Merge "Fix salt for verity tree generation."
diff --git a/core/Makefile b/core/Makefile
index 8611468..68b76ec 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1165,7 +1165,10 @@
 	  $(HOST_OUT_EXECUTABLES)/simg2img \
 	  $(HOST_OUT_EXECUTABLES)/e2fsck \
 	  $(HOST_OUT_EXECUTABLES)/xdelta3 \
-	  $(HOST_OUT_EXECUTABLES)/syspatch_host
+	  $(HOST_OUT_EXECUTABLES)/syspatch_host \
+	  $(HOST_OUT_EXECUTABLES)/build_verity_tree \
+	  $(HOST_OUT_EXECUTABLES)/verity_signer \
+	  $(HOST_OUT_EXECUTABLES)/append2simg
 
 OTATOOLS := $(DISTTOOLS) \
 	  $(HOST_OUT_EXECUTABLES)/aapt
diff --git a/core/base_rules.mk b/core/base_rules.mk
index 0a67d42..985a933 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -98,16 +98,10 @@
   $(error $(LOCAL_PATH): LOCAL_MODULE_CLASS must contain exactly one word, not "$(LOCAL_MODULE_CLASS)")
 endif
 
-ifndef LOCAL_IS_HOST_MODULE
-my_32_64_bit_suffix := $(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_IS_64_BIT),64,32)
-endif
+my_32_64_bit_suffix := $(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)IS_64_BIT),64,32)
 
 ifneq (true,$(LOCAL_UNINSTALLABLE_MODULE))
-ifndef LOCAL_IS_HOST_MODULE
 my_multilib_module_path := $(strip $(LOCAL_MODULE_PATH_$(my_32_64_bit_suffix)))
-else
-my_multilib_module_path :=
-endif
 ifdef my_multilib_module_path
 my_module_path := $(my_multilib_module_path)
 else
@@ -150,7 +144,7 @@
 my_register_name := $(LOCAL_MODULE)
 ifdef LOCAL_2ND_ARCH_VAR_PREFIX
 ifndef LOCAL_NO_2ND_ARCH_MODULE_SUFFIX
-my_register_name := $(LOCAL_MODULE)$(TARGET_2ND_ARCH_MODULE_SUFFIX)
+my_register_name := $(LOCAL_MODULE)$($(my_prefix)2ND_ARCH_MODULE_SUFFIX)
 endif
 endif
 # Make sure that this IS_HOST/CLASS/MODULE combination is unique.
@@ -518,6 +512,8 @@
 
 $(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_INTERMEDIATES_DIR:= $(intermediates)
 
+$(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_2ND_ARCH_VAR_PREFIX := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+
 # Tell the module and all of its sub-modules who it is.
 $(LOCAL_INTERMEDIATE_TARGETS) : PRIVATE_MODULE:= $(my_register_name)
 
diff --git a/core/binary.mk b/core/binary.mk
index d5709ca..fbfb0ab 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -113,22 +113,20 @@
 my_c_includes := $(LOCAL_C_INCLUDES)
 my_generated_sources := $(LOCAL_GENERATED_SOURCES)
 
-ifndef LOCAL_IS_HOST_MODULE
-my_src_files += $(LOCAL_SRC_FILES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_SRC_FILES_$(my_32_64_bit_suffix))
-my_shared_libraries += $(LOCAL_SHARED_LIBRARIES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_SHARED_LIBRARIES_$(my_32_64_bit_suffix))
-my_cflags += $(LOCAL_CFLAGS_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_CFLAGS_$(my_32_64_bit_suffix))
-my_cppflags += $(LOCAL_CPPFLAGS_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_CPPFLAGS_$(my_32_64_bit_suffix))
-my_ldflags += $(LOCAL_LDFLAGS_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_LDFLAGS_$(my_32_64_bit_suffix))
-my_asflags += $(LOCAL_ASFLAGS_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_ASFLAGS_$(my_32_64_bit_suffix))
-my_c_includes += $(LOCAL_C_INCLUDES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_C_INCLUDES_$(my_32_64_bit_suffix))
-my_generated_sources += $(LOCAL_GENERATED_SOURCES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_GENERATED_SOURCES_$(my_32_64_bit_suffix))
+my_src_files += $(LOCAL_SRC_FILES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_SRC_FILES_$(my_32_64_bit_suffix))
+my_shared_libraries += $(LOCAL_SHARED_LIBRARIES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_SHARED_LIBRARIES_$(my_32_64_bit_suffix))
+my_cflags += $(LOCAL_CFLAGS_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_CFLAGS_$(my_32_64_bit_suffix))
+my_cppflags += $(LOCAL_CPPFLAGS_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_CPPFLAGS_$(my_32_64_bit_suffix))
+my_ldflags += $(LOCAL_LDFLAGS_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_LDFLAGS_$(my_32_64_bit_suffix))
+my_asflags += $(LOCAL_ASFLAGS_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_ASFLAGS_$(my_32_64_bit_suffix))
+my_c_includes += $(LOCAL_C_INCLUDES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_C_INCLUDES_$(my_32_64_bit_suffix))
+my_generated_sources += $(LOCAL_GENERATED_SOURCES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_GENERATED_SOURCES_$(my_32_64_bit_suffix))
 
 # arch-specific static libraries go first so that generic ones can depend on them
-my_static_libraries := $(LOCAL_STATIC_LIBRARIES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_STATIC_LIBRARIES_$(my_32_64_bit_suffix)) $(my_static_libraries)
-my_whole_static_libraries := $(LOCAL_WHOLE_STATIC_LIBRARIES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_WHOLE_STATIC_LIBRARIES_$(my_32_64_bit_suffix)) $(my_whole_static_libraries)
+my_static_libraries := $(LOCAL_STATIC_LIBRARIES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_STATIC_LIBRARIES_$(my_32_64_bit_suffix)) $(my_static_libraries)
+my_whole_static_libraries := $(LOCAL_WHOLE_STATIC_LIBRARIES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) $(LOCAL_WHOLE_STATIC_LIBRARIES_$(my_32_64_bit_suffix)) $(my_whole_static_libraries)
 
-my_cflags := $(filter-out $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_UNSUPPORTED_CFLAGS),$(my_cflags))
-endif
+my_cflags := $(filter-out $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)GLOBAL_UNSUPPORTED_CFLAGS),$(my_cflags))
 
 # Add static HAL libraries
 ifdef LOCAL_HAL_STATIC_LIBRARIES
@@ -236,15 +234,15 @@
 else # LOCAL_IS_HOST_MODULE
 
 ifeq ($(LOCAL_CLANG),true)
-my_host_global_cflags := $(CLANG_HOST_GLOBAL_CFLAGS)
-my_host_global_cppflags := $(CLANG_HOST_GLOBAL_CPPFLAGS)
-my_host_global_ldflags := $(CLANG_HOST_GLOBAL_LDFLAGS)
-my_host_c_includes := $(HOST_C_INCLUDES) $(CLANG_CONFIG_EXTRA_HOST_C_INCLUDES)
+my_host_global_cflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_HOST_GLOBAL_CFLAGS)
+my_host_global_cppflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_HOST_GLOBAL_CPPFLAGS)
+my_host_global_ldflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_HOST_GLOBAL_LDFLAGS)
+my_host_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)HOST_C_INCLUDES) $(CLANG_CONFIG_EXTRA_HOST_C_INCLUDES)
 else
-my_host_global_cflags := $(HOST_GLOBAL_CFLAGS)
-my_host_global_cppflags := $(HOST_GLOBAL_CPPFLAGS)
-my_host_global_ldflags := $(HOST_GLOBAL_LDFLAGS)
-my_host_c_includes := $(HOST_C_INCLUDES)
+my_host_global_cflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_CFLAGS)
+my_host_global_cppflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_CPPFLAGS)
+my_host_global_ldflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_LDFLAGS)
+my_host_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)HOST_C_INCLUDES)
 endif # LOCAL_CLANG
 
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_HOST_C_INCLUDES := $(my_host_c_includes)
diff --git a/core/clang/HOST_x86.mk b/core/clang/HOST_x86.mk
index ee61e5e..510a74d 100644
--- a/core/clang/HOST_x86.mk
+++ b/core/clang/HOST_x86.mk
@@ -1,6 +1,6 @@
 
 include $(BUILD_SYSTEM)/clang/x86.mk
-include $(BUILD_SYSTEM)/clang/x86_common.mk
+include $(BUILD_SYSTEM)/clang/HOST_x86_common.mk
 
 ifeq ($(HOST_OS),linux)
 CLANG_CONFIG_x86_HOST_TRIPLE := i686-linux-gnu
@@ -44,21 +44,21 @@
   $(CLANG_CONFIG_x86_HOST_COMBO_EXTRA_LDFLAGS) \
   -target $(CLANG_CONFIG_x86_HOST_TRIPLE)
 
-define convert-to-host-clang-flags
+define $(clang_2nd_arch_prefix)convert-to-host-clang-flags
   $(strip \
   $(call subst-clang-incompatible-x86-flags,\
   $(filter-out $(CLANG_CONFIG_x86_UNKNOWN_CFLAGS),\
   $(1))))
 endef
 
-CLANG_HOST_GLOBAL_CFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_GLOBAL_CFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_GLOBAL_CFLAGS := \
+  $(call $(clang_2nd_arch_prefix)convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_GLOBAL_CFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_EXTRA_CFLAGS)
 
-CLANG_HOST_GLOBAL_CPPFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_GLOBAL_CPPFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_GLOBAL_CPPFLAGS := \
+  $(call $(clang_2nd_arch_prefix)convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_GLOBAL_CPPFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_EXTRA_CPPFLAGS)
 
-CLANG_HOST_GLOBAL_LDFLAGS := \
-  $(call convert-to-host-clang-flags,$(HOST_GLOBAL_LDFLAGS)) \
+$(clang_2nd_arch_prefix)CLANG_HOST_GLOBAL_LDFLAGS := \
+  $(call $(clang_2nd_arch_prefix)convert-to-host-clang-flags,$($(clang_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS)) \
   $(CLANG_CONFIG_x86_HOST_EXTRA_LDFLAGS)
diff --git a/core/clang/HOST_x86_64.mk b/core/clang/HOST_x86_64.mk
index d60e15f..6b94525 100644
--- a/core/clang/HOST_x86_64.mk
+++ b/core/clang/HOST_x86_64.mk
@@ -1,6 +1,6 @@
 
 include $(BUILD_SYSTEM)/clang/x86_64.mk
-include $(BUILD_SYSTEM)/clang/x86_common.mk
+include $(BUILD_SYSTEM)/clang/HOST_x86_common.mk
 
 ifeq ($(HOST_OS),linux)
 CLANG_CONFIG_x86_64_HOST_TRIPLE := x86_64-linux-gnu
diff --git a/core/clang/HOST_x86_common.mk b/core/clang/HOST_x86_common.mk
new file mode 100644
index 0000000..0241cb6
--- /dev/null
+++ b/core/clang/HOST_x86_common.mk
@@ -0,0 +1,56 @@
+# Shared by HOST_x86.mk and HOST_x86_64.mk.
+
+ifeq ($(HOST_OS),darwin)
+# nothing required here yet
+endif
+
+ifeq ($(HOST_OS),linux)
+CLANG_CONFIG_x86_LINUX_HOST_EXTRA_ASFLAGS := \
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
+  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
+  -no-integrated-as
+
+CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS := \
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
+  -no-integrated-as
+
+ifneq ($(strip $($(clang_2nd_arch_prefix)HOST_IS_64_BIT)),)
+CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS := \
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
+  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6 \
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/x86_64-linux \
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/backward \
+  -no-integrated-as
+
+CLANG_CONFIG_x86_LINUX_HOST_EXTRA_LDFLAGS := \
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
+  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
+  -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
+  -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6 \
+  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6 \
+  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib64/ \
+  -no-integrated-as
+else
+CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS := \
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
+  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6 \
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/x86_64-linux/32 \
+  -isystem $($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/backward \
+  -no-integrated-as
+
+CLANG_CONFIG_x86_LINUX_HOST_EXTRA_LDFLAGS := \
+  --gcc-toolchain=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG) \
+  --sysroot=$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
+  -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
+  -B$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6/32 \
+  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6/32 \
+  -L$($(clang_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib32/ \
+  -no-integrated-as
+endif
+endif  # Linux
+
+ifeq ($(HOST_OS),windows)
+# nothing required here yet
+endif
diff --git a/core/clang/config.mk b/core/clang/config.mk
index c0be37a..56d467b 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -6,6 +6,11 @@
 WITHOUT_HOST_CLANG := true
 endif
 
+# We don't have 64-bit host prebuilts yet.
+ifeq (true,$(HOST_IS_64_BIT))
+FORCE_BUILD_LLVM_COMPONENTS := true
+endif
+
 LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.5/bin
 LLVM_PREBUILTS_HEADER_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.5/lib/clang/3.5/include/
 
@@ -47,10 +52,13 @@
 CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
 
 # HOST config
-ifneq ($(strip $(BUILD_HOST_64bit)),)
-include $(BUILD_SYSTEM)/clang/HOST_x86_64.mk
-else
+clang_2nd_arch_prefix :=
 include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
+
+# HOST_2ND_ARCH config
+ifdef HOST_2ND_ARCH
+clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
 endif
 
 # TARGET config
diff --git a/core/clang/x86_common.mk b/core/clang/x86_common.mk
deleted file mode 100644
index 0bb565f..0000000
--- a/core/clang/x86_common.mk
+++ /dev/null
@@ -1,54 +0,0 @@
-ifeq ($(HOST_OS),darwin)
-# nothing required here yet
-endif
-
-ifeq ($(HOST_OS),linux)
-CLANG_CONFIG_x86_LINUX_HOST_EXTRA_ASFLAGS := \
-  --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) \
-  --sysroot=$(HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-  -no-integrated-as
-
-CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CFLAGS := \
-  --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) \
-  -no-integrated-as
-
-ifneq ($(strip $(BUILD_HOST_64bit)),)
-CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS :=   \
-  --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) \
-  --sysroot=$(HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-  -isystem $(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6 \
-  -isystem $(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/x86_64-linux \
-  -isystem $(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/backward \
-  -no-integrated-as
-
-CLANG_CONFIG_x86_LINUX_HOST_EXTRA_LDFLAGS := \
-  --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) \
-  --sysroot=$(HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-  -B$(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
-  -B$(HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6 \
-  -L$(HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6 \
-  -L$(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib64/ \
-  -no-integrated-as
-else
-CLANG_CONFIG_x86_LINUX_HOST_EXTRA_CPPFLAGS :=   \
-  --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) \
-  --sysroot=$(HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-  -isystem $(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6 \
-  -isystem $(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/x86_64-linux/32 \
-  -isystem $(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/include/c++/4.6/backward \
-  -no-integrated-as
-
-CLANG_CONFIG_x86_LINUX_HOST_EXTRA_LDFLAGS := \
-  --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) \
-  --sysroot=$(HOST_TOOLCHAIN_FOR_CLANG)/sysroot \
-  -B$(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/bin \
-  -B$(HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6/32 \
-  -L$(HOST_TOOLCHAIN_FOR_CLANG)/lib/gcc/x86_64-linux/4.6/32 \
-  -L$(HOST_TOOLCHAIN_FOR_CLANG)/x86_64-linux/lib32/ \
-  -no-integrated-as
-endif
-endif
-
-ifeq ($(HOST_OS),windows)
-# nothing required here yet
-endif
\ No newline at end of file
diff --git a/core/cleanbuild.mk b/core/cleanbuild.mk
index dfdf43d..fc56604 100644
--- a/core/cleanbuild.mk
+++ b/core/cleanbuild.mk
@@ -179,11 +179,13 @@
 	$(HOST_OUT)/obj/NOTICE_FILES \
 	$(HOST_OUT)/sdk \
 	$(PRODUCT_OUT)/*.img \
+	$(PRODUCT_OUT)/*.ini \
 	$(PRODUCT_OUT)/*.txt \
 	$(PRODUCT_OUT)/*.xlb \
 	$(PRODUCT_OUT)/*.zip \
 	$(PRODUCT_OUT)/kernel \
 	$(PRODUCT_OUT)/data \
+	$(PRODUCT_OUT)/skin \
 	$(PRODUCT_OUT)/obj/APPS \
 	$(PRODUCT_OUT)/obj/NOTICE_FILES \
 	$(PRODUCT_OUT)/obj/PACKAGING \
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 1902d57..f30e170 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -122,7 +122,7 @@
 LOCAL_RENDERSCRIPT_TARGET_API:=
 LOCAL_BUILD_HOST_DEX:=
 LOCAL_DEX_PREOPT:= # '',true,false,nostripping
-LOCAL_DEX_PREOPT_IMAGE:=
+LOCAL_DEX_PREOPT_IMAGE_LOCATION:=
 LOCAL_PROTOC_OPTIMIZE_TYPE:= # lite(default),micro,nano,full
 LOCAL_PROTOC_FLAGS:=
 LOCAL_PROTO_JAVA_OUTPUT_PARAMS:=
@@ -154,6 +154,10 @@
 LOCAL_MODULE_TARGET_ARCH_WARN:=
 LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH:=
 LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH_WARN:=
+LOCAL_MODULE_HOST_ARCH:=
+LOCAL_MODULE_HOST_ARCH_WARN:=
+LOCAL_MODULE_UNSUPPORTED_HOST_ARCH:=
+LOCAL_MODULE_UNSUPPORTED_HOST_ARCH_WARN:=
 
 # arch specific variables
 LOCAL_SRC_FILES_$(TARGET_ARCH):=
@@ -182,6 +186,32 @@
 LOCAL_GENERATED_SOURCES_$(TARGET_2ND_ARCH):=
 LOCAL_REQUIRED_MODULES_$(TARGET_2ND_ARCH):=
 endif
+LOCAL_SRC_FILES_$(HOST_ARCH):=
+LOCAL_CFLAGS_$(HOST_ARCH):=
+LOCAL_CPPFLAGS_$(HOST_ARCH):=
+LOCAL_C_INCLUDES_$(HOST_ARCH):=
+LOCAL_ASFLAGS_$(HOST_ARCH):=
+LOCAL_NO_CRT_$(HOST_ARCH):=
+LOCAL_LDFLAGS_$(HOST_ARCH):=
+LOCAL_SHARED_LIBRARIES_$(HOST_ARCH):=
+LOCAL_STATIC_LIBRARIES_$(HOST_ARCH):=
+LOCAL_WHOLE_STATIC_LIBRARIES_$(HOST_ARCH):=
+LOCAL_GENERATED_SOURCES_$(HOST_ARCH):=
+LOCAL_REQUIRED_MODULES_$(HOST_ARCH):=
+ifdef HOST_2ND_ARCH
+LOCAL_SRC_FILES_$(HOST_2ND_ARCH):=
+LOCAL_CFLAGS_$(HOST_2ND_ARCH):=
+LOCAL_CPPFLAGS_$(HOST_2ND_ARCH):=
+LOCAL_C_INCLUDES_$(HOST_2ND_ARCH):=
+LOCAL_ASFLAGS_$(HOST_2ND_ARCH):=
+LOCAL_NO_CRT_$(HOST_2ND_ARCH):=
+LOCAL_LDFLAGS_$(HOST_2ND_ARCH):=
+LOCAL_SHARED_LIBRARIES_$(HOST_2ND_ARCH):=
+LOCAL_STATIC_LIBRARIES_$(HOST_2ND_ARCH):=
+LOCAL_WHOLE_STATIC_LIBRARIES_$(HOST_2ND_ARCH):=
+LOCAL_GENERATED_SOURCES_$(HOST_2ND_ARCH):=
+LOCAL_REQUIRED_MODULES_$(HOST_2ND_ARCH):=
+endif
 
 LOCAL_SRC_FILES_32:=
 LOCAL_SRC_FILES_64:=
diff --git a/core/combo/HOST_darwin-x86.mk b/core/combo/HOST_darwin-x86.mk
index b819f36..4a2bfe3 100644
--- a/core/combo/HOST_darwin-x86.mk
+++ b/core/combo/HOST_darwin-x86.mk
@@ -17,115 +17,75 @@
 # Configuration for Darwin (Mac OS X) on x86.
 # Included by combo/select.mk
 
-ifneq ($(strip $(BUILD_HOST_64bit)),)
-# By default we build everything in 32-bit, because it gives us
-# more consistency between the host tools and the target.
-# BUILD_HOST_64bit=1 overrides it for tool like emulator
-# which can benefit from 64-bit host arch.
-HOST_GLOBAL_CFLAGS += -m64
-HOST_GLOBAL_LDFLAGS += -m64
-else
-HOST_GLOBAL_CFLAGS += -m32
-HOST_GLOBAL_LDFLAGS += -m32
-endif # BUILD_HOST_64bit
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -m32
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -m32
 
 ifneq ($(strip $(BUILD_HOST_static)),)
 # Statically-linked binaries are desirable for sandboxed environment
-HOST_GLOBAL_LDFLAGS += -static
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -static
 endif # BUILD_HOST_static
 
