diff --git a/core/binary.mk b/core/binary.mk
index d8fda78..6a58c6c 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -290,6 +290,15 @@
 # Move other ldlibs back to shared libraries
 my_shared_libraries += $(patsubst -l%,lib%,$(filter-out $(my_allowed_ldlibs),$(my_ldlibs)))
 my_ldlibs := $(filter $(my_allowed_ldlibs),$(my_ldlibs))
+else # LOCAL_IS_HOST_MODULE
+  # Add -ldl, -lpthread and -lrt to host builds to match the default behavior of
+  # device builds
+  ifneq ($($(my_prefix)OS),windows)
+    my_ldlibs += -ldl -lpthread
+    ifneq ($(HOST_OS),darwin)
+      my_ldlibs += -lrt
+    endif
+  endif
 endif
 
 ifneq ($(LOCAL_SDK_VERSION),)
diff --git a/core/envsetup.mk b/core/envsetup.mk
index d8be9c3..c99c70f 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -200,6 +200,14 @@
 # Set up minimal BOOTCLASSPATH list of jars to build/execute
 # java code with dalvikvm/art.
 TARGET_CORE_JARS := core-oj core-libart conscrypt okhttp bouncycastle apache-xml
+ifeq ($(EMMA_INSTRUMENT),true)
+  ifneq ($(EMMA_INSTRUMENT_STATIC),true)
+    # For instrumented build, if Jacoco is not being included statically
+    # in instrumented packages then include Jacoco classes into the
+    # bootclasspath.
+    TARGET_CORE_JARS += jacocoagent
+  endif # EMMA_INSTRUMENT_STATIC
+endif # EMMA_INSTRUMENT
 HOST_CORE_JARS := $(addsuffix -hostdex,$(TARGET_CORE_JARS))
 #################################################################
 
@@ -315,29 +323,17 @@
 
 SOONG_OUT_DIR := $(OUT_DIR)/soong
 
-DEBUG_OUT_DIR := $(OUT_DIR)/debug
+TARGET_OUT_ROOT := $(OUT_DIR)/target
 
-# Move the host or target under the debug/ directory
-# if necessary.
-TARGET_OUT_ROOT_release := $(OUT_DIR)/target
-TARGET_OUT_ROOT_debug := $(DEBUG_OUT_DIR)/target
-TARGET_OUT_ROOT := $(TARGET_OUT_ROOT_$(TARGET_BUILD_TYPE))
-
-HOST_OUT_ROOT_release := $(OUT_DIR)/host
-HOST_OUT_ROOT_debug := $(DEBUG_OUT_DIR)/host
-HOST_OUT_ROOT := $(HOST_OUT_ROOT_$(HOST_BUILD_TYPE))
+HOST_OUT_ROOT := $(OUT_DIR)/host
 
 # We want to avoid two host bin directories in multilib build.
-HOST_OUT_release := $(HOST_OUT_ROOT_release)/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
-HOST_OUT_debug := $(HOST_OUT_ROOT_debug)/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
-HOST_OUT := $(HOST_OUT_$(HOST_BUILD_TYPE))
+HOST_OUT := $(HOST_OUT_ROOT)/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
 SOONG_HOST_OUT := $(SOONG_OUT_DIR)/host/$(HOST_OS)-$(HOST_PREBUILT_ARCH)
 # TODO: remove
 BUILD_OUT := $(HOST_OUT)
 
-HOST_CROSS_OUT_release := $(HOST_OUT_ROOT_release)/windows-$(HOST_PREBUILT_ARCH)
-HOST_CROSS_OUT_debug := $(HOST_OUT_ROOT_debug)/windows-$(HOST_PREBUILT_ARCH)
-HOST_CROSS_OUT := $(HOST_CROSS_OUT_$(HOST_BUILD_TYPE))
+HOST_CROSS_OUT := $(HOST_OUT_ROOT)/windows-$(HOST_PREBUILT_ARCH)
 
 TARGET_PRODUCT_OUT_ROOT := $(TARGET_OUT_ROOT)/product
 
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 241cf6e..37e9375 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -145,30 +145,30 @@
 
 $(eval $(call copy-one-file,$(full_classes_header_jarjar),$(full_classes_header_jar)))
 
