diff --git a/core/base_rules.mk b/core/base_rules.mk
index ff6f5bd..2157517 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -479,6 +479,13 @@
   $(eval my_compat_dist_$(suite) += $(foreach dir, $(call compatibility_suite_dirs,$(suite)), \
     $(LOCAL_PATH)/DynamicConfig.xml:$(dir)/$(LOCAL_MODULE).dynamic)))
 endif
+
+ifneq (,$(wildcard $(LOCAL_PATH)/$(LOCAL_MODULE)_*.config))
+$(foreach extra_config, $(wildcard $(LOCAL_PATH)/$(LOCAL_MODULE)_*.config), \
+  $(foreach suite, $(LOCAL_COMPATIBILITY_SUITE), \
+    $(eval my_compat_dist_$(suite) += $(foreach dir, $(call compatibility_suite_dirs,$(suite)), \
+      $(extra_config):$(dir)/$(notdir $(extra_config))))))
+endif
 endif # $(my_prefix)$(LOCAL_MODULE_CLASS)_$(LOCAL_MODULE)_compat_files
 
 $(call create-suite-dependencies)
diff --git a/core/binary.mk b/core/binary.mk
index e28db7e..44a84aa 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -515,37 +515,6 @@
 my_asflags += -D__ASSEMBLY__
 
 ###########################################################
-## When compiling against the VNDK, use LL-NDK libraries
-###########################################################
-ifneq ($(LOCAL_USE_VNDK),)
-  ####################################################
-  ## Soong modules may be built twice, once for /system
-  ## and once for /vendor. If we're using the VNDK,
-  ## switch all soong libraries over to the /vendor
-  ## variant.
-  ####################################################
-  ifeq ($(LOCAL_MODULE_MAKEFILE),$(SOONG_ANDROID_MK))
-    # Soong-built libraries should always use the .vendor variant
-    my_whole_static_libraries := $(addsuffix .vendor,$(my_whole_static_libraries))
-    my_static_libraries := $(addsuffix .vendor,$(my_static_libraries))
-    my_shared_libraries := $(addsuffix .vendor,$(my_shared_libraries))
-    my_system_shared_libraries := $(addsuffix .vendor,$(my_system_shared_libraries))
-    my_header_libraries := $(addsuffix .vendor,$(my_header_libraries))
-  else
-    my_whole_static_libraries := $(foreach l,$(my_whole_static_libraries),\
-      $(if $(SPLIT_VENDOR.STATIC_LIBRARIES.$(l)),$(l).vendor,$(l)))
-    my_static_libraries := $(foreach l,$(my_static_libraries),\
-      $(if $(SPLIT_VENDOR.STATIC_LIBRARIES.$(l)),$(l).vendor,$(l)))
-    my_shared_libraries := $(foreach l,$(my_shared_libraries),\
-      $(if $(SPLIT_VENDOR.SHARED_LIBRARIES.$(l)),$(l).vendor,$(l)))
-    my_system_shared_libraries := $(foreach l,$(my_system_shared_libraries),\
-      $(if $(SPLIT_VENDOR.SHARED_LIBRARIES.$(l)),$(l).vendor,$(l)))
-    my_header_libraries := $(foreach l,$(my_header_libraries),\
-      $(if $(SPLIT_VENDOR.HEADER_LIBRARIES.$(l)),$(l).vendor,$(l)))
-  endif
-endif
-
-###########################################################
 ## Define PRIVATE_ variables from global vars
 ###########################################################
 ifndef LOCAL_IS_HOST_MODULE
@@ -1343,6 +1312,36 @@
 asm_objects += $(asm_objects_asm)
 endif
 
+###########################################################
+## When compiling against the VNDK, use LL-NDK libraries
+###########################################################
+ifneq ($(LOCAL_USE_VNDK),)
+  ####################################################
+  ## Soong modules may be built twice, once for /system
+  ## and once for /vendor. If we're using the VNDK,
+  ## switch all soong libraries over to the /vendor
+  ## variant.
+  ####################################################
+  ifeq ($(LOCAL_MODULE_MAKEFILE),$(SOONG_ANDROID_MK))
+    # Soong-built libraries should always use the .vendor variant
+    my_whole_static_libraries := $(addsuffix .vendor,$(my_whole_static_libraries))
+    my_static_libraries := $(addsuffix .vendor,$(my_static_libraries))
+    my_shared_libraries := $(addsuffix .vendor,$(my_shared_libraries))
+    my_system_shared_libraries := $(addsuffix .vendor,$(my_system_shared_libraries))
+    my_header_libraries := $(addsuffix .vendor,$(my_header_libraries))
+  else
+    my_whole_static_libraries := $(foreach l,$(my_whole_static_libraries),\
+      $(if $(SPLIT_VENDOR.STATIC_LIBRARIES.$(l)),$(l).vendor,$(l)))
+    my_static_libraries := $(foreach l,$(my_static_libraries),\
+      $(if $(SPLIT_VENDOR.STATIC_LIBRARIES.$(l)),$(l).vendor,$(l)))
+    my_shared_libraries := $(foreach l,$(my_shared_libraries),\
+      $(if $(SPLIT_VENDOR.SHARED_LIBRARIES.$(l)),$(l).vendor,$(l)))
+    my_system_shared_libraries := $(foreach l,$(my_system_shared_libraries),\
+      $(if $(SPLIT_VENDOR.SHARED_LIBRARIES.$(l)),$(l).vendor,$(l)))
+    my_header_libraries := $(foreach l,$(my_header_libraries),\
+      $(if $(SPLIT_VENDOR.HEADER_LIBRARIES.$(l)),$(l).vendor,$(l)))
+  endif
+endif
 
