diff --git a/CleanSpec.mk b/CleanSpec.mk
index 5b18d44..bfa236c 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -329,6 +329,11 @@
 # instead.
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
 
+# On to MNC
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/Makefile b/core/Makefile
index 8cc7a54..0cf4d1e 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1257,6 +1257,7 @@
 	  $(HOST_OUT_EXECUTABLES)/imgdiff \
 	  $(HOST_OUT_JAVA_LIBRARIES)/dumpkey.jar \
 	  $(HOST_OUT_JAVA_LIBRARIES)/signapk.jar \
+	  $(HOST_OUT_JAVA_LIBRARIES)/BootSignature.jar \
 	  $(HOST_OUT_EXECUTABLES)/mkuserimg.sh \
 	  $(HOST_OUT_EXECUTABLES)/make_ext4fs \
 	  $(HOST_OUT_EXECUTABLES)/simg2img \
@@ -1272,6 +1273,32 @@
 .PHONY: otatools
 otatools: $(OTATOOLS)
 
+BUILT_OTATOOLS_PACKAGE := $(PRODUCT_OUT)/otatools.zip
+$(BUILT_OTATOOLS_PACKAGE): \
+	intermediate := $(call intermediates-dir-for,PACKAGING,otatools)
+$(BUILT_OTATOOLS_PACKAGE): \
+	zip_root := $(intermediate)/otatools
+
+otatools_lib_path := $(notdir $(HOST_OUT_SHARED_LIBRARIES))
+$(BUILT_OTATOOLS_PACKAGE): \
+		$(OTATOOLS) \
+		$(HOST_OUT_SHARED_LIBRARIES)/libc++.so
+	@echo "Package OTA tools: $@"
+	$(hide) rm -rf $@ $(zip_root)
+	$(hide) mkdir -p $(dir $@) $(zip_root)/bin $(zip_root)/framework $(zip_root)/releasetools $(zip_root)/$(otatools_lib_path)
+	$(hide) $(ACP) -p $(OTATOOLS) $(zip_root)/bin
+	$(hide) mv $(zip_root)/bin/*.jar $(zip_root)/framework/
+	$(hide) $(ACP) $(HOST_OUT_SHARED_LIBRARIES)/libc++.so $(zip_root)/$(otatools_lib_path)
+	$(hide) $(ACP) -r -d -p build/tools/releasetools/* $(zip_root)/releasetools
+	$(hide) rm -rf $@ $(zip_root)/releasetools/*.pyc
+	$(hide) (cd $(zip_root) && zip -qry $(abspath $@) bin framework releasetools $(otatools_lib_path))
+	$(hide) zip -qry $(abspath $@) build/target/product/security/
+	$(hide) find device vendor -name \*.pk8 -o -name \*.x509.pem -o -name oem.prop | xargs zip -qry $(abspath $@)
+
+.PHONY: otatools-package
+otatools-package: $(BUILT_OTATOOLS_PACKAGE)
+
+
 # -----------------------------------------------------------------
 # A zip of the directories that map to the target filesystem.
 # This zip can be used to create an OTA package or filesystem image
diff --git a/core/base_rules.mk b/core/base_rules.mk
index 38f04f1..fee05dc 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -417,10 +417,11 @@
 #                 be up-to-date.
 ifdef LOCAL_IS_HOST_MODULE
 ifeq ($(USE_CORE_LIB_BOOTCLASSPATH),true)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH := -bootclasspath $(call java-lib-deps,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH := -bootclasspath $(call java-lib-files,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
 
 full_shared_java_libs := $(call java-lib-files,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
-full_java_lib_deps := $(call java-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
+full_java_lib_deps := $(call java-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE)) \
+    $(full_shared_java_libs)
 else
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH :=
 
@@ -679,6 +680,105 @@
 endif
 
 ###########################################################
+# JACK
+###########################################################
+ifeq ($(LOCAL_USE_JACK),true)
+ifdef need_compile_java
+
+full_static_jack_libs := \
+    $(foreach lib,$(LOCAL_STATIC_JAVA_LIBRARIES), \
+      $(call intermediates-dir-for, \
+        JAVA_LIBRARIES,$(lib),$(LOCAL_IS_HOST_MODULE),COMMON)/classes.jack)
+
+ifeq ($(my_prefix),TARGET_)
+ifeq ($(LOCAL_SDK_VERSION),)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES := $(call jack-lib-files,core-libart)
+else
+ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),current)
+# LOCAL_SDK_VERSION is current and no TARGET_BUILD_APPS.
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES := $(call jack-lib-files,android_stubs_current)
+else ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),system_current)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES := $(call jack-lib-files,android_system_stubs_current)
+else
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES := $(call jack-lib-files,sdk_v$(LOCAL_SDK_VERSION))
+endif # current or system_current
+endif # LOCAL_SDK_VERSION
+endif # TARGET_
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_STATIC_JACK_LIBRARIES := $(full_static_jack_libs)
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_VM_ARGS := $(DEFAULT_JACK_VM_ARGS)
+ifneq ($(ANDROID_JACK_VM_ARGS),)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_VM_ARGS := $(ANDROID_JACK_VM_ARGS)
+endif
+ifneq ($(LOCAL_JACK_VM_ARGS),)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_VM_ARGS := $(LOCAL_JACK_VM_ARGS)
+endif
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_EXTRA_ARGS := $(DEFAULT_JACK_EXTRA_ARGS)
+ifneq ($(ANDROID_JACK_EXTRA_ARGS),)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_EXTRA_ARGS := $(ANDROID_JACK_EXTRA_ARGS)
+endif
+ifneq ($(LOCAL_JACK_EXTRA_ARGS),)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_EXTRA_ARGS := $(LOCAL_JACK_EXTRA_ARGS)
+endif
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_VM := $(DEFAULT_JACK_VM)
+ifneq ($(strip $(ANDROID_JACK_VM)),)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_VM := $(ANDROID_JACK_VM)
+endif
+
+ifdef LOCAL_IS_HOST_MODULE
+ifeq ($(USE_CORE_LIB_BOOTCLASSPATH),true)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES := $(call jack-lib-files,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
+full_shared_jack_libs := $(call jack-lib-files,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
+full_jack_lib_deps := $(call jack-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
+else
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES :=
+full_shared_jack_libs := $(call jack-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
+full_jack_lib_deps := $(full_shared_jack_libs)
+endif # USE_CORE_LIB_BOOTCLASSPATH
+else # !LOCAL_IS_HOST_MODULE
+full_shared_jack_libs := $(call jack-lib-files,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
+full_jack_lib_deps := $(call jack-lib-deps,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
+endif # !LOCAL_IS_HOST_MODULE
+full_jack_libs := $(full_shared_jack_libs) $(full_static_jack_libs) $(LOCAL_JACK_CLASSPATH)
+full_jack_lib_deps += $(full_static_jack_libs) $(LOCAL_JACK_CLASSPATH)
+
+# This is set by packages that are linking to other packages that export
+# shared libraries, allowing them to make use of the code in the linked apk.
+ifneq ($(apk_libraries),)
+  link_apk_jack_libraries := \
+      $(foreach lib,$(apk_libraries), \
+        $(call intermediates-dir-for, \
+              APPS,$(lib),,COMMON)/classes.jack)
+
+  # link against the jar with full original names (before proguard processing).
+  full_shared_jack_libs += $(link_apk_jack_libraries)
+  full_jack_libs += $(link_apk_jack_libraries)
+  full_jack_lib_deps += $(link_apk_jack_libraries)
+endif
+
+# This is set by packages that contain instrumentation, allowing them to
+# link against the package they are instrumenting.  Currently only one such
+# package is allowed.
+ifdef LOCAL_INSTRUMENTATION_FOR
+
+   # link against the jar with full original names (before proguard processing).
+   link_instr_classes_jack := $(link_instr_intermediates_dir.COMMON)/classes.noshrob.jack
+   full_jack_libs += $(link_instr_classes_jack)
+   full_jack_lib_deps += $(link_instr_classes_jack)
+endif
+
+endif  # need_compile_java
+
+# Propagate local configuration options to this target.
+$(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_ALL_JACK_LIBRARIES:= $(full_jack_libs)
+$(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
+
+endif # LOCAL_USE_JACK
+
+###########################################################
 ## NOTICE files
 ###########################################################
 
diff --git a/core/binary.mk b/core/binary.mk
index 81513f5..56f8da8 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -213,10 +213,15 @@
 ## Please note that we will do option filtering during FDO build.
 ## i.e. Os->O2, remove -fno-early-inline and -finline-limit.
 ##################################################################
-ifeq ($(strip $(LOCAL_FDO_SUPPORT)), true)
-  ifeq ($(strip $(LOCAL_IS_HOST_MODULE)),)
-    my_cflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_CFLAGS)
-    my_ldflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_LDFLAGS)
+my_fdo_build :=
+ifneq ($(filter true always, $(LOCAL_FDO_SUPPORT)),)
+  ifeq ($(BUILD_FDO_INSTRUMENT),true)
+    my_cflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_INSTRUMENT_CFLAGS)
+    my_ldflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_INSTRUMENT_LDFLAGS)
+    my_fdo_build := true
+  else ifneq ($(filter true,$(BUILD_FDO_OPTIMIZE))$(filter always,$(LOCAL_FDO_SUPPORT)),)
+    my_cflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_OPTIMIZE_CFLAGS)
+    my_fdo_build := true
   endif
 endif
 