 # Workaround differences in inttypes.h between host and target.
 # See bug 12708004.
-HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
 
-build_mac_version := $(shell sw_vers -productVersion)
+include $(BUILD_COMBOS)/mac_version.mk
 
-mac_sdk_versions_supported :=  10.6 10.7 10.8
-ifneq ($(strip $(MAC_SDK_VERSION)),)
-mac_sdk_version := $(MAC_SDK_VERSION)
-ifeq ($(filter $(mac_sdk_version),$(mac_sdk_versions_supported)),)
-$(warning ****************************************************************)
-$(warning * MAC_SDK_VERSION $(MAC_SDK_VERSION) isn't one of the supported $(mac_sdk_versions_supported))
-$(warning ****************************************************************)
-$(error Stop.)
-endif
-else
-mac_sdk_versions_installed := $(shell xcodebuild -showsdks | grep macosx | sort | sed -e "s/.*macosx//g")
-mac_sdk_version := $(firstword $(filter $(mac_sdk_versions_installed), $(mac_sdk_versions_supported)))
-ifeq ($(mac_sdk_version),)
-mac_sdk_version := $(firstword $(mac_sdk_versions_supported))
-endif
-endif
-
-mac_sdk_path := $(shell xcode-select -print-path)
-# try /Applications/Xcode*.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.?.sdk
-#  or /Volume/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.?.sdk
-mac_sdk_root := $(mac_sdk_path)/Platforms/MacOSX.platform/Developer/SDKs/MacOSX$(mac_sdk_version).sdk
-ifeq ($(wildcard $(mac_sdk_root)),)
-# try legacy /Developer/SDKs/MacOSX10.?.sdk
-mac_sdk_root := /Developer/SDKs/MacOSX$(mac_sdk_version).sdk
-endif
-ifeq ($(wildcard $(mac_sdk_root)),)
-$(warning *****************************************************)
-$(warning * Can not find SDK $(mac_sdk_version) at $(mac_sdk_root))
-$(warning *****************************************************)
-$(error Stop.)
-endif
-
-ifeq ($(mac_sdk_version),10.6)
-  gcc_darwin_version := 10
-else
-  gcc_darwin_version := 11
-endif
-
-HOST_TOOLCHAIN_ROOT := prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1
-HOST_TOOLCHAIN_PREFIX := $(HOST_TOOLCHAIN_ROOT)/bin/i686-apple-darwin$(gcc_darwin_version)
+$(combo_2nd_arch_prefix)HOST_TOOLCHAIN_ROOT := prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1
+$(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_ROOT)/bin/i686-apple-darwin$(gcc_darwin_version)
 # Don't do anything if the toolchain is not there
-ifneq (,$(strip $(wildcard $(HOST_TOOLCHAIN_PREFIX)-gcc)))
-HOST_CC  := $(HOST_TOOLCHAIN_PREFIX)-gcc
-HOST_CXX := $(HOST_TOOLCHAIN_PREFIX)-g++
+ifneq (,$(strip $(wildcard $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)-gcc)))
+$(combo_2nd_arch_prefix)HOST_CC  := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)-gcc
+$(combo_2nd_arch_prefix)HOST_CXX := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)-g++
 ifeq ($(mac_sdk_version),10.8)
 # Mac SDK 10.8 no longer has stdarg.h, etc
-host_toolchain_header := $(HOST_TOOLCHAIN_ROOT)/lib/gcc/i686-apple-darwin$(gcc_darwin_version)/4.2.1/include
-HOST_GLOBAL_CFLAGS += -isystem $(host_toolchain_header)
+host_toolchain_header := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_ROOT)/lib/gcc/i686-apple-darwin$(gcc_darwin_version)/4.2.1/include
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -isystem $(host_toolchain_header)
 endif
 else
-HOST_CC := gcc
-HOST_CXX := g++
+$(combo_2nd_arch_prefix)HOST_CC := gcc
+$(combo_2nd_arch_prefix)HOST_CXX := g++
 endif # $(HOST_TOOLCHAIN_PREFIX)-gcc exists
-HOST_AR := $(AR)
-HOST_STRIP := $(STRIP)
-HOST_STRIP_COMMAND = $(HOST_STRIP) --strip-all $< -o $@
 
-HOST_GLOBAL_CFLAGS += -isysroot $(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version) -DMACOSX_DEPLOYMENT_TARGET=$(mac_sdk_version)
-HOST_GLOBAL_LDFLAGS += -isysroot $(mac_sdk_root) -Wl,-syslibroot,$(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version)
+# gcc location for clang; to be updated when clang is updated
+# HOST_TOOLCHAIN_ROOT is a Darwin-specific define
+$(combo_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_ROOT)
 
-HOST_GLOBAL_CFLAGS += -fPIC -funwind-tables
-HOST_NO_UNDEFINED_LDFLAGS := -Wl,-undefined,error
+$(combo_2nd_arch_prefix)HOST_AR := $(AR)
 
-HOST_SHLIB_SUFFIX := .dylib
-HOST_JNILIB_SUFFIX := .jnilib
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -isysroot $(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version) -DMACOSX_DEPLOYMENT_TARGET=$(mac_sdk_version)
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -isysroot $(mac_sdk_root) -Wl,-syslibroot,$(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version)
 
-HOST_GLOBAL_CFLAGS += \
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -fPIC -funwind-tables
+$(combo_2nd_arch_prefix)HOST_NO_UNDEFINED_LDFLAGS := -Wl,-undefined,error
+
+$(combo_2nd_arch_prefix)HOST_SHLIB_SUFFIX := .dylib
+$(combo_2nd_arch_prefix)HOST_JNILIB_SUFFIX := .jnilib
+
+# TODO: add AndroidConfig.h for darwin-x86_64
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += \
     -include $(call select-android-config-h,darwin-x86)
 
 ifneq ($(filter 10.7 10.7.% 10.8 10.8.%, $(build_mac_version)),)
-       HOST_RUN_RANLIB_AFTER_COPYING := false
+       $(combo_2nd_arch_prefix)HOST_RUN_RANLIB_AFTER_COPYING := false
 else
-       HOST_RUN_RANLIB_AFTER_COPYING := true
+       $(combo_2nd_arch_prefix)HOST_RUN_RANLIB_AFTER_COPYING := true
        PRE_LION_DYNAMIC_LINKER_OPTIONS := -Wl,-dynamic
 endif
-HOST_GLOBAL_ARFLAGS := cqs
+$(combo_2nd_arch_prefix)HOST_GLOBAL_ARFLAGS := cqs
+
+############################################################
+## Macros after this line are shared by the 64-bit config.
 
 HOST_CUSTOM_LD_COMMAND := true
 
 define transform-host-o-to-shared-lib-inner
 $(hide) $(PRIVATE_CXX) \
         -dynamiclib -single_module -read_only_relocs suppress \
-        $(HOST_GLOBAL_LD_DIRS) \
-	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
-	   $(PRIVATE_HOST_GLOBAL_LDFLAGS) \
-	) \
+        $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_LD_DIRS) \
+        $(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
+            $(PRIVATE_HOST_GLOBAL_LDFLAGS) \
+        ) \
         $(PRIVATE_ALL_OBJECTS) \
         $(addprefix -force_load , $(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
         $(call normalize-host-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
@@ -133,34 +93,28 @@
         $(PRIVATE_LDLIBS) \
         -o $@ \
         -install_name @rpath/$(notdir $@) \
-        -Wl,-rpath,@loader_path/../lib \
-        $(PRIVATE_LDFLAGS) \
-        $(HOST_LIBGCC)
+        -Wl,-rpath,@loader_path/../$(notdir $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES)) \
+        $(PRIVATE_LDFLAGS)
 endef
 
 define transform-host-o-to-executable-inner
 $(hide) $(PRIVATE_CXX) \
-        -Wl,-rpath,@loader_path/../lib \
+        -Wl,-rpath,@loader_path/../$(notdir $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES)) \
         -o $@ \
         $(PRE_LION_DYNAMIC_LINKER_OPTIONS) -Wl,-headerpad_max_install_names \
-        $(HOST_GLOBAL_LD_DIRS) \
-	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
-	   $(PRIVATE_HOST_GLOBAL_LDFLAGS) \
-	) \
+        $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_LD_DIRS) \
+        $(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
+           $(PRIVATE_HOST_GLOBAL_LDFLAGS) \
+        ) \
         $(call normalize-host-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
         $(PRIVATE_ALL_OBJECTS) \
         $(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
         $(call normalize-host-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
         $(PRIVATE_LDFLAGS) \
-        $(PRIVATE_LDLIBS) \
-        $(HOST_LIBGCC)
+        $(PRIVATE_LDLIBS)
 endef
 
 # $(1): The file to check
 define get-file-size
 stat -f "%z" $(1)
 endef
-
-# gcc location for clang; to be updated when clang is updated
-# HOST_TOOLCHAIN_ROOT is a Darwin-specific define
-HOST_TOOLCHAIN_FOR_CLANG := $(HOST_TOOLCHAIN_ROOT)
\ No newline at end of file
diff --git a/core/combo/HOST_darwin-x86_64.mk b/core/combo/HOST_darwin-x86_64.mk
new file mode 100644
index 0000000..8ad3ba7
--- /dev/null
+++ b/core/combo/HOST_darwin-x86_64.mk
@@ -0,0 +1,80 @@
+#
+# Copyright (C) 2006 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Configuration for Darwin (Mac OS X) on x86_64.
+# Included by combo/select.mk
+
+HOST_IS_64_BIT := true
+
+HOST_GLOBAL_CFLAGS += -m64
+HOST_GLOBAL_LDFLAGS += -m64
+
+ifneq ($(strip $(BUILD_HOST_static)),)
+# Statically-linked binaries are desirable for sandboxed environment
+HOST_GLOBAL_LDFLAGS += -static
+endif # BUILD_HOST_static
+
+# Workaround differences in inttypes.h between host and target.
+# See bug 12708004.
+HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
+
+include $(BUILD_COMBOS)/mac_version.mk
+
+HOST_TOOLCHAIN_ROOT := prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1
+HOST_TOOLCHAIN_PREFIX := $(HOST_TOOLCHAIN_ROOT)/bin/i686-apple-darwin$(gcc_darwin_version)
+# Don't do anything if the toolchain is not there
+ifneq (,$(strip $(wildcard $(HOST_TOOLCHAIN_PREFIX)-gcc)))
+HOST_CC  := $(HOST_TOOLCHAIN_PREFIX)-gcc
+HOST_CXX := $(HOST_TOOLCHAIN_PREFIX)-g++
+ifeq ($(mac_sdk_version),10.8)
+# Mac SDK 10.8 no longer has stdarg.h, etc
+host_toolchain_header := $(HOST_TOOLCHAIN_ROOT)/lib/gcc/i686-apple-darwin$(gcc_darwin_version)/4.2.1/include
+HOST_GLOBAL_CFLAGS += -isystem $(host_toolchain_header)
+endif
+else
+HOST_CC := gcc
+HOST_CXX := g++
+endif # $(HOST_TOOLCHAIN_PREFIX)-gcc exists
+
+# gcc location for clang; to be updated when clang is updated
+# HOST_TOOLCHAIN_ROOT is a Darwin-specific define
+HOST_TOOLCHAIN_FOR_CLANG := $(HOST_TOOLCHAIN_ROOT)
+
+HOST_AR := $(AR)
+
+HOST_GLOBAL_CFLAGS += -isysroot $(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version) -DMACOSX_DEPLOYMENT_TARGET=$(mac_sdk_version)
+HOST_GLOBAL_LDFLAGS += -isysroot $(mac_sdk_root) -Wl,-syslibroot,$(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version)
+
+HOST_GLOBAL_CFLAGS += -fPIC -funwind-tables
+HOST_NO_UNDEFINED_LDFLAGS := -Wl,-undefined,error
+
+HOST_SHLIB_SUFFIX := .dylib
+HOST_JNILIB_SUFFIX := .jnilib
+
+HOST_GLOBAL_CFLAGS += \
+    -include $(call select-android-config-h,darwin-x86)
+
+ifneq ($(filter 10.7 10.7.% 10.8 10.8.%, $(build_mac_version)),)
+       HOST_RUN_RANLIB_AFTER_COPYING := false
+else
+       HOST_RUN_RANLIB_AFTER_COPYING := true
+endif
+HOST_GLOBAL_ARFLAGS := cqs
+
+# We Reuse the following functions with the same name from HOST_darwin-x86.mk:
+# transform-host-o-to-shared-lib-inner
+# transform-host-o-to-executable-inner
+# get-file-size
diff --git a/core/combo/HOST_linux-x86.mk b/core/combo/HOST_linux-x86.mk
index 1472849..c931937 100644
--- a/core/combo/HOST_linux-x86.mk
+++ b/core/combo/HOST_linux-x86.mk
@@ -17,49 +17,46 @@
 # Configuration for builds hosted on linux-x86.
 # Included by combo/select.mk
 
-# $(1): The file to check
-define get-file-size
-stat --format "%s" "$(1)" | tr -d '\n'
-endef
-
-ifeq ($(strip $(HOST_TOOLCHAIN_PREFIX)),)
-HOST_TOOLCHAIN_PREFIX := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/bin/x86_64-linux-
+ifeq ($(strip $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)),)
+$(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/bin/x86_64-linux-
 endif
 # Don't do anything if the toolchain is not there
-ifneq (,$(strip $(wildcard $(HOST_TOOLCHAIN_PREFIX)gcc)))
-HOST_CC  := $(HOST_TOOLCHAIN_PREFIX)gcc
-HOST_CXX := $(HOST_TOOLCHAIN_PREFIX)g++
-HOST_AR  := $(HOST_TOOLCHAIN_PREFIX)ar
-endif # $(HOST_TOOLCHAIN_PREFIX)gcc exists
+ifneq (,$(strip $(wildcard $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)gcc)))
+$(combo_2nd_arch_prefix)HOST_CC  := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)gcc
+$(combo_2nd_arch_prefix)HOST_CXX := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)g++
+$(combo_2nd_arch_prefix)HOST_AR  := $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)ar
+endif # $($(combo_2nd_arch_prefix)HOST_TOOLCHAIN_PREFIX)gcc exists
 
-HOST_TOOLCHAIN_FOR_CLANG := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/
-ifneq ($(strip $(BUILD_HOST_64bit)),)
-# By default we build everything in 32-bit, because it gives us
-# more consistency between the host tools and the target.
-# BUILD_HOST_64bit=1 overrides it for tool like emulator
-# which can benefit from 64-bit host arch.
-HOST_GLOBAL_CFLAGS += -m64 -Wa,--noexecstack
-HOST_GLOBAL_LDFLAGS += -m64 -Wl,-z,noexecstack
-else
+# gcc location for clang; to be updated when clang is updated
+$(combo_2nd_arch_prefix)HOST_TOOLCHAIN_FOR_CLANG := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/
+
 # We expect SSE3 floating point math.
-HOST_GLOBAL_CFLAGS += -mstackrealign -msse3 -mfpmath=sse -m32 -Wa,--noexecstack
-HOST_GLOBAL_LDFLAGS += -m32 -Wl,-z,noexecstack
-endif # BUILD_HOST_64bit
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -mstackrealign -msse3 -mfpmath=sse -m32 -Wa,--noexecstack
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -m32 -Wl,-z,noexecstack
 
 ifneq ($(strip $(BUILD_HOST_static)),)
 # Statically-linked binaries are desirable for sandboxed environment
-HOST_GLOBAL_LDFLAGS += -static
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -static
 endif # BUILD_HOST_static
 
-HOST_GLOBAL_CFLAGS += -fPIC \
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -fPIC \
   -no-canonical-prefixes \
   -include $(call select-android-config-h,linux-x86)
 
 # Disable new longjmp in glibc 2.11 and later. See bug 2967937.
-HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
 
 # Workaround differences in inttypes.h between host and target.
 # See bug 12708004.
-HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
 
-HOST_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
+$(combo_2nd_arch_prefix)HOST_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
+
+
+############################################################
+## Macros after this line are shared by the 64-bit config.
+
+# $(1): The file to check
+define get-file-size
+stat --format "%s" "$(1)" | tr -d '\n'
+endef
diff --git a/core/combo/HOST_linux-x86_64.mk b/core/combo/HOST_linux-x86_64.mk
new file mode 100644
index 0000000..8f3a311
--- /dev/null
+++ b/core/combo/HOST_linux-x86_64.mk
@@ -0,0 +1,55 @@
+#
+# Copyright (C) 2006 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.
+#
+
+# Configuration for builds hosted on linux-x86_64.
+# Included by combo/select.mk
+
+HOST_IS_64_BIT := true
+
+ifeq ($(strip $(HOST_TOOLCHAIN_PREFIX)),)
+HOST_TOOLCHAIN_PREFIX := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/bin/x86_64-linux-
+endif
+# Don't do anything if the toolchain is not there
+ifneq (,$(strip $(wildcard $(HOST_TOOLCHAIN_PREFIX)gcc)))
+HOST_CC  := $(HOST_TOOLCHAIN_PREFIX)gcc
+HOST_CXX := $(HOST_TOOLCHAIN_PREFIX)g++
+HOST_AR  := $(HOST_TOOLCHAIN_PREFIX)ar
+endif # $(HOST_TOOLCHAIN_PREFIX)gcc exists
+
+# gcc location for clang; to be updated when clang is updated
+HOST_TOOLCHAIN_FOR_CLANG := prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/
+
+HOST_GLOBAL_CFLAGS += -m64 -Wa,--noexecstack
+HOST_GLOBAL_LDFLAGS += -m64 -Wl,-z,noexecstack
+
+ifneq ($(strip $(BUILD_HOST_static)),)
+# Statically-linked binaries are desirable for sandboxed environment
+HOST_GLOBAL_LDFLAGS += -static
+endif # BUILD_HOST_static
+
+# TODO: Add AndroidConfig.h for linux-x86_64
+HOST_GLOBAL_CFLAGS += -fPIC \
+  -no-canonical-prefixes \
+  -include $(call select-android-config-h,linux-x86)
+
+# Disable new longjmp in glibc 2.11 and later. See bug 2967937.
+HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
+
+# Workaround differences in inttypes.h between host and target.
+# See bug 12708004.
+HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS
+
+HOST_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
diff --git a/core/combo/HOST_windows-x86.mk b/core/combo/HOST_windows-x86.mk
index cd047a1..4d871d8 100644
--- a/core/combo/HOST_windows-x86.mk
+++ b/core/combo/HOST_windows-x86.mk
@@ -27,32 +27,29 @@
 ifneq ($(strip $(USE_MINGW)),)
 HOST_ACP_UNAVAILABLE := true
 TOOLS_EXE_SUFFIX :=
-HOST_GLOBAL_CFLAGS += -DUSE_MINGW
-ifneq ($(strip $(BUILD_HOST_64bit)),)
-TOOLS_PREFIX := /usr/bin/amd64-mingw32msvc-
-HOST_C_INCLUDES += /usr/lib/gcc/amd64-mingw32msvc/4.4.2/include
-HOST_GLOBAL_LD_DIRS += -L/usr/amd64-mingw32msvc/lib
-else
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -DUSE_MINGW
 TOOLS_PREFIX := /usr/bin/i586-mingw32msvc-
-HOST_C_INCLUDES += /usr/lib/gcc/i586-mingw32msvc/3.4.4/include
-HOST_GLOBAL_LD_DIRS += -L/usr/i586-mingw32msvc/lib
-endif # BUILD_HOST_64bit
+$(combo_2nd_arch_prefix)HOST_C_INCLUDES += /usr/lib/gcc/i586-mingw32msvc/3.4.4/include
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LD_DIRS += -L/usr/i586-mingw32msvc/lib
 endif # USE_MINGW
 endif # Linux
 
 # Workaround differences in inttypes.h between host and target.
 # See bug 12708004.
-HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS -D__USE_MINGW_ANSI_STDIO
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS -D__USE_MINGW_ANSI_STDIO
 
-HOST_CC := $(TOOLS_PREFIX)gcc$(TOOLS_EXE_SUFFIX)
-HOST_CXX := $(TOOLS_PREFIX)g++$(TOOLS_EXE_SUFFIX)
-HOST_AR := $(TOOLS_PREFIX)ar$(TOOLS_EXE_SUFFIX)
+$(combo_2nd_arch_prefix)HOST_CC := $(TOOLS_PREFIX)gcc$(TOOLS_EXE_SUFFIX)
+$(combo_2nd_arch_prefix)HOST_CXX := $(TOOLS_PREFIX)g++$(TOOLS_EXE_SUFFIX)
+$(combo_2nd_arch_prefix)HOST_AR := $(TOOLS_PREFIX)ar$(TOOLS_EXE_SUFFIX)
 
