ($(filter-out current system_current test_current,$(LOCAL_SDK_RES_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_RES_VERSION))),)
 framework_res_package_export := \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/$(LOCAL_SDK_RES_VERSION)/android.jar
+    $(call resolve-prebuilt-sdk-jar-path,$(LOCAL_SDK_RES_VERSION))
 else
 framework_res_package_export := \
     $(call intermediates-dir-for,APPS,framework-res,,COMMON)/package-export.apk
diff --git a/core/product.mk b/core/product.mk
index 1a15c9f..976c939 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -23,21 +23,12 @@
 # and the .mk suffix) of the product makefile, "<product_name>:" can be
 # omitted.
 
-# Search for AndroidProducts.mks in the given dir.
-# $(1): the path to the dir
-define _search-android-products-files-in-dir
-$(sort $(shell test -d $(1) && find -L $(1) \
-  -maxdepth 6 \
-  -name .git -prune \
-  -o -name AndroidProducts.mk -print))
-endef
-
 #
 # Returns the list of all AndroidProducts.mk files.
 # $(call ) isn't necessary.
 #
 define _find-android-products-files
-$(foreach d, device vendor product,$(call _search-android-products-files-in-dir,$(d))) \
+$(file <$(OUT_DIR)/.module_paths/AndroidProducts.mk.list) \
   $(SRC_TARGET_DIR)/product/AndroidProducts.mk
 endef
 
diff --git a/core/project_definitions.mk b/core/project_definitions.mk
new file mode 100644
index 0000000..5728b67
--- /dev/null
+++ b/core/project_definitions.mk
@@ -0,0 +1,24 @@
+#
+# Copyright (C) 2018 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.
+#
+
+#
+# Allow projects to define their own globally-available variables.
+#
+
+#
+# Include definitions for prebuilt SDK, if present.
+#
+-include prebuilts/sdk/current/definitions.mk
diff --git a/core/soong_config.mk b/core/soong_config.mk
index f539bc1..339cac0 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -101,7 +101,7 @@
 $(call add_json_list, CFIIncludePaths,                   $(CFI_INCLUDE_PATHS) $(PRODUCT_CFI_INCLUDE_PATHS))
 $(call add_json_list, IntegerOverflowExcludePaths,       $(INTEGER_OVERFLOW_EXCLUDE_PATHS) $(PRODUCT_INTEGER_OVERFLOW_EXCLUDE_PATHS))
 
-$(call add_json_bool, UseClangLld,                       $(filter 1 true,$(USE_CLANG_LLD)))
+$(call add_json_bool, UseClangLld,                       $(call invert_bool,$(filter 0 false,$(USE_CLANG_LLD))))
 $(call add_json_bool, ClangTidy,                         $(filter 1 true,$(WITH_TIDY)))
 $(call add_json_str,  TidyChecks,                        $(WITH_TIDY_CHECKS))
 
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index 96ff376..58735cd 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -40,22 +40,30 @@
     $(intermediates.COMMON)/jacoco-report-classes.jar)
 endif
 
-ifdef LOCAL_SOONG_EXPORT_PROGUARD_FLAGS
-  $(eval $(call copy-one-file,$(LOCAL_SOONG_EXPORT_PROGUARD_FLAGS),\
-    $(intermediates.COMMON)/export_proguard_flags))
-  $(call add-dependency,$(LOCAL_BUILT_MODULE),\
-    $(intermediates.COMMON)/export_proguard_flags)
-endif
-
 ifdef LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE
-my_res_package := $(intermediates.COMMON)/package-res.apk
+  my_res_package := $(intermediates.COMMON)/package-res.apk
 
-$(my_res_package): $(LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE)
+  $(my_res_package): $(LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE)
 	@echo "Copy: $@"
 	$(copy-file-to-target)
 
-$(call add-dependency,$(LOCAL_BUILT_MODULE),$(my_res_package))
+  $(call add-dependency,$(LOCAL_BUILT_MODULE),$(my_res_package))
 