+# Run jarjar if necessary, otherwise just copy the file.
+ifneq ($(strip $(LOCAL_JARJAR_RULES)),)
+$(full_classes_jarjar_jar): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
+$(full_classes_jarjar_jar): $(full_classes_compiled_jar) $(LOCAL_JARJAR_RULES) | $(JARJAR)
+	@echo JarJar: $@
+	$(hide) $(JAVA) -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
+else
+full_classes_jarjar_jar := $(full_classes_compiled_jar)
+endif
+
+$(eval $(call copy-one-file,$(full_classes_jarjar_jar),$(full_classes_jar)))
+
 my_desugaring :=
 ifeq ($(LOCAL_JAVA_LANGUAGE_VERSION),1.8)
 my_desugaring := true
 $(full_classes_desugar_jar): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
-$(full_classes_desugar_jar): $(full_classes_compiled_jar) $(full_java_header_libs) $(DESUGAR)
+$(full_classes_desugar_jar): $(full_classes_jar) $(full_java_header_libs) $(DESUGAR)
 	$(desugar-classes-jar)
 endif
 
 ifndef my_desugaring
-full_classes_desugar_jar := $(full_classes_compiled_jar)
+full_classes_desugar_jar := $(full_classes_jar)
 endif
 
-# Run jarjar if necessary, otherwise just copy the file.
-ifneq ($(strip $(LOCAL_JARJAR_RULES)),)
-$(full_classes_jarjar_jar): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
-$(full_classes_jarjar_jar): $(full_classes_desugar_jar) $(LOCAL_JARJAR_RULES) | $(JARJAR)
-	@echo JarJar: $@
-	$(hide) $(JAVA) -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
-else
-full_classes_jarjar_jar := $(full_classes_desugar_jar)
-endif
-
-$(eval $(call copy-one-file,$(full_classes_jarjar_jar),$(full_classes_jar)))
-
 ifeq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
 # No dex; all we want are the .class files with resources.
 $(LOCAL_BUILT_MODULE) : $(java_resource_sources)
@@ -179,7 +179,7 @@
 else # !LOCAL_IS_STATIC_JAVA_LIBRARY
 $(built_dex): PRIVATE_INTERMEDIATES_DIR := $(intermediates.COMMON)
 $(built_dex): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
-$(built_dex): $(full_classes_jar) $(DX)
+$(built_dex): $(full_classes_desugar_jar) $(DX)
 	$(transform-classes.jar-to-dex)
 
 $(LOCAL_BUILT_MODULE): PRIVATE_DEX_FILE := $(built_dex)
diff --git a/core/java.mk b/core/java.mk
index cc70368..4a6535c 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -18,6 +18,19 @@
 LOCAL_NO_STANDARD_LIBRARIES:=$(strip $(LOCAL_NO_STANDARD_LIBRARIES))
 LOCAL_SDK_VERSION:=$(strip $(LOCAL_SDK_VERSION))
 
+ifneq ($(LOCAL_MODULE),jacocoagent)
+  ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
+    ifeq ($(EMMA_INSTRUMENT),true)
+      ifneq ($(EMMA_INSTRUMENT_STATIC),true)
+        # For instrumented build, if Jacoco is not being included statically
+        # in instrumented packages then include Jacoco classes into the
+        # bootclasspath.
+        LOCAL_JAVA_LIBRARIES := jacocoagent $(LOCAL_JAVA_LIBRARIES)
+      endif # EMMA_INSTRUMENT_STATIC
+    endif # EMMA_INSTRUMENT
+  endif # !LOCAL_NO_STANDARD_LIBRARIES
+endif # LOCAL_MODULE == jacocoagent
+
 ifneq ($(LOCAL_SDK_VERSION),)
   ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
     $(error $(LOCAL_PATH): Must not define both LOCAL_NO_STANDARD_LIBRARIES and LOCAL_SDK_VERSION)
@@ -527,31 +540,33 @@
 full_classes_processed_jar := $(full_classes_compiled_jar)
 endif
 