-HOST_GLOBAL_CFLAGS += -include $(call select-android-config-h,windows)
-HOST_GLOBAL_LDFLAGS += --enable-stdcall-fixup
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += \
+    -include $(call select-android-config-h,windows)
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += \
+    --enable-stdcall-fixup
+
 ifneq ($(strip $(BUILD_HOST_static)),)
 # Statically-linked binaries are desirable for sandboxed environment
-HOST_GLOBAL_LDFLAGS += -static
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -static
 endif # BUILD_HOST_static
 
 # when building under Cygwin, ensure that we use Mingw compilation by default.
@@ -66,11 +63,14 @@
 #
 ifneq ($(findstring CYGWIN,$(UNAME)),)
 ifeq ($(strip $(USE_CYGWIN)),)
-HOST_GLOBAL_CFLAGS += -mno-cygwin
-HOST_GLOBAL_LDFLAGS += -mno-cygwin -mconsole
+$(combo_2nd_arch_prefix)HOST_GLOBAL_CFLAGS += -mno-cygwin
+$(combo_2nd_arch_prefix)HOST_GLOBAL_LDFLAGS += -mno-cygwin -mconsole
 endif
 endif
 
+############################################################
+## Macros after this line are shared by the 64-bit config.
+
 HOST_SHLIB_SUFFIX := .dll
 HOST_EXECUTABLE_SUFFIX := .exe
 
diff --git a/core/combo/HOST_windows-x86_64.mk b/core/combo/HOST_windows-x86_64.mk
new file mode 100644
index 0000000..9edc619
--- /dev/null
+++ b/core/combo/HOST_windows-x86_64.mk
@@ -0,0 +1,68 @@
+#
+# Copyright (C) 2006 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.
+#
+
+# Configuration for Windows on x86_64.
+# Included by combo/select.make
+
+# right now we get these from the environment, but we should
+# pick them from the tree somewhere
+TOOLS_PREFIX := #prebuilt/windows/host/bin/
+TOOLS_EXE_SUFFIX := .exe
+
+HOST_IS_64_BIT := true
+
+# Settings to use MinGW has a cross-compiler under Linux
+ifneq ($(findstring Linux,$(UNAME)),)
+ifneq ($(strip $(USE_MINGW)),)
+HOST_ACP_UNAVAILABLE := true
+TOOLS_EXE_SUFFIX :=
+HOST_GLOBAL_CFLAGS += -DUSE_MINGW
+TOOLS_PREFIX := /usr/bin/amd64-mingw32msvc-
+HOST_C_INCLUDES += /usr/lib/gcc/amd64-mingw32msvc/4.4.2/include
+HOST_GLOBAL_LD_DIRS += -L/usr/amd64-mingw32msvc/lib
+endif # USE_MINGW
+endif # Linux
+
+# Workaround differences in inttypes.h between host and target.
+# See bug 12708004.
+HOST_GLOBAL_CFLAGS += -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS -D__USE_MINGW_ANSI_STDIO
+
+HOST_CC := $(TOOLS_PREFIX)gcc$(TOOLS_EXE_SUFFIX)
+HOST_CXX := $(TOOLS_PREFIX)g++$(TOOLS_EXE_SUFFIX)
+HOST_AR := $(TOOLS_PREFIX)ar$(TOOLS_EXE_SUFFIX)
+
+HOST_GLOBAL_CFLAGS += -include $(call select-android-config-h,windows)
+HOST_GLOBAL_LDFLAGS += --enable-stdcall-fixup
+ifneq ($(strip $(BUILD_HOST_static)),)
+# Statically-linked binaries are desirable for sandboxed environment
+HOST_GLOBAL_LDFLAGS += -static
+endif # BUILD_HOST_static
+
+# when building under Cygwin, ensure that we use Mingw compilation by default.
+# you can disable this (i.e. to generate Cygwin executables) by defining the
+# USE_CYGWIN variable in your environment, e.g.:
+#
+#   export USE_CYGWIN=1
+#
+# note that the -mno-cygwin flags are not needed when cross-compiling the
+# Windows host tools on Linux
+#
+ifneq ($(findstring CYGWIN,$(UNAME)),)
+ifeq ($(strip $(USE_CYGWIN)),)
+HOST_GLOBAL_CFLAGS += -mno-cygwin
+HOST_GLOBAL_LDFLAGS += -mno-cygwin -mconsole
+endif
+endif
diff --git a/core/combo/mac_version.mk b/core/combo/mac_version.mk
new file mode 100644
index 0000000..b49feee
--- /dev/null
+++ b/core/combo/mac_version.mk
@@ -0,0 +1,50 @@
+# Detect Mac OS X and SDK versions.
+# Output variables:
+#   build_mac_version
+#   mac_sdk_version
+#   mac_sdk_root
+#   gcc_darwin_version
+
+ifndef build_mac_version
+
+build_mac_version := $(shell sw_vers -productVersion)
+
+mac_sdk_versions_supported :=  10.6 10.7 10.8
+ifneq ($(strip $(MAC_SDK_VERSION)),)
+mac_sdk_version := $(MAC_SDK_VERSION)
+ifeq ($(filter $(mac_sdk_version),$(mac_sdk_versions_supported)),)
+$(warning ****************************************************************)
+$(warning * MAC_SDK_VERSION $(MAC_SDK_VERSION) isn't one of the supported $(mac_sdk_versions_supported))
+$(warning ****************************************************************)
+$(error Stop.)
+endif
+else
+mac_sdk_versions_installed := $(shell xcodebuild -showsdks | grep macosx | sort | sed -e "s/.*macosx//g")
+mac_sdk_version := $(firstword $(filter $(mac_sdk_versions_installed), $(mac_sdk_versions_supported)))
+ifeq ($(mac_sdk_version),)
+mac_sdk_version := $(firstword $(mac_sdk_versions_supported))
+endif
+endif
+
+mac_sdk_path := $(shell xcode-select -print-path)
+# try /Applications/Xcode*.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.?.sdk
+#  or /Volume/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.?.sdk
+mac_sdk_root := $(mac_sdk_path)/Platforms/MacOSX.platform/Developer/SDKs/MacOSX$(mac_sdk_version).sdk
+ifeq ($(wildcard $(mac_sdk_root)),)
+# try legacy /Developer/SDKs/MacOSX10.?.sdk
+mac_sdk_root := /Developer/SDKs/MacOSX$(mac_sdk_version).sdk
+endif
+ifeq ($(wildcard $(mac_sdk_root)),)
+$(warning *****************************************************)
+$(warning * Can not find SDK $(mac_sdk_version) at $(mac_sdk_root))
+$(warning *****************************************************)
+$(error Stop.)
+endif
+
+ifeq ($(mac_sdk_version),10.6)
+  gcc_darwin_version := 10
+else
+  gcc_darwin_version := 11
+endif
+
+endif  # ifndef build_mac_version
diff --git a/core/combo/select.mk b/core/combo/select.mk
index c1a7cc0..8234a8f 100644
--- a/core/combo/select.mk
+++ b/core/combo/select.mk
@@ -18,15 +18,11 @@
 #
 # Inputs:
 #	combo_target -- prefix for final variables (HOST_ or TARGET_)
-#	combo_2nd_arch_prefix -- it's defined if this is loaded for TARGET_2ND_ARCH.
+#	combo_2nd_arch_prefix -- it's defined if this is loaded for the 2nd arch.
 #
 
 # Build a target string like "linux-arm" or "darwin-x86".
-ifdef combo_2nd_arch_prefix
-combo_os_arch := $($(combo_target)OS)-$(TARGET_2ND_ARCH)
-else
-combo_os_arch := $($(combo_target)OS)-$($(combo_target)ARCH)
-endif
+combo_os_arch := $($(combo_target)OS)-$($(combo_target)$(combo_2nd_arch_prefix)ARCH)
 
 combo_var_prefix := $(combo_2nd_arch_prefix)$(combo_target)
 
@@ -90,7 +86,7 @@
   # If we are cross-compiling Windows binaries on Linux
   # then use the linux ccache binary instead.
   ifeq ($(HOST_OS)-$(BUILD_OS),windows-linux)
-    CCACHE_HOST_TAG := linux-$(BUILD_ARCH)
+    CCACHE_HOST_TAG := linux-$(HOST_PREBUILT_ARCH)
   endif
   ccache := prebuilts/misc/$(CCACHE_HOST_TAG)/ccache/ccache
   # Check that the executable is here.
diff --git a/core/config.mk b/core/config.mk
index b62650c..cc0e19f 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -216,6 +216,13 @@
 combo_2nd_arch_prefix :=
 include $(BUILD_SYSTEM)/combo/select.mk
 
+# Load the 2nd host arch if it's needed.
+ifdef HOST_2ND_ARCH
+combo_target := HOST_
+combo_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/combo/select.mk
+endif
+
 # on windows, the tools have .exe at the end, and we depend on the
 # host config stuff being done first
 
@@ -350,13 +357,13 @@
 # ---------------------------------------------------------------
 # Generic tools.
 
-LEX := prebuilts/misc/$(BUILD_OS)-$(BUILD_ARCH)/flex/flex-2.5.39
+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
 # external/bison/data.
 # To run bison from elsewhere you need to set up enviromental variable
 # BISON_PKGDATADIR.
 BISON_PKGDATADIR := $(PWD)/external/bison/data
-BISON := prebuilts/misc/$(BUILD_OS)-$(BUILD_ARCH)/bison/bison
+BISON := prebuilts/misc/$(BUILD_OS)-$(HOST_PREBUILT_ARCH)/bison/bison
 YACC := $(BISON) -d
 
 DOXYGEN:= doxygen
@@ -507,31 +514,41 @@
 $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_CPPFLAGS += $($(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_RELEASE_CPPFLAGS)
 endif
 
+ifdef HOST_2ND_ARCH
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_CFLAGS += $(COMMON_GLOBAL_CFLAGS)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_RELEASE_CFLAGS += $(COMMON_RELEASE_CFLAGS)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_CPPFLAGS += $(COMMON_GLOBAL_CPPFLAGS)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_RELEASE_CPPFLAGS += $(COMMON_RELEASE_CPPFLAGS)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_LD_DIRS += -L$($(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATE_LIBRARIES)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_PROJECT_INCLUDES := $(HOST_PROJECT_INCLUDES)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_CFLAGS += $($(HOST_2ND_ARCH_VAR_PREFIX)HOST_RELEASE_CFLAGS)
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_CPPFLAGS += $($(HOST_2ND_ARCH_VAR_PREFIX)HOST_RELEASE_CPPFLAGS)
+endif
+
 # allow overriding default Java libraries on a per-target basis
 ifeq ($(TARGET_DEFAULT_JAVA_LIBRARIES),)
   TARGET_DEFAULT_JAVA_LIBRARIES := core core-junit ext framework framework2
 endif
 
+TARGET_CPU_SMP ?= true
+
 # Flags for DEX2OAT
 DEX2OAT_TARGET_ARCH := $(TARGET_ARCH)
 DEX2OAT_TARGET_CPU_VARIANT := $(TARGET_CPU_VARIANT)
 DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
-
-# If for a 64bit build we have a 2nd architecture but the zygote isn't 64bit,
-# assume DEX2OAT should DEXPREOPT for the 2nd architecture.
-ifdef TARGET_2ND_ARCH
-  ifeq (true,$(TARGET_IS_64_BIT))
-    ifeq ($(filter ro.zygote=zygote64,$(PRODUCT_DEFAULT_PROPERTY_OVERRIDES)),)
-      DEX2OAT_TARGET_ARCH := $(TARGET_2ND_ARCH)
-      DEX2OAT_TARGET_CPU_VARIANT := $(TARGET_2ND_CPU_VARIANT)
-    endif
-  endif
-endif
-
 ifneq (,$(filter $(DEX2OAT_TARGET_CPU_VARIANT),cortex-a7 cortex-a15 krait denver))
   DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := div
 endif
 
+ifdef TARGET_2ND_ARCH
+$(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH := $(TARGET_2ND_ARCH)
+$(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT := $(TARGET_2ND_CPU_VARIANT)
+$(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
+ifneq (,$(filter $($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT),cortex-a7 cortex-a15 krait denver))
+  $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := div
+endif
+endif
+
 # define clang/llvm tools and global flags
 include $(BUILD_SYSTEM)/clang/config.mk
 
diff --git a/core/configure_module_stem.mk b/core/configure_module_stem.mk
index 2823e37..1560055 100644
--- a/core/configure_module_stem.mk
+++ b/core/configure_module_stem.mk
@@ -1,4 +1,4 @@
-my_multilib_stem := $(LOCAL_MODULE_STEM_$(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_IS_64_BIT),64,32))
+my_multilib_stem := $(LOCAL_MODULE_STEM_$(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)IS_64_BIT),64,32))
 ifdef my_multilib_stem
 LOCAL_MODULE_STEM := $(my_multilib_stem)
 endif
diff --git a/core/definitions.mk b/core/definitions.mk
index c0bfd9b..57234e4 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -426,7 +426,7 @@
     $(eval _idf2ndArchPrefix := $(if $(call directory_is_64_bit_blacklisted,$(LOCAL_PATH))$(strip $(5)),$(TARGET_2ND_ARCH_VAR_PREFIX))) \
     $(if $(filter $(_idfPrefix)-$(_idfClass),$(COMMON_MODULE_CLASSES))$(4), \
         $(eval _idfIntBase := $($(_idfPrefix)_OUT_COMMON_INTERMEDIATES)) \
-      ,$(if $(filter $(_idfPrefix)-$(_idfClass),TARGET-SHARED_LIBRARIES TARGET-STATIC_LIBRARIES TARGET-EXECUTABLES TARGET-GYP),\
+      ,$(if $(filter $(_idfClass),SHARED_LIBRARIES STATIC_LIBRARIES EXECUTABLES GYP),\
           $(eval _idfIntBase := $($(_idf2ndArchPrefix)$(_idfPrefix)_OUT_INTERMEDIATES)) \
        ,$(eval _idfIntBase := $($(_idfPrefix)_OUT_INTERMEDIATES)) \
        ) \
@@ -1170,7 +1170,7 @@
     rm -rf $$ldir; \
     mkdir -p $$ldir; \
     filelist=; \
-    for f in `$(TARGET_AR) t $(1)`; do \
+    for f in `$($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_AR) t $(1)`; do \
         $($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_AR) p $(1) $$f > $$ldir/$$f; \
         filelist="$$filelist $$ldir/$$f"; \
     done ; \
@@ -1191,7 +1191,8 @@
 @rm -f $@
 $(extract-and-include-target-whole-static-libs)
 @echo "target StaticLib: $(PRIVATE_MODULE) ($@)"
-$(call split-long-arguments,$($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_AR) $($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_ARFLAGS) \
+$(call split-long-arguments,$($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_AR) \
+    $($(PRIVATE_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_ARFLAGS) \
     $(PRIVATE_ARFLAGS) $@,$(filter %.o, $^))
 endef
 
@@ -1206,11 +1207,12 @@
     rm -rf $$ldir; \
     mkdir -p $$ldir; \
     filelist=; \
-    for f in `$(HOST_AR) t $(1) | \grep '\.o$$'`; do \
-        $(HOST_AR) p $(1) $$f > $$ldir/$$f; \
+    for f in `$($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_AR) t $(1) | \grep '\.o$$'`; do \
+        $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_AR) p $(1) $$f > $$ldir/$$f; \
         filelist="$$filelist $$ldir/$$f"; \
     done ; \
-    $(HOST_AR) $(HOST_GLOBAL_ARFLAGS) $(PRIVATE_ARFLAGS) $@ $$filelist
+    $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_AR) $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_ARFLAGS) \
+        $(PRIVATE_ARFLAGS) $@ $$filelist
 
 endef
 
@@ -1226,7 +1228,9 @@
 @rm -f $@
 $(extract-and-include-host-whole-static-libs)
 @echo "host StaticLib: $(PRIVATE_MODULE) ($@)"
-$(call split-long-arguments,$(HOST_AR) $(HOST_GLOBAL_ARFLAGS) $(PRIVATE_ARFLAGS) $@,$(filter %.o, $^))
+$(call split-long-arguments,$($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_AR) \
+    $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_ARFLAGS) \
+    $(PRIVATE_ARFLAGS) $@,$(filter %.o, $^))
 endef
 
 
@@ -1239,10 +1243,10 @@
 ifneq ($(HOST_CUSTOM_LD_COMMAND),true)
 define transform-host-o-to-shared-lib-inner
 $(hide) $(PRIVATE_CXX) \
-	-Wl,-rpath-link=$(HOST_OUT_INTERMEDIATE_LIBRARIES) \
-	-Wl,-rpath,\$$ORIGIN/../lib \
+	-Wl,-rpath-link=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATE_LIBRARIES) \
+	-Wl,-rpath,\$$ORIGIN/../$(notdir $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES)) \
 	-shared -Wl,-soname,$(notdir $@) \
-	$(HOST_GLOBAL_LD_DIRS) \
+	$($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_LD_DIRS) \
 	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
 	   $(PRIVATE_HOST_GLOBAL_LDFLAGS) \
 	) \
@@ -1412,9 +1416,9 @@
 	$(call normalize-host-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
 	$(call normalize-host-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
-	-Wl,-rpath-link=$(HOST_OUT_INTERMEDIATE_LIBRARIES) \
-	-Wl,-rpath,\$$ORIGIN/../lib \
-	$(HOST_GLOBAL_LD_DIRS) \
+	-Wl,-rpath-link=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATE_LIBRARIES) \
+	-Wl,-rpath,\$$ORIGIN/../$(notdir $($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES)) \
+	$($(PRIVATE_2ND_ARCH_VAR_PREFIX)HOST_GLOBAL_LD_DIRS) \
 	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
 		$(PRIVATE_HOST_GLOBAL_LDFLAGS) \
 		$(HOST_FPIE_FLAGS) \
diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index 46a6479..ab970f9 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -49,25 +49,26 @@
 include $(BUILD_SYSTEM)/dex_preopt_libart.mk
 
 # Define dexpreopt-one-file based on current default runtime.
-# $(1): the boot image to use (unused for libdvm)
-# $(2): the input .jar or .apk file
-# $(3): the input .jar or .apk target location (unused for libdvm)
-# $(4): the output .odex file
+# $(1): the input .jar or .apk file
+# $(2): the output .odex file
 ifeq ($(DALVIK_VM_LIB),libdvm.so)
 define dexpreopt-one-file
-$(call dexopt-one-file,$(2),$(4))
+$(call dexopt-one-file,$(1),$(2))
 endef
 
 DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS := $(DEXOPT_DEPENDENCY)
 DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT := $(DEXPREOPT_BOOT_ODEXS)
 else
 define dexpreopt-one-file
-$(call dex2oat-one-file,$(1),$(2),$(3),$(4))
+$(call dex2oat-one-file,$(1),$(2))
 endef
 
 DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS := $(DEX2OATD_DEPENDENCY)
-DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT := $(DEFAULT_DEX_PREOPT_BUILT_IMAGE)
-endif
+DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT := $(DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME)
+ifdef TARGET_2ND_ARCH
+$(TARGET_2ND_ARCH_VAR_PREFIX)DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT := $($(TARGET_2ND_ARCH_VAR_PREFIX)DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME)
+endif  # TARGET_2ND_ARCH
+endif  # DALVIK_VM_LIB
 else
 $(warning No DALVIK_VM_LIB, disable dexpreopt.)
 WITH_DEXPREOPT := false
diff --git a/core/dex_preopt_libart.mk b/core/dex_preopt_libart.mk
index 7f3285c..7d8cee0 100644
--- a/core/dex_preopt_libart.mk
+++ b/core/dex_preopt_libart.mk
@@ -23,20 +23,6 @@
 
 PRELOADED_CLASSES := frameworks/base/preloaded-classes
 
-LIBART_BOOT_IMAGE := /$(DEXPREOPT_BOOT_JAR_DIR)/boot-$(DEX2OAT_TARGET_ARCH).art
-
-DEFAULT_DEX_PREOPT_BUILT_IMAGE := $(DEXPREOPT_BOOT_JAR_DIR_FULL_PATH)/boot-$(DEX2OAT_TARGET_ARCH).art
-
-DEFAULT_DEX_PREOPT_INSTALLED_IMAGE :=
-ifneq ($(PRODUCT_DEX_PREOPT_IMAGE_IN_DATA),true)
-DEFAULT_DEX_PREOPT_INSTALLED_IMAGE := $(PRODUCT_OUT)$(LIBART_BOOT_IMAGE)
-
-# The rule to install boot.art and boot.oat
-$(DEFAULT_DEX_PREOPT_INSTALLED_IMAGE) : $(DEFAULT_DEX_PREOPT_BUILT_IMAGE) | $(ACP)
-	$(call copy-file-to-target)
-	$(hide) $(ACP) -fp $(patsubst %.art,%.oat,$<) $(patsubst %.art,%.oat,$@)
-endif
-
 # start of image reserved address space
 LIBART_IMG_HOST_BASE_ADDRESS   := 0x60000000
 
@@ -49,48 +35,50 @@
 ########################################################################
 # The full system boot classpath
 