+  my_proguard_flags := $(intermediates.COMMON)/export_proguard_flags
+  $(my_proguard_flags): $(LOCAL_SOONG_EXPORT_PROGUARD_FLAGS)
+	@echo "Export proguard flags: $@"
+	rm -f $@
+	touch $@
+	for f in $+; do \
+		echo -e "\n# including $$f" >>$@; \
+		cat $$f >>$@; \
+	done
+
+  $(call add-dependency,$(LOCAL_BUILT_MODULE),$(my_proguard_flags))
+
+  my_static_library_extra_packages := $(intermediates.COMMON)/extra_packages
+  $(eval $(call copy-one-file,$(LOCAL_SOONG_STATIC_LIBRARY_EXTRA_PACKAGES),$(my_static_library_extra_packages)))
+  $(call add-dependency,$(LOCAL_BUILT_MODULE),$(my_static_library_extra_packages))
 endif # LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE
 
 ifneq ($(TURBINE_ENABLED),false)
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index 7edf2e2..8ef28b8 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -32,6 +32,9 @@
 LOCAL_USE_AAPT2 := true
 endif
 
+# Process Support Library dependencies.
+include $(BUILD_SYSTEM)/support_libraries.mk
+
 # Hack to build static Java library with Android resource
 # See bug 5714516
 all_resources :=
@@ -107,7 +110,7 @@
 ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
 ifneq ($(filter-out current system_current test_current,$(LOCAL_SDK_RES_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_RES_VERSION))),)
 framework_res_package_export := \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/$(LOCAL_SDK_RES_VERSION)/android.jar
+    $(call resolve-prebuilt-sdk-jar-path,$(LOCAL_SDK_RES_VERSION))
 else
 framework_res_package_export := \
     $(call intermediates-dir-for,APPS,framework-res,,COMMON)/package-export.apk
diff --git a/core/support_libraries.mk b/core/support_libraries.mk
new file mode 100644
index 0000000..7538ce0
--- /dev/null
+++ b/core/support_libraries.mk
@@ -0,0 +1,53 @@
+#
+# Copyright (C) 2018 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.
+#
+
+###########################################################
+## Rules for resolving Support Library dependencies.
+##
+## The following variables may be modified:
+## - LOCAL_JAVA_LIBRARIES
+## - LOCAL_STATIC_JAVA_LIBRARIES
+## - LOCAL_SHARED_ANDROID_LIBRARIES
+## - LOCAL_STATIC_ANDROID_LIBRARIES
+###########################################################
+
+# Some projects don't work correctly yet. Allow them to skip resolution.
+ifndef LOCAL_DISABLE_RESOLVE_SUPPORT_LIBRARIES
+
+# Aggregate all requested Support Library modules.
+requested_support_libs := $(filter $(SUPPORT_LIBRARIES_JARS) $(SUPPORT_LIBRARIES_AARS), \
+    $(LOCAL_JAVA_LIBRARIES) $(LOCAL_STATIC_JAVA_LIBRARIES) \
+    $(LOCAL_SHARED_ANDROID_LIBRARIES) $(LOCAL_STATIC_ANDROID_LIBRARIES))
+
+# Filter the Support Library modules out of the library variables. We don't
+# trust developers to get these right, so they will be added back by the
+# build system based on the output of this file and the type of build.
+LOCAL_JAVA_LIBRARIES := $(filter-out $(requested_support_libs), \
+    $(LOCAL_JAVA_LIBRARIES))
+LOCAL_STATIC_JAVA_LIBRARIES := $(filter-out $(requested_support_libs), \
+    $(LOCAL_STATIC_JAVA_LIBRARIES))
+LOCAL_SHARED_ANDROID_LIBRARIES := $(filter-out $(requested_support_libs), \
+    $(LOCAL_SHARED_ANDROID_LIBRARIES))
+LOCAL_STATIC_ANDROID_LIBRARIES := $(filter-out $(requested_support_libs), \
+    $(LOCAL_STATIC_ANDROID_LIBRARIES))
+
+LOCAL_STATIC_ANDROID_LIBRARIES := $(strip $(LOCAL_STATIC_ANDROID_LIBRARIES) \
+    $(filter $(SUPPORT_LIBRARIES_AARS),$(requested_support_libs)))
+LOCAL_STATIC_JAVA_LIBRARIES := $(strip $(LOCAL_STATIC_JAVA_LIBRARIES) \
+    $(filter $(SUPPORT_LIBRARIES_JARS),$(requested_support_libs)))
+
+endif #LOCAL_DISABLE_RESOLVE_SUPPORT_LIBRARIES
+LOCAL_DISABLE_RESOLVE_SUPPORT_LIBRARIES :=
diff --git a/core/tasks/apicheck.mk b/core/tasks/apicheck.mk
index 1d867d1..1a1a12c 100644
--- a/core/tasks/apicheck.mk
+++ b/core/tasks/apicheck.mk
@@ -25,11 +25,14 @@
 # Run the checkapi rules by default.
 droidcore: checkapi
 