+# Run jarjar if necessary
+ifneq ($(strip $(LOCAL_JARJAR_RULES)),)
+$(full_classes_jarjar_jar): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
+$(full_classes_jarjar_jar): $(full_classes_processed_jar) $(LOCAL_JARJAR_RULES) | $(JARJAR)
+	@echo JarJar: $@
+	$(hide) $(JAVA) -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
+else
+full_classes_jarjar_jar := $(full_classes_processed_jar)
+endif
+
+$(eval $(call copy-one-file,$(full_classes_jarjar_jar),$(full_classes_jar)))
+
 my_desugaring :=
 ifndef LOCAL_JACK_ENABLED
 ifndef LOCAL_IS_STATIC_JAVA_LIBRARY
 my_desugaring := true
 $(full_classes_desugar_jar): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
-$(full_classes_desugar_jar): $(full_classes_processed_jar) $(full_java_header_libs) $(DESUGAR)
+$(full_classes_desugar_jar): $(full_classes_jar) $(full_java_header_libs) $(DESUGAR)
 	$(desugar-classes-jar)
 endif
 endif
 
 ifndef my_desugaring
-full_classes_desugar_jar := $(full_classes_processed_jar)
+full_classes_desugar_jar := $(full_classes_jar)
 endif
 
-# Run jarjar if necessary
-ifneq ($(strip $(LOCAL_JARJAR_RULES)),)
-$(full_classes_jarjar_jar): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
-$(full_classes_jarjar_jar): $(full_classes_desugar_jar) $(LOCAL_JARJAR_RULES) | $(JARJAR)
-	@echo JarJar: $@
-	$(hide) $(JAVA) -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
-else
-full_classes_jarjar_jar := $(full_classes_desugar_jar)
-endif
-
-LOCAL_FULL_CLASSES_PRE_JACOCO_JAR := $(full_classes_jarjar_jar)
+LOCAL_FULL_CLASSES_PRE_JACOCO_JAR := $(full_classes_desugar_jar)
 
 #######################################
 include $(BUILD_SYSTEM)/jacoco.mk
@@ -702,8 +717,6 @@
 full_classes_proguard_jar := $(full_classes_pre_proguard_jar)
 endif # LOCAL_PROGUARD_ENABLED defined
 
-$(eval $(call copy-one-file,$(full_classes_proguard_jar),$(full_classes_jar)))
-
 ifneq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
 ifndef LOCAL_JACK_ENABLED
 $(built_dex_intermediate): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
@@ -716,7 +729,7 @@
 ifeq ($(LOCAL_EMMA_INSTRUMENT),true)
 $(built_dex_intermediate): PRIVATE_DX_FLAGS += --no-locals
 endif
-$(built_dex_intermediate): $(full_classes_jar) $(DX)
+$(built_dex_intermediate): $(full_classes_proguard_jar) $(DX)
 	$(transform-classes.jar-to-dex)
 endif # LOCAL_JACK_ENABLED is disabled
 
diff --git a/core/java_library.mk b/core/java_library.mk
index db4ccb5..f766c01 100644
--- a/core/java_library.mk
+++ b/core/java_library.mk
@@ -67,12 +67,12 @@
 ifeq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
 # There are some dependencies outside the build system that assume classes.jar
 # is available as javalib.jar so copy it there too.
-$(eval $(call copy-one-file,$(full_classes_jar),$(common_javalib.jar)))
+$(eval $(call copy-one-file,$(full_classes_proguard_jar),$(common_javalib.jar)))
 
 ifdef LOCAL_JACK_ENABLED
 $(eval $(call copy-one-file,$(full_classes_jack),$(LOCAL_BUILT_MODULE)))
 else
-$(eval $(call copy-one-file,$(full_classes_jar),$(LOCAL_BUILT_MODULE)))
+$(eval $(call copy-one-file,$(full_classes_proguard_jar),$(LOCAL_BUILT_MODULE)))
 endif
 
 else # !LOCAL_IS_STATIC_JAVA_LIBRARY
diff --git a/core/package_internal.mk b/core/package_internal.mk
index a626dde..11138db 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -122,7 +122,18 @@
   endif
 endif
 