 ##########################################################
 ## Set up installed module dependency
@@ -1396,39 +1395,28 @@
 ## other NDK-built libraries
 ####################################################
 
-my_link_type := $(intermediates)/link_type
-all_link_types: $(my_link_type)
 ifdef LOCAL_SDK_VERSION
-$(my_link_type): PRIVATE_LINK_TYPE := native:ndk
-$(my_link_type): PRIVATE_WARN_TYPES :=
-$(my_link_type): PRIVATE_ALLOWED_TYPES := native:ndk
+my_link_type := native:ndk
+my_warn_types :=
+my_allowed_types := native:ndk
 else ifdef LOCAL_USE_VNDK
-$(my_link_type): PRIVATE_LINK_TYPE := native:vendor
-$(my_link_type): PRIVATE_WARN_TYPES :=
-$(my_link_type): PRIVATE_ALLOWED_TYPES := native:vendor
+my_link_type := native:vendor
+my_warn_types :=
+my_allowed_types := native:vendor
 else
-$(my_link_type): PRIVATE_LINK_TYPE := native:platform
-$(my_link_type): PRIVATE_WARN_TYPES :=
-$(my_link_type): PRIVATE_ALLOWED_TYPES := native:ndk native:platform
+my_link_type := native:platform
+my_warn_types :=
+my_allowed_types := native:ndk native:platform
 endif
-$(eval $(call link-type-partitions,$(my_link_type)))
-my_link_type_deps := $(strip \
-   $(foreach l,$(my_whole_static_libraries) $(my_static_libraries), \
-     $(call intermediates-dir-for,STATIC_LIBRARIES,$(l),$(my_kind),,$(LOCAL_2ND_ARCH_VAR_PREFIX),$(my_host_cross))/link_type))
-ifneq ($(LOCAL_MODULE_CLASS),STATIC_LIBRARIES)
-ifneq ($(LOCAL_MODULE_CLASS),HEADER_LIBRARIES)
-my_link_type_deps += $(strip \
-   $(foreach l,$(my_shared_libraries), \
-     $(call intermediates-dir-for,SHARED_LIBRARIES,$(l),$(my_kind),,$(LOCAL_2ND_ARCH_VAR_PREFIX),$(my_host_cross))/link_type))
-endif
-endif
-$(my_link_type): PRIVATE_DEPS := $(my_link_type_deps)
-$(my_link_type): PRIVATE_MODULE := $(LOCAL_MODULE)
-$(my_link_type): PRIVATE_MAKEFILE := $(LOCAL_MODULE_MAKEFILE)
-$(my_link_type): $(my_link_type_deps) $(CHECK_LINK_TYPE)
-	@echo Check module type: $@
-	$(check-link-type)
 
+my_link_deps := $(addprefix STATIC_LIBRARIES:,$(my_whole_static_libraries) $(my_static_libraries))
+ifneq ($(filter-out STATIC_LIBRARIES HEADER_LIBRARIES,$(LOCAL_MODULE_CLASS)),)
+my_link_deps += $(addprefix SHARED_LIBRARIES:,$(my_shared_libraries))
+endif
+
+my_2nd_arch_prefix := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+my_common :=
+include $(BUILD_SYSTEM)/link_type.mk
 
 ###########################################################
 ## Common object handling.
@@ -1815,7 +1803,7 @@
 .KATI_RESTAT: $(export_includes)
 
 # Make sure export_includes gets generated when you are running mm/mmm
-$(LOCAL_BUILT_MODULE) : | $(export_includes) $(my_link_type)
+$(LOCAL_BUILT_MODULE) : | $(export_includes)
 
 ifneq ($(LOCAL_MODULE_MAKEFILE),$(SOONG_ANDROID_MK))
 ifneq (,$(filter-out $(LOCAL_PATH)/%,$(my_export_c_include_dirs)))
diff --git a/core/config_sanitizers.mk b/core/config_sanitizers.mk
index d735a02..04aedf4 100644
--- a/core/config_sanitizers.mk
+++ b/core/config_sanitizers.mk
@@ -74,6 +74,12 @@
   my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
 endif
 