@@ -994,19 +999,10 @@
 my_ldflags := $(call $(LOCAL_2ND_ARCH_VAR_PREFIX)convert-to-$(my_host)clang-flags,$(my_ldflags))
 endif
 
-ifeq ($(LOCAL_FDO_SUPPORT), true)
-  build_with_fdo := false
-  ifeq ($(BUILD_FDO_INSTRUMENT), true)
-    build_with_fdo := true
-  endif
-  ifeq ($(BUILD_FDO_OPTIMIZE), true)
-    build_with_fdo := true
-  endif
-  ifeq ($(build_with_fdo), true)
-    my_cflags := $(patsubst -Os,-O2,$(my_cflags))
-    fdo_incompatible_flags=-fno-early-inlining -finline-limit=%
-    my_cflags := $(filter-out $(fdo_incompatible_flags),$(my_cflags))
-  endif
+ifeq ($(my_fdo_build), true)
+  my_cflags := $(patsubst -Os,-O2,$(my_cflags))
+  fdo_incompatible_flags := -fno-early-inlining -finline-limit=%
+  my_cflags := $(filter-out $(fdo_incompatible_flags),$(my_cflags))
 endif
 
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_YACCFLAGS := $(LOCAL_YACCFLAGS)
diff --git a/core/build_id.mk b/core/build_id.mk
index f94b224..0e8e2cf 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,6 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-BUILD_ID := AOSP
-
-DISPLAY_BUILD_NUMBER := true
+export BUILD_ID=MASTER
diff --git a/core/cleanbuild.mk b/core/cleanbuild.mk
index cf980d8..58b1ee4 100644
--- a/core/cleanbuild.mk
+++ b/core/cleanbuild.mk
@@ -247,3 +247,17 @@
   $(info *** Done with the cleaning, now starting the real build.)
 endif
 force_installclean :=
+
+.PHONY: clean-jack-files
+clean-jack-files: clean-dex-files
+	$(hide) find $(OUT_DIR) -name "*.jack" | xargs rm -f
+	$(hide) find $(OUT_DIR) -type d -name "jack" | xargs rm -rf
+	@echo "All jack files have been removed."
+
+.PHONY: clean-dex-files
+clean-dex-files:
+	$(hide) find $(OUT_DIR) -name "*.dex" | xargs rm -f
+	$(hide) for i in `find $(OUT_DIR) -name "*.jar" -o -name "*.apk"` ; do ((unzip -l $$i 2> /dev/null | \
+				grep -q "\.dex$$" && rm -f $$i) || continue ) ; done
+	@echo "All dex files and archives containing dex files have been removed."
+
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 5c1a58d..6e7b6b1 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -73,6 +73,7 @@
 LOCAL_JAVA_LAYERS_FILE:=
 LOCAL_NO_STANDARD_LIBRARIES:=
 LOCAL_CLASSPATH:=
+LOCAL_JACK_CLASSPATH:=
 LOCAL_DROIDDOC_USE_STANDARD_DOCLET:=
 LOCAL_DROIDDOC_SOURCE_PATH:=
 LOCAL_DROIDDOC_TEMPLATE_DIR:=
@@ -106,6 +107,10 @@
 LOCAL_ADDITIONAL_JAVA_DIR:=
 LOCAL_ALLOW_UNDEFINED_SYMBOLS:=
 LOCAL_DX_FLAGS:=
+LOCAL_USE_JACK:=$(ANDROID_COMPILE_WITH_JACK)
+LOCAL_JACK_VM_ARGS :=
+LOCAL_JACK_EXTRA_ARGS :=
+LOCAL_JACK_FLAGS:=
 LOCAL_CERTIFICATE:=
 LOCAL_SDK_VERSION:=
 LOCAL_SDK_RES_VERSION:=
@@ -113,6 +118,7 @@
 LOCAL_EMMA_INSTRUMENT:=
 LOCAL_PROGUARD_ENABLED:= # '',full,custom,nosystem,disabled,obfuscation,optimization
 LOCAL_PROGUARD_FLAGS:=
+LOCAL_JACK_PROGUARD_FLAGS:=
 LOCAL_PROGUARD_FLAG_FILES:=
 LOCAL_TEST_MODULE_TO_PROGUARD_WITH:=
 LOCAL_EMMA_COVERAGE_FILTER:=
diff --git a/core/combo/TARGET_linux-x86_64.mk b/core/combo/TARGET_linux-x86_64.mk
index d92e974..ae17c72 100644
--- a/core/combo/TARGET_linux-x86_64.mk
+++ b/core/combo/TARGET_linux-x86_64.mk
@@ -23,7 +23,7 @@
 endif
 
 # Decouple NDK library selection with platform compiler version
-TARGET_NDK_GCC_VERSION := 4.8
+TARGET_NDK_GCC_VERSION := 4.9
 
 ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
 TARGET_GCC_VERSION := 4.8
diff --git a/core/combo/fdo.mk b/core/combo/fdo.mk
index 9e331b6..8fb8fd3 100644
--- a/core/combo/fdo.mk
+++ b/core/combo/fdo.mk
@@ -18,22 +18,16 @@
 
 $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS:=
 
-ifeq ($(strip $(BUILD_FDO_INSTRUMENT)), true)
-  # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
-  # The profile will be generated on /sdcard/fdo_profile on the device.
-  $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-generate=/sdcard/fdo_profile -DANDROID_FDO
-  $(combo_2nd_arch_prefix)TARGET_FDO_LDFLAGS := -lgcov -lgcc
-else
-  ifeq ($(strip $(BUILD_FDO_OPTIMIZE)), true)
-    # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
-    ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH)),)
-      $(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH := vendor/google_data/fdo_profile
-    endif
+# Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
+# The profile will be generated on /sdcard/fdo_profile on the device.
+$(combo_2nd_arch_prefix)TARGET_FDO_INSTRUMENT_CFLAGS := -fprofile-generate=/sdcard/fdo_profile -DANDROID_FDO
+$(combo_2nd_arch_prefix)TARGET_FDO_INSTRUMENT_LDFLAGS := -lgcov -lgcc
 
-    ifneq ($(strip $(wildcard $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH)/$(PRODUCT_OUT))),)
-      $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-use=$($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH) -DANDROID_FDO -fprofile-correction -Wcoverage-mismatch -Wno-error
-    else
-      $(warning Profile directory $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH)/$(PRODUCT_OUT) does not exist. Turn off FDO.)
-    endif
-  endif
+# Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
+ifeq ($(strip $($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH)),)
+  $(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH := vendor/google_data/fdo_profile
 endif
+
+$(combo_2nd_arch_prefix)TARGET_FDO_OPTIMIZE_CFLAGS := \
+    -fprofile-use=$($(combo_2nd_arch_prefix)TARGET_FDO_PROFILE_PATH) \
+    -DANDROID_FDO -fprofile-correction -Wcoverage-mismatch -Wno-error
diff --git a/core/config.mk b/core/config.mk
index 14f4b1b..065ab90 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -363,6 +363,9 @@
 
 # ---------------------------------------------------------------
 # Generic tools.
+JACK_JAR := $(HOST_OUT_JAVA_LIBRARIES)/jack.jar
+JILL_JAR := $(HOST_OUT_JAVA_LIBRARIES)/jill.jar
+JACK_MULTIDEX_DEFAULT_PREPROCESSOR := frameworks/multidex/library/resources/JACK-INF/legacyMultidexInstallation.jpp
 