-ifndef enforce_rro_enabled
+ifdef enforce_rro_enabled
+  ifneq ($(PRODUCT_ENFORCE_RRO_EXCLUDED_OVERLAYS),)
+    static_only_resource_overlays := $(filter $(addsuffix %,$(PRODUCT_ENFORCE_RRO_EXCLUDED_OVERLAYS)),$(package_resource_overlays))
+    ifneq ($(static_only_resource_overlays),)
+      package_resource_overlays := $(filter-out $(static_only_resource_overlays),$(package_resource_overlays))
+      LOCAL_RESOURCE_DIR := $(static_only_resource_overlays) $(LOCAL_RESOURCE_DIR)
+      ifeq ($(package_resource_overlays),)
+        enforce_rro_enabled :=
+      endif
+    endif
+  endif
+else
 LOCAL_RESOURCE_DIR := $(package_resource_overlays) $(LOCAL_RESOURCE_DIR)
 endif
 
diff --git a/core/pdk_config.mk b/core/pdk_config.mk
index 8c986d6..bef183e 100644
--- a/core/pdk_config.mk
+++ b/core/pdk_config.mk
@@ -99,9 +99,6 @@
 ifeq (true,$(TARGET_BUILD_PDK_JAVA_PLATFORM))
 
 PDK_FUSION_OUT_DIR := $(OUT_DIR)
-ifeq (debug,$(TARGET_BUILD_TYPE))
-PDK_FUSION_OUT_DIR := $(DEBUG_OUT_DIR)
-endif
 
 define JAVA_dependency_template
 $(call add-dependency,$(PDK_FUSION_OUT_DIR)/$(strip $(1)),\
diff --git a/core/product.mk b/core/product.mk
index 1a0e8c6..95e3b27 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -94,6 +94,7 @@
     PRODUCT_EXTRA_RECOVERY_KEYS \
     PRODUCT_PACKAGE_OVERLAYS \
     DEVICE_PACKAGE_OVERLAYS \
+    PRODUCT_ENFORCE_RRO_EXCLUDED_OVERLAYS \
     PRODUCT_ENFORCE_RRO_TARGETS \
     PRODUCT_SDK_ATREE_FILES \
     PRODUCT_SDK_ADDON_NAME \
diff --git a/core/product_config.mk b/core/product_config.mk
index 4194e00..6ab40c0 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -434,6 +434,10 @@
 PRODUCT_IOT := \
     $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_IOT))
 
+# Resource overlay list which must be excluded from enforcing RRO.
+PRODUCT_ENFORCE_RRO_EXCLUDED_OVERLAYS := \
+    $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_ENFORCE_RRO_EXCLUDED_OVERLAYS))
+
 # Package list to apply enforcing RRO.
 PRODUCT_ENFORCE_RRO_TARGETS := \
     $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_ENFORCE_RRO_TARGETS))
diff --git a/core/tasks/sdk-addon.mk b/core/tasks/sdk-addon.mk
index e26773c..2725f95 100644
--- a/core/tasks/sdk-addon.mk
+++ b/core/tasks/sdk-addon.mk
@@ -112,14 +112,14 @@
 	    $(ACP) -r $$d $(PRIVATE_STAGING_DIR)/docs ;\
 	  done
 	$(hide) mkdir -p $(dir $@)
-	$(hide) ( F=$$(pwd)/$@ ; cd $(PRIVATE_STAGING_DIR)/.. && zip -rqX $$F $(notdir $(PRIVATE_STAGING_DIR)) )
+	$(hide) soong_zip -o $@ -C $(dir $(PRIVATE_STAGING_DIR)) -D $(PRIVATE_STAGING_DIR)
 
 $(full_target_img): PRIVATE_STAGING_DIR := $(call append-path,$(staging),$(addon_dir_img))/images/$(TARGET_CPU_ABI)
 $(full_target_img): $(full_target) $(addon_img_source_prop) | $(ACP)
 	@echo Packaging SDK Addon System-Image: $@
 	$(hide) mkdir -p $(dir $@)
 	$(ACP) -r $(PRODUCT_OUT)/data $(PRIVATE_STAGING_DIR)/data
-	$(hide) ( F=$$(pwd)/$@ ; cd $(PRIVATE_STAGING_DIR)/.. && zip -rqX $$F $(notdir $(PRIVATE_STAGING_DIR)) )
+	$(hide) soong_zip -o $@ -C $(dir $(PRIVATE_STAGING_DIR)) -D $(PRIVATE_STAGING_DIR)
 
 
 .PHONY: sdk_addon
diff --git a/target/board/Android.mk b/target/board/Android.mk
index 5504c52..c5678d1 100644
--- a/target/board/Android.mk
+++ b/target/board/Android.mk
@@ -132,7 +132,7 @@
 