+# Also disable CFI if ASAN is enabled.
+ifneq ($(filter address,$(my_sanitize)),)
+  my_sanitize := $(filter-out cfi,$(my_sanitize))
+  my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
+endif
+
 # CFI needs gold linker, and mips toolchain does not have one.
 ifneq ($(filter mips mips64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
   my_sanitize := $(filter-out cfi,$(my_sanitize))
diff --git a/core/definitions.mk b/core/definitions.mk
index 72c27af..e058bc1 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -3135,44 +3135,6 @@
 endef
 
 ###########################################################
-# Link type checking
-###########################################################
-define check-link-type
-$(hide) mkdir -p $(dir $@) && rm -f $@
-$(hide) $(CHECK_LINK_TYPE) --makefile $(PRIVATE_MAKEFILE) --module $(PRIVATE_MODULE) \
-  --type "$(PRIVATE_LINK_TYPE)" $(addprefix --allowed ,$(PRIVATE_ALLOWED_TYPES)) \
-  $(addprefix --warn ,$(PRIVATE_WARN_TYPES)) $(PRIVATE_DEPS)
-$(hide) echo "$(PRIVATE_LINK_TYPE)" >$@
-endef
-
-define link-type-partitions
-ifndef LOCAL_IS_HOST_MODULE
-ifneq (true,$(LOCAL_UNINSTALLABLE_MODULE))
-ifneq ($(filter $(TARGET_OUT_VENDOR)/%,$(my_module_path)),)
-$(1): PRIVATE_LINK_TYPE += partition:vendor
-$(1): PRIVATE_WARN_TYPES += partition:data
-$(1): PRIVATE_ALLOWED_TYPES += partition:vendor partition:oem partition:odm
-else ifneq ($(filter $(TARGET_OUT_OEM)/%,$(my_module_path)),)
-$(1): PRIVATE_LINK_TYPE += partition:oem
-$(1): PRIVATE_WARN_TYPES += partition:data
-$(1): PRIVATE_ALLOWED_TYPES += partition:vendor partition:oem partition:odm
-else ifneq ($(filter $(TARGET_OUT_ODM)/%,$(my_module_path)),)
-$(1): PRIVATE_LINK_TYPE += partition:odm
-$(1): PRIVATE_WARN_TYPES += partition:data
-$(1): PRIVATE_ALLOWED_TYPES += partition:vendor partition:oem partition:odm
-else ifneq ($(filter $(TARGET_OUT_DATA)/%,$(my_module_path)),)
-$(1): PRIVATE_LINK_TYPE += partition:data
-$(1): PRIVATE_ALLOWED_TYPES += partition:data partition:vendor partition:oem partition:odm
-else
-$(1): PRIVATE_WARN_TYPES += partition:vendor partition:oem partition:odm partition:data
-endif
-else # uninstallable module
-$(1): PRIVATE_ALLOWED_TYPES += partition:vendor partition:oem partition:odm partition:data
-endif
-endif
-endef
-
-###########################################################
 # Basic math functions for positive integers <= 100
 #
 # (SDK versions for example)
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 67ac751..ba9d7eb 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -79,6 +79,20 @@
 CORRECT_BUILD_ENV_SEQUENCE_NUMBER := 13
 
 # ---------------------------------------------------------------
+# Whether we can expect a full build graph
+ALLOW_MISSING_DEPENDENCIES := $(filter true,$(ALLOW_MISSING_DEPENDENCIES))
+ifneq ($(TARGET_BUILD_APPS),)
+ALLOW_MISSING_DEPENDENCIES := true
+endif
+ifneq ($(filter true,$(SOONG_ALLOW_MISSING_DEPENDENCIES)),)
+ALLOW_MISSING_DEPENDENCIES := true
+endif
+ifneq ($(ONE_SHOT_MAKEFILE),)
+ALLOW_MISSING_DEPENDENCIES := true
+endif
+.KATI_READONLY := ALLOW_MISSING_DEPENDENCIES
+
+# ---------------------------------------------------------------
 # The product defaults to generic on hardware
 # NOTE: This will be overridden in product_config.mk if make
 # was invoked with a PRODUCT-xxx-yyy goal.
diff --git a/core/fuzz_test.mk b/core/fuzz_test.mk
index f6d6e9a..4d41871 100644
--- a/core/fuzz_test.mk
+++ b/core/fuzz_test.mk
@@ -8,8 +8,8 @@
     $(error $(LOCAL_PATH): $(LOCAL_MODULE): NDK fuzz tests are not supported.)
 endif
 