 LEX := prebuilts/misc/$(BUILD_OS)-$(HOST_PREBUILT_ARCH)/flex/flex-2.5.39
 # The default PKGDATADIR built in the prebuilt bison is a relative path
@@ -402,6 +405,18 @@
 TUNE2FS := $(HOST_OUT_EXECUTABLES)/tune2fs$(HOST_EXECUTABLE_SUFFIX)
 E2FSCK := $(HOST_OUT_EXECUTABLES)/e2fsck$(HOST_EXECUTABLE_SUFFIX)
 JARJAR := $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
+# call jack
+#
+# $(1): vm
+# $(2): vm arguments
+# $(3): jack perf arguments
+define call-jack
+$(1) $(2) -cp $(JACK_JAR) com.android.jack.Main $(3)
+endef
+DEFAULT_JACK_VM := java
+DEFAULT_JACK_VM_ARGS := -Dfile.encoding=UTF-8 -Xmx3584m -Xms2560m -XX:+TieredCompilation
+DEFAULT_JACK_EXTRA_ARGS := -D sched.runner=single-threaded --sanity-checks off
+JILL := java -Xmx3500m -cp $(JILL_JAR) com.android.jill.Main
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py
 LLVM_RS_CC := $(HOST_OUT_EXECUTABLES)/llvm-rs-cc$(HOST_EXECUTABLE_SUFFIX)
diff --git a/core/definitions.mk b/core/definitions.mk
index e276887..a44ffdb 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -403,6 +403,14 @@
 endef
 
 ###########################################################
+## Reverse order of a list
+###########################################################
+
+define reverse-list
+$(if $(1),$(call reverse-list,$(wordlist 2,$(words $(1)),$(1)))) $(firstword $(1))
+endef
+
+###########################################################
 ## The intermediates directory.  Where object files go for
 ## a given target.  We could technically get away without
 ## the "_intermediates" suffix on the directory, but it's
@@ -602,6 +610,36 @@
 endef
 
 ###########################################################
+## Convert "core ext framework" to "out/.../classes.jack ..."
+## $(1): library list
+## $(2): Non-empty if IS_HOST_MODULE
+###########################################################
+
+# $(1): library name
+# $(2): Non-empty if IS_HOST_MODULE
+define _jack-lib-full-classes
+$(call _java-lib-dir,$(1),$(2))/classes.jack
+endef
+
+# $(1): library name list
+# $(2): Non-empty if IS_HOST_MODULE
+define jack-lib-files
+$(foreach lib,$(1),$(call _jack-lib-full-classes,$(lib),$(2)))
+endef
+
+# $(1): library name
+# $(2): Non-empty if IS_HOST_MODULE
+define _jack-lib-full-dep
+$(call _jack-lib-full-classes,$(1),$(2))
+endef
+
+# $(1): library name list
+# $(2): Non-empty if IS_HOST_MODULE
+define jack-lib-deps
+$(foreach lib,$(1),$(call _jack-lib-full-dep,$(lib),$(2)))
+endef
+
+###########################################################
 ## Run rot13 on a string
 ## $(1): the string.  Must be one line.
 ###########################################################
@@ -1371,7 +1409,8 @@
 define transform-to-stripped
 @mkdir -p $(dir $@)
 @echo "target Strip: $(PRIVATE_MODULE) ($@)"
-$(hide) $(PRIVATE_STRIP) --strip-all $< -o $@ $(TARGET_STRIP_EXTRA)
+$(hide) $(PRIVATE_STRIP) --strip-all $< -o $@ \
+  $(if $(PRIVATE_NO_DEBUGLINK),,$(TARGET_STRIP_EXTRA))
 endef
 
 define transform-to-stripped-keep-symbols
@@ -1678,6 +1717,142 @@
 $(call compile-java,$(TARGET_JAVAC),$(PRIVATE_BOOTCLASSPATH))
 endef
 