+# Returns the path to the .odex file
+# $(1): the arch name.
+# $(2): the full path (including file name) of the corresponding .jar or .apk.
+define get-odex-file-path
+$(dir $(2))$(1)/$(basename $(notdir $(2))).odex
+endef
+
+# Returns the path to the image file (such as "/system/framework/<arch>/boot.art"
+# $(1): the arch name (such as "arm")
+# $(2): the image location (such as "/system/framework/boot.art")
+define get-image-file-path
+$(dir $(2))$(1)/$(notdir $(2))
+endef
+
 # note we use core-libart.jar in place of core.jar for ART.
 LIBART_TARGET_BOOT_JARS := $(patsubst core, core-libart,$(DEXPREOPT_BOOT_JARS_MODULES))
 LIBART_TARGET_BOOT_DEX_LOCATIONS := $(foreach jar,$(LIBART_TARGET_BOOT_JARS),/$(DEXPREOPT_BOOT_JAR_DIR)/$(jar).jar)
 LIBART_TARGET_BOOT_DEX_FILES := $(foreach jar,$(LIBART_TARGET_BOOT_JARS),$(call intermediates-dir-for,JAVA_LIBRARIES,$(jar),,COMMON)/javalib.jar)
 
-# The .oat with symbols
-LIBART_TARGET_BOOT_OAT_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)$(patsubst %.art,%.oat,$(LIBART_BOOT_IMAGE))
+my_2nd_arch_prefix :=
+include $(BUILD_SYSTEM)/dex_preopt_libart_boot.mk
 
-# Use dex2oat debug version for better error reporting
-$(DEFAULT_DEX_PREOPT_BUILT_IMAGE): $(LIBART_TARGET_BOOT_DEX_FILES) $(DEX2OATD_DEPENDENCY)
-	@echo "target dex2oat: $@ ($?)"
-	@mkdir -p $(dir $@)
-	@mkdir -p $(dir $(LIBART_TARGET_BOOT_OAT_UNSTRIPPED))
-	$(hide) $(DEX2OATD) --runtime-arg -Xms256m --runtime-arg -Xmx256m --image-classes=$(PRELOADED_CLASSES) \
-		$(addprefix --dex-file=,$(LIBART_TARGET_BOOT_DEX_FILES)) \
-		$(addprefix --dex-location=,$(LIBART_TARGET_BOOT_DEX_LOCATIONS)) \
-		--oat-symbols=$(LIBART_TARGET_BOOT_OAT_UNSTRIPPED) \
-		--oat-file=$(patsubst %.art,%.oat,$@) \
-		--oat-location=$(patsubst %.art,%.oat,$(LIBART_BOOT_IMAGE)) \
-		--image=$@ --base=$(LIBART_IMG_TARGET_BASE_ADDRESS) \
-		--instruction-set=$(DEX2OAT_TARGET_ARCH) \
-		--instruction-set-features=$(DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES) \
-		--android-root=$(PRODUCT_OUT)/system
+ifdef TARGET_2ND_ARCH
+my_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/dex_preopt_libart_boot.mk
+my_2nd_arch_prefix :=
+endif
 
 
 ########################################################################
 # For a single jar or APK
 
-# $(1): the boot image to use
-# $(2): the input .jar or .apk file
-# $(3): the input .jar or .apk target location
-# $(4): the output .odex file
+# $(1): the input .jar or .apk file
+# $(2): the output .odex file
 define dex2oat-one-file
-$(hide) rm -f $(4)
-$(hide) mkdir -p $(dir $(4))
+$(hide) rm -f $(2)
+$(hide) mkdir -p $(dir $(2))
 $(hide) $(DEX2OATD) \
 	--runtime-arg -Xms64m --runtime-arg -Xmx64m \
-	--boot-image=$(1) \
-	--dex-file=$(2) \
-	--dex-location=$(3) \
-	--oat-file=$(4) \
+	--boot-image=$(PRIVATE_DEX_PREOPT_IMAGE_LOCATION) \
+	--dex-file=$(1) \
+	--dex-location=$(PRIVATE_DEX_LOCATION) \
+	--oat-file=$(2) \
 	--android-root=$(PRODUCT_OUT)/system \
-	--instruction-set=$(DEX2OAT_TARGET_ARCH) \
-	--instruction-set-features=$(DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES)
+	--instruction-set=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH) \
+	--instruction-set-features=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES)
 endef
diff --git a/core/dex_preopt_libart_boot.mk b/core/dex_preopt_libart_boot.mk
new file mode 100644
index 0000000..70130b6
--- /dev/null
+++ b/core/dex_preopt_libart_boot.mk
@@ -0,0 +1,55 @@
+# Rules to build boot.art
+# Input variables:
+#   my_2nd_arch_prefix: indicates if this is to build for the 2nd arch.
+
+# The image "location" is a symbolic path that with multiarchitecture
+# support doesn't really exist on the device. Typically it is
+# /system/framework/boot.art and should be the same for all supported
+# architectures on the device. The concrete architecture specific
+# content actually ends up in a "filename" that contains an
+# architecture specific directory name such as arm, arm64, mips,
+# mips64, x86, x86_64.
+#
+# Here are some example values for an x86_64 / x86 configuration:
+#
+# DEFAULT_DEX_PREOPT_BUILT_IMAGE_LOCATION=out/target/product/generic_x86_64/dex_bootjars/system/framework/boot.art
+# DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME=out/target/product/generic_x86_64/dex_bootjars/system/framework/x86_64/boot.art
+# LIBART_BOOT_IMAGE=/system/framework/x86_64/boot.art
+#
+# 2ND_DEFAULT_DEX_PREOPT_BUILT_IMAGE_LOCATION=out/target/product/generic_x86_64/dex_bootjars/system/framework/boot.art
+# 2ND_DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME=out/target/product/generic_x86_64/dex_bootjars/system/framework/x86/boot.art
+# 2ND_LIBART_BOOT_IMAGE=/system/framework/x86/boot.art
+
+$(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_BUILT_IMAGE_LOCATION := $(DEXPREOPT_BOOT_JAR_DIR_FULL_PATH)/boot.art
+$(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME := $(DEXPREOPT_BOOT_JAR_DIR_FULL_PATH)/$($(my_2nd_arch_prefix)DEX2OAT_TARGET_ARCH)/boot.art
+$(my_2nd_arch_prefix)LIBART_BOOT_IMAGE_FILENAME := /$(DEXPREOPT_BOOT_JAR_DIR)/$($(my_2nd_arch_prefix)DEX2OAT_TARGET_ARCH)/boot.art
+
+# The .oat with symbols
+$(my_2nd_arch_prefix)LIBART_TARGET_BOOT_OAT_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)$(patsubst %.art,%.oat,$($(my_2nd_arch_prefix)LIBART_BOOT_IMAGE_FILENAME))
+
+$(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE :=
+ifneq ($(PRODUCT_DEX_PREOPT_IMAGE_IN_DATA),true)
+$(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE := $(PRODUCT_OUT)$($(my_2nd_arch_prefix)LIBART_BOOT_IMAGE_FILENAME)
+endif
+
+# The rule to install boot.art and boot.oat
+$($(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE) : $($(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME) | $(ACP)
+	$(call copy-file-to-target)
+	$(hide) $(ACP) -fp $(patsubst %.art,%.oat,$<) $(patsubst %.art,%.oat,$@)
+
+$($(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME): PRIVATE_2ND_ARCH_VAR_PREFIX := $(my_2nd_arch_prefix)
+# Use dex2oat debug version for better error reporting
+$($(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_BUILT_IMAGE_FILENAME) : $(LIBART_TARGET_BOOT_DEX_FILES) $(DEX2OATD_DEPENDENCY)
+	@echo "target dex2oat: $@ ($?)"
+	@mkdir -p $(dir $@)
+	@mkdir -p $(dir $($(PRIVATE_2ND_ARCH_VAR_PREFIX)LIBART_TARGET_BOOT_OAT_UNSTRIPPED))
+	$(hide) $(DEX2OATD) --runtime-arg -Xms256m --runtime-arg -Xmx256m --image-classes=$(PRELOADED_CLASSES) \
+		$(addprefix --dex-file=,$(LIBART_TARGET_BOOT_DEX_FILES)) \
+		$(addprefix --dex-location=,$(LIBART_TARGET_BOOT_DEX_LOCATIONS)) \
+		--oat-symbols=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)LIBART_TARGET_BOOT_OAT_UNSTRIPPED) \
+		--oat-file=$(patsubst %.art,%.oat,$@) \
+		--oat-location=$(patsubst %.art,%.oat,$($(PRIVATE_2ND_ARCH_VAR_PREFIX)LIBART_BOOT_IMAGE_FILENAME)) \
+		--image=$@ --base=$(LIBART_IMG_TARGET_BASE_ADDRESS) \
+		--instruction-set=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH) \
+		--instruction-set-features=$($(PRIVATE_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES) \
+		--android-root=$(PRODUCT_OUT)/system
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index b0b73af..6d70dde 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -43,22 +43,86 @@
 # For libart, the boot jars' odex files are replaced by $(DEFAULT_DEX_PREOPT_INSTALLED_IMAGE).
 # We use this installed_odex trick to get boot.art installed.
 installed_odex := $(DEFAULT_DEX_PREOPT_INSTALLED_IMAGE)
+# Append the odex for the 2nd arch if we have one.
+installed_odex += $($(TARGET_2ND_ARCH_VAR_PREFIX)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE)
 endif # libdvm.so
 else  # boot jar
+ifeq ($(DALVIK_VM_LIB),libdvm.so)
 built_odex := $(basename $(LOCAL_BUILT_MODULE)).odex
 installed_odex := $(basename $(LOCAL_INSTALLED_MODULE)).odex
 
-ifneq ($(DALVIK_VM_LIB),libdvm.so) # libart
-ifndef LOCAL_DEX_PREOPT_IMAGE
-LOCAL_DEX_PREOPT_IMAGE := $(DEFAULT_DEX_PREOPT_BUILT_IMAGE)
+$(built_odex) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT) \
+                $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS)
+else # libart
+ifeq ($(LOCAL_MODULE_CLASS),JAVA_LIBRARIES)
+# For a Java library, we build odex for both 1st arch and 2nd arch, if we have one.
+# #################################################
+# Odex for the 1st arch
+built_odex := $(call get-odex-file-path,$(DEX2OAT_TARGET_ARCH),$(LOCAL_BUILT_MODULE))
+ifdef LOCAL_DEX_PREOPT_IMAGE_LOCATION
+my_dex_preopt_image_location := $(LOCAL_DEX_PREOPT_IMAGE_LOCATION)
+else
+my_dex_preopt_image_location := $(DEFAULT_DEX_PREOPT_BUILT_IMAGE_LOCATION)
 endif
+my_dex_preopt_image_filename := $(call get-image-file-path,$(DEX2OAT_TARGET_ARCH),$(my_dex_preopt_image_location))
+$(built_odex): PRIVATE_2ND_ARCH_VAR_PREFIX :=
+$(built_odex): PRIVATE_DEX_LOCATION := $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE))
+$(built_odex): PRIVATE_DEX_PREOPT_IMAGE_LOCATION := $(my_dex_preopt_image_location)
+$(built_odex) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT) \
+                $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS) \
+                $(my_dex_preopt_image_filename)
+installed_odex := $(call get-odex-file-path,$(DEX2OAT_TARGET_ARCH),$(LOCAL_INSTALLED_MODULE))
+
+# #################################################
+# Odex for the 2nd arch
+ifdef TARGET_2ND_ARCH
+built_odex2 := $(call get-odex-file-path,$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH),$(LOCAL_BUILT_MODULE))
+ifdef LOCAL_DEX_PREOPT_IMAGE_LOCATION
+my_dex_preopt_image_location := $(LOCAL_DEX_PREOPT_IMAGE_LOCATION)
+else
+my_dex_preopt_image_location := $($(TARGET_2ND_ARCH_VAR_PREFIX)DEFAULT_DEX_PREOPT_BUILT_IMAGE_LOCATION)
+endif
+my_dex_preopt_image_filename := $(call get-image-file-path,$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH),$(my_dex_preopt_image_location))
+$(built_odex2): PRIVATE_2ND_ARCH_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX)
+$(built_odex2): PRIVATE_DEX_LOCATION := $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE))
+$(built_odex2): PRIVATE_DEX_PREOPT_IMAGE_LOCATION := $(my_dex_preopt_image_location)
+$(built_odex2) : $($(TARGET_2ND_ARCH_VAR_PREFIX)DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT) \
+                 $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS) \
+                 $(my_dex_preopt_image_filename)
+
+built_odex += $(built_odex2)
+installed_odex += $(call get-odex-file-path,$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH),$(LOCAL_INSTALLED_MODULE))
+endif  # TARGET_2ND_ARCH
+# #################################################
+else  # must be APPS
+# For an app, we build for the multilib arch it's targeted for.
+built_odex := $(call get-odex-file-path,$($(LOCAL_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH),$(LOCAL_BUILT_MODULE))
+ifdef LOCAL_DEX_PREOPT_IMAGE_LOCATION
+my_dex_preopt_image_location := $(LOCAL_DEX_PREOPT_IMAGE_LOCATION)
+else
+my_dex_preopt_image_location := $($(LOCAL_2ND_ARCH_VAR_PREFIX)DEFAULT_DEX_PREOPT_BUILT_IMAGE_LOCATION)
+endif
+my_dex_preopt_image_filename := $(call get-image-file-path,$($(LOCAL_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH),$(my_dex_preopt_image_location))
+# $(built_odex) is byproduct of $(LOCAL_BUILT_MODULE)
+$(LOCAL_BUILT_MODULE) $(built_odex): PRIVATE_2ND_ARCH_VAR_PREFIX := $(LOCAL_2ND_ARCH_VAR_PREFIX)
+$(LOCAL_BUILT_MODULE) $(built_odex): PRIVATE_DEX_LOCATION := $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE))
+$(LOCAL_BUILT_MODULE) $(built_odex): PRIVATE_DEX_PREOPT_IMAGE_LOCATION := $(my_dex_preopt_image_location)
+$(LOCAL_BUILT_MODULE) $(built_odex) : $($(LOCAL_2ND_ARCH_VAR_PREFIX)DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT) \
+                $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS) \
+                $(my_dex_preopt_image_filename)
+installed_odex := $(call get-odex-file-path,$($(LOCAL_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH),$(LOCAL_INSTALLED_MODULE))
+endif  # LOCAL_MODULE_CLASS
 endif # libart
 endif # boot jar
 
 ifdef built_odex
 # We need $(LOCAL_BUILT_MODULE) in the deps to enforce reinstallation
 # even if $(built_odex) is byproduct of $(LOCAL_BUILT_MODULE), such as in package.mk.
-$(installed_odex) : $(built_odex) $(LOCAL_BUILT_MODULE) | $(ACP)
+# Use pattern rule - we may have multiple installed odex files.
+# Ugly syntax - See the definition get-odex-file-path.
+$(installed_odex) : $(dir $(LOCAL_INSTALLED_MODULE))%/$(notdir $(word 1,$(installed_odex))) \
+                  : $(dir $(LOCAL_BUILT_MODULE))%/$(notdir $(word 1,$(built_odex))) \
+    $(LOCAL_BUILT_MODULE) | $(ACP)
 	@echo "Install: $@"
 	$(copy-file-to-target)
 endif
diff --git a/core/dumpvar.mk b/core/dumpvar.mk
index d3f3969..510bc7d 100644
--- a/core/dumpvar.mk
+++ b/core/dumpvar.mk
@@ -72,9 +72,11 @@
 $(info   TARGET_BUILD_TYPE=$(TARGET_BUILD_TYPE))
 $(info   TARGET_BUILD_APPS=$(TARGET_BUILD_APPS))
 $(info   TARGET_ARCH=$(TARGET_ARCH))
-$(info   TARGET_2ND_ARCH=$(TARGET_2ND_ARCH))
 $(info   TARGET_ARCH_VARIANT=$(TARGET_ARCH_VARIANT))
 $(info   TARGET_CPU_VARIANT=$(TARGET_CPU_VARIANT))
+$(info   TARGET_2ND_ARCH=$(TARGET_2ND_ARCH))
+$(info   TARGET_2ND_ARCH_VARIANT=$(TARGET_2ND_ARCH_VARIANT))
+$(info   TARGET_2ND_CPU_VARIANT=$(TARGET_2ND_CPU_VARIANT))
 $(info   HOST_ARCH=$(HOST_ARCH))
 $(info   HOST_OS=$(HOST_OS))
 $(info   HOST_OS_EXTRA=$(HOST_OS_EXTRA))
diff --git a/core/dynamic_binary.mk b/core/dynamic_binary.mk
index b3ca4fc..e538d1e 100644
--- a/core/dynamic_binary.mk
+++ b/core/dynamic_binary.mk
@@ -41,8 +41,6 @@
 include $(BUILD_SYSTEM)/binary.mk
 ###################################
 
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_2ND_ARCH_VAR_PREFIX := $(LOCAL_2ND_ARCH_VAR_PREFIX)
-
 # Make sure that our guess at the value of intermediates was correct.
 ifneq ($(intermediates),$(guessed_intermediates))
 $(error Internal error: guessed path '$(guessed_intermediates)' doesn't match '$(intermediates))
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 88f35a6..2da9d8d 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -40,16 +40,16 @@
 
 # HOST_OS
 ifneq (,$(findstring Linux,$(UNAME)))
-	HOST_OS := linux
+  HOST_OS := linux
 endif
 ifneq (,$(findstring Darwin,$(UNAME)))
-	HOST_OS := darwin
+  HOST_OS := darwin
 endif
 ifneq (,$(findstring Macintosh,$(UNAME)))
-	HOST_OS := darwin
+  HOST_OS := darwin
 endif
 ifneq (,$(findstring CYGWIN,$(UNAME)))
-	HOST_OS := windows
+  HOST_OS := windows
 endif
 
 # BUILD_OS is the real host doing the build.
@@ -59,7 +59,7 @@
 # Windows SDK. Only a subset of tools and SDK will manage to build properly.
 ifeq ($(HOST_OS),linux)
 ifneq ($(USE_MINGW),)
-	HOST_OS := windows
+  HOST_OS := windows
 endif
 endif
 
@@ -69,15 +69,24 @@
 
 
 # HOST_ARCH
-ifneq (,$(findstring 86,$(UNAME)))
-	HOST_ARCH := x86
-endif
-
-ifneq (,$(findstring Power,$(UNAME)))
-	HOST_ARCH := ppc
+ifneq (,$(findstring x86_64,$(UNAME)))
+  # TODO: Replace BUILD_HOST_64bit with a flag that forces 32-bit build,
+  # after we default to 64-bit host build.
+  ifeq (,$(BUILD_HOST_64bit))
+    HOST_ARCH := x86
+    HOST_2ND_ARCH :=
+  else
+    HOST_ARCH := x86_64
+    HOST_2ND_ARCH := x86
+  endif
+else ifneq (,$(findstring 86,$(UNAME)))
+  # It's not officially supported!
+  HOST_ARCH := x86
+  HOST_2ND_ARCH :=
 endif
 
 BUILD_ARCH := $(HOST_ARCH)
+BUILD_2ND_ARCH := $(HOST_2ND_ARCH)
 
 ifeq ($(HOST_ARCH),)
 $(error Unable to determine HOST_ARCH from uname -sm: $(UNAME)!)
@@ -94,12 +103,14 @@
 endif
 endif
 
+# We don't want to move all the prebuilt host tools to a $(HOST_OS)-x86_64 dir.
+HOST_PREBUILT_ARCH := x86
 # This is the standard way to name a directory containing prebuilt host
 # objects. E.g., prebuilt/$(HOST_PREBUILT_TAG)/cc
 ifeq ($(HOST_OS),windows)
   HOST_PREBUILT_TAG := windows
 else
-  HOST_PREBUILT_TAG := $(HOST_OS)-$(HOST_ARCH)
+  HOST_PREBUILT_TAG := $(HOST_OS)-$(HOST_PREBUILT_ARCH)
 endif
 
 # TARGET_COPY_OUT_* are all relative to the staging directory, ie PRODUCT_OUT.
@@ -181,11 +192,12 @@
 HOST_OUT_ROOT_debug := $(DEBUG_OUT_DIR)/host
 HOST_OUT_ROOT := $(HOST_OUT_ROOT_$(HOST_BUILD_TYPE))
 
-HOST_OUT_release := $(HOST_OUT_ROOT_release)/$(HOST_OS)-$(HOST_ARCH)
-HOST_OUT_debug := $(HOST_OUT_ROOT_debug)/$(HOST_OS)-$(HOST_ARCH)
+# 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))
 
-BUILD_OUT := $(OUT_DIR)/host/$(BUILD_OS)-$(BUILD_ARCH)
+BUILD_OUT := $(OUT_DIR)/host/$(BUILD_OS)-$(HOST_PREBUILT_ARCH)
 