-LOCAL_CFLAGS += -fsanitize-coverage=edge,indirect-calls,8bit-counters,trace-cmp
-LOCAL_STATIC_LIBRARIES += libLLVMFuzzer
+LOCAL_CFLAGS += -fsanitize-coverage=trace-pc-guard
+LOCAL_STATIC_LIBRARIES += libFuzzer
 
 ifdef LOCAL_MODULE_PATH
 $(error $(LOCAL_PATH): Do not set LOCAL_MODULE_PATH when building test $(LOCAL_MODULE))
diff --git a/core/install_jni_libs.mk b/core/install_jni_libs.mk
index 625a8a2..35f4f55 100644
--- a/core/install_jni_libs.mk
+++ b/core/install_jni_libs.mk
@@ -18,9 +18,19 @@
 ifneq ($(filter tests samples, $(LOCAL_MODULE_TAGS)),)
 my_embed_jni := true
 endif
-ifeq ($(filter $(TARGET_OUT)/% $(TARGET_OUT_VENDOR)/% $(TARGET_OUT_OEM)/%, $(my_module_path)),)
-# If this app isn't to be installed to system partitions.
-my_embed_jni := true
+ifneq ($(BOARD_VNDK_VERSION),)
+  ifeq ($(filter $(TARGET_OUT)/%, $(my_module_path)),)
+    # If this app isn't to be installed to the system partition, and the device
+    # is fully treble-ized then jni libs are embedded, Otherwise, access to the
+    # directory where the lib is installed to (usually /vendor/lib) needs to be
+    # allowed for system processes, which is a Treble violation.
+    my_embed_jni := true
+  endif
+else
+  ifeq ($(filter $(TARGET_OUT)/% $(TARGET_OUT_VENDOR)/% $(TARGET_OUT_OEM)/%, $(my_module_path)),)
+    # If this app isn't to be installed to system, vendor, or oem partitions.
+    my_embed_jni := true
+  endif
 endif
 
 jni_shared_libraries :=
diff --git a/core/install_jni_libs_internal.mk b/core/install_jni_libs_internal.mk
index c5804a4..3898dc90 100644
--- a/core/install_jni_libs_internal.mk
+++ b/core/install_jni_libs_internal.mk
@@ -108,30 +108,18 @@
 
 # Verify that all included libraries are built against the NDK
 ifneq ($(strip $(LOCAL_JNI_SHARED_LIBRARIES)),)
-my_link_type := $(call intermediates-dir-for,APPS,$(LOCAL_MODULE))/$(my_2nd_arch_prefix)jni_link_type
-all_link_types: $(my_link_type)
-my_link_type_deps := $(strip \
-  $(foreach l,$(LOCAL_JNI_SHARED_LIBRARIES),\
-    $(call intermediates-dir-for,SHARED_LIBRARIES,$(l),,,$(my_2nd_arch_prefix))/link_type))
 ifneq ($(LOCAL_SDK_VERSION),)
-$(my_link_type): PRIVATE_LINK_TYPE := app:sdk
-$(my_link_type): PRIVATE_WARN_TYPES := native:platform
-$(my_link_type): PRIVATE_ALLOWED_TYPES := native:ndk
+my_link_type := app:sdk
+my_warn_types := native:platform
+my_allowed_types := native:ndk
 else
-$(my_link_type): PRIVATE_LINK_TYPE := app:platform
-$(my_link_type): PRIVATE_WARN_TYPES :=
-$(my_link_type): PRIVATE_ALLOWED_TYPES := native:ndk native:platform
+my_link_type := app:platform
+my_warn_types :=
+my_allowed_types := native:ndk native:platform
 endif
-$(eval $(call link-type-partitions,$(my_link_type)))
-$(my_link_type): PRIVATE_DEPS := $(my_link_type_deps)
-$(my_link_type): PRIVATE_MODULE := $(LOCAL_MODULE)
-$(my_link_type): PRIVATE_MAKEFILE := $(LOCAL_MODULE_MAKEFILE)
-$(my_link_type): $(my_link_type_deps) $(CHECK_LINK_TYPE)
-	@echo Check JNI module types: $@
-	$(check-link-type)
 
-$(LOCAL_BUILT_MODULE): | $(my_link_type)
+my_link_deps := $(addprefix SHARED_LIBRARIES:,$(LOCAL_JNI_SHARED_LIBRARIES))
 