+# Invoke Jack to compile java from source to dex and jack files.
+#
+# Some historical notes:
+# - below we write the list of java files to java-source-list to avoid argument
+#   list length problems with Cygwin
+# - we filter out duplicate java file names because Jack doesn't like them.
+# TODO (yroussel) PRIVATE_RMTYPEDEFS
+define jack-java-to-dex
+$(hide) rm -f $@
+$(hide) rm -f $(PRIVATE_CLASSES_JACK)
+$(hide) rm -rf $(PRIVATE_JACK_INTERMEDIATES_DIR)
+$(hide) mkdir -p $(dir $@)
+$(hide) mkdir -p $(dir $(PRIVATE_CLASSES_JACK))
+$(hide) mkdir -p $(PRIVATE_JACK_INTERMEDIATES_DIR)
+$(call dump-words-to-file,$(PRIVATE_JAVA_SOURCES),$(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list)
+$(hide) if [ -d "$(PRIVATE_SOURCE_INTERMEDIATES_DIR)" ]; then \
+          find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name '*.java' >> $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list; \
+fi
+$(hide) tr ' ' '\n' < $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list \
+    | sort -u > $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq
+$(if $(PRIVATE_JACK_PROGUARD_FLAGS), \
+    $(hide) echo -basedirectory $(CURDIR) > $@.flags; \
+    echo $(PRIVATE_JACK_PROGUARD_FLAGS) >> $@.flags; \
+)
+$(if $(PRIVATE_EXTRA_JAR_ARGS),
+    $(hide) mkdir -p $@.res.tmp
+    $(hide) $(call create-empty-package-at,$@.res.tmp.zip)
+    $(hide) $(call add-java-resources-to,$@.res.tmp.zip)
+    $(hide) $(call unzip-jar-files,$@.res.tmp.zip,$@.res.tmp)
+    $(hide) rm $@.res.tmp.zip)
+$(hide) if [ -s $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq ] ; then \
+    export tmpEcjArg="@$(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq"; \
+else \
+    export tmpEcjArg=""; \
+fi; \
+$(call call-jack,$(PRIVATE_JACK_VM),$(PRIVATE_JACK_VM_ARGS),$(PRIVATE_JACK_EXTRA_ARGS)) \
+    $(strip $(PRIVATE_JACK_FLAGS)) \
+    $(strip $(PRIVATE_JACK_DEBUG_FLAGS)) \
+    $(if $(NO_OPTIMIZE_DX), \
+        -D jack.dex.optimize="false") \
+    $(addprefix --classpath ,$(strip \
+        $(call normalize-path-list,$(PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES) $(PRIVATE_ALL_JACK_LIBRARIES)))) \
+    $(addprefix --import ,$(call reverse-list,$(PRIVATE_STATIC_JACK_LIBRARIES))) \
+    $(if $(PRIVATE_EXTRA_JAR_ARGS),--import-resource $@.res.tmp) \
+    -D jack.import.resource.policy=keep-first \
+    -D jack.import.type.policy=keep-first \
+    --output-jack $(PRIVATE_CLASSES_JACK) \
+    -D jack.java.source.version=1.7 \
+    --output-dex $(PRIVATE_JACK_INTERMEDIATES_DIR) \
+    $(addprefix --config-jarjar ,$(strip $(PRIVATE_JARJAR_RULES))) \
+    $(if $(PRIVATE_JACK_PROGUARD_FLAGS),--config-proguard $@.flags) \
+    $$tmpEcjArg \
+    || ( rm -rf $(PRIVATE_CLASSES_JACK); rm -rf $(PRIVATE_JACK_INTERMEDIATES_DIR); exit 41 )
+$(hide) mv $(PRIVATE_JACK_INTERMEDIATES_DIR)/classes*.dex $(dir $@)
+$(hide) rm -f $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list
+$(if $(PRIVATE_EXTRA_JAR_ARGS),$(hide) rm -rf $@.res.tmp)
+$(hide) mv $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq $(PRIVATE_JACK_INTERMEDIATES_DIR).java-source-list
+$(if $(PRIVATE_JAR_PACKAGES), $(hide) echo unsupported options PRIVATE_JAR_PACKAGES in $@; exit 53)
+$(if $(PRIVATE_JAR_EXCLUDE_PACKAGES), $(hide) echo unsupported options JAR_EXCLUDE_PACKAGES in $@; exit 53)
+$(if $(PRIVATE_JAR_MANIFEST), $(hide) echo unsupported options JAR_MANIFEST in $@; exit 53)
+endef
+
+define transform-jar-to-jack
+	$(hide) mkdir -p $(dir $@)
+	$(JILL) --output $@.tmpjill.jack $<
+	$(hide) mkdir -p $@.tmpjill.res
+	$(hide) $(call unzip-jar-files,$<,$@.tmpjill.res)
+	$(hide) find $@.tmpjill.res -iname "*.class" -delete
+	$(hide) $(call call-jack,$(PRIVATE_JACK_VM),$(PRIVATE_JACK_VM_ARGS),$(PRIVATE_JACK_EXTRA_ARGS)) \
+        -D jack.import.resource.policy=keep-first \
+        -D jack.import.type.policy=keep-first \
+	    --import $@.tmpjill.jack \
+	    --import-resource $@.tmpjill.res \
+	    --output-jack $@
+	$(hide) rm -rf $@.tmpjill.res
+	$(hide) rm $@.tmpjill.jack
+endef
+
+
+# Invoke Jack to compile java from source to jack files without shrink or obfuscation.
+#
+# Some historical notes:
+# - below we write the list of java files to java-source-list to avoid argument
+#   list length problems with Cygwin
+# - we filter out duplicate java file names because Jack doesn't like them.
+define java-to-jack
+$(hide) rm -f $@
+$(hide) rm -rf $(PRIVATE_JACK_INTERMEDIATES_DIR)
+$(hide) mkdir -p $(dir $@)
+$(hide) mkdir -p $(PRIVATE_JACK_INTERMEDIATES_DIR)
+$(call dump-words-to-file,$(PRIVATE_JAVA_SOURCES),$(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list)
+$(hide) if [ -d "$(PRIVATE_SOURCE_INTERMEDIATES_DIR)" ]; then \
+          find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name '*.java' >> $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list; \
+fi
+$(hide) tr ' ' '\n' < $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list \
+    | sort -u > $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq
+$(if $(PRIVATE_JACK_PROGUARD_FLAGS), \
+    $(hide) echo -basedirectory $(CURDIR) > $@.flags; \
+    echo $(PRIVATE_JACK_PROGUARD_FLAGS) >> $@.flags; \
+)
+$(if $(PRIVATE_EXTRA_JAR_ARGS),
+	$(hide) mkdir -p $@.res.tmp
+	$(hide) $(call create-empty-package-at,$@.res.tmp.zip)
+	$(hide) $(call add-java-resources-to,$@.res.tmp.zip)
+	$(hide) unzip -qo $@.res.tmp.zip -d $@.res.tmp
+	$(hide) rm $@.res.tmp.zip)
+$(hide) if [ -s $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq ] ; then \
+    export tmpEcjArg="@$(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq"; \
+else \
+    export tmpEcjArg=""; \
+fi; \
+$(call call-jack,$(PRIVATE_JACK_VM),$(PRIVATE_JACK_VM_ARGS),$(PRIVATE_JACK_EXTRA_ARGS)) \
+    $(strip $(PRIVATE_JACK_FLAGS)) \
+    $(strip $(PRIVATE_JACK_DEBUG_FLAGS)) \
+    $(if $(NO_OPTIMIZE_DX), \
+        -D jack.dex.optimize="false") \
+    $(addprefix --classpath ,$(strip \
+        $(call normalize-path-list,$(PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES) $(PRIVATE_ALL_JACK_LIBRARIES)))) \
+    $(addprefix --import ,$(call reverse-list,$(PRIVATE_STATIC_JACK_LIBRARIES))) \
+    $(if $(PRIVATE_EXTRA_JAR_ARGS),--import-resource $@.res.tmp) \
+    -D jack.import.resource.policy=keep-first \
+    -D jack.import.type.policy=keep-first \
+    -D jack.java.source.version=1.7 \
+    --output-jack $@ \
+    $(addprefix --config-jarjar ,$(strip $(PRIVATE_JARJAR_RULES))) \
+    $(if $(PRIVATE_JACK_PROGUARD_FLAGS),--config-proguard $@.flags) \
+    $$tmpEcjArg \
+    || ( rm -f $@ ; exit 41 )
+$(hide) rm -f $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list
+$(if $(PRIVATE_EXTRA_JAR_ARGS),$(hide) rm -rf $@.res.tmp)
+$(hide) mv $(PRIVATE_JACK_INTERMEDIATES_DIR)/java-source-list-uniq $(PRIVATE_JACK_INTERMEDIATES_DIR).java-source-list
+$(if $(PRIVATE_JAR_PACKAGES), $(hide) echo unsupported options PRIVATE_JAR_PACKAGES in $@; exit 53)
+$(if $(PRIVATE_JAR_EXCLUDE_PACKAGES), $(hide) echo unsupported options JAR_EXCLUDE_PACKAGES in $@; exit 53)
+$(if $(PRIVATE_JAR_MANIFEST), $(hide) echo unsupported options JAR_MANIFEST in $@; exit 53)
+endef
+
 # Override the above definitions if we want to do incremetal javac
 ifeq (true, $(ENABLE_INCREMENTALJAVAC))
 define compile-java
@@ -1771,12 +1946,20 @@
 # Create a mostly-empty .jar file that we'll add to later.
 # The MacOS jar tool doesn't like creating empty jar files,
 # so we need to give it something.
+# $(1) package to create
+define create-empty-package-at
+@mkdir -p $(dir $(1))
+$(hide) touch $(dir $(1))dummy
+$(hide) (cd $(dir $(1)) && jar cf $(notdir $(1)) dummy)
+$(hide) zip -qd $(1) dummy
+$(hide) rm $(dir $(1))dummy
+endef
+
+# Create a mostly-empty .jar file that we'll add to later.
+# The MacOS jar tool doesn't like creating empty jar files,
+# so we need to give it something.
 define create-empty-package
-@mkdir -p $(dir $@)
-$(hide) touch $(dir $@)dummy
-$(hide) (cd $(dir $@) && jar cf $(notdir $@) dummy)
-$(hide) zip -qd $@ dummy
-$(hide) rm $(dir $@)dummy
+$(call create-empty-package-at,$@)
 endef
 
 # Copy an arhchive file and delete any class files and empty folders inside.
@@ -1847,6 +2030,19 @@
 @rm -f $(1).jar-arg-list
 endef
 
+# Add resources carried by static Jack libraries.
+#
+define add-carried-jack-resources
+ $(hide) if [ -d $(PRIVATE_JACK_INTERMEDIATES_DIR) ] ; then \
+    jack_res_jar_flags=$$(find $(PRIVATE_JACK_INTERMEDIATES_DIR) -type f \
+        | sed -e "s?^$(PRIVATE_JACK_INTERMEDIATES_DIR)/? -C $(PRIVATE_JACK_INTERMEDIATES_DIR) ?"); \
+    if [ -n "$$jack_res_jar_flags" ] ; then \
+        echo $$jack_res_jar_flags >$(dir $@)jack_res_jar_flags; \
+        jar uf $@ $$jack_res_jar_flags; \
+    fi; \
+fi
+endef
+
 # Sign a package using the specified key/cert.
 #
 define sign-package
diff --git a/core/dpi_specific_apk.mk b/core/dpi_specific_apk.mk
index aad4713..11c7c84 100644
--- a/core/dpi_specific_apk.mk
+++ b/core/dpi_specific_apk.mk
@@ -25,24 +25,31 @@
 $(built_dpi_apk): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_INSTRUMENTATION_FOR)
 $(built_dpi_apk): PRIVATE_JNI_SHARED_LIBRARIES := $(jni_shared_libraries_with_abis)
 $(built_dpi_apk): PRIVATE_JNI_SHARED_LIBRARIES_ABI := $(jni_shared_libraries_abis)
-$(built_dpi_apk): PRIVATE_DEX_FILE := $(built_dex)
-# Note that PRIVATE_CLASS_INTERMEDIATES_DIR points to the base apk's intermediate dir.
-$(built_dpi_apk): PRIVATE_CLASS_INTERMEDIATES_DIR := $(intermediates)/classes
-$(built_dpi_apk): PRIVATE_EXTRA_JAR_ARGS := $(extra_jar_args)
 $(built_dpi_apk): PRIVATE_PRIVATE_KEY := $(private_key)
 $(built_dpi_apk): PRIVATE_CERTIFICATE := $(certificate)
 $(built_dpi_apk): PRIVATE_ADDITIONAL_CERTIFICATES := $(foreach c,\
     $(LOCAL_ADDITIONAL_CERTIFICATES), $(c).x509.pem $(c).pk8)
 