 TARGET_PRODUCT_OUT_ROOT := $(TARGET_OUT_ROOT)/product
 
@@ -213,6 +225,15 @@
 HOST_OUT_GEN := $(HOST_OUT)/gen
 HOST_OUT_COMMON_GEN := $(HOST_COMMON_OUT_ROOT)/gen
 
+# Out for HOST_2ND_ARCH
+HOST_2ND_ARCH_VAR_PREFIX := 2ND_
+HOST_2ND_ARCH_MODULE_SUFFIX := _32
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATES := $(HOST_OUT)/obj32
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATE_LIBRARIES := $($(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATES)/lib
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES := $(HOST_OUT)/lib32
+$(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_EXECUTABLES := $(HOST_OUT_EXECUTABLES)
+
+
 TARGET_OUT_INTERMEDIATES := $(PRODUCT_OUT)/obj
 TARGET_OUT_HEADERS := $(TARGET_OUT_INTERMEDIATES)/include
 TARGET_OUT_INTERMEDIATE_LIBRARIES := $(TARGET_OUT_INTERMEDIATES)/lib
diff --git a/core/executable.mk b/core/executable.mk
index 7a3e08e..4dd9a23 100644
--- a/core/executable.mk
+++ b/core/executable.mk
@@ -6,6 +6,7 @@
 # LOCAL_MODULE_PATH_32 and LOCAL_MODULE_PATH_64 or LOCAL_MODULE_STEM_32 and
 # LOCAL_MODULE_STEM_64
 
+my_prefix := TARGET_
 include $(BUILD_SYSTEM)/multilib.mk
 
 ifeq ($(my_module_multilib),both)
diff --git a/core/executable_prefer_symlink.mk b/core/executable_prefer_symlink.mk
index c6abed4..2f04d0d 100644
--- a/core/executable_prefer_symlink.mk
+++ b/core/executable_prefer_symlink.mk
@@ -5,12 +5,20 @@
 # Note: now only limited to the binaries that will be installed under system/bin directory
 
 my_symlink := $(addprefix $(TARGET_OUT)/bin/, $(LOCAL_MODULE))
-# create link to the one used for prefer version
+# Create link to the one used depending on the target
+# configuration. Note that we require the TARGET_IS_64_BIT
+# check because 32 bit targets may not define TARGET_PREFER_32_BIT_APPS
+# et al. since those variables make no sense in that context.
+ifeq ($(TARGET_IS_64_BIT),true)
 ifneq ($(TARGET_PREFER_32_BIT_APPS),true)
   $(my_symlink): PRIVATE_SRC_BINARY_NAME := $(LOCAL_MODULE_STEM_64)
 else
   $(my_symlink): PRIVATE_SRC_BINARY_NAME := $(LOCAL_MODULE_STEM_32)
 endif
+else
+  $(my_symlink): PRIVATE_SRC_BINARY_NAME := $(LOCAL_MODULE_STEM_32)
+endif
+
 
 $(my_symlink): $(LOCAL_INSTALLED_MODULE) $(LOCAL_MODULE_MAKEFILE)
 	@echo "Symlink: $@ -> $(PRIVATE_SRC_BINARY_NAME)"
diff --git a/core/host_executable.mk b/core/host_executable.mk
index ffb35d2..874bf87 100644
--- a/core/host_executable.mk
+++ b/core/host_executable.mk
@@ -1,33 +1,47 @@
-###########################################################
-## Standard rules for building an executable file.
-##
-## Additional inputs from base_rules.make:
-## None.
-###########################################################
 
-LOCAL_IS_HOST_MODULE := true
-ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
-LOCAL_MODULE_CLASS := EXECUTABLES
-endif
-ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
-LOCAL_MODULE_SUFFIX := $(HOST_EXECUTABLE_SUFFIX)
+my_prefix := HOST_
+include $(BUILD_SYSTEM)/multilib.mk
+
+ifndef my_module_multilib
+# By default we only build host module for the first arch.
+my_module_multilib := first
 endif
 
-$(call host-executable-hook)
-
-skip_build_from_source :=
-ifdef LOCAL_PREBUILT_MODULE_FILE
-ifeq (,$(call if-build-from-source,$(LOCAL_MODULE),$(LOCAL_PATH)))
-include $(BUILD_SYSTEM)/prebuilt_internal.mk
-skip_build_from_source := true
+ifeq ($(my_module_multilib),both)
+ifeq ($(LOCAL_MODULE_PATH_32)$(LOCAL_MODULE_STEM_32),)
+$(error $(LOCAL_PATH): LOCAL_MODULE_STEM_32 or LOCAL_MODULE_PATH_32 is required for LOCAL_MULTILIB := both for module $(LOCAL_MODULE))
 endif
+ifeq ($(LOCAL_MODULE_PATH_64)$(LOCAL_MODULE_STEM_64),)
+$(error $(LOCAL_PATH): LOCAL_MODULE_STEM_64 or LOCAL_MODULE_PATH_64 is required for LOCAL_MULTILIB := both for module $(LOCAL_MODULE))
+endif
+else #!LOCAL_MULTILIB == both
+LOCAL_NO_2ND_ARCH_MODULE_SUFFIX := true
 endif
 
-ifndef skip_build_from_source
+LOCAL_2ND_ARCH_VAR_PREFIX :=
+include $(BUILD_SYSTEM)/module_arch_supported.mk
 
-include $(BUILD_SYSTEM)/binary.mk
+ifeq ($(my_module_arch_supported),true)
+include $(BUILD_SYSTEM)/host_executable_internal.mk
+endif
 
-$(LOCAL_BUILT_MODULE): $(all_objects) $(all_libraries)
-	$(transform-host-o-to-executable)
+ifdef HOST_2ND_ARCH
+LOCAL_2ND_ARCH_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/module_arch_supported.mk
+ifeq ($(my_module_arch_supported),true)
+# Build for HOST_2ND_ARCH
+OVERRIDE_BUILT_MODULE_PATH :=
+LOCAL_BUILT_MODULE :=
+LOCAL_INSTALLED_MODULE :=
+LOCAL_MODULE_STEM :=
+LOCAL_BUILT_MODULE_STEM :=
+LOCAL_INSTALLED_MODULE_STEM :=
+LOCAL_INTERMEDIATE_TARGETS :=
 
-endif  # skip_build_from_source
+include $(BUILD_SYSTEM)/host_executable_internal.mk
+endif
+LOCAL_2ND_ARCH_VAR_PREFIX :=
+endif  # HOST_2ND_ARCH
+
+LOCAL_NO_2ND_ARCH_MODULE_SUFFIX :=
+my_module_arch_supported :=
diff --git a/core/host_executable_internal.mk b/core/host_executable_internal.mk
new file mode 100644
index 0000000..ffb35d2
--- /dev/null
+++ b/core/host_executable_internal.mk
@@ -0,0 +1,33 @@
+###########################################################
+## Standard rules for building an executable file.
+##
+## Additional inputs from base_rules.make:
+## None.
+###########################################################
+
+LOCAL_IS_HOST_MODULE := true
+ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
+LOCAL_MODULE_CLASS := EXECUTABLES
+endif
+ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
+LOCAL_MODULE_SUFFIX := $(HOST_EXECUTABLE_SUFFIX)
+endif
+
+$(call host-executable-hook)
+
+skip_build_from_source :=
+ifdef LOCAL_PREBUILT_MODULE_FILE
+ifeq (,$(call if-build-from-source,$(LOCAL_MODULE),$(LOCAL_PATH)))
+include $(BUILD_SYSTEM)/prebuilt_internal.mk
+skip_build_from_source := true
+endif
+endif
+
+ifndef skip_build_from_source
+
+include $(BUILD_SYSTEM)/binary.mk
+
+$(LOCAL_BUILT_MODULE): $(all_objects) $(all_libraries)
+	$(transform-host-o-to-executable)
+
+endif  # skip_build_from_source
diff --git a/core/host_shared_library.mk b/core/host_shared_library.mk
index 56ced01..de5e6ad 100644
--- a/core/host_shared_library.mk
+++ b/core/host_shared_library.mk
@@ -1,49 +1,37 @@
-###########################################################
-## Standard rules for building a normal shared library.
-##
-## Additional inputs from base_rules.make:
-## None.
-##
-## LOCAL_MODULE_SUFFIX will be set for you.
-###########################################################
+my_prefix := HOST_
+include $(BUILD_SYSTEM)/multilib.mk
 
-LOCAL_IS_HOST_MODULE := true
-
-ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
-LOCAL_MODULE_CLASS := SHARED_LIBRARIES
-endif
-ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
-LOCAL_MODULE_SUFFIX := $(HOST_SHLIB_SUFFIX)
-endif
-ifneq ($(strip $(OVERRIDE_BUILT_MODULE_PATH)),)
-$(error $(LOCAL_PATH): Illegal use of OVERRIDE_BUILT_MODULE_PATH)
-endif
-ifneq ($(strip $(LOCAL_MODULE_STEM)$(LOCAL_BUILT_MODULE_STEM)),)
-$(error $(LOCAL_PATH): Cannot set module stem for a library)
+ifndef my_module_multilib
+# By default we only build host module for the first arch.
+my_module_multilib := first
 endif
 
-$(call host-shared-library-hook)
+LOCAL_2ND_ARCH_VAR_PREFIX :=
+include $(BUILD_SYSTEM)/module_arch_supported.mk
 
-skip_build_from_source :=
-ifdef LOCAL_PREBUILT_MODULE_FILE
-ifeq (,$(call if-build-from-source,$(LOCAL_MODULE),$(LOCAL_PATH)))
-include $(BUILD_SYSTEM)/prebuilt_internal.mk
-skip_build_from_source := true
-endif
+ifeq ($(my_module_arch_supported),true)
+include $(BUILD_SYSTEM)/host_shared_library_internal.mk
 endif
 
-ifndef skip_build_from_source
+ifdef HOST_2ND_ARCH
+LOCAL_2ND_ARCH_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/module_arch_supported.mk
+ifeq ($(my_module_arch_supported),true)
+# Build for HOST_2ND_ARCH
+OVERRIDE_BUILT_MODULE_PATH :=
+LOCAL_BUILT_MODULE :=
+LOCAL_INSTALLED_MODULE :=
+LOCAL_MODULE_STEM :=
+LOCAL_BUILT_MODULE_STEM :=
+LOCAL_INSTALLED_MODULE_STEM :=
+LOCAL_INTERMEDIATE_TARGETS :=
 
-# Put the built modules of all shared libraries in a common directory
-# to simplify the link line.
-OVERRIDE_BUILT_MODULE_PATH := $(HOST_OUT_INTERMEDIATE_LIBRARIES)
+include $(BUILD_SYSTEM)/host_shared_library_internal.mk
+endif
+LOCAL_2ND_ARCH_VAR_PREFIX :=
+endif  # HOST_2ND_ARCH
 
-include $(BUILD_SYSTEM)/binary.mk
-
-$(LOCAL_BUILT_MODULE): $(all_objects) $(all_libraries) $(LOCAL_ADDITIONAL_DEPENDENCIES)
-	$(transform-host-o-to-shared-lib)
-
-endif  # skip_build_from_source
+my_module_arch_supported :=
 
 ###########################################################
 ## Copy headers to the install tree
diff --git a/core/host_shared_library_internal.mk b/core/host_shared_library_internal.mk
new file mode 100644
index 0000000..d9769d3
--- /dev/null
+++ b/core/host_shared_library_internal.mk
@@ -0,0 +1,46 @@
+###########################################################
+## Standard rules for building a normal shared library.
+##
+## Additional inputs from base_rules.make:
+## None.
+##
+## LOCAL_MODULE_SUFFIX will be set for you.
+###########################################################
+
+LOCAL_IS_HOST_MODULE := true
+
+ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+endif
+ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
+LOCAL_MODULE_SUFFIX := $(HOST_SHLIB_SUFFIX)
+endif
+ifneq ($(strip $(OVERRIDE_BUILT_MODULE_PATH)),)
+$(error $(LOCAL_PATH): Illegal use of OVERRIDE_BUILT_MODULE_PATH)
+endif
+ifneq ($(strip $(LOCAL_MODULE_STEM)$(LOCAL_BUILT_MODULE_STEM)),)
+$(error $(LOCAL_PATH): Cannot set module stem for a library)
+endif
+
+$(call host-shared-library-hook)
+
+skip_build_from_source :=
+ifdef LOCAL_PREBUILT_MODULE_FILE
+ifeq (,$(call if-build-from-source,$(LOCAL_MODULE),$(LOCAL_PATH)))
+include $(BUILD_SYSTEM)/prebuilt_internal.mk
+skip_build_from_source := true
+endif
+endif
+
+ifndef skip_build_from_source
+
+# Put the built modules of all shared libraries in a common directory
+# to simplify the link line.
+OVERRIDE_BUILT_MODULE_PATH := $($(LOCAL_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATE_LIBRARIES)
+
+include $(BUILD_SYSTEM)/binary.mk
+
+$(LOCAL_BUILT_MODULE): $(all_objects) $(all_libraries) $(LOCAL_ADDITIONAL_DEPENDENCIES)
+	$(transform-host-o-to-shared-lib)
+
+endif  # skip_build_from_source
diff --git a/core/host_static_library.mk b/core/host_static_library.mk
index 7d9b375..ab3f16e 100644
--- a/core/host_static_library.mk
+++ b/core/host_static_library.mk
@@ -1,30 +1,37 @@
-###########################################################
-## Standard rules for building a static library for the host.
-##
-## Additional inputs from base_rules.make:
-## None.
-##
-## LOCAL_MODULE_SUFFIX will be set for you.
-###########################################################
+my_prefix := HOST_
+include $(BUILD_SYSTEM)/multilib.mk
 
-ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
-LOCAL_MODULE_CLASS := STATIC_LIBRARIES
+ifndef my_module_multilib
+# By default we only build host module for the first arch.
+my_module_multilib := first
 endif
-ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
-LOCAL_MODULE_SUFFIX := .a
+
+LOCAL_2ND_ARCH_VAR_PREFIX :=
+include $(BUILD_SYSTEM)/module_arch_supported.mk
+
+ifeq ($(my_module_arch_supported),true)
+include $(BUILD_SYSTEM)/host_static_library_internal.mk
 endif
-ifneq ($(strip $(LOCAL_MODULE_STEM)$(LOCAL_BUILT_MODULE_STEM)),)
-$(error $(LOCAL_PATH): Cannot set module stem for a library)
+
+ifdef HOST_2ND_ARCH
+LOCAL_2ND_ARCH_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
+include $(BUILD_SYSTEM)/module_arch_supported.mk
+ifeq ($(my_module_arch_supported),true)
+# Build for HOST_2ND_ARCH
+OVERRIDE_BUILT_MODULE_PATH :=
+LOCAL_BUILT_MODULE :=
+LOCAL_INSTALLED_MODULE :=
+LOCAL_MODULE_STEM :=
+LOCAL_BUILT_MODULE_STEM :=
+LOCAL_INSTALLED_MODULE_STEM :=
+LOCAL_INTERMEDIATE_TARGETS :=
+
+include $(BUILD_SYSTEM)/host_static_library_internal.mk
 endif
-LOCAL_UNINSTALLABLE_MODULE := true
+LOCAL_2ND_ARCH_VAR_PREFIX :=
+endif  # HOST_2ND_ARCH
 
-LOCAL_IS_HOST_MODULE := true
-
-include $(BUILD_SYSTEM)/binary.mk
-
-$(LOCAL_BUILT_MODULE): $(built_whole_libraries)
-$(LOCAL_BUILT_MODULE): $(all_objects)
-	$(transform-host-o-to-static-lib)
+my_module_arch_supported :=
 
 ###########################################################
 ## Copy headers to the install tree
diff --git a/core/host_static_library_internal.mk b/core/host_static_library_internal.mk
new file mode 100644
index 0000000..a533cf5
--- /dev/null
+++ b/core/host_static_library_internal.mk
@@ -0,0 +1,27 @@
+###########################################################
+## Standard rules for building a static library for the host.
+##
+## Additional inputs from base_rules.make:
+## None.
+##
+## LOCAL_MODULE_SUFFIX will be set for you.
+###########################################################
+
+ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
+LOCAL_MODULE_CLASS := STATIC_LIBRARIES
+endif
+ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
+LOCAL_MODULE_SUFFIX := .a
+endif
+ifneq ($(strip $(LOCAL_MODULE_STEM)$(LOCAL_BUILT_MODULE_STEM)),)
+$(error $(LOCAL_PATH): Cannot set module stem for a library)
+endif
+LOCAL_UNINSTALLABLE_MODULE := true
+
+LOCAL_IS_HOST_MODULE := true
+
+include $(BUILD_SYSTEM)/binary.mk
+
+$(LOCAL_BUILT_MODULE): $(built_whole_libraries)
+$(LOCAL_BUILT_MODULE): $(all_objects)
+	$(transform-host-o-to-static-lib)
diff --git a/core/host_test_internal.mk b/core/host_test_internal.mk
index 650b9c6..426c400 100644
--- a/core/host_test_internal.mk
+++ b/core/host_test_internal.mk
@@ -5,7 +5,11 @@
 LOCAL_CFLAGS += -DGTEST_OS_LINUX -DGTEST_HAS_STD_STRING -O0 -g
 LOCAL_C_INCLUDES +=  external/gtest/include
 
+ifneq ($(filter libc++,$(LOCAL_SHARED_LIBRARIES)),)
+LOCAL_STATIC_LIBRARIES += libgtest_libc++_host libgtest_main_libc++_host
+else
 LOCAL_STATIC_LIBRARIES += libgtest_host libgtest_main_host
 LOCAL_SHARED_LIBRARIES +=
+endif
 
 LOCAL_LDLIBS += -lpthread
diff --git a/core/java_library.mk b/core/java_library.mk
index 343b27e..dffc7d9 100644
--- a/core/java_library.mk
+++ b/core/java_library.mk
@@ -93,15 +93,10 @@
 
 else # ! boot jar
 $(built_odex): PRIVATE_MODULE := $(LOCAL_MODULE)
-$(built_odex): PRIVATE_DEX_LOCATION := $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE))
-$(built_odex): PRIVATE_DEX_PREOPT_IMAGE := $(LOCAL_DEX_PREOPT_IMAGE)
-# Make sure the boot jars get dex-preopt-ed first
-$(built_odex) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT)
-$(built_odex) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS)
-$(built_odex) : $(LOCAL_DEX_PREOPT_IMAGE)
-$(built_odex) : $(common_javalib.jar)
+# Use pattern rule - we may have multiple built odex files.
+$(built_odex) : $(dir $(LOCAL_BUILT_MODULE))% : $(common_javalib.jar)
 	@echo "Dexpreopt Jar: $(PRIVATE_MODULE) ($@)"
-	$(call dexpreopt-one-file,$(PRIVATE_DEX_PREOPT_IMAGE),$<,$(PRIVATE_DEX_LOCATION),$@)
+	$(call dexpreopt-one-file,$<,$@)
 
 $(LOCAL_BUILT_MODULE) : $(common_javalib.jar) | $(ACP)
 	$(call copy-file-to-target)
diff --git a/core/main.mk b/core/main.mk
index 21a2fe3..048d2c3 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -110,7 +110,6 @@
 $(info Checking build tools versions...)
 
 ifneq ($(HOST_OS),windows)
-ifneq ($(HOST_OS)-$(HOST_ARCH),darwin-ppc)
 # check for a case sensitive file system
 ifneq (a,$(shell mkdir -p $(OUT_DIR) ; \
                 echo a > $(OUT_DIR)/casecheck.txt; \
@@ -123,7 +122,6 @@
 $(error Case-insensitive filesystems not supported)
 endif
 endif
-endif
 
 # Make sure that there are no spaces in the absolute path; the
 # build system can't deal with them.
@@ -446,12 +444,6 @@
 endif
 
 # Bring in all modules that need to be built.
-ifeq ($(HOST_OS)-$(HOST_ARCH),darwin-ppc)
-SDK_ONLY := true
-$(info Building the SDK under darwin-ppc is actually obsolete and unsupported.)
-$(error stop)
-endif
-
 ifeq ($(HOST_OS),windows)
 SDK_ONLY := true
 endif
diff --git a/core/module_arch_supported.mk b/core/module_arch_supported.mk
index 753a29e..15fd648 100644
--- a/core/module_arch_supported.mk
+++ b/core/module_arch_supported.mk
@@ -2,14 +2,15 @@
 ## Determine if a module can be built for an arch
 ##
 ## Inputs from module makefile:
+## my_prefix   TARGET_ or HOST_
 ## my_module_multilib
-## LOCAL_MODULE_TARGET_ARCH
-## LOCAL_MODULE_TARGET_ARCH_WARN
-## LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH
-## LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH_WARN
+## LOCAL_MODULE_$(my_prefix)ARCH
+## LOCAL_MODULE_$(my_prefix)ARCH_WARN
+## LOCAL_MODULE_UNSUPPORTED_$(my_prefix)ARCH
+## LOCAL_MODULE_UNSUPPORTED_$(my_prefix)ARCH_WARN
 ##
 ## Inputs from build system:
-## TARGET_IS_64_BIT
+## $(my_prefix)IS_64_BIT
 ## LOCAL_2ND_ARCH_VAR_PREFIX
 ##
 ## Outputs:
@@ -23,9 +24,9 @@
 endif
 
 ifeq ($(LOCAL_2ND_ARCH_VAR_PREFIX),)
-ifeq ($(TARGET_IS_64_BIT)|$(my_module_multilib),true|32)
+ifeq ($($(my_prefix)IS_64_BIT)|$(my_module_multilib),true|32)
 my_module_arch_supported := false
-else ifeq ($(TARGET_IS_64_BIT)|$(my_module_multilib),|64)
+else ifeq ($($(my_prefix)IS_64_BIT)|$(my_module_multilib),|64)
 my_module_arch_supported := false
 else ifeq ($(call directory_is_64_bit_blacklisted,$(LOCAL_PATH)),true)
 my_module_arch_supported := false
@@ -38,24 +39,24 @@
 endif
 endif # LOCAL_2ND_ARCH_VAR_PREFIX
 