-last_released_sdk_version := $(lastword $(call numerically_sort, \
-            $(filter-out current, \
-                $(patsubst $(SRC_API_DIR)/%.txt,%, $(wildcard $(SRC_API_DIR)/*.txt)) \
-             )\
-        ))
+last_released_sdk_version := \
+    $(lastword $(call numerically_sort, \
+        $(patsubst \
+            $(HISTORICAL_SDK_VERSIONS_ROOT)/%/public/api/android.txt,\
+            %,\
+            $(wildcard $(HISTORICAL_SDK_VERSIONS_ROOT)/*/public/api/android.txt)\
+        ) \
+    ))
 
 .PHONY: check-public-api
 checkapi : check-public-api
@@ -45,7 +48,7 @@
 # SDK version.
 $(eval $(call check-api, \
     checkpublicapi-last, \
-    $(SRC_API_DIR)/$(last_released_sdk_version).txt, \
+    $(HISTORICAL_SDK_VERSIONS_ROOT)/$(last_released_sdk_version)/public/api/android.txt, \
     $(INTERNAL_PLATFORM_API_FILE), \
     frameworks/base/api/removed.txt, \
     $(INTERNAL_PLATFORM_REMOVED_API_FILE), \
@@ -91,7 +94,7 @@
 # SDK version.
 $(eval $(call check-api, \
     checksystemapi-last, \
-    $(SRC_SYSTEM_API_DIR)/$(last_released_sdk_version).txt, \
+    $(HISTORICAL_SDK_VERSIONS_ROOT)/$(last_released_sdk_version)/system/api/android.txt, \
     $(INTERNAL_PLATFORM_SYSTEM_API_FILE), \
     frameworks/base/api/system-removed.txt, \
     $(INTERNAL_PLATFORM_SYSTEM_REMOVED_API_FILE), \
diff --git a/core/use_lld_setup.mk b/core/use_lld_setup.mk
index 17a9e27..464726c 100644
--- a/core/use_lld_setup.mk
+++ b/core/use_lld_setup.mk
@@ -4,12 +4,17 @@
 ## Output variables: my_use_clang_lld
 #############################################################
 
-# Use LLD only if it's not disabled by LOCAL_USE_CLANG_LLD,
-# and enabled by LOCAL_USE_CLANG_LLD or USE_CLANG_LLD.
-my_use_clang_lld := false
-ifeq (,$(filter 0 false,$(LOCAL_USE_CLANG_LLD)))
-  ifneq (,$(filter 1 true,$(LOCAL_USE_CLANG_LLD) $(USE_CLANG_LLD)))
-    my_use_clang_lld := true
+# Use LLD by default.
+# Do not use LLD if LOCAL_USE_CLANG_LLD is false or 0,
+# or if LOCAL_USE_CLANG_LLD is not set and USE_CLANG_LLD is 0 or false.
+my_use_clang_lld := true
+ifneq (,$(LOCAL_USE_CLANG_LLD))
+  ifneq (,$(filter 0 false,$(LOCAL_USE_CLANG_LLD)))
+    my_use_clang_lld := false
+  endif
+else
+  ifneq (,$(filter 0 false,$(USE_CLANG_LLD)))
+    my_use_clang_lld := false
   endif
 endif
 