+ifneq ($(full_classes_jar),)
+$(built_dpi_apk): PRIVATE_DEX_FILE := $(built_dex)
+# Use the jarjar processed arhive as the initial package file.
+$(built_dpi_apk): PRIVATE_SOURCE_ARCHIVE := $(full_classes_jarjar_jar)
+$(built_dpi_apk): $(built_dex)
+else
+$(built_dpi_apk): PRIVATE_DEX_FILE :=
+$(built_dpi_apk): PRIVATE_SOURCE_ARCHIVE :=
+endif # full_classes_jar
+
 # Set up dependenncies and the build recipe.
 $(built_dpi_apk) : $(R_file_stamp)
 $(built_dpi_apk) : $(all_library_res_package_export_deps)
-$(built_dpi_apk) : $(built_dex)
 $(built_dpi_apk) : $(private_key) $(certificate) $(SIGNAPK_JAR)
 $(built_dpi_apk) : $(AAPT) | $(ZIPALIGN)
 $(built_dpi_apk) : $(all_res_assets) $(jni_shared_libraries) $(full_android_manifest)
 	@echo "target Package: $(PRIVATE_MODULE) ($@)"
-	$(create-empty-package)
+	$(if $(PRIVATE_SOURCE_ARCHIVE),\
+	  $(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@),\
+	  $(create-empty-package))
 	$(add-assets-to-package)
 ifneq ($(jni_shared_libraries),)
 	$(add-jni-shared-libs-to-package)
@@ -50,10 +57,6 @@
 ifneq ($(full_classes_jar),)
 	$(add-dex-to-package)
 endif
-	$(add-carried-java-resources)
-ifneq ($(extra_jar_args),)
-	$(add-java-resources-to-package)
-endif
 	$(sign-package)
 	$(align-package)
 
diff --git a/core/dynamic_binary.mk b/core/dynamic_binary.mk
index 08fb176..cf06a3d 100644
--- a/core/dynamic_binary.mk
+++ b/core/dynamic_binary.mk
@@ -88,18 +88,21 @@
   my_strip_module := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP_MODULE)
 endif
 
-ifeq ($(my_strip_module),true)
-# Strip the binary
-$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
-$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
-$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
-	$(transform-to-stripped)
-else
-ifeq ($(my_strip_module),keep_symbols)
-# Strip only the debug frames, but leave the symbol table.
 $(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
 $(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
 $(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)
+ifeq ($(my_strip_module),no_debuglink)
+$(strip_output): PRIVATE_NO_DEBUGLINK := true
+else
+$(strip_output): PRIVATE_NO_DEBUGLINK :=
+endif
+
+ifneq ($(filter true no_debuglink,$(my_strip_module)),)
+# Strip the binary
+$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
+	$(transform-to-stripped)
+else ifeq ($(my_strip_module),keep_symbols)
+# Strip only the debug frames, but leave the symbol table.
 $(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
 	$(transform-to-stripped-keep-symbols)
 
@@ -126,7 +129,6 @@
 	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
 	$(copy-file-to-target-with-cp)
 endif
-endif
 endif # my_strip_module
 
 
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index e946b24..647289b 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -34,11 +34,13 @@
 full_classes_compiled_jar := $(intermediates.COMMON)/classes-full-debug.jar
 full_classes_jarjar_jar := $(intermediates.COMMON)/classes-jarjar.jar
 full_classes_jar := $(intermediates.COMMON)/classes.jar
+full_classes_jack := $(intermediates.COMMON)/classes.jack
 built_dex := $(intermediates.COMMON)/classes.dex
 
 LOCAL_INTERMEDIATE_TARGETS += \
     $(full_classes_compiled_jar) \
     $(full_classes_jarjar_jar) \
+    $(full_classes_jack) \
     $(full_classes_jar) \
     $(built_dex)
 
@@ -96,6 +98,7 @@
 	@echo Copying: $@
 	$(hide) $(ACP) -fp $< $@
 
+ifneq ($(LOCAL_USE_JACK),true)
 $(built_dex): PRIVATE_INTERMEDIATES_DIR := $(intermediates.COMMON)
 $(built_dex): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
 $(built_dex): $(full_classes_jar) $(DX)
@@ -108,6 +111,30 @@
 	$(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@)
 	$(add-dex-to-package)
 
+else # LOCAL_USE_JACK
+$(LOCAL_INTERMEDIATE_TARGETS): \
+	PRIVATE_JACK_INTERMEDIATES_DIR := $(intermediates.COMMON)/jayces
+$(LOCAL_INTERMEDIATE_TARGETS):  PRIVATE_JACK_DEBUG_FLAGS := -g
+
+$(built_dex): PRIVATE_CLASSES_JACK := $(full_classes_jack)
+$(built_dex): PRIVATE_JACK_FLAGS := $(LOCAL_JACK_FLAGS)
+$(built_dex): $(java_sources) $(java_resource_sources) $(full_jack_lib_deps) \
+        $(jar_manifest_file) $(proto_java_sources_file_stamp) $(LOCAL_MODULE_MAKEFILE) \
+        $(LOCAL_MODULE_MAKEFILE) $(LOCAL_ADDITIONAL_DEPENDENCIES) $(JACK_JAR)
+	@echo Building with Jack: $@
+	$(jack-java-to-dex)
+
+$(full_classes_jack): $(built_dex)
+
+$(LOCAL_BUILT_MODULE): PRIVATE_DEX_FILE := $(built_dex)
+$(LOCAL_BUILT_MODULE): $(built_dex) $(java_resource_sources)
+	@echo "Host Jar: $(PRIVATE_MODULE) ($@)"
+	$(create-empty-package)
+	$(add-dex-to-package)
+	$(add-carried-jack-resources)
+
+endif # LOCAL_USE_JACK
+
 USE_CORE_LIB_BOOTCLASSPATH :=
 
 endif
diff --git a/core/host_dalvik_static_java_library.mk b/core/host_dalvik_static_java_library.mk
index 9e5aaa3..6fe460e 100644
--- a/core/host_dalvik_static_java_library.mk
+++ b/core/host_dalvik_static_java_library.mk
@@ -24,7 +24,24 @@
 USE_CORE_LIB_BOOTCLASSPATH := true
 LOCAL_JAVA_LIBRARIES += core-libart-hostdex
 
+intermediates.COMMON := $(call intermediates-dir-for,JAVA_LIBRARIES,$(LOCAL_MODULE),true,COMMON,)
+full_classes_jack := $(intermediates.COMMON)/classes.jack
+LOCAL_INTERMEDIATE_TARGETS += \
+    $(full_classes_jack)
+
 include $(BUILD_SYSTEM)/host_java_library.mk
+# proguard is not supported
+# *.proto files are not supported
+$(full_classes_jack): PRIVATE_JACK_FLAGS := $(LOCAL_JACK_FLAGS)
+$(full_classes_jack): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
+$(full_classes_jack): \
+	PRIVATE_JACK_INTERMEDIATES_DIR := $(intermediates.COMMON)/jack
+$(full_classes_jack): $(java_sources) $(java_resource_sources) $(full_jack_lib_deps) \
+        $(jar_manifest_file) $(layers_file) $(LOCAL_MODULE_MAKEFILE) \
+        $(LOCAL_ADDITIONAL_DEPENDENCIES) $(LOCAL_JARJAR_RULES) \
+        $(JACK_JAR)
+	@echo Building with Jack: $@
+	$(java-to-jack)
 
 USE_CORE_LIB_BOOTCLASSPATH :=
 
diff --git a/core/java.mk b/core/java.mk
index c47ea22..b80e8b8 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -7,7 +7,9 @@
 ifeq ($(TARGET_BUILD_PDK_JAVA_PLATFORM),)
 # LOCAL_SDK not defined or set to current
 ifeq ($(filter-out current,$(LOCAL_SDK_VERSION)),)
+ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
 LOCAL_SDK_VERSION := $(PDK_BUILD_SDK_VERSION)
+endif #!LOCAL_NO_STANDARD_LIBRARIES
 endif
 endif # !PDK_JAVA
 endif #PDK
@@ -112,6 +114,10 @@
 full_classes_jar := $(intermediates.COMMON)/classes.jar
 built_dex := $(intermediates.COMMON)/classes.dex
 endif
+# final Jack library, shrinked and obfuscated if it must be
+full_classes_jack := $(intermediates.COMMON)/classes.jack
+# intermediate Jack library without shrink and obfuscation
+noshrob_classes_jack := $(intermediates.COMMON)/classes.noshrob.jack
 