 # All kernel versions that the system image works with.
 KERNEL_VERSIONS := 3.18 4.4 4.9
-KERNEL_CONFIG_DATA := test/vts-testcase/kernel/config/data
+KERNEL_CONFIG_DATA := kernel/configs
 
 $(GEN): $(foreach version,$(KERNEL_VERSIONS),\
 	$(wildcard $(KERNEL_CONFIG_DATA)/android-$(version)/android-base*.cfg))
diff --git a/target/board/generic_arm64_ab/BoardConfig.mk b/target/board/generic_arm64_ab/BoardConfig.mk
index cf79019..99dbe9f 100644
--- a/target/board/generic_arm64_ab/BoardConfig.mk
+++ b/target/board/generic_arm64_ab/BoardConfig.mk
@@ -83,3 +83,5 @@
 # TODO(b/36764215): remove this setting when the generic system image
 # no longer has QCOM-specific directories under /.
 BOARD_SEPOLICY_DIRS += build/target/board/generic_arm64_ab/sepolicy
+
+BOARD_VNDK_VERSION := current
diff --git a/tools/atree/Android.bp b/tools/atree/Android.bp
new file mode 100644
index 0000000..3c3a8ef
--- /dev/null
+++ b/tools/atree/Android.bp
@@ -0,0 +1,13 @@
+// Copyright 2007 The Android Open Source Project
+//
+// Copies files into the directory structure described by a manifest
+
+cc_binary_host {
+    name: "atree",
+    srcs: [
+        "atree.cpp",
+        "files.cpp",
+        "fs.cpp",
+    ],
+    static_libs: ["libhost"],
+}
diff --git a/tools/atree/Android.mk b/tools/atree/Android.mk
deleted file mode 100644
index f598db5..0000000
--- a/tools/atree/Android.mk
+++ /dev/null
@@ -1,19 +0,0 @@
-# Copyright 2007 The Android Open Source Project
-#
-# Copies files into the directory structure described by a manifest
-
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
-	atree.cpp \
-	files.cpp \
-	fs.cpp
-
-LOCAL_STATIC_LIBRARIES := \
-	libhost
-
-LOCAL_MODULE := atree
-
-include $(BUILD_HOST_EXECUTABLE)
-
diff --git a/tools/fs_config/Android.bp b/tools/fs_config/Android.bp
new file mode 100644
index 0000000..797cfe2
--- /dev/null
+++ b/tools/fs_config/Android.bp
@@ -0,0 +1,63 @@
+// Copyright (C) 2008 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.
+
+cc_binary_host {
+    name: "fs_config",
+    srcs: ["fs_config.c"],
+    shared_libs: [
+        "libcutils",
+        "libselinux",
+    ],
+    cflags: ["-Werror"],
+}
+
+// -----------------------------------------------------------------------------
+// Unit tests.
+// -----------------------------------------------------------------------------
+
+test_c_flags = [
+    "-fstack-protector-all",
+    "-g",
+    "-Wall",
+    "-Wextra",
+    "-Werror",
+    "-fno-builtin",
+    "-DANDROID_FILESYSTEM_CONFIG=\"android_filesystem_config_test_data.h\"",
+]
+
+//#################################
+// test executable
+cc_test_host {
+    name: "fs_config_generate_test",
+    srcs: ["fs_config_generate.c"],
+    shared_libs: ["libcutils"],
+    cflags: test_c_flags,
+    relative_install_path: "fs_config-unit-tests",
+    no_named_install_directory: true,
+    gtest: false,
+
+}
+
+//#################################
+// gTest tool
+cc_test_host {
+    name: "fs_config-unit-tests",
+    cflags: test_c_flags + ["-DHOST"],
+    shared_libs: [
+        "liblog",
+        "libcutils",
+        "libbase",
+    ],
+    srcs: ["fs_config_test.cpp"],
+}
diff --git a/tools/fs_config/Android.mk b/tools/fs_config/Android.mk
index ab7f92d..3773d38 100644
--- a/tools/fs_config/Android.mk
+++ b/tools/fs_config/Android.mk
@@ -14,15 +14,6 @@
 
 LOCAL_PATH := $(call my-dir)
 