-my_link_type :=
-my_link_type_deps :=
+my_common :=
+include $(BUILD_SYSTEM)/link_type.mk
 endif
diff --git a/core/java_common.mk b/core/java_common.mk
index 600208a..43a23df 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -396,35 +396,24 @@
 # Verify that all libraries are safe to use
 ###########################################################
 ifndef LOCAL_IS_HOST_MODULE
-my_link_type := $(intermediates.COMMON)/link_type
-all_link_types: $(my_link_type)
-my_link_type_deps := $(strip \
-  $(foreach lib,$(LOCAL_STATIC_JAVA_LIBRARIES),\
-    $(call intermediates-dir-for, \
-      JAVA_LIBRARIES,$(lib),,COMMON)/link_type) \
-  $(foreach lib,$(apk_libraries), \
-    $(call intermediates-dir-for, \
-      APPS,$(lib),,COMMON)/link_type))
 ifeq ($(LOCAL_SDK_VERSION),system_current)
-$(my_link_type): PRIVATE_LINK_TYPE := java:system
-$(my_link_type): PRIVATE_WARN_TYPES := java:platform
-$(my_link_type): PRIVATE_ALLOWED_TYPES := java:sdk java:system
+my_link_type := java:system
+my_warn_types := java:platform
+my_allowed_types := java:sdk java:system
 else ifneq ($(LOCAL_SDK_VERSION),)
-$(my_link_type): PRIVATE_LINK_TYPE := java:sdk
-$(my_link_type): PRIVATE_WARN_TYPES := java:system java:platform
-$(my_link_type): PRIVATE_ALLOWED_TYPES := java:sdk
+my_link_type := java:sdk
+my_warn_types := java:system java:platform
+my_allowed_types := java:sdk
 else
-$(my_link_type): PRIVATE_LINK_TYPE := java:platform
-$(my_link_type): PRIVATE_WARN_TYPES :=
-$(my_link_type): PRIVATE_ALLOWED_TYPES := java:sdk java:system java:platform
+my_link_type := java:platform
+my_warn_types :=
+my_allowed_types := java:sdk java:system java:platform
 endif
-$(eval $(call link-type-partitions,$(my_link_type)))
-$(my_link_type): PRIVATE_DEPS := $(my_link_type_deps)
-$(my_link_type): PRIVATE_MODULE := $(LOCAL_MODULE)
-$(my_link_type): PRIVATE_MAKEFILE := $(LOCAL_MODULE_MAKEFILE)
-$(my_link_type): $(my_link_type_deps) $(CHECK_LINK_TYPE)
-	@echo Check Java library module types: $@
-	$(check-link-type)
 
-$(LOCAL_BUILT_MODULE): $(my_link_type)
+my_link_deps := $(addprefix JAVA_LIBRARIES:,$(LOCAL_STATIC_JAVA_LIBRARIES))
+my_link_deps += $(addprefix APPS:,$(apk_libraries))
+
+my_2nd_arch_prefix := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+my_common := COMMON
+include $(BUILD_SYSTEM)/link_type.mk
 endif  # !LOCAL_IS_HOST_MODULE
diff --git a/core/link_type.mk b/core/link_type.mk
new file mode 100644
index 0000000..ff525cb
--- /dev/null
+++ b/core/link_type.mk
@@ -0,0 +1,27 @@
+# Inputs:
+#   LOCAL_MODULE_CLASS, LOCAL_MODULE, LOCAL_MODULE_MAKEFILE, LOCAL_BUILT_MODULE
+#   from base_rules.mk: my_kind, my_host_cross
+#   my_common: empty or COMMON, like the argument to intermediates-dir-for
+#   my_2nd_arch_prefix: usually LOCAL_2ND_ARCH_VAR_PREFIX, separate for JNI installation
+#
+#   my_link_type: the tags to apply to this module
+#   my_warn_types: the tags to warn about in our dependencies
+#   my_allowed_types: the tags to allow in our dependencies
+#   my_link_deps: the dependencies, in the form of <MODULE_CLASS>:<name>
+#
+
+my_link_prefix := LINK_TYPE:$(call find-idf-prefix,$(my_kind),$(my_host_cross)):$(if $(my_common),$(my_common):_,_:$(if $(my_2nd_arch_prefix),$(my_2nd_arch_prefix),_))
+link_type := $(my_link_prefix):$(LOCAL_MODULE_CLASS):$(LOCAL_MODULE)
+ALL_LINK_TYPES := $(ALL_LINK_TYPES) $(link_type)
+$(link_type).TYPE := $(my_link_type)
+$(link_type).MAKEFILE := $(LOCAL_MODULE_MAKEFILE)
+$(link_type).WARN := $(my_warn_types)
+$(link_type).ALLOWED := $(my_allowed_types)
+$(link_type).DEPS := $(addprefix $(my_link_prefix):,$(my_link_deps))
+$(link_type).BUILT := $(LOCAL_BUILT_MODULE)
+
+link_type :=
+my_allowed_types :=
+my_link_prefix :=
+my_link_type :=
+my_warn_types :=
diff --git a/core/main.mk b/core/main.mk
index 4ce5e67..4e9a901 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -726,6 +726,168 @@
 deps :=
 add-required-deps :=
 