 LOCAL_INTERMEDIATE_TARGETS += \
     $(full_classes_compiled_jar) \
@@ -120,6 +126,8 @@
     $(full_classes_jar) \
     $(full_classes_proguard_jar) \
     $(built_dex_intermediate) \
+    $(full_classes_jack) \
+    $(noshrob_classes_jack) \
     $(built_dex) \
     $(full_classes_stubs_jar)
 
@@ -333,7 +341,7 @@
 # - This extra copy, with the dependency on LOCAL_BUILT_MODULE allows the
 #   PRIVATE_ vars to be preserved.
 $(full_classes_stubs_jar): PRIVATE_SOURCE_FILE := $(full_classes_jar)
-$(full_classes_stubs_jar) : $(LOCAL_BUILT_MODULE) | $(ACP)
+$(full_classes_stubs_jar) : $(full_classes_jar) | $(ACP)
 	@echo Copying $(PRIVATE_SOURCE_FILE)
 	$(hide) $(ACP) -fp $(PRIVATE_SOURCE_FILE) $@
 ALL_MODULES.$(LOCAL_MODULE).STUBS := $(full_classes_stubs_jar)
@@ -419,50 +427,57 @@
     $(error invalid value for LOCAL_PROGUARD_ENABLED: $(LOCAL_PROGUARD_ENABLED))
 endif
 proguard_dictionary := $(intermediates.COMMON)/proguard_dictionary
-proguard_flags := $(addprefix -libraryjars ,$(full_shared_java_libs)) \
+# jack already has the libraries in its classpath and doesn't support jars
+legacy_proguard_flags := $(addprefix -libraryjars ,$(full_shared_java_libs))
+common_proguard_flags :=  \
                   -forceprocessing \
                   -printmapping $(proguard_dictionary)
 
 ifeq ($(filter nosystem,$(LOCAL_PROGUARD_ENABLED)),)
-proguard_flags += -include $(BUILD_SYSTEM)/proguard.flags
+common_proguard_flags += -include $(BUILD_SYSTEM)/proguard.flags
 ifeq ($(LOCAL_EMMA_INSTRUMENT),true)
-proguard_flags += -include $(BUILD_SYSTEM)/proguard.emma.flags
+common_proguard_flags += -include $(BUILD_SYSTEM)/proguard.emma.flags
 endif
 # If this is a test package, add proguard keep flags for tests.
 ifneq ($(LOCAL_INSTRUMENTATION_FOR)$(filter tests,$(LOCAL_MODULE_TAGS)),)
-proguard_flags += -include $(BUILD_SYSTEM)/proguard_tests.flags
+common_proguard_flags += -include $(BUILD_SYSTEM)/proguard_tests.flags
 ifeq ($(filter shrinktests,$(LOCAL_PROGUARD_ENABLED)),)
-proguard_flags += -dontshrink # don't shrink tests by default
+common_proguard_flags += -dontshrink # don't shrink tests by default
 endif # shrinktests
 endif # test package
 ifeq ($(filter obfuscation,$(LOCAL_PROGUARD_ENABLED)),)
 # By default no obfuscation
-proguard_flags += -dontobfuscate
+common_proguard_flags += -dontobfuscate
 endif  # No obfuscation
 ifeq ($(filter optimization,$(LOCAL_PROGUARD_ENABLED)),)
 # By default no optimization
-proguard_flags += -dontoptimize
+common_proguard_flags += -dontoptimize
 endif  # No optimization
 
 ifdef LOCAL_INSTRUMENTATION_FOR
 ifeq ($(filter obfuscation,$(LOCAL_PROGUARD_ENABLED)),)
 # If no obfuscation, link in the instrmented package's classes.jar as a library.
 # link_instr_classes_jar is defined in base_rule.mk
-proguard_flags += -libraryjars $(link_instr_classes_jar)
+# jack already has this library in its classpath and doesn't support jars
+legacy_proguard_flags += -libraryjars $(link_instr_classes_jar)
 else # obfuscation
 # If obfuscation is enabled, the main app must be obfuscated too.
 # We need to run obfuscation using the main app's dictionary,
 # and treat the main app's class.jar as injars instead of libraryjars.
-proguard_flags := -injars  $(link_instr_classes_jar) \
+legacy_proguard_flags := -injars  $(link_instr_classes_jar) \
     -outjars $(intermediates.COMMON)/proguard.$(LOCAL_INSTRUMENTATION_FOR).jar \
     -include $(link_instr_intermediates_dir.COMMON)/proguard_options \
     -applymapping $(link_instr_intermediates_dir.COMMON)/proguard_dictionary \
     -verbose \
-    $(proguard_flags)
+    $(legacy_proguard_flags)
+# not supported with jack
+ifeq ($(LOCAL_USE_JACK),true)
+    $(error $(LOCAL_MODULE): Build with jack of instrumentation when obfuscating is not yet supported)
+endif
 
 # Sometimes (test + main app) uses different keep rules from the main app -
 # apply the main app's dictionary anyway.
-proguard_flags += -ignorewarnings
+legacy_proguard_flags += -ignorewarnings
 
 # Make sure we run Proguard on the main app first
 $(full_classes_proguard_jar) : $(link_instr_intermediates_dir.COMMON)/proguard.classes.jar
@@ -480,7 +495,7 @@
 extra_input_jar :=
 endif
 $(full_classes_proguard_jar): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
-$(full_classes_proguard_jar): PRIVATE_PROGUARD_FLAGS := $(proguard_flags) $(LOCAL_PROGUARD_FLAGS)
+$(full_classes_proguard_jar): PRIVATE_PROGUARD_FLAGS := $(legacy_proguard_flags) $(common_proguard_flags) $(LOCAL_PROGUARD_FLAGS)
 $(full_classes_proguard_jar) : $(full_classes_jar) $(extra_input_jar) $(proguard_flag_files) | $(ACP) $(PROGUARD)
 	$(call transform-jar-to-proguard)
 
@@ -491,7 +506,7 @@
 
 endif # LOCAL_PROGUARD_ENABLED defined
 
-
+ifneq ($(strip $(LOCAL_USE_JACK)),true)
 # Override PRIVATE_INTERMEDIATES_DIR so that install-dex-debug
 # will work even when intermediates != intermediates.COMMON.
 $(built_dex_intermediate): PRIVATE_INTERMEDIATES_DIR := $(intermediates.COMMON)
@@ -507,6 +522,8 @@
 endif
 $(built_dex_intermediate): $(full_classes_proguard_jar) $(DX)
 	$(transform-classes.jar-to-dex)
+endif # !LOCAL_USE_JACK
+
 $(built_dex): $(built_dex_intermediate) | $(ACP)
 	@echo Copying: $@
 	$(hide) mkdir -p $(dir $@)
@@ -544,3 +561,56 @@
 $(LOCAL_MODULE)-findbugs : $(findbugs_html)
 