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := fs_config.c
-LOCAL_MODULE := fs_config
-LOCAL_SHARED_LIBRARIES := libcutils libselinux
-LOCAL_CFLAGS := -Werror
-
-include $(BUILD_HOST_EXECUTABLE)
-
 # One can override the default android_filesystem_config.h file in one of two ways:
 #
 # 1. The old way:
@@ -306,36 +297,3 @@
 fs_config_generate_bin :=
 my_gen_oem_aid :=
 fs_config_generate_extra_partition_list :=
-
-# -----------------------------------------------------------------------------
-# Unit tests.
-# -----------------------------------------------------------------------------
-
-test_c_flags := \
-    -fstack-protector-all \
-    -g \
-    -Wall \
-    -Wextra \
-    -Werror \
-    -fno-builtin \
-    -DANDROID_FILESYSTEM_CONFIG='"android_filesystem_config_test_data.h"'
-
-##################################
-# test executable
-include $(CLEAR_VARS)
-LOCAL_MODULE := fs_config_generate_test
-LOCAL_SRC_FILES := fs_config_generate.c
-LOCAL_SHARED_LIBRARIES := libcutils
-LOCAL_CFLAGS := $(test_c_flags)
-LOCAL_MODULE_RELATIVE_PATH := fs_config-unit-tests
-LOCAL_GTEST := false
-include $(BUILD_HOST_NATIVE_TEST)
-
-##################################
-# gTest tool
-include $(CLEAR_VARS)
-LOCAL_MODULE := fs_config-unit-tests
-LOCAL_CFLAGS += $(test_c_flags) -DHOST
-LOCAL_SHARED_LIBRARIES := liblog libcutils libbase
-LOCAL_SRC_FILES := fs_config_test.cpp
-include $(BUILD_HOST_NATIVE_TEST)
diff --git a/tools/fs_get_stats/Android.bp b/tools/fs_get_stats/Android.bp
new file mode 100644
index 0000000..6684319
--- /dev/null
+++ b/tools/fs_get_stats/Android.bp
@@ -0,0 +1,8 @@
+cc_binary_host {
+    name: "fs_get_stats",
+    srcs: ["fs_get_stats.c"],
+    shared_libs: [
+        "libcutils",
+        "liblog",
+    ],
+}
diff --git a/tools/fs_get_stats/Android.mk b/tools/fs_get_stats/Android.mk
deleted file mode 100644
index 4501c1f..0000000
--- a/tools/fs_get_stats/Android.mk
+++ /dev/null
@@ -1,11 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := fs_get_stats.c
-
-LOCAL_MODULE := fs_get_stats
-
-LOCAL_SHARED_LIBRARIES := libcutils liblog
-
-include $(BUILD_HOST_EXECUTABLE)
diff --git a/tools/releasetools/add_img_to_target_files.py b/tools/releasetools/add_img_to_target_files.py
index 1ce22e7..52d3918 100755
--- a/tools/releasetools/add_img_to_target_files.py
+++ b/tools/releasetools/add_img_to_target_files.py
@@ -505,7 +505,13 @@
       print("target_files appears to already contain images.")
       sys.exit(1)
 
-  has_vendor = os.path.isdir(os.path.join(OPTIONS.input_tmp, "VENDOR"))
+  # vendor.img is unlike system.img or system_other.img. Because it could be
+  # built from source, or dropped into target_files.zip as a prebuilt blob. We
+  # consider either of them as vendor.img being available, which could be used
+  # when generating vbmeta.img for AVB.
+  has_vendor = (os.path.isdir(os.path.join(OPTIONS.input_tmp, "VENDOR")) or
+                os.path.exists(os.path.join(OPTIONS.input_tmp, "IMAGES",
+                                            "vendor.img")))
   has_system_other = os.path.isdir(os.path.join(OPTIONS.input_tmp,
                                                 "SYSTEM_OTHER"))
 
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 6de9763..d2c9f59 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -36,30 +36,36 @@
 FIXED_SALT = "aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7"
 BLOCK_SIZE = 4096
 
-def RunCommand(cmd):
+def RunCommand(cmd, verbose=None):
   """Echo and run the given command.
 