-ifneq (,$(LOCAL_MODULE_TARGET_ARCH))
-ifeq (,$(filter $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_TARGET_ARCH)))
+ifneq (,$(LOCAL_MODULE_$(my_prefix)ARCH))
+ifeq (,$(filter $($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_$(my_prefix)ARCH)))
 my_module_arch_supported := false
 endif
 endif
 
-ifneq (,$(LOCAL_MODULE_TARGET_ARCH_WARN))
-ifeq (,$(filter $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_TARGET_ARCH_WARN)))
+ifneq (,$(LOCAL_MODULE_$(my_prefix)ARCH_WARN))
+ifeq (,$(filter $($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_$(my_prefix)ARCH_WARN)))
 my_module_arch_supported := false
-$(warning $(LOCAL_MODULE): architecture $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH) not supported)
+$(warning $(LOCAL_MODULE): architecture $($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH) not supported)
 endif
 endif
 
-ifneq (,$(filter $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH)))
+ifneq (,$(filter $($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_UNSUPPORTED_$(my_prefix)ARCH)))
 my_module_arch_supported := false
 endif
 
-ifneq (,$(filter $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_UNSUPPORTED_TARGET_ARCH_WARN)))
+ifneq (,$(filter $($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),$(LOCAL_MODULE_UNSUPPORTED_$(my_prefix)ARCH_WARN)))
 my_module_arch_supported := false
-$(warning $(LOCAL_MODULE): architecture $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH) unsupported)
+$(warning $(LOCAL_MODULE): architecture $($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH) unsupported)
 endif
diff --git a/core/multilib.mk b/core/multilib.mk
index f630c94..a3ced65 100644
--- a/core/multilib.mk
+++ b/core/multilib.mk
@@ -1,4 +1,4 @@
-# Translate LOCAL_32_BIT_ONLY and LOCAL_NO_2ND_ARCH to LOCAL_MULTILIB,
+# Translate LOCAL_32_BIT_ONLY to LOCAL_MULTILIB,
 # and check LOCAL_MULTILIB is a valid value.  Returns module's multilib
 # setting in my_module_multilib, or empty if not set.
 
diff --git a/core/package.mk b/core/package.mk
index c7d68d9..78b65db 100644
--- a/core/package.mk
+++ b/core/package.mk
@@ -1,8 +1,8 @@
 # We don't automatically set up rules to build packages for both
 # TARGET_ARCH and TARGET_2ND_ARCH.
-# By default, an package is built for TARGET_ARCH.
 # To build it for TARGET_2ND_ARCH in a 64bit product, use "LOCAL_MULTILIB := 32".
 
+my_prefix := TARGET_
 include $(BUILD_SYSTEM)/multilib.mk
 
 ifeq ($(TARGET_SUPPORTS_32_BIT_APPS)|$(TARGET_SUPPORTS_64_BIT_APPS),true|true)
diff --git a/core/package_internal.mk b/core/package_internal.mk
index 598c065..d72933a 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -345,13 +345,7 @@
 # Define the rule to build the actual package.
 $(LOCAL_BUILT_MODULE): $(AAPT) | $(ZIPALIGN)
 ifdef LOCAL_DEX_PREOPT
-$(LOCAL_BUILT_MODULE): PRIVATE_DEX_LOCATION := $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE))
 $(LOCAL_BUILT_MODULE): PRIVATE_BUILT_ODEX := $(built_odex)
-$(LOCAL_BUILT_MODULE): PRIVATE_DEX_PREOPT_IMAGE := $(LOCAL_DEX_PREOPT_IMAGE)
-# Make sure the boot jars get dexpreopt-ed first
-$(LOCAL_BUILT_MODULE) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT)
-$(LOCAL_BUILT_MODULE) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS)
-$(LOCAL_BUILT_MODULE) : $(LOCAL_DEX_PREOPT_IMAGE)
 
 # built_odex is byproduct of LOCAL_BUILT_MODULE without its own build recipe.
 $(built_odex) : $(LOCAL_BUILT_MODULE)
@@ -385,7 +379,7 @@
 endif
 	$(sign-package)
 ifdef LOCAL_DEX_PREOPT
-	$(call dexpreopt-one-file,$(PRIVATE_DEX_PREOPT_IMAGE),$@,$(PRIVATE_DEX_LOCATION),$(PRIVATE_BUILT_ODEX))
+	$(call dexpreopt-one-file,$@,$(PRIVATE_BUILT_ODEX))
 ifneq (nostripping,$(LOCAL_DEX_PREOPT))
 	$(call dexpreopt-remove-classes.dex,$@)
 endif
diff --git a/core/pdk_config.mk b/core/pdk_config.mk
index f5fdd15..51f2e17 100644
--- a/core/pdk_config.mk
+++ b/core/pdk_config.mk
@@ -192,12 +192,16 @@
 ifneq (,$(filter platform platform-java, $(MAKECMDGOALS))$(filter true,$(TARGET_BUILD_PDK)))
 # files under $(PRODUCT_OUT)/symbols to help debugging.
 # Source not included to PDK due to dependency issue, so provide symbols instead.
+
+# We may not be building all of them.
+# The platform.zip just silently ignores the nonexistent ones.
 PDK_SYMBOL_FILES_LIST := \
-	system/bin/app_process
+    system/bin/app_process32 \
+    system/bin/app_process64
 
 ifdef PDK_FUSION_PLATFORM_ZIP
 # symbols should be explicitly pulled for fusion build
-$(foreach f,$(PDK_SYMBOL_FILES_LIST),\
+$(foreach f,$(filter $(PDK_SYMBOL_FILES_LIST), $(_pdk_fusion_file_list)),\
   $(eval $(call add-dependency,$(PRODUCT_OUT)/$(f),$(PRODUCT_OUT)/symbols/$(f))))
 endif # PLATFORM_ZIP
 endif # platform.zip build or PDK
diff --git a/core/prebuilt.mk b/core/prebuilt.mk
index 5f91110..33f5dc6 100644
--- a/core/prebuilt.mk
+++ b/core/prebuilt.mk
@@ -7,32 +7,43 @@
 ###########################################################
 
 ifdef LOCAL_IS_HOST_MODULE
-include $(BUILD_SYSTEM)/prebuilt_internal.mk
-else #!LOCAL_IS_HOST_MODULE
+  my_prefix := HOST_
+else
+  my_prefix := TARGET_
+endif
 
 include $(BUILD_SYSTEM)/multilib.mk
 
-ifndef my_module_multilib
-# prebuilts default to building for either architecture,
-# the first if its supported, otherwise the second.
-my_module_multilib := both
-endif
+my_skip_non_preferred_arch :=
 
 # check if first arch is supported
 include $(BUILD_SYSTEM)/module_arch_supported.mk
 ifeq ($(my_module_arch_supported),true)
 # first arch is supported
 include $(BUILD_SYSTEM)/prebuilt_internal.mk
-else ifneq (,$(TARGET_2ND_ARCH))
+ifneq ($(my_module_multilib),both)
+my_skip_non_preferred_arch := true
+endif # $(my_module_multilib)
+endif # $(my_module_arch_supported)
+
+ifndef my_skip_non_preferred_arch
+ifneq (,$($(my_prefix)2ND_ARCH))
 # check if secondary arch is supported
-LOCAL_2ND_ARCH_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX)
+LOCAL_2ND_ARCH_VAR_PREFIX := $($(my_prefix)2ND_ARCH_VAR_PREFIX)
 include $(BUILD_SYSTEM)/module_arch_supported.mk
 ifeq ($(my_module_arch_supported),true)
 # secondary arch is supported
+OVERRIDE_BUILT_MODULE_PATH :=
+LOCAL_BUILT_MODULE :=
+LOCAL_INSTALLED_MODULE :=
+LOCAL_MODULE_STEM :=
+LOCAL_BUILT_MODULE_STEM :=
+LOCAL_INSTALLED_MODULE_STEM :=
+LOCAL_INTERMEDIATE_TARGETS :=
 include $(BUILD_SYSTEM)/prebuilt_internal.mk
-endif
-endif # TARGET_2ND_ARCH
-endif # !LOCAL_IS_HOST_MODULE
+endif # $(my_module_arch_supported)
+endif # $($(my_prefix)2ND_ARCH)
+endif # $(my_skip_non_preferred_arch) not true
 
 LOCAL_2ND_ARCH_VAR_PREFIX :=
 
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index bf519ee..184ebb0 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -19,21 +19,22 @@
 # Not much sense to check build prebuilts
 LOCAL_DONT_CHECK_MODULE := true
 
+my_32_64_bit_suffix := $(if $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)IS_64_BIT),64,32)
+
 ifdef LOCAL_PREBUILT_MODULE_FILE
   my_prebuilt_src_file := $(LOCAL_PREBUILT_MODULE_FILE)
 else
-  ifdef LOCAL_SRC_FILES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
-    my_prebuilt_src_file := $(LOCAL_PATH)/$(LOCAL_SRC_FILES_$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH))
+  ifdef LOCAL_SRC_FILES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
+    my_prebuilt_src_file := $(LOCAL_PATH)/$(LOCAL_SRC_FILES_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH))
   else
-    my_prebuilt_src_file := $(LOCAL_PATH)/$(LOCAL_SRC_FILES)
+    ifdef LOCAL_SRC_FILES_$(my_32_64_bit_suffix)
+      my_prebuilt_src_file := $(LOCAL_PATH)/$(LOCAL_SRC_FILES_$(my_32_64_bit_suffix))
+    else
+      my_prebuilt_src_file := $(LOCAL_PATH)/$(LOCAL_SRC_FILES)
+    endif
   endif
 endif
 
-ifdef LOCAL_IS_HOST_MODULE
-  my_prefix := HOST_
-else
-  my_prefix := TARGET_
-endif
 ifeq (SHARED_LIBRARIES,$(LOCAL_MODULE_CLASS))
   # Put the built targets of all shared libraries in a common directory
   # to simplify the link line.
@@ -159,13 +160,7 @@
 include $(BUILD_SYSTEM)/dex_preopt_odex_install.mk
 #######################################
 ifdef LOCAL_DEX_PREOPT
-$(built_module): PRIVATE_DEX_PREOPT_IMAGE := $(LOCAL_DEX_PREOPT_IMAGE)
-$(built_module): PRIVATE_DEX_LOCATION := $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE))
 $(built_module): PRIVATE_BUILT_ODEX := $(built_odex)
-# Make sure the boot jars get dexpreopt-ed first
-$(built_module) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_BUILT_BOOT_PREOPT)
-$(built_module) : $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS)
-(built_module) : $(LOCAL_DEX_PREOPT_IMAGE)
 # built_odex is byproduct of LOCAL_BUILT_MODULE without its own build recipe.
 $(built_odex) : $(LOCAL_BUILT_MODULE)
 endif # LOCAL_DEX_PREOPT
@@ -179,7 +174,7 @@
 	$(sign-package)
 endif
 ifdef LOCAL_DEX_PREOPT
-	$(call dexpreopt-one-file,$(PRIVATE_DEX_PREOPT_IMAGE),$@,$(PRIVATE_DEX_LOCATION),$(PRIVATE_BUILT_ODEX))
+	$(call dexpreopt-one-file,$@,$(PRIVATE_BUILT_ODEX))
 endif
 	$(align-package)
 
diff --git a/core/product_config.mk b/core/product_config.mk
index 171c394..7f86d81 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -164,7 +164,7 @@
 
 # Default to building dalvikvm on hosts that support it...
 ifeq ($(HOST_OS),linux)
-ifeq ($(BUILD_HOST_64bit),)
+ifneq ($(HOST_ARCH),x86_64)
 # ... or if the if the option is already set
 ifeq ($(WITH_HOST_DALVIK),)
   WITH_HOST_DALVIK := true
diff --git a/core/shared_library.mk b/core/shared_library.mk
index 95a8d7b..178e625 100644
--- a/core/shared_library.mk
+++ b/core/shared_library.mk
@@ -10,6 +10,7 @@
 endif
 endif
 
+my_prefix := TARGET_
 include $(BUILD_SYSTEM)/multilib.mk
 
 ifndef my_module_multilib
diff --git a/core/static_library.mk b/core/static_library.mk
index bedefd0..854cbfc 100644
--- a/core/static_library.mk
+++ b/core/static_library.mk
@@ -1,3 +1,4 @@
+my_prefix := TARGET_
 include $(BUILD_SYSTEM)/multilib.mk
 
 ifndef my_module_multilib
diff --git a/core/static_library_internal.mk b/core/static_library_internal.mk
index 2d3468c..cabe823 100644
--- a/core/static_library_internal.mk
+++ b/core/static_library_internal.mk
@@ -28,7 +28,6 @@
 $(all_objects) : PRIVATE_TARGET_GLOBAL_CPPFLAGS :=
 endif
 
-$(LOCAL_BUILT_MODULE): PRIVATE_2ND_ARCH_VAR_PREFIX := $(LOCAL_2ND_ARCH_VAR_PREFIX)
 $(LOCAL_BUILT_MODULE) : $(built_whole_libraries)
 $(LOCAL_BUILT_MODULE) : $(all_objects)
 	$(transform-o-to-static-lib)
diff --git a/core/target_test_internal.mk b/core/target_test_internal.mk
index 7b99678..49ea518 100644
--- a/core/target_test_internal.mk
+++ b/core/target_test_internal.mk
@@ -5,6 +5,9 @@
 LOCAL_CFLAGS += -DGTEST_OS_LINUX_ANDROID -DGTEST_HAS_STD_STRING
 
 LOCAL_C_INCLUDES += external/gtest/include
+ifneq ($(filter libc++,$(LOCAL_SHARED_LIBRARIES)),)
+LOCAL_STATIC_LIBRARIES += libgtest_libc++ libgtest_main_libc++
+else
 LOCAL_STATIC_LIBRARIES += libgtest libgtest_main
 
 ifndef LOCAL_SDK_VERSION
@@ -14,6 +17,7 @@
 LOCAL_SHARED_LIBRARIES += libstlport
 LOCAL_STATIC_LIBRARIES += libstdc++
 endif
+endif
 
 ifndef LOCAL_MODULE_PATH
 LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
diff --git a/core/tasks/tools/package-modules.mk b/core/tasks/tools/package-modules.mk
index 19e756a..890d26a 100644
--- a/core/tasks/tools/package-modules.mk
+++ b/core/tasks/tools/package-modules.mk
@@ -31,7 +31,7 @@
     $(if $(filter 1,$(words $(b))),\
       $(eval my_built_modules += $(b))\
       $(eval my_copy_dest := $(patsubst data/%,DATA/%,\
-                               $(patsubst system/%,SYSTEM/%,\
+                               $(patsubst system/%,DATA/%,\
                                  $(patsubst $(PRODUCT_OUT)/%,%,$(i)))))\
       $(eval my_copy_pairs += $(b):$(my_staging_dir)/$(my_copy_dest)),\
       $(warning Unexpected module built file '$(b)' for module '$(m)'))\
diff --git a/envsetup.sh b/envsetup.sh
index 45768c1..bcfa893 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -187,7 +187,7 @@
             ;;
     esac
     if [ -n "$ANDROID_EMULATOR_PREBUILTS" -a -d "$ANDROID_EMULATOR_PREBUILTS" ]; then
-        ANDROID_BUILD_PATHS=$ANDROID_EMULATOR_PREBUILTS:$ANDROID_BUILD_PATHS
+        ANDROID_BUILD_PATHS=$ANDROID_BUILD_PATHS:$ANDROID_EMULATOR_PREBUILTS
         export ANDROID_EMULATOR_PREBUILTS
     fi
 
diff --git a/libs/host/Android.mk b/libs/host/Android.mk
index 74afa55..c67afbb 100644
--- a/libs/host/Android.mk
+++ b/libs/host/Android.mk
@@ -2,7 +2,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-	CopyFile.c
+    CopyFile.c
 
 ifeq ($(HOST_OS),cygwin)
 LOCAL_CFLAGS += -DWIN32_EXE
diff --git a/target/board/generic/BoardConfig.mk b/target/board/generic/BoardConfig.mk
index c30cc75..6d58b1c 100644
--- a/target/board/generic/BoardConfig.mk
+++ b/target/board/generic/BoardConfig.mk
@@ -78,6 +78,7 @@
 BOARD_SEPOLICY_DIRS += build/target/board/generic/sepolicy
 BOARD_SEPOLICY_UNION += \
         adbd.te \
+        app.te \
         bootanim.te \
         device.te \
         domain.te \
@@ -88,4 +89,5 @@
         rild.te \
         shell.te \
         surfaceflinger.te \
-        system_server.te
+        system_server.te \
+        zygote.te
diff --git a/target/board/generic/sepolicy/app.te b/target/board/generic/sepolicy/app.te
new file mode 100644
index 0000000..fd33453
--- /dev/null
+++ b/target/board/generic/sepolicy/app.te
@@ -0,0 +1 @@
+allow appdomain qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic/sepolicy/bootanim.te b/target/board/generic/sepolicy/bootanim.te
index d6506e1..a5a84f9 100644
--- a/target/board/generic/sepolicy/bootanim.te
+++ b/target/board/generic/sepolicy/bootanim.te
@@ -1,2 +1,3 @@
 allow bootanim self:process execmem;
 allow bootanim ashmem_device:chr_file execute;
+allow bootanim qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic/sepolicy/surfaceflinger.te b/target/board/generic/sepolicy/surfaceflinger.te
index 4c35469..6712789 100644
--- a/target/board/generic/sepolicy/surfaceflinger.te
+++ b/target/board/generic/sepolicy/surfaceflinger.te
@@ -1,2 +1,3 @@
 allow surfaceflinger self:process execmem;
 allow surfaceflinger ashmem_device:chr_file execute;
+allow surfaceflinger qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic/sepolicy/zygote.te b/target/board/generic/sepolicy/zygote.te
new file mode 100644
index 0000000..a5da574
--- /dev/null
+++ b/target/board/generic/sepolicy/zygote.te
@@ -0,0 +1 @@
+allow zygote qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic_arm64/BoardConfig.mk b/target/board/generic_arm64/BoardConfig.mk
index 9d3bcc0..7f8f3dc 100644
--- a/target/board/generic_arm64/BoardConfig.mk
+++ b/target/board/generic_arm64/BoardConfig.mk
@@ -48,7 +48,7 @@
 USE_OPENGL_RENDERER := true
 
 TARGET_USERIMAGES_USE_EXT4 := true
-BOARD_SYSTEMIMAGE_PARTITION_SIZE := 576716800
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 681574400
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
 BOARD_CACHEIMAGE_PARTITION_SIZE := 69206016
 BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
diff --git a/target/board/generic_x86/BoardConfig.mk b/target/board/generic_x86/BoardConfig.mk
index 67f0ecf..727d3db 100644
--- a/target/board/generic_x86/BoardConfig.mk
+++ b/target/board/generic_x86/BoardConfig.mk
@@ -35,7 +35,7 @@
 USE_OPENGL_RENDERER := true
 
 TARGET_USERIMAGES_USE_EXT4 := true
-BOARD_SYSTEMIMAGE_PARTITION_SIZE := 576716800
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 681574400
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
 BOARD_CACHEIMAGE_PARTITION_SIZE := 69206016
 BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
@@ -44,7 +44,9 @@
 