+################################################################################
+# Link type checking
+#
+# ALL_LINK_TYPES contains a list of all link type prefixes (generally one per
+# module, but APKs can "link" to both java and native code). The link type
+# prefix consists of all the information needed by intermediates-dir-for:
+#
+#  LINK_TYPE:TARGET:_:2ND:STATIC_LIBRARIES:libfoo
+#
+#   1: LINK_TYPE literal
+#   2: prefix
+#     - TARGET
+#     - HOST
+#     - HOST_CROSS
+#     - AUX
+#   3: Whether to use the common intermediates directory or not
+#     - _
+#     - COMMON
+#   4: Whether it's the second arch or not
+#     - _
+#     - 2ND_
+#   5: Module Class
+#     - STATIC_LIBRARIES
+#     - SHARED_LIBRARIES
+#     - ...
+#   6: Module Name
+#
+# Then fields under that are separated by a period and the field name:
+#   - TYPE: the link types for this module
+#   - MAKEFILE: Where this module was defined
+#   - BUILT: The built module location
+#   - DEPS: the link type prefixes for the module's dependencies
+#   - ALLOWED: the link types to allow in this module's dependencies
+#   - WARN: the link types to warn about in this module's dependencies
+#
+# All of the dependency link types not listed in ALLOWED or WARN will become
+# errors.
+################################################################################
+
+link_type_error :=
+
+define link-type-prefix
+$(word 2,$(subst :,$(space),$(1)))
+endef
+define link-type-common
+$(patsubst _,,$(word 3,$(subst :,$(space),$(1))))
+endef
+define link-type-2ndarchprefix
+$(patsubst _,,$(word 4,$(subst :,$(space),$(1))))
+endef
+define link-type-class
+$(word 5,$(subst :,$(space),$(1)))
+endef
+define link-type-name
+$(word 6,$(subst :,$(space),$(1)))
+endef
+define link-type-os
+$(strip $(eval _p := $(link-type-prefix))\
+  $(if $(filter HOST HOST_CROSS,$(_p)),\
+    $($(_p)_OS),\
+    $(if $(filter AUX,$(_p)),AUX,android)))
+endef
+define link-type-arch
+$($(link-type-prefix)_$(link-type-2ndarchprefix)ARCH)
+endef
+define link-type-name-variant
+$(link-type-name) ($(link-type-class) $(link-type-os)-$(link-type-arch))
+endef
+
+# $(1): the prefix of the module doing the linking
+# $(2): the prefix of the linked module
+define link-type-warning
+$(shell $(call echo-warning,$($(1).MAKEFILE),"$(call link-type-name,$(1)) ($($(1).TYPE)) should not link against $(call link-type-name,$(2)) ($(3))"))
+endef
+
+# $(1): the prefix of the module doing the linking
+# $(2): the prefix of the linked module
+define link-type-error
+$(shell $(call echo-error,$($(1).MAKEFILE),"$(call link-type-name,$(1)) ($($(1).TYPE)) can not link against $(call link-type-name,$(2)) ($(3))"))\
+$(eval link_type_error := true)
+endef
+
+link-type-missing :=
+ifneq ($(ALLOW_MISSING_DEPENDENCIES),true)
+  # Print an error message if the linked-to module is missing
+  # $(1): the prefix of the module doing the linking
+  # $(2): the prefix of the missing module
+  define link-type-missing
+    $(shell $(call echo-error,$($(1).MAKEFILE),"$(call link-type-name-variant,$(1)) missing $(call link-type-name-variant,$(2))"))\
+    $(eval available_variants := $(filter %:$(call link-type-name,$(2)),$(ALL_LINK_TYPES)))\
+    $(if $(available_variants),\
+      $(info Available variants:)\
+      $(foreach v,$(available_variants),$(info $(space)$(space)$(call link-type-name-variant,$(v)))))\
+    $(info You can set ALLOW_MISSING_DEPENDENCIES=true in your environment if this is intentional, but that may defer real problems until later in the build.)\
+    $(eval link_type_error := true)
+  endef
+else
+  define link-type-missing
+    $(eval $$(1).MISSING := true)
+  endef
+endif
+
+# Verify that $(1) can link against $(2)
+# Both $(1) and $(2) are the link type prefix defined above
+define verify-link-type
+$(foreach t,$($(2).TYPE),\
+  $(if $(filter-out $($(1).ALLOWED),$(t)),\
+    $(if $(filter $(t),$($(1).WARN)),\
+      $(call link-type-warning,$(1),$(2),$(t)),\
+      $(call link-type-error,$(1),$(2),$(t)))))
+endef
+
+# TODO: Verify all branches/configs have reasonable warnings/errors, and remove
+# these overrides
+link-type-missing = $(eval $$(1).MISSING := true)
+verify-link-type = $(eval $$(1).MISSING := true)
+
+$(foreach lt,$(ALL_LINK_TYPES),\
+  $(foreach d,$($(lt).DEPS),\
+    $(if $($(d).TYPE),\
+      $(call verify-link-type,$(lt),$(d)),\
+      $(call link-type-missing,$(lt),$(d)))))
+
+ifdef link_type_error
+  $(error exiting from previous errors)
+endif
+
+# The intermediate filename for link type rules
+#
+# APPS are special -- they have up to three different rules:
+#  1. The COMMON rule for Java libraries
+#  2. The jni_link_type rule for embedded native code
+#  3. The 2ND_jni_link_type for the second architecture native code
+define link-type-file
+$(call intermediates-dir-for,$(link-type-class),$(link-type-name),$(filter AUX HOST HOST_CROSS,$(link-type-prefix)),$(link-type-common),$(link-type-2ndarchprefix),$(filter HOST_CROSS,$(link-type-prefix)))/$(if $(filter APPS,$(link-type-class)),$(if $(link-type-common),,$(link-type-2ndarchprefix)jni_))link_type
+endef
+
+# Write out the file-based link_type rules for the ALLOW_MISSING_DEPENDENCIES
+# case. We always need to write the file for mm to work, but only need to
+# check it if we weren't able to check it when reading the Android.mk files.
+define link-type-file-rule
+my_link_type_deps := $(foreach l,$($(1).DEPS),$(call link-type-file,$(l)))
+my_link_type_file := $(call link-type-file,$(1))
+$($(1).BUILT): | $$(my_link_type_file)
+$$(my_link_type_file): PRIVATE_DEPS := $$(my_link_type_deps)
+ifeq ($($(1).MISSING),true)
+$$(my_link_type_file): $(CHECK_LINK_TYPE)
+endif
+$$(my_link_type_file): $$(my_link_type_deps)
+	@echo Check module type: $$@
+	$$(hide) mkdir -p $$(dir $$@) && rm -f $$@
+ifeq ($($(1).MISSING),true)
+	$$(hide) $(CHECK_LINK_TYPE) --makefile $($(1).MAKEFILE) --module $(link-type-name) \
+	  --type "$($(1).TYPE)" $(addprefix --allowed ,$($(1).ALLOWED)) \
+	  $(addprefix --warn ,$($(1).WARN)) $$(PRIVATE_DEPS)
+endif
+	$$(hide) echo "$($(1).TYPE)" >$$@
+endef
+
+$(foreach lt,$(ALL_LINK_TYPES),\
+  $(eval $(call link-type-file-rule,$(lt))))
+
 # -------------------------------------------------------------------
 # Figure out our module sets.
 #
@@ -1140,7 +1302,4 @@
 ndk: $(SOONG_OUT_DIR)/ndk.timestamp
 .PHONY: ndk
 