 endif  # full_classes_jar is defined
+
+ifeq ($(LOCAL_USE_JACK),true)
+$(LOCAL_INTERMEDIATE_TARGETS): \
+	PRIVATE_JACK_INTERMEDIATES_DIR := $(intermediates.COMMON)/jack
+
+ifdef full_classes_jar
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_DEBUG_FLAGS := -g
+
+ifdef LOCAL_PROGUARD_ENABLED
+
+ifndef LOCAL_JACK_PROGUARD_FLAGS
+    LOCAL_JACK_PROGUARD_FLAGS := $(LOCAL_PROGUARD_FLAGS)
+endif
+LOCAL_JACK_PROGUARD_FLAGS += $(addprefix -include , $(proguard_flag_files))
+ifdef LOCAL_TEST_MODULE_TO_PROGUARD_WITH
+    $(error $(LOCAL_MODULE): Build with jack when LOCAL_TEST_MODULE_TO_PROGUARD_WITH is defined is not yet implemented)
+endif
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_PROGUARD_FLAGS := $(common_proguard_flags) $(LOCAL_JACK_PROGUARD_FLAGS)
+else  # LOCAL_PROGUARD_ENABLED not defined
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_PROGUARD_FLAGS :=
+endif # LOCAL_PROGUARD_ENABLED defined
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_FLAGS := $(LOCAL_JACK_FLAGS)
+
+jack_all_deps := $(java_sources) $(java_resource_sources) $(full_jack_lib_deps) \
+        $(jar_manifest_file) $(layers_file) $(RenderScript_file_stamp) $(proguard_flag_files) \
+        $(proto_java_sources_file_stamp) $(LOCAL_ADDITIONAL_DEPENDENCIES) $(LOCAL_JARJAR_RULES) \
+        $(LOCAL_MODULE_MAKEFILE) $(JACK_JAR)
+
+ifeq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
+$(full_classes_jack): $(jack_all_deps)
+	@echo Building with Jack: $@
+	$(java-to-jack)
+
+else #LOCAL_IS_STATIC_JAVA_LIBRARY
+$(built_dex_intermediate): PRIVATE_CLASSES_JACK := $(full_classes_jack)
+
+$(built_dex_intermediate): $(jack_all_deps)
+	@echo Building with Jack: $@
+	$(jack-java-to-dex)
+
+$(full_classes_jack): $(built_dex_intermediate)
+# nothing to do it's built as a side effect of $(built_dex_intermediate)
+endif #LOCAL_IS_STATIC_JAVA_LIBRARY
+
+$(noshrob_classes_jack): PRIVATE_JACK_INTERMEDIATES_DIR := $(intermediates.COMMON)/noshrob
+$(noshrob_classes_jack): PRIVATE_JACK_PROGUARD_FLAGS :=
+$(noshrob_classes_jack): $(jack_all_deps)
+	@echo Building with Jack: $@
+	$(java-to-jack)
+endif  # full_classes_jar is defined
+endif # LOCAL_USE_JACK
diff --git a/core/java_library.mk b/core/java_library.mk
index 61dfef0..586172b 100644
--- a/core/java_library.mk
+++ b/core/java_library.mk
@@ -68,8 +68,15 @@
 $(common_javalib.jar): PRIVATE_SOURCE_ARCHIVE := $(full_classes_jarjar_jar)
 $(common_javalib.jar) : $(built_dex) $(java_resource_sources)
 	@echo "target Jar: $(PRIVATE_MODULE) ($@)"
+ifeq ($(LOCAL_USE_JACK),true)
+	$(create-empty-package)
+else
 	$(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@)
+endif
 	$(add-dex-to-package)
+ifeq ($(LOCAL_USE_JACK),true)
+	$(add-carried-jack-resources)
+endif
 
 ifdef LOCAL_DEX_PREOPT
 ifneq ($(dexpreopt_boot_jar_module),) # boot jar
diff --git a/core/main.mk b/core/main.mk
index 48a7ba6..39dd65a 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -915,7 +915,9 @@
   # For uninstallable modules such as static Java library, we have to dist the built file,
   # as <module_name>.<suffix>
   apps_only_dist_built_files := $(foreach m,$(unbundled_build_modules),$(if $(ALL_MODULES.$(m).INSTALLED),,\
-      $(if $(ALL_MODULES.$(m).BUILT),$(ALL_MODULES.$(m).BUILT):$(m)$(suffix $(ALL_MODULES.$(m).BUILT)))))
+      $(if $(ALL_MODULES.$(m).BUILT),$(ALL_MODULES.$(m).BUILT):$(m)$(suffix $(ALL_MODULES.$(m).BUILT)))\
+      $(if $(ALL_MODULES.$(m).AAR),$(ALL_MODULES.$(m).AAR):$(m).aar)\
+      ))
   $(call dist-for-goals,apps_only, $(apps_only_dist_built_files))
 
   ifeq ($(EMMA_INSTRUMENT),true)
diff --git a/core/multi_prebuilt.mk b/core/multi_prebuilt.mk
index bc85cea..ed2fed6 100644
--- a/core/multi_prebuilt.mk
+++ b/core/multi_prebuilt.mk
@@ -76,8 +76,7 @@
      ) \
    ) \
   $(eval LOCAL_MODULE_SUFFIX := $(suffix $(LOCAL_SRC_FILES))) \
-  $(if $(filter user,$(TARGET_BUILD_VARIANT)), \
-    $(eval LOCAL_STRIP_MODULE := $(8))) \
+  $(eval LOCAL_STRIP_MODULE := $(8)) \
   $(eval include $(BUILD_PREBUILT)) \
  )
 endef
diff --git a/core/package_internal.mk b/core/package_internal.mk
index e16c68f..059f121 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -162,6 +162,13 @@
 endif # !custom
 LOCAL_PROGUARD_FLAGS := $(addprefix -include ,$(proguard_options_file)) $(LOCAL_PROGUARD_FLAGS)
 
+ifeq ($(LOCAL_USE_JACK),true)
+ifndef LOCAL_JACK_PROGUARD_FLAGS
+    LOCAL_JACK_PROGUARD_FLAGS := $(LOCAL_PROGUARD_FLAGS)
+endif
+LOCAL_JACK_PROGUARD_FLAGS := $(addprefix -include ,$(proguard_options_file)) $(LOCAL_JACK_PROGUARD_FLAGS)
+endif # LOCAL_USE_JACK
+
 ifeq (true,$(EMMA_INSTRUMENT))
 ifndef LOCAL_EMMA_INSTRUMENT
 # No emma for test apks.
@@ -271,6 +278,18 @@
 # they want to use this module's R.java file.
 $(LOCAL_BUILT_MODULE): $(R_file_stamp)
 
+ifeq ($(LOCAL_USE_JACK),true)
+ifneq ($(built_dex_intermediate),)
+$(built_dex_intermediate): $(R_file_stamp)
+endif
+ifneq ($(noshrob_classes_jack),)
+$(noshrob_classes_jack): $(R_file_stamp)
+endif
+ifneq ($(full_classes_jack),)
+$(full_classes_jack): $(R_file_stamp)
+endif
+endif # LOCAL_USE_JACK
+
 ifneq ($(full_classes_jar),)
 # If full_classes_jar is non-empty, we're building sources.
 # If we're building sources, the initial javac step (which
@@ -386,9 +405,13 @@
 endif
 $(LOCAL_BUILT_MODULE): $(all_res_assets) $(jni_shared_libraries) $(full_android_manifest)
 	@echo "target Package: $(PRIVATE_MODULE) ($@)"
+ifeq ($(LOCAL_USE_JACK),true)
+	$(create-empty-package)
+else
 	$(if $(PRIVATE_SOURCE_ARCHIVE),\
 	  $(call initialize-package-file,$(PRIVATE_SOURCE_ARCHIVE),$@),\
 	  $(create-empty-package))
+endif
 	$(add-assets-to-package)
 ifneq ($(jni_shared_libraries),)
 	$(add-jni-shared-libs-to-package)
@@ -396,6 +419,9 @@
 ifneq ($(full_classes_jar),)
 	$(add-dex-to-package)
 endif
+ifeq ($(LOCAL_USE_JACK),true)
+	$(add-carried-jack-resources)
+endif
 	$(sign-package)
 ifdef LOCAL_DEX_PREOPT
 ifneq (nostripping,$(LOCAL_DEX_PREOPT))
diff --git a/core/pathmap.mk b/core/pathmap.mk
index 2532707..c4dc525 100644
--- a/core/pathmap.mk
+++ b/core/pathmap.mk
@@ -105,6 +105,7 @@
 #
 FRAMEWORKS_SUPPORT_SUBDIRS := \
         annotations \
+        media/protocols \
         v4 \
         v7/gridlayout \
         v7/appcompat \
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index e486531..2a28da3 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -39,6 +39,10 @@
   # Put the built targets of all shared libraries in a common directory
   # to simplify the link line.
   OVERRIDE_BUILT_MODULE_PATH := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)OUT_INTERMEDIATE_LIBRARIES)
+  ifeq ($(LOCAL_IS_HOST_MODULE)$(LOCAL_STRIP_MODULE),)
+    # Strip but not try to add debuglink
+    LOCAL_STRIP_MODULE := no_debuglink
+  endif
 endif
 
 ifneq ($(filter STATIC_LIBRARIES SHARED_LIBRARIES,$(LOCAL_MODULE_CLASS)),)
@@ -59,7 +63,7 @@
 LOCAL_INSTALLED_MODULE_STEM := $(LOCAL_MODULE).apk
 endif
 
-ifeq ($(LOCAL_STRIP_MODULE),true)
+ifneq ($(filter true no_debuglink,$(LOCAL_STRIP_MODULE)),)
   ifdef LOCAL_IS_HOST_MODULE
     $(error Cannot strip host module LOCAL_PATH=$(LOCAL_PATH))
   endif
@@ -71,6 +75,7 @@
   endif
   include $(BUILD_SYSTEM)/dynamic_binary.mk
   built_module := $(linked_module)
+
 else  # LOCAL_STRIP_MODULE not true
   include $(BUILD_SYSTEM)/base_rules.mk
   built_module := $(LOCAL_BUILT_MODULE)
@@ -112,6 +117,8 @@
 endif
 endif
 