   Args:
     cmd: the command represented as a list of strings.
+    verbose: show commands being executed.
   Returns:
     A tuple of the output and the exit code.
   """
-  print "Running: ", " ".join(cmd)
+  if verbose is None:
+    verbose = OPTIONS.verbose
+  if verbose:
+    print("Running: " + " ".join(cmd))
   p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
   output, _ = p.communicate()
-  print "%s" % (output.rstrip(),)
+
+  if verbose:
+    print(output.rstrip())
   return (output, p.returncode)
 
 def GetVerityFECSize(partition_size):
   cmd = ["fec", "-s", str(partition_size)]
-  output, exit_code = RunCommand(cmd)
+  output, exit_code = RunCommand(cmd, False)
   if exit_code != 0:
     return False, 0
   return True, int(output)
 
 def GetVerityTreeSize(partition_size):
   cmd = ["build_verity_tree", "-s", str(partition_size)]
-  output, exit_code = RunCommand(cmd)
+  output, exit_code = RunCommand(cmd, False)
   if exit_code != 0:
     return False, 0
   return True, int(output)
@@ -67,7 +73,7 @@
 def GetVerityMetadataSize(partition_size):
   cmd = ["system/extras/verity/build_verity_metadata.py", "size",
          str(partition_size)]
-  output, exit_code = RunCommand(cmd)
+  output, exit_code = RunCommand(cmd, False)
   if exit_code != 0:
     return False, 0
   return True, int(output)
@@ -186,6 +192,8 @@
     else:
       hi = i
 
+  print("Adjusted partition size for verity, partition_size: {},"
+        " verity_size: {}".format(result, verity_size))
   AdjustPartitionSizeForVerity.results[key] = (result, verity_size)
   return (result, verity_size)
 
@@ -513,9 +521,9 @@
 
   try:
     if fs_type.startswith("ext4"):
-      (ext4fs_output, exit_code) = RunCommand(build_command)
+      (ext4fs_output, exit_code) = RunCommand(build_command, True)
     else:
-      (_, exit_code) = RunCommand(build_command)
+      (_, exit_code) = RunCommand(build_command, True)
   finally:
     if in_dir != origin_in:
       # Clean up temporary directories and files.
diff --git a/tools/zipalign/Android.bp b/tools/zipalign/Android.bp
new file mode 100644
index 0000000..cfc6aec
--- /dev/null
+++ b/tools/zipalign/Android.bp
@@ -0,0 +1,31 @@
+//
+// Copyright 2008 The Android Open Source Project
+//
+// Zip alignment tool
+//
+
+cc_binary_host {
+    name: "zipalign",
+
+    srcs: [
+        "ZipAlign.cpp",
+        "ZipEntry.cpp",
+        "ZipFile.cpp",
+    ],
+
+    static_libs: [
+        "libandroidfw",
+        "libutils",
+        "libcutils",
+        "liblog",
+        "libzopfli",
+        "libz",
+    ],
+
+    target: {
+        windows: {
+            host_ldlibs: ["-lpthread"],
+            enabled: true,
+        },
+    },
+}
diff --git a/tools/zipalign/Android.mk b/tools/zipalign/Android.mk
deleted file mode 100644
index 8c0240a..0000000
--- a/tools/zipalign/Android.mk
+++ /dev/null
@@ -1,38 +0,0 @@
-# 
-# Copyright 2008 The Android Open Source Project
-#
-# Zip alignment tool
-#
-
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
-	ZipAlign.cpp \
-	ZipEntry.cpp \
-	ZipFile.cpp
-
-LOCAL_C_INCLUDES += external/zlib \
-	external/zopfli/src
-
-LOCAL_STATIC_LIBRARIES := \
-	libandroidfw \
-	libutils \
-	libcutils \
-	liblog \
-	libzopfli
-
-LOCAL_LDLIBS_linux += -lrt
-
-LOCAL_STATIC_LIBRARIES_windows += libz
-LOCAL_LDLIBS_linux += -lz
-LOCAL_LDLIBS_darwin += -lz
-
-ifneq ($(strip $(BUILD_HOST_static)),)
-LOCAL_LDLIBS += -lpthread
-endif # BUILD_HOST_static
-
-LOCAL_MODULE := zipalign
-LOCAL_MODULE_HOST_OS := darwin linux windows
-
-include $(BUILD_HOST_EXECUTABLE)