-.PHONY: all_link_types
-all_link_types:
-
 endif # KATI
diff --git a/core/package.mk b/core/package.mk
index 4fe058d..f3713fc 100644
--- a/core/package.mk
+++ b/core/package.mk
@@ -4,13 +4,15 @@
 
 $(call record-module-type,PACKAGE)
 
-ifeq ($(TARGET_TRANSLATE_2ND_ARCH),true)
-LOCAL_MULTILIB := first
-endif
-
 my_prefix := TARGET_
 include $(BUILD_SYSTEM)/multilib.mk
 
+ifeq ($(TARGET_TRANSLATE_2ND_ARCH),true)
+  ifneq ($(TARGET_SUPPORTS_64_BIT_APPS)|$(my_module_multilib),|64)
+    my_module_multilib := first
+  endif
+endif
+
 ifeq ($(TARGET_SUPPORTS_32_BIT_APPS)|$(TARGET_SUPPORTS_64_BIT_APPS),true|true)
   # packages default to building for either architecture,
   # the preferred if its supported, otherwise the non-preferred.
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index 48ec340..741f0eb 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -148,21 +148,20 @@
 endif
 export_cflags :=
 
-my_link_type := $(intermediates)/link_type
 ifdef LOCAL_SDK_VERSION
-$(my_link_type): PRIVATE_LINK_TYPE := native:ndk
+my_link_type := native:ndk
 else ifdef LOCAL_USE_VNDK
-$(my_link_type): PRIVATE_LINK_TYPE := native:vendor
+my_link_type := native:vendor
 else
-$(my_link_type): PRIVATE_LINK_TYPE := native:platform
+my_link_type := native:platform
 endif
-$(eval $(call link-type-partitions,$(my_link_type)))
-$(my_link_type):
-	@echo Check module type: $@
-	$(hide) mkdir -p $(dir $@) && rm -f $@
-	$(hide) echo "$(PRIVATE_LINK_TYPE)" >$@
 
-$(LOCAL_BUILT_MODULE) : | $(export_includes) $(my_link_type)
+# TODO: check dependencies of prebuilt files
+my_link_deps :=
+
+my_2nd_arch_prefix := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+my_common :=
+include $(BUILD_SYSTEM)/link_type.mk
 endif  # prebuilt_module_is_a_library
 