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 773dc24..8c36359 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -39,9 +39,9 @@
   include $(INTERNAL_BUILD_ID_MAKEFILE)
 endif
 
-DEFAULT_PLATFORM_VERSION := PPR1
-MIN_PLATFORM_VERSION := PPR1
-MAX_PLATFORM_VERSION := PPR1
+DEFAULT_PLATFORM_VERSION := QPR1
+MIN_PLATFORM_VERSION := QPR1
+MAX_PLATFORM_VERSION := QPR1
 
 ALLOWED_VERSIONS := $(call allowed-platform-versions,\
   $(MIN_PLATFORM_VERSION),\
@@ -83,10 +83,12 @@
 # in the following text file:
 # cts/tests/tests/os/assets/platform_versions.txt
 PLATFORM_VERSION.PPR1 := P
+PLATFORM_VERSION.QPR1 := Q
 
 # 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
+PLATFORM_VERSION_CODENAME.QPR1 := Q
 
 ifndef PLATFORM_VERSION
   PLATFORM_VERSION := $(PLATFORM_VERSION.$(TARGET_PLATFORM_VERSION))
diff --git a/envsetup.sh b/envsetup.sh
index 5182253..bad16e2 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -301,7 +301,6 @@
 
 function set_stuff_for_environment()
 {
-    settitle
     setpaths
     set_sequence_number
 
@@ -316,26 +315,6 @@
     export BUILD_ENV_SEQUENCE_NUMBER=13
 }
 
-function settitle()
-{
-    # This used to be opt-out with STAY_OFF_MY_LAWN, but this breaks folks
-    # actually using PROMPT_COMMAND (https://issuetracker.google.com/38402256),
-    # and the attempt to set the title doesn't do anything for the default
-    # window manager in debian right now, so switch it to opt-in for anyone
-    # who actually wants this.
-    if [ "$ANDROID_BUILD_SET_WINDOW_TITLE" = "true" ]; then
-        local arch=$(gettargetarch)
-        local product=$TARGET_PRODUCT
-        local variant=$TARGET_BUILD_VARIANT
-        local apps=$TARGET_BUILD_APPS
-        if [ -z "$apps" ]; then
-            export PROMPT_COMMAND="echo -ne \"\033]0;[${arch}-${product}-${variant}] ${USER}@${HOSTNAME}: ${PWD}\007\""
-        else
-            export PROMPT_COMMAND="echo -ne \"\033]0;[$arch $apps $variant] ${USER}@${HOSTNAME}: ${PWD}\007\""
-        fi
-    fi
-}
-
 function addcompletions()
 {
     local T dir f
@@ -352,7 +331,6 @@
 
     for f in system/core/adb/adb.bash system/core/fastboot/fastboot.bash; do
         if [ -f $f ]; then
-            echo "including $f"
             . $f
         fi
     done
diff --git a/target/product/base.mk b/target/product/base.mk
index e778e76..919c16d 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -151,6 +151,7 @@
 
 # Packages included only for eng or userdebug builds, previously debug tagged
 PRODUCT_PACKAGES_DEBUG := \
+    iotop \
     logpersist.start \
     perfprofd \
     sqlite3 \
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index b6c26bf..e8ec50e 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -1026,7 +1026,7 @@
       A string with placeholders for the metadata offset/size info, e.g.
       "payload.bin:679:343,payload_properties.txt:378:45,metadata:        ".
     """
-    return self._GetPropertyFilesString(input_zip, reserve_space=True)
+    return self.GetPropertyFilesString(input_zip, reserve_space=True)
 