 BOARD_SEPOLICY_DIRS += build/target/board/generic_x86/sepolicy
 BOARD_SEPOLICY_UNION += \
+        app.te \
         adbd.te \
+        bootanim.te \
         device.te \
         domain.te \
         file.te \
@@ -55,5 +57,6 @@
         qemud.te \
         rild.te \
         shell.te \
+        surfaceflinger.te \
         system_server.te \
         zygote.te
diff --git a/target/board/generic_x86/sepolicy/app.te b/target/board/generic_x86/sepolicy/app.te
new file mode 100644
index 0000000..fd33453
--- /dev/null
+++ b/target/board/generic_x86/sepolicy/app.te
@@ -0,0 +1 @@
+allow appdomain qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic_x86/sepolicy/bootanim.te b/target/board/generic_x86/sepolicy/bootanim.te
new file mode 100644
index 0000000..762a573
--- /dev/null
+++ b/target/board/generic_x86/sepolicy/bootanim.te
@@ -0,0 +1 @@
+allow bootanim qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic_x86/sepolicy/surfaceflinger.te b/target/board/generic_x86/sepolicy/surfaceflinger.te
new file mode 100644
index 0000000..865405c
--- /dev/null
+++ b/target/board/generic_x86/sepolicy/surfaceflinger.te
@@ -0,0 +1 @@
+allow surfaceflinger qemu_device:chr_file rw_file_perms;
diff --git a/target/board/generic_x86/sepolicy/zygote.te b/target/board/generic_x86/sepolicy/zygote.te
index 93993a4..d34c4a1 100644
--- a/target/board/generic_x86/sepolicy/zygote.te
+++ b/target/board/generic_x86/sepolicy/zygote.te
@@ -1,2 +1,3 @@
 allow zygote self:process execmem;
 allow zygote self:capability sys_nice;
+allow zygote qemu_device:chr_file rw_file_perms;
diff --git a/target/product/base.mk b/target/product/base.mk
index 6dd77a4..548fb31 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -58,8 +58,10 @@
     libmedia_jni \
     libmediaplayerservice \
     libmtp \
+    libnetd_client \
     libnetlink \
     libnetutils \
+    libpdfrenderer \
     libreference-ril \
     libreverbwrapper \
     libril \
diff --git a/target/product/core_64_bit.mk b/target/product/core_64_bit.mk
index e2fc1a6..971b6bd 100644
--- a/target/product/core_64_bit.mk
+++ b/target/product/core_64_bit.mk
@@ -31,6 +31,3 @@
 
 TARGET_SUPPORTS_32_BIT_APPS := true
 TARGET_SUPPORTS_64_BIT_APPS := true
-
-# Disable DEXPREOPT until we have multilib support (bug 14694978).
-WITH_DEXPREOPT := false
diff --git a/target/product/core_base.mk b/target/product/core_base.mk
index d63e39f..0f793bb 100644
--- a/target/product/core_base.mk
+++ b/target/product/core_base.mk
@@ -32,7 +32,6 @@
     libaudioutils \
     libfilterpack_imageproc \
     libgabi++ \
-    libkeystore \
     libmdnssd \
     libnfc_ndef \
     libportable \
@@ -58,28 +57,7 @@
     libvariablespeed \
     libwebrtc_audio_preprocessing \
     mdnsd \
-    mms-common \
     requestsync \
-    telephony-common \
-    voip-common \
     wifi-service
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_minimal.mk)
-# Override the PRODUCT_BOOT_JARS set in core_minimal.mk. The order matters.
-PRODUCT_BOOT_JARS := \
-    core \
-    conscrypt \
-    okhttp \
-    core-junit \
-    bouncycastle \
-    ext \
-    framework \
-    framework2 \
-    telephony-common \
-    voip-common \
-    mms-common \
-    android.policy \
-    services \
-    apache-xml \
-    webviewchromium \
-    wifi-service
diff --git a/target/product/core_minimal.mk b/target/product/core_minimal.mk
index 7fbdee6..3ecad4c 100644
--- a/target/product/core_minimal.mk
+++ b/target/product/core_minimal.mk
@@ -52,14 +52,18 @@
     libdrmframework \
     libdrmframework_jni \
     libfilterfw \
+    libkeystore \
     libsqlite_jni \
     libwilhelm \
     logd \
     make_ext4fs \
+    mms-common \
     screencap \
     sensorservice \
+    telephony-common \
     uiautomator \
     uncrypt \
+    voip-common \
     webview \
     wifi-service
 
@@ -73,6 +77,9 @@
     ext \
     framework \
     framework2 \
+    telephony-common \
+    voip-common \
+    mms-common \
     android.policy \
     services \
     apache-xml \
diff --git a/target/product/core_tiny.mk b/target/product/core_tiny.mk
index 9c40206..43de63d 100644
--- a/target/product/core_tiny.mk
+++ b/target/product/core_tiny.mk
@@ -18,6 +18,7 @@
 
 PRODUCT_PACKAGES := \
     Bluetooth \
+    CalendarProvider \
     ContactsProvider \
     CertInstaller \
     FusedLocation \
@@ -57,6 +58,7 @@
     libOpenSLES \
     libdownmix \
     libfilterfw \
+    libkeystore \
     libsqlite_jni \
     libwilhelm \
     make_ext4fs \
diff --git a/target/product/generic_no_telephony.mk b/target/product/generic_no_telephony.mk
index b4f2a7b..3ee6de8 100644
--- a/target/product/generic_no_telephony.mk
+++ b/target/product/generic_no_telephony.mk
@@ -65,7 +65,6 @@
 $(call inherit-product-if-exists, external/google-fonts/coming-soon/fonts.mk)
 $(call inherit-product-if-exists, external/noto-fonts/fonts.mk)
 $(call inherit-product-if-exists, external/naver-fonts/fonts.mk)
-$(call inherit-product-if-exists, external/sil-fonts/fonts.mk)
 $(call inherit-product-if-exists, frameworks/base/data/keyboards/keyboards.mk)
 $(call inherit-product-if-exists, frameworks/webview/chromium/chromium.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core.mk)
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index 2e576c1..d4f2355 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -83,7 +83,6 @@
 $(call inherit-product-if-exists, external/google-fonts/coming-soon/fonts.mk)
 $(call inherit-product-if-exists, external/noto-fonts/fonts.mk)
 $(call inherit-product-if-exists, external/naver-fonts/fonts.mk)
-$(call inherit-product-if-exists, external/sil-fonts/fonts.mk)
 $(call inherit-product-if-exists, frameworks/base/data/keyboards/keyboards.mk)
 $(call inherit-product-if-exists, frameworks/webview/chromium/chromium.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core.mk)
diff --git a/tools/acp/Android.mk b/tools/acp/Android.mk
index 5e0e2e4..33c5567 100644
--- a/tools/acp/Android.mk
+++ b/tools/acp/Android.mk
@@ -6,7 +6,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES := \
-	acp.c
+    acp.c
 
 ifeq ($(HOST_OS),cygwin)
 LOCAL_CFLAGS += -DWIN32_EXE
@@ -23,4 +23,3 @@
 LOCAL_ACP_UNAVAILABLE := true
 
 include $(BUILD_HOST_EXECUTABLE)
-
diff --git a/tools/droiddoc/templates-sdk/assets/css/default.css b/tools/droiddoc/templates-sdk/assets/css/default.css
index aa30c8a..4b99ca1 100644
--- a/tools/droiddoc/templates-sdk/assets/css/default.css
+++ b/tools/droiddoc/templates-sdk/assets/css/default.css
@@ -98,7 +98,8 @@
 #devdoc-nav.fixed {
   position: fixed;
   margin:0;
-  top: 20px; }
+  top: 65px; /* sticky-header height + 20px gutter */
+}
 
 #devdoc-nav span.small {
   font-size:12px;
@@ -1378,8 +1379,7 @@
   .training-nav-top, .training-nav-bottom,
   #doc-col .content-footer,
   .nav-x, .nav-y,
-  .paging-links,
-  a.totop {
+  .paging-links {
       display: none !important;
   }
 
@@ -1504,7 +1504,8 @@
 Header, Login, Nav-X, Search
 */
 #header {
-  padding: 2.2em 0 0.2em 0;
+  margin: 0;
+  padding: 0;
 }
 #header:before, #header:after {
   content: "";
@@ -1841,8 +1842,8 @@
 #qv-wrapper {
   float:right;
   clear:right;
-  margin:0 0 0 20px; /* negative top-margin to counter the content-header bottom margin */
-  padding:0 0 20px;
+  margin:0 0 0 30px; /* negative top-margin to counter the content-header bottom margin */
+  padding:0 0 30px;
 }
 
 #tb-wrapper {
@@ -2884,26 +2885,6 @@
   margin:0 0 10px;
 }
 
-#devdoc-nav a.totop {
-  display:block;
-  top:0;
-  width:inherit;
-  background: transparent url(../images/styles/gototop.png) no-repeat scroll 50% 50%;
-  text-indent:-9999em;
-}
-#devdoc-nav a.totop {
-  position:fixed;
-  display:none;
-}
-#devdoc-nav a.totop:hover {
-  background-color:#33B5E5;
-}
-
-.content-footer a.totop {
-  text-transform:uppercase;
-  line-height:30px;
-}
-
 .expandable {
   height:34px;
   padding-left:20px;
@@ -3968,13 +3949,174 @@
   z-index:100;
 }
 
+
+
+
+
+/************ STICKY NAV BAR ******************/
+
+#header-wrapper {
+  background: #f9f9f9;
+  margin: 0 -10px 0 -10px;
+  padding: 31px 10px 0px 10px;
+  position: relative;
+}
+#header-wrapper #nav-x div.wrap {
+  max-width: 940px;
+  height: 38px;
+}
+#header-wrapper #nav-x ul.nav-x li {
+  margin-right: 36px !important;
+  margin-top: 5px;
+  margin-bottom: 0px;
+  height: 30px;
+}
+#header-wrapper #nav-x > div.wrap ul.nav-x li.active  {
+  color: #669900;
+  border-bottom: 3px solid #669900;
+}
+#header-wrapper #nav-x > div.wrap ul.nav-x li.active a {
+  color: #669900;
+}
+#header-wrapper #nav-x > div.wrap ul.nav-x a {
+  font-size: 14.5px;
+}
+#header-wrapper .developer-console-btn {
+  float: right;
+  background: #fefefe;
+  border-radius: 4px;
+  padding: 8px 14px;
+  box-shadow: 1px 1px 0px #7a7a7a;
+  font-size: 14px;
+  margin-top: -6px;
+  cursor: pointer;
+  color: #464646;
+  margin-right: 20px;
+}
+/* not currently used */
+#header-wrapper .shadow {
+  width: 1034px;
+  height: 4px;
+  position: absolute;
+  left: 50%;
+  margin-left: -517px;
+  bottom: -4px;
+  background-image: url(../images/header-shadow.png);
+}
+
+#context {
+  clear: both;
+  padding-top: 14px;
+}
+#context .breadcrumb {
+  float: left;
+  margin-bottom: 10px;
+}
+#context .util {
+  float: right;
+  margin-right: 20px;
+}
+
+.breadcrumb {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  position: relative;
+}
+.breadcrumb li {
+  float: left;
+  padding: 0 20px 0 0;
+  color: #000;
+  white-space: nowrap;
+}
+.breadcrumb li a {
+  color: #000;
+}
+.breadcrumb li:after {
+  content: url(../images/breadcrumb.png);
+  position: relative;
+  top: 1px;
+  left: 10px;
+  width: 5px;
+  height: 10px;
+}
+.breadcrumb li.current {
+  font-weight: 700;
+}
+.breadcrumb li.current:after {
+  display: none;
+}
+
+/* Sticky Nav overrides */
+.sticky-menu {
+  position: fixed;
+  width: 940px;
+  height: 0px;
+  z-index: 51;
+  top: 12px;
+}
+#sticky-header {
+  display: none;
+  padding: 0 10px;
+  position: fixed;
+  background: #f9f9f9;
+  top: 0px;
+  left: 0px;
+  right: 0px;
+  height: 45px;
+  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.1);
+  border-bottom: 1px solid #a5c43a;
+  z-index: 50;
+}
+#sticky-header.design {
+  border-bottom: 1px solid #33b5e5;
+}
+#sticky-header.develop {
+  border-bottom: 1px solid #F80;
+}
+#sticky-header.distribute {
+  border-bottom: 1px solid #9C0;
+}
+#sticky-header.about {
+  border-bottom: 1px solid #9933CC;
+}
+#sticky-header > div {
+  overflow: hidden;
+  *zoom: 1;
+  width: 940px;
+  margin: 0 auto;
+  clear: both;
+  padding-top: 9px;
+}
+#sticky-header > div .logo {
+  float: left;
+  width: 26px;
+  height: 25px;
+  background: url(../images/dac_logo.png);
+  z-index: 52;
+  position: relative;
+}
+#sticky-header > div .top {
+  float: left;
+  width: 38px;
+  height: 38px;
+  position: relative;
+  background: url(../images/styles/gototop.png);
+  z-index: 52;
+}
+#sticky-header > div .breadcrumb {
+  float: left;
+  padding: 0 0 0 10px;
+  border-left: 1px solid #d2d2d2;
+  line-height: 24px;
+  font-size: 14px;
+  position: relative;
+  top: 0px;
+  z-index: 52;
 }
 
 
-
-
-
-
+}
 
 
 
@@ -4014,7 +4156,6 @@
 }
 
 .logo a {
-  width:123px;
   float:left;
 }
 
@@ -4027,11 +4168,13 @@
 }
 
 
-#header .logo-wear {
+#header-wrap .logo.wear-logo {
   width:220px;
   margin:0;
+  padding:0;
+  margin-bottom:22px;
 }
-#header .logo-wear img {
+#header-wrap .logo.wear-logo img {
   padding:0 0 0 10px;
 }
 
@@ -4458,11 +4601,11 @@
 }
 
 #nav-x {
-  padding-top: 14px;
+  padding-top: 13px;
 }
 
 #nav-x .wrap {
-  min-height:34px;
+  min-height:32px;
 }
 
 #nav-x .wrap,
@@ -4804,53 +4947,6 @@
 
 
 
-/************ DISTRIBUTE HOMEPAGE ***************/
-
-.marquee {
-  width: 760px;
-}
-.marquee .main-img {
-  float: left;
-  margin-top: 20px;
-  width: 490px;
-}
-.marquee .copy {
-  width: 270px;
-  float: left;
-  margin-top: 30px;
-}
-.distribute-features {
-  margin: 0;
-}
-.distribute-features ul {
-  margin: 0;
-}
-.distribute-features ul li {
-  list-style: none;
-  float: left;
-  border-top: 1px solid #9C0;
-  width: 220px;
-  margin-right: 50px;
-}
-.distribute-features ul li.last {
-  margin-right: 0px;
-}
-
-.distribute-features .distribute-link li a {
-  color:red !important;
-}
-
-.distribute-features .distribute-link li a,
-.distribute-features .distribute-link li a:active {
-  color:#555 !important;
-}
-
-.distribute-features .distribute-link li a:hover,
-.distribute-features .distribute-link li a:hover * {
-  color:#7AA1B0 !important;
-}
-
-
 /************ DEVELOP TOPIC CONTAINERS ************/
 