+# We need to enclose the above export_includes and my_built_shared_libraries in
+# "LOCAL_STRIP_MODULE not true" because otherwise the rules are defined in dynamic_binary.mk.
 endif  # LOCAL_STRIP_MODULE not true
 
 ifeq ($(LOCAL_MODULE_CLASS),APPS)
@@ -292,6 +299,13 @@
 $(built_module) : $(common_javalib_jar)
 endif # TARGET JAVA_LIBRARIES
 
+ifeq ($(LOCAL_MODULE_CLASS),JAVA_LIBRARIES)
+$(intermediates.COMMON)/classes.jack : $(my_prebuilt_src_file) $(LOCAL_MODULE_MAKEFILE) \
+        $(LOCAL_ADDITIONAL_DEPENDENCIES) $(JILL_JAR) $(JACK_JAR)
+	$(transform-jar-to-jack)
+
+endif # JAVA_LIBRARIES
+
 $(built_module) : $(LOCAL_MODULE_MAKEFILE) $(LOCAL_ADDITIONAL_DEPENDENCIES)
 
 my_prebuilt_src_file :=
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index 02078e0..c692f9f 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -56,8 +56,16 @@
 ifneq ($(LOCAL_PROGUARD_ENABLED),custom)
   proguard_options_file := $(intermediates.COMMON)/proguard_options
 endif
+
 LOCAL_PROGUARD_FLAGS := $(addprefix -include ,$(proguard_options_file)) $(LOCAL_PROGUARD_FLAGS)
 
+ifeq ($(LOCAL_USE_JACK),true)
+ifndef LOCAL_JACK_PROGUARD_FLAGS
+    LOCAL_JACK_PROGUARD_FLAGS := $(LOCAL_PROGUARD_FLAGS)
+endif
+LOCAL_JACK_PROGUARD_FLAGS := $(addprefix -include ,$(proguard_options_file)) $(LOCAL_JACK_PROGUARD_FLAGS)
+endif # LOCAL_USE_JACK
+
 endif  # LOCAL_RESOURCE_DIR
 
 all_res_assets := $(all_resources)
@@ -92,7 +100,8 @@
 
 $(R_file_stamp): PRIVATE_MODULE := $(LOCAL_MODULE)
 # add --non-constant-id to prevent inlining constants.
-$(R_file_stamp): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) --non-constant-id
+# AAR needs text symbol file R.txt.
+$(R_file_stamp): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) --non-constant-id --output-text-symbols $(LOCAL_INTERMEDIATE_SOURCE_DIR)
 $(R_file_stamp): PRIVATE_SOURCE_INTERMEDIATES_DIR := $(LOCAL_INTERMEDIATE_SOURCE_DIR)
 $(R_file_stamp): PRIVATE_ANDROID_MANIFEST := $(full_android_manifest)
 $(R_file_stamp): PRIVATE_RESOURCE_PUBLICS_OUTPUT := $(intermediates.COMMON)/public_resources.xml
@@ -114,9 +123,32 @@
 	$(hide) find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name R.java | xargs cat > $@
 
 $(LOCAL_BUILT_MODULE): $(R_file_stamp)
-ifneq ($(full_classes_jar),)
+ifeq ($(LOCAL_USE_JACK),true)
+$(noshrob_classes_jack): $(R_file_stamp)
+$(full_classes_jack): $(R_file_stamp)
+endif # LOCAL_USE_JACK
 $(full_classes_compiled_jar): $(R_file_stamp)
-endif
+
+# Rule to build AAR, archive including classes.jar, resource, etc.
+built_aar := $(intermediates.COMMON)/javalib.aar
+$(built_aar): PRIVATE_MODULE := $(LOCAL_MODULE)
+$(built_aar): PRIVATE_ANDROID_MANIFEST := $(full_android_manifest)
+$(built_aar): PRIVATE_CLASSES_JAR := $(LOCAL_BUILT_MODULE)
+$(built_aar): PRIVATE_RESOURCE_DIR := $(LOCAL_RESOURCE_DIR)
+$(built_aar): PRIVATE_R_TXT := $(LOCAL_INTERMEDIATE_SOURCE_DIR)/R.txt
+$(built_aar) : $(LOCAL_BUILT_MODULE)
+	@echo "target AAR:  $(PRIVATE_MODULE) ($@)"
+	$(hide) rm -rf $(dir $@)aar && mkdir -p $(dir $@)aar/res
+	$(hide) cp $(PRIVATE_ANDROID_MANIFEST) $(dir $@)aar/AndroidManifest.xml
+	$(hide) cp $(PRIVATE_CLASSES_JAR) $(dir $@)aar/classes.jar
+	# Note: Use "cp -n" to honor the resource overlay rules, if multiple res dirs exist.
+	$(hide) $(foreach res,$(PRIVATE_RESOURCE_DIR),cp -Rfn $(res)/* $(dir $@)aar/res;)
+	$(hide) cp $(PRIVATE_R_TXT) $(dir $@)aar/R.txt
+	$(hide) jar -cMf $@ \
+	  -C $(dir $@)aar .
+
+# Register the aar file.
+ALL_MODULES.$(LOCAL_MODULE).AAR := $(built_aar)
 
 endif  # need_compile_res
 
diff --git a/core/tasks/vendor_module_check.mk b/core/tasks/vendor_module_check.mk
index d8e8ec7..efed1e8 100644
--- a/core/tasks/vendor_module_check.mk
+++ b/core/tasks/vendor_module_check.mk
@@ -22,6 +22,7 @@
         broadcom \
         csr \
         elan \
+        fpc \
         google \
         htc \
         imgtec \
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index d87a032..c36d690 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -41,7 +41,7 @@
   # which is the version that we reveal to the end user.
   # Update this value when the platform version changes (rather
   # than overriding it somewhere else).  Can be an arbitrary string.
-  PLATFORM_VERSION := 5.1
+  PLATFORM_VERSION := MNC
 endif
 
 ifeq "" "$(PLATFORM_SDK_VERSION)"
@@ -59,7 +59,7 @@
 ifeq "" "$(PLATFORM_VERSION_CODENAME)"
   # This is the current development code-name, if the build is not a final
   # release build.  If this is a final release build, it is simply "REL".
-  PLATFORM_VERSION_CODENAME := REL
+  PLATFORM_VERSION_CODENAME := MNC
 
   # This is all of the development codenames that are active.  Should be either
   # the same as PLATFORM_VERSION_CODENAME or a comma-separated list of additional
diff --git a/target/product/base.mk b/target/product/base.mk
index 0d052b5..3f0e7da 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -18,6 +18,7 @@
 PRODUCT_PACKAGES += \
     20-dns.conf \
     95-configured \
+    org.apache.http.legacy \
     appwidget \
     appops \
     am \
@@ -37,6 +38,7 @@
     fsck_msdos \
     ime \
     input \
+    inputflinger \
     javax.obex \
     libandroid \
     libandroid_runtime \
diff --git a/tools/droiddoc/templates-pdk/assets/images/android_logo.png b/tools/droiddoc/templates-pdk/assets/images/android_logo.png
new file mode 100644
index 0000000..4040f3f
--- /dev/null
+++ b/tools/droiddoc/templates-pdk/assets/images/android_logo.png
Binary files differ
diff --git a/tools/droiddoc/templates-pdk/components/masthead.cs b/tools/droiddoc/templates-pdk/components/masthead.cs
index 05437f3..874c11c 100644
--- a/tools/droiddoc/templates-pdk/components/masthead.cs
+++ b/tools/droiddoc/templates-pdk/components/masthead.cs
@@ -1,10 +1,9 @@
-<?cs 
+<?cs
 def:custom_masthead() ?>
   <div id="header">
       <div id="headerLeft">
           <a href="<?cs var:toroot ?>guide/index.html"><img
-              src="<?cs var:toroot ?>assets/images/android-partner-logo.png" alt="Android Platform Development Kit" /></a>
-       
+              src="<?cs var:toroot ?>assets/images/android_logo.png" alt="Android Platform Development Kit" /></a>
       </div>
       <div id="headerRight">
           <div id="headerLinks">