   class InsufficientSpaceException(Exception):
     pass
@@ -1055,7 +1055,7 @@
       InsufficientSpaceException: If the reserved length is insufficient to hold
           the final string.
     """
-    result = self._GetPropertyFilesString(input_zip, reserve_space=False)
+    result = self.GetPropertyFilesString(input_zip, reserve_space=False)
     if len(result) > reserved_length:
       raise self.InsufficientSpaceException(
           'Insufficient reserved space: reserved={}, actual={}'.format(
@@ -1074,12 +1074,22 @@
     Raises:
       AssertionError: On finding a mismatch.
     """
-    actual = self._GetPropertyFilesString(input_zip)
+    actual = self.GetPropertyFilesString(input_zip)
     assert actual == expected, \
         "Mismatching streaming metadata: {} vs {}.".format(actual, expected)
 
-  def _GetPropertyFilesString(self, zip_file, reserve_space=False):
-    """Constructs the property-files string per request."""
+  def GetPropertyFilesString(self, zip_file, reserve_space=False):
+    """
+    Constructs the property-files string per request.
+
+    Args:
+      zip_file: The input ZIP file.
+      reserved_length: The reserved length of the property-files string.
+
+    Returns:
+      A property-files string including the metadata offset/size info, e.g.
+      "payload.bin:679:343,payload_properties.txt:378:45,metadata:     ".
+    """
 
     def ComputeEntryOffsetSize(name):
       """Computes the zip entry offset and size."""
diff --git a/tools/releasetools/test_ota_from_target_files.py b/tools/releasetools/test_ota_from_target_files.py
index 0eb24b5..213e830 100644
--- a/tools/releasetools/test_ota_from_target_files.py
+++ b/tools/releasetools/test_ota_from_target_files.py
@@ -774,8 +774,7 @@
     zip_file = self.construct_zip_package(entries)
     property_files = TestPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
       streaming_metadata = property_files.Finalize(zip_fp, len(raw_metadata))
     tokens = self._parse_property_files_string(streaming_metadata)
@@ -798,8 +797,7 @@
     property_files = TestPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
       # First get the raw metadata string (i.e. without padding space).
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
       raw_length = len(raw_metadata)
 
@@ -833,8 +831,7 @@
     property_files = TestPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
       # First get the raw metadata string (i.e. without padding space).
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
 
       # Should pass the test if verification passes.
@@ -891,8 +888,7 @@
     zip_file = self.construct_zip_package(entries)
     property_files = StreamingPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
       streaming_metadata = property_files.Finalize(zip_fp, len(raw_metadata))
     tokens = self._parse_property_files_string(streaming_metadata)
@@ -915,8 +911,7 @@
     property_files = StreamingPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
       # First get the raw metadata string (i.e. without padding space).
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
 
       # Should pass the test if verification passes.
@@ -1051,8 +1046,7 @@
     zip_file = self.construct_zip_package_withValidPayload(with_metadata=True)
     property_files = AbOtaPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
       property_files_string = property_files.Finalize(zip_fp, len(raw_metadata))
 
@@ -1067,8 +1061,7 @@
     zip_file = self.construct_zip_package_withValidPayload(with_metadata=True)
     property_files = AbOtaPropertyFiles()
     with zipfile.ZipFile(zip_file, 'r') as zip_fp:
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
 
       property_files.Verify(zip_fp, raw_metadata)
@@ -1101,8 +1094,7 @@
     zip_file = self.construct_zip_package(entries)
     property_files = NonAbOtaPropertyFiles()
     with zipfile.ZipFile(zip_file) as zip_fp:
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
       property_files_string = property_files.Finalize(zip_fp, len(raw_metadata))
     tokens = self._parse_property_files_string(property_files_string)
@@ -1119,8 +1111,7 @@
     zip_file = self.construct_zip_package(entries)
     property_files = NonAbOtaPropertyFiles()
     with zipfile.ZipFile(zip_file) as zip_fp:
-      # pylint: disable=protected-access
-      raw_metadata = property_files._GetPropertyFilesString(
+      raw_metadata = property_files.GetPropertyFilesString(
           zip_fp, reserve_space=False)
 
       property_files.Verify(zip_fp, raw_metadata)