 # The real dependency will be added after all Android.mks are loaded and the install paths
@@ -473,20 +472,20 @@
 $(common_classes_jar) $(common_classes_pre_proguard_jar) $(common_javalib_jar): PRIVATE_MODULE := $(LOCAL_MODULE)
 $(common_classes_jar) $(common_classes_pre_proguard_jar) $(common_javalib_jar): PRIVATE_PREFIX := $(my_prefix)
 
-my_link_type := $(intermediates.COMMON)/link_type
 ifeq ($(LOCAL_SDK_VERSION),system_current)
-$(my_link_type): PRIVATE_LINK_TYPE := java:system
+my_link_type := java:system
 else ifneq ($(LOCAL_SDK_VERSION),)
-$(my_link_type): PRIVATE_LINK_TYPE := java:sdk
+my_link_type := java:sdk
 else
-$(my_link_type): PRIVATE_LINK_TYPE := java:platform
+my_link_type := java:platform
 endif
-$(eval $(call link-type-partitions,$(my_link_type)))
-$(my_link_type):
-	@echo Check module type: $@
-	$(hide) mkdir -p $(dir $@) && rm -f $@
-	$(hide) echo "$(PRIVATE_LINK_TYPE)" >$@
-$(LOCAL_BUILT_MODULE): $(my_link_type)
+
+# TODO: check dependencies of prebuilt files
+my_link_deps :=
+
+my_2nd_arch_prefix := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+my_common := COMMON
+include $(BUILD_SYSTEM)/link_type.mk
 
 ifeq ($(prebuilt_module_is_dex_javalib),true)
 # For prebuilt shared Java library we don't have classes.jar.
diff --git a/core/soong_config.mk b/core/soong_config.mk
index cba9d84..0184598 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -38,7 +38,7 @@
 	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 $(TARGET_BUILD_APPS)$(filter true,$(SOONG_ALLOW_MISSING_DEPENDENCIES)),true,false),'; \
+	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 '    "SanitizeDeviceArch": $(call json_list,$(SANITIZE_TARGET_ARCH)),'; \
diff --git a/core/tasks/tools/package-modules.mk b/core/tasks/tools/package-modules.mk
index 4dde9fd..63fab63 100644
--- a/core/tasks/tools/package-modules.mk
+++ b/core/tasks/tools/package-modules.mk
@@ -25,6 +25,12 @@
   $(eval my_modules_and_deps += $(_explicitly_required))\
 )
 
+# Ignore unknown installed files on partial builds
+my_missing_files :=
+ifneq ($(ALLOW_MISSING_DEPENDENCIES),true)
+my_missing_files = $(shell $(call echo-warning,$(my_makefile),$(my_package_name): Unknown installed file for module '$(1)'))
+endif
+
 # Iterate over modules' built files and installed files;
 # Calculate the dest files in the output zip file.
 
@@ -34,7 +40,7 @@
   $(eval _built_files := $(strip $(ALL_MODULES.$(m).BUILT_INSTALLED)\
     $(ALL_MODULES.$(m)$(TARGET_2ND_ARCH_MODULE_SUFFIX).BUILT_INSTALLED)))\
   $(if $(_pickup_files)$(_built_files),,\
-    $(shell $(call echo-warning,$(my_makefile),$(my_package_name): Unknown installed file for module '$(m)')))\
+    $(call my_missing_files,$(m)))\
   $(eval my_pickup_files += $(_pickup_files))\
   $(foreach i, $(_built_files),\
     $(eval bui_ins := $(subst :,$(space),$(i)))\
diff --git a/target/product/product_launched_with_n_mr1.mk b/target/product/product_launched_with_n_mr1.mk
new file mode 100644
index 0000000..65d4d3f
--- /dev/null
+++ b/target/product/product_launched_with_n_mr1.mk
@@ -0,0 +1,2 @@
+#PRODUCT_SHIPPING_API_LEVEL indicates the first api level, device has been commercially launced on.
+PRODUCT_SHIPPING_API_LEVEL := 25
diff --git a/tools/warn.py b/tools/warn.py
index e786e3c..9cb115e 100755
--- a/tools/warn.py
+++ b/tools/warn.py
@@ -2463,10 +2463,11 @@
     if (FlagURL == "") return line;
     if (FlagSeparator == "") {
       return line.replace(ParseLinePattern,
-        "<a href='" + FlagURL + "/$1'>$1</a>:$2:$3");
+        "<a target='_blank' href='" + FlagURL + "/$1'>$1</a>:$2:$3");
     }
     return line.replace(ParseLinePattern,
-      "<a href='" + FlagURL + "/$1" + FlagSeparator + "$2'>$1:$2</a>:$3");
+      "<a target='_blank' href='" + FlagURL + "/$1" + FlagSeparator +
+        "$2'>$1:$2</a>:$3");
   }
   function createArrayOfDictionaries(n) {
     var result = [];