 .landing-banner,
@@ -5028,3 +5124,1263 @@
 .fullpage #footer {
   margin-top: -40px;
 }
+
+/************ DISTRIBUTE PAGES ******************/
+
+/* Article page header line fix */
+.headerLine {
+  overflow: hidden;
+}
+.headerLine h1 {
+  float: left;
+  padding-right: 20px;
+  margin-bottom: 0px;
+  font-size: 20px;
+  color: #363636;
+}
+.headerLine hr {
+  overflow: hidden;
+  margin: 42px 0 0 0;
+}
+
+.article-detail #body-content {
+  padding-top: 10px;
+}
+
+/* A container for grid sets with uppercase h3 and rule */
+.dynamic-grid h3 {
+  font-size:14px;
+  line-height:21px;
+  color:#555;
+  text-transform:uppercase;
+  border-bottom:1px solid #CCC;
+  padding:8px 0 0 1px;
+  margin-bottom:10px;
+  clear:both;
+}
+
+.top-right-float {
+  float: right;
+}
+
+.clearfloat {
+  float: none;
+  clear: both;
+}
+
+.border-img {
+  border: 1px solid #CCC;
+}
+
+.center-img {
+  margin: auto;
+  text-align: center;
+}
+.center-img img {
+  margin-bottom: 15px;
+}
+
+.figure img, .border-img {
+  margin-bottom: 15px;
+}
+
+/************ RESOURCE CARDS ******************/
+
+/* Resource cards, 12, 13, 16-col */
+
+/* Basic card-styling with shadow */
+.resource-card {
+  border-radius: 1px;
+  box-shadow: 1px 2px 5px rgba(0, 0, 0, 0.12);
+  background: #fefefe;
+}
+
+/* Styling for background image including tinting and section icons in stacks */
+.card-bg {
+  display: block;
+  position: absolute;
+  vertical-align: top;
+  width: 100%;
+  left: 0;
+  top: 0;
+  background-size: cover;
+  background-repeat: no-repeat;
+  background-position: center;
+  background-image: url(../images/resource-card-default-android.jpg);
+}
+.card-bg:after {
+  content: "";
+  display: block;
+  height: 100%;
+  width: 100%;
+  opacity: 1;
+  background: rgba(0, 0, 0, 0.2);
+  -webkit-transition: opacity 0.5s;
+  -moz-transition: opacity 0.5s;
+  -o-transition: opacity 0.5s;
+  transition: opacity 0.5s;
+}
+.card-bg .card-section-icon {
+  position: absolute;
+  top: 50%;
+  width: 100%;
+  margin-top: -35px;
+  text-align: center;
+  padding-top: 65px;
+  z-index: 100;
+}
+.card-bg .card-section-icon .icon {
+  position: absolute;
+  left: 50%;
+  margin-left: -28px;
+  top: 0px;
+  width: 56px;
+  height: 56px;
+  background-repeat: no-repeat;
+  background-position: 50% 50%;
+  background-image: url(../images/stack-icon.png);
+}
+.card-bg .card-section-icon .section {
+  text-transform: uppercase;
+  color: white;
+  font-size: 14px;
+}
+
+.card-info {
+  position: absolute;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  overflow: hidden;
+  background: #fefefe;
+  padding: 4px 12px 6px 12px;
+}
+.card-info .section {
+  text-transform: uppercase;
+  color: #898989;
+  font-size: 12px;
+  margin-bottom: 1px;
+}
+.card-info .title {
+  color: #363636;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  padding-bottom: 5px;
+  margin-bottom: -2px;
+  font-size: 16px;
+}
+.card-info .description {
+  overflow: hidden;
+}
+.card-info .description .text {
+  color: #464646;
+  font: 13px/15px Roboto Condensed;
+  overflow: hidden;
+  width:100%;
+}
+.card-info .description .util {
+  position: absolute;
+  right: 5px;
+  bottom: 70px; /*-2px;*/
+  opacity: 0;
+  -webkit-transition: opacity 0.5s;
+  -moz-transition: opacity 0.5s;
+  -o-transition: opacity 0.5s;
+  transition: opacity 0.5s;
+}
+.card-info.empty-desc .title {
+  white-space: normal;
+  overflow: visible;
+}
+.card-info.empty-desc .description {
+  display: none;
+}
+/* Truncate card summaries at bounding box and
+ * and apply ellipsis at lower right */
+.ellipsis {
+  overflow: hidden;
+  float:right;
+  line-height: 15px;
+  width:100%;
+}
+.resource-card-6x6 .card-info .description .teddddddxt {
+ float:left;
+  position:relative;
+  margin-left:0;
+}
+.ellipsis:before {
+  content:"";
+  float: left;
+  width: 5px;
+  height:100%;
+}
+.ellipsis > *:first-child.text {
+  float: right;
+  width: 100%  !important;
+  margin-left: -5px;
+}
+.ellipsis:after {
+  content: "\02026";
+  height:17px;
+  padding-bottom:4px;
+
+  box-sizing: content-box;
+  -webkit-box-sizing: content-box;
+  -moz-box-sizing: content-box;
+
+  float: right; position: relative;
+  top: -16px; left: 100%;
+  width: 4em; margin-left: -4em;
+  padding-right: 5px;
+
+  background: -webkit-gradient(linear, left top, right top,
+    from(rgba(255, 255, 255, 0)), to(white), color-stop(65%, white));
+  background: -moz-linear-gradient(to right, rgba(255, 255, 255, 0), white 65%, white);
+  background: -o-linear-gradient(to right, rgba(255, 255, 255, 0), white 65%, white);
+  background: -ms-linear-gradient(to right, rgba(255, 255, 255, 0), white 65%, white);
+  background: linear-gradient(to right, rgba(255, 255, 255, 0), white 65%, white);
+}
+.ellipsis:after {
+  font-style: normal; color: #aaa;
+  font-size:13px;
+  text-align: right;
+}
+
+/* Flow Layout */
+.resource-flow-layout {
+  display: inline-block;
+}
+.resource-flow-layout .resource-card, .resource-flow-layout .resource-card-stack {
+  float: left;
+  position: relative;
+}
+.resource-flow-layout .resource-card-stack > .resource-card {
+  margin-right: 0px !important;
+}
+.resource-flow-layout:after {
+  content: ".";
+  display: block;
+  height: 0;
+  clear: both;
+  visibility: hidden;
+}
+
+.resource-card:hover {
+  cursor: pointer;
+}
+.resource-card:hover .card-bg:after {
+  opacity: 0;
+}
+/* disabled to make way for fade/ellipsis truncation,
+   and the plusone moves up. 
+.resource-card:hover .card-info .description .text {
+  padding-right: 70px;
+} */
+.resource-card:hover .card-info .description .util {
+  opacity: 1;
+}
+
+/* Carousel Layout */
+/* Carousel styles for landing page */
+.resource-carousel-layout {
+  margin: 20px 0 20px 0;
+  position: relative;
+  overflow: hidden;
+}
+.resource-carousel-layout .slideshow-prev, .resource-carousel-layout .slideshow-next {
+  display: none;
+}
+.resource-carousel-layout .pagination {
+  bottom: 0px;
+}
+.resource-carousel-layout .frame li {
+  position: relative;
+}
+.resource-carousel-layout .frame li .card-bg {
+  height: 300px;
+}
+.resource-carousel-layout .frame li .card-info {
+  padding: 7px 15px 0px 15px;
+  top: 300px;
+}
+.resource-carousel-layout .frame li .card-info .section {
+  font-size: 13px;
+  margin-bottom: 7px;
+}
+.resource-carousel-layout .frame li .card-info .title {
+  font-size: 25px;
+  margin-bottom: 2px;
+}
+.resource-carousel-layout .frame li .card-info .description {
+  font-family: 15px/16px Roboto Condensed, sans-serif;
+}
+.resource-carousel-layout .frame li .card-info .description .text {
+  height: 40px;
+}
+.resource-carousel-layout .frame li .card-info .description .util {
+  bottom:97px;
+  right:4px;
+}
+
+/* Stack Layout */
+.resource-stack-layout {
+  display: inline-block;
+}
+.resource-stack-layout .resource-card-stack {
+  float: left;
+  position: relative;
+}
+.resource-stack-layout .resource-card {
+  margin-bottom: 20px;
+  display: block;
+  position: relative;
+}
+.resource-stack-layout .section-card-menu > .card-info .section, .resource-stack-layout .section-card > .card-info .title {
+  /*text-transform: uppercase;*/
+  color: #898989;
+  font-size: 17px;
+  line-height: 24px;
+  margin-bottom: 6px;
+}
+.resource-stack-layout .section-card {
+  height: 284px;
+}
+.resource-stack-layout .section-card > .card-bg {
+  height: 192px;
+}
+.resource-stack-layout .section-card > .card-info {
+  padding: 4px 12px 6px 12px;
+  top: 192px;
+}
+.resource-stack-layout .section-card > .card-info .section {
+  display: none;
+}
+.resource-stack-layout .section-card > .card-info .title {
+  font-size: 17px;
+  border-bottom: 1px solid #959595;
+  padding-bottom: 0px;
+}
+.resource-stack-layout .section-card > .card-info .description {
+  font-size: 13px;
+  line-height: 15px;
+}
+.resource-stack-layout .section-card > .card-info .description .text {
+  height: 30px;
+}
+.resource-stack-layout .related-card {
+  height: 90px;
+}
+.resource-stack-layout .related-card > .card-bg {
+  left: 0;
+  top: 0;
+  width: 90px;
+  height: 100%;
+  position: absolute;
+  display: block;
+}
+.resource-stack-layout .related-card > .card-info {
+  left: 90px;
+  padding: 4px 12px 4px 12px;
+}
+.resource-stack-layout .related-card > .card-info .section {
+  font-size: 12px;
+  margin-bottom: 1px;
+  display: none;
+}
+.resource-stack-layout .related-card > .card-info .title {
+  font-size: 16px;
+  margin-bottom: -2px;
+  white-space: normal;
+  overflow: visible;
+  text-overflow: ellipsis;
+}
+.resource-stack-layout .related-card > .card-info .title:after {
+  content: url(../images/link-out.png);
+  display: block;
+}
+.resource-stack-layout .related-card > .card-info .description {
+  display: none;
+}
+.resource-stack-layout .section-card-menu {
+  /* Flexible height */
+  display: block;
+  height: auto;
+  width: auto;
+}
+.resource-stack-layout .section-card-menu .card-bg {
+  height: 155px;
+  /* Flexible height */
+  position: relative;
+  display: inline-block;
+  vertical-align: top;
+}
+.resource-stack-layout .section-card-menu .card-info {
+  padding: 4px 12px 0px 12px;
+  /* Flexible height */
+  position: relative;
+  left: auto;
+  top: auto;
+  right: auto;
+  bottom: auto;
+}
+.resource-stack-layout .section-card-menu .card-info ul {
+  list-style: none;
+  margin: 0;
+}
+.resource-stack-layout .section-card-menu .card-info ul li {
+  list-style: none;
+  margin: 0;
+  padding: 15px 0;
+  border-top-width: 1px;
+  border-top-style: solid;
+  border-top-color: #959595;
+}
+.resource-stack-layout .section-card-menu .card-info ul li a, .resource-stack-layout .section-card-menu .card-info ul li a:focus, .resource-stack-layout .section-card-menu .card-info ul li a:link, .resource-stack-layout .section-card-menu .card-info ul li a:visited, .resource-stack-layout .section-card-menu .card-info ul li a:active, .resource-stack-layout .section-card-menu .card-info ul li a:hover {
+  color: #363636 !important;
+}
+.resource-stack-layout .section-card-menu .card-info ul li:first-child {
+  border-top: none;
+}
+.resource-stack-layout .section-card-menu .card-info ul li:hover .title:after {
+  opacity: 1;
+  -webkit-transition: opacity 0.5s;
+  -moz-transition: opacity 0.5s;
+  -o-transition: opacity 0.5s;
+  transition: opacity 0.5s;
+}
+.resource-stack-layout .section-card-menu .card-info ul li:hover .description {
+  max-height: 30px;
+  opacity: 1;
+  -webkit-transition: max-height 0.5s, opacity 1s;
+  -moz-transition: max-height 0.5s, opacity 1s;
+  -o-transition: max-height 0.5s, opacity 1s;
+  transition: max-height 0.5s, opacity 1s;
+}
+.resource-stack-layout .section-card-menu .card-info .title {
+  font-size: 16px;
+  margin-bottom: -2px;
+  position: relative;
+}
+.resource-stack-layout .section-card-menu .card-info .title:after {
+  background: url(../images/stack-arrow-right.png);
+  content: '';
+  opacity: 0;
+  -webkit-transition: opacity 0.25s;
+  -moz-transition: opacity 0.25s;
+  -o-transition: opacity 0.25s;
+  transition: opacity 0.25s;
+  position: absolute;
+  right: 0px;
+  top: 3px;
+  width: 10px;
+  height: 15px;
+}
+.resource-stack-layout .section-card-menu .card-info .title.more {
+  text-transform: uppercase;
+  color: #898989;
+  display: inline-block;
+}
+.resource-stack-layout .section-card-menu .card-info .title.more:after {
+  background: url(../images/stack-arrow-right.png);
+  content: '';
+  display: block;
+  position: absolute;
+  right: -20px;
+  top: 3px;
+  width: 10px;
+  height: 15px;
+}
+.resource-stack-layout .section-card-menu .card-info .description {
+  max-height: 0px;
+  opacity: 0;
+  overflow: hidden;
+  font-size: 13px;
+  line-height: 15px;
+  /* Hover off */
+  -webkit-transition: max-height 0.5s, opacity 0.5s;
+  -moz-transition: max-height 0.5s, opacity 0.5s;
+  -o-transition: max-height 0.5s, opacity 0.5s;
+  transition: max-height 0.5s, opacity 0.5s;
+}
+.resource-stack-layout .section-card-menu .card-info .description .text {
+  height: 30px;
+}
+.resource-stack-layout:after {
+  content: ".";
+  display: block;
+  height: 0;
+  clear: both;
+  visibility: hidden;
+}
+
+/* Generate the flow layout styles for a 3-column 16-col span */
+.resource-flow-layout.col-16 {
+  margin: 0 -14px 0 0;
+  width: 954px;
+}
+.resource-flow-layout.col-16 .resource-card, .resource-flow-layout.col-16 .resource-card-stack {
+  margin: 0 14px 20px 0;
+}
+.resource-flow-layout.col-16 .resource-card-row-stack-last {
+  margin-bottom: 0px !important;
+}
+.resource-flow-layout.col-16 .resource-card-col-stack-last {
+  margin-bottom: 0px !important;
+}
+.resource-flow-layout.col-16 .resource-card-3x6 {
+  width: 145px;
+  height: 284px;
+}
+.resource-flow-layout.col-16 .resource-card-3x12 {
+  width: 145px;
+  height: 588px;
+}
+.resource-flow-layout.col-16 .resource-card-3x18 {
+  width: 145px;
+  height: 892px;
+}
+.resource-flow-layout.col-16 .resource-card-6x6 {
+  width: 304px;
+  height: 284px;
+}
+.resource-flow-layout.col-16 .resource-card-6x12 {
+  width: 304px;
+  height: 588px;
+}
+.resource-flow-layout.col-16 .resource-card-6x18 {
+  width: 304px;
+  height: 892px;
+}
+.resource-flow-layout.col-16 .resource-card-9x6 {
+  width: 463px;
+  height: 284px;
+}
+.resource-flow-layout.col-16 .resource-card-9x12 {
+  width: 463px;
+  height: 588px;
+}
+.resource-flow-layout.col-16 .resource-card-9x18 {
+  width: 463px;
+  height: 892px;
+}
+.resource-flow-layout.col-16 .resource-card-12x6 {
+  width: 622px;
+  height: 284px;
+}
+.resource-flow-layout.col-16 .resource-card-12x12 {
+  width: 622px;
+  height: 588px;
+}
+.resource-flow-layout.col-16 .resource-card-12x18 {
+  width: 622px;
+  height: 892px;
+}
+.resource-flow-layout.col-16 .resource-card-15x6 {
+  width: 781px;
+  height: 284px;
+}
+.resource-flow-layout.col-16 .resource-card-15x12 {
+  width: 781px;
+  height: 588px;
+}
+.resource-flow-layout.col-16 .resource-card-15x18 {
+  width: 781px;
+  height: 892px;
+}
+.resource-flow-layout.col-16 .resource-card-18x6 {
+  width: 940px;
+  height: 284px;
+}
+.resource-flow-layout.col-16 .resource-card-18x12 {
+  width: 940px;
+  height: 420px;
+}
+.resource-flow-layout.col-16 .resource-card-18x18 {
+  width: 940px;
+  height: 892px;
+}
+.resource-flow-layout.col-16 .resource-card-3x2 {
+  width: 145px;
+  height: 95px;
+}
+.resource-flow-layout.col-16 .resource-card-3x2x3 {
+  width: 145px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-16 .resource-card-3x3 {
+  width: 145px;
+  height: 142px;
+}
+.resource-flow-layout.col-16 .resource-card-3x3x2 {
+  width: 145px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-16 .resource-card-6x2 {
+  width: 304px;
+  height: 95px;
+}
+.resource-flow-layout.col-16 .resource-card-6x2x3 {
+  width: 304px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-16 .resource-card-6x3 {
+  width: 304px;
+  height: 142px;
+}
+.resource-flow-layout.col-16 .resource-card-6x3x2 {
+  width: 304px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-16 .resource-card-9x2 {
+  width: 463px;
+  height: 95px;
+}
+.resource-flow-layout.col-16 .resource-card-9x2x3 {
+  width: 463px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-16 .resource-card-9x3 {
+  width: 463px;
+  height: 142px;
+}
+.resource-flow-layout.col-16 .resource-card-9x3x2 {
+  width: 463px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-16 .resource-card-12x2 {
+  width: 622px;
+  height: 95px;
+}
+.resource-flow-layout.col-16 .resource-card-12x2x3 {
+  width: 622px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-16 .resource-card-12x3 {
+  width: 622px;
+  height: 142px;
+}
+.resource-flow-layout.col-16 .resource-card-12x3x2 {
+  width: 622px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-16 .resource-card-15x2 {
+  width: 781px;
+  height: 95px;
+}
+.resource-flow-layout.col-16 .resource-card-15x2x3 {
+  width: 781px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-16 .resource-card-15x3 {
+  width: 781px;
+  height: 142px;
+}
+.resource-flow-layout.col-16 .resource-card-15x3x2 {
+  width: 781px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-16 .resource-card-18x2 {
+  width: 940px;
+  height: 95px;
+}
+.resource-flow-layout.col-16 .resource-card-18x2x3 {
+  width: 940px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-16 .resource-card-18x3 {
+  width: 940px;
+  height: 142px;
+}
+.resource-flow-layout.col-16 .resource-card-18x3x2 {
+  width: 940px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+
+/* Generate the flow layout styles for a 3-column 16-col span */
+.resource-flow-layout.col-12 {
+  margin: 0 -14px 0 0;
+  width: 714px;
+}
+
+.resource-flow-layout.col-12 .resource-card, .resource-flow-layout.col-12 .resource-card-stack {
+  margin: 0 14px 20px 0;
+}
+.resource-flow-layout.col-12 .resource-card-row-stack-last {
+  margin-bottom: 0px !important;
+}
+.resource-flow-layout.col-12 .resource-card-col-stack-last {
+  margin-bottom: 0px !important;
+}
+.resource-flow-layout.col-12 .resource-card-3x6 {
+  width: 105px;
+  height: 284px;
+}
+.resource-flow-layout.col-12 .resource-card-3x12 {
+  width: 105px;
+  height: 588px;
+}
+.resource-flow-layout.col-12 .resource-card-3x18 {
+  width: 105px;
+  height: 892px;
+}
+.resource-flow-layout.col-12 .resource-card-6x6 {
+  width: 224px;
+  height: 284px;
+}
+.resource-flow-layout.col-12 .resource-card-6x12 {
+  width: 224px;
+  height: 588px;
+}
+.resource-flow-layout.col-12 .resource-card-6x18 {
+  width: 224px;
+  height: 892px;
+}
+.resource-flow-layout.col-12 .resource-card-9x6 {
+  width: 343px;
+  height: 284px;
+}
+.resource-flow-layout.col-12 .resource-card-9x12 {
+  width: 343px;
+  height: 588px;
+}
+.resource-flow-layout.col-12 .resource-card-9x18 {
+  width: 343px;
+  height: 892px;
+}
+.resource-flow-layout.col-12 .resource-card-12x6 {
+  width: 462px;
+  height: 284px;
+}
+.resource-flow-layout.col-12 .resource-card-12x12 {
+  width: 462px;
+  height: 588px;
+}
+.resource-flow-layout.col-12 .resource-card-12x18 {
+  width: 462px;
+  height: 892px;
+}
+.resource-flow-layout.col-12 .resource-card-15x6 {
+  width: 581px;
+  height: 284px;
+}
+.resource-flow-layout.col-12 .resource-card-15x12 {
+  width: 581px;
+  height: 588px;
+}
+.resource-flow-layout.col-12 .resource-card-15x18 {
+  width: 581px;
+  height: 892px;
+}
+.resource-flow-layout.col-12 .resource-card-18x6 {
+  width: 700px;
+  height: 284px;
+}
+.resource-flow-layout.col-12 .resource-card-18x12 {
+  width: 700px;
+  height: 420px;
+}
+.resource-flow-layout.col-12 .resource-card-18x18 {
+  width: 700px;
+  height: 892px;
+}
+.resource-flow-layout.col-12 .resource-card-3x2 {
+  width: 105px;
+  height: 95px;
+}
+.resource-flow-layout.col-12 .resource-card-3x2x3 {
+  width: 105px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-12 .resource-card-3x3 {
+  width: 105px;
+  height: 142px;
+}
+.resource-flow-layout.col-12 .resource-card-3x3x2 {
+  width: 105px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-12 .resource-card-6x2 {
+  width: 224px;
+  height: 95px;
+}
+.resource-flow-layout.col-12 .resource-card-6x2x3 {
+  width: 224px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-12 .resource-card-6x3 {
+  width: 224px;
+  height: 142px;
+}
+.resource-flow-layout.col-12 .resource-card-6x3x2 {
+  width: 224px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-12 .resource-card-9x2 {
+  width: 343px;
+  height: 95px;
+}
+.resource-flow-layout.col-12 .resource-card-9x2x3 {
+  width: 343px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-12 .resource-card-9x3 {
+  width: 343px;
+  height: 142px;
+}
+.resource-flow-layout.col-12 .resource-card-9x3x2 {
+  width: 343px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-12 .resource-card-12x2 {
+  width: 462px;
+  height: 95px;
+}
+.resource-flow-layout.col-12 .resource-card-12x2x3 {
+  width: 462px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-12 .resource-card-12x3 {
+  width: 462px;
+  height: 142px;
+}
+.resource-flow-layout.col-12 .resource-card-12x3x2 {
+  width: 462px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-12 .resource-card-15x2 {
+  width: 581px;
+  height: 95px;
+}
+.resource-flow-layout.col-12 .resource-card-15x2x3 {
+  width: 581px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-12 .resource-card-15x3 {
+  width: 581px;
+  height: 142px;
+}
+.resource-flow-layout.col-12 .resource-card-15x3x2 {
+  width: 581px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-12 .resource-card-18x2 {
+  width: 700px;
+  height: 95px;
+}
+.resource-flow-layout.col-12 .resource-card-18x2x3 {
+  width: 700px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-12 .resource-card-18x3 {
+  width: 700px;
+  height: 142px;
+}
+.resource-flow-layout.col-12 .resource-card-18x3x2 {
+  width: 700px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+
+/* Generate the flow layout styles for a 3-column 13-col span */
+
+.resource-flow-layout.col-13 {
+  margin: 0 -14px 0 0;
+  width: 774px;
+}
+.resource-flow-layout.col-13 .resource-card, .resource-flow-layout.col-13 .resource-card-stack {
+  margin: 0 14px 20px 0;
+}
+.resource-flow-layout.col-13 .resource-card-row-stack-last {
+  margin-bottom: 0px !important;
+}
+.resource-flow-layout.col-13 .resource-card-col-stack-last {
+  margin-bottom: 0px !important;
+}
+.resource-flow-layout.col-13 .resource-card-3x6 {
+  width: 115px;
+  height: 284px;
+}
+.resource-flow-layout.col-13 .resource-card-3x12 {
+  width: 115px;
+  height: 588px;
+}
+.resource-flow-layout.col-13 .resource-card-3x18 {
+  width: 115px;
+  height: 892px;
+}
+.resource-flow-layout.col-13 .resource-card-6x6 {
+  width: 244px;
+  height: 284px;
+}
+.resource-flow-layout.col-13 .resource-card-6x12 {
+  width: 244px;
+  height: 588px;
+}
+.resource-flow-layout.col-13 .resource-card-6x18 {
+  width: 244px;
+  height: 892px;
+}
+.resource-flow-layout.col-13 .resource-card-9x6 {
+  width: 373px;
+  height: 284px;
+}
+.resource-flow-layout.col-13 .resource-card-9x12 {
+  width: 373px;
+  height: 588px;
+}
+.resource-flow-layout.col-13 .resource-card-9x18 {
+  width: 373px;
+  height: 892px;
+}
+.resource-flow-layout.col-13 .resource-card-12x6 {
+  width: 502px;
+  height: 284px;
+}
+.resource-flow-layout.col-13 .resource-card-12x12 {
+  width: 502px;
+  height: 588px;
+}
+.resource-flow-layout.col-13 .resource-card-12x18 {
+  width: 502px;
+  height: 892px;
+}
+.resource-flow-layout.col-13 .resource-card-15x6 {
+  width: 631px;
+  height: 284px;
+}
+.resource-flow-layout.col-13 .resource-card-15x12 {
+  width: 631px;
+  height: 588px;
+}
+.resource-flow-layout.col-13 .resource-card-15x18 {
+  width: 631px;
+  height: 892px;
+}
+.resource-flow-layout.col-13 .resource-card-18x6 {
+  width: 760px;
+  height: 284px;
+}
+.resource-flow-layout.col-13 .resource-card-18x12 {
+  width: 760px;
+  height: 420px;
+}
+.resource-flow-layout.col-13 .resource-card-18x18 {
+  width: 760px;
+  height: 892px;
+}
+.resource-flow-layout.col-13 .resource-card-3x2 {
+  width: 115px;
+  height: 95px;
+}
+.resource-flow-layout.col-13 .resource-card-3x2x3 {
+  width: 115px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-13 .resource-card-3x3 {
+  width: 115px;
+  height: 142px;
+}
+.resource-flow-layout.col-13 .resource-card-3x3x2 {
+  width: 115px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-13 .resource-card-6x2 {
+  width: 244px;
+  height: 95px;
+}
+.resource-flow-layout.col-13 .resource-card-6x2x3 {
+  width: 244px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-13 .resource-card-6x3 {
+  width: 244px;
+  height: 142px;
+}
+.resource-flow-layout.col-13 .resource-card-6x3x2 {
+  width: 244px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-13 .resource-card-9x2 {
+  width: 373px;
+  height: 95px;
+}
+.resource-flow-layout.col-13 .resource-card-9x2x3 {
+  width: 373px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-13 .resource-card-9x3 {
+  width: 373px;
+  height: 142px;
+}
+.resource-flow-layout.col-13 .resource-card-9x3x2 {
+  width: 373px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-13 .resource-card-12x2 {
+  width: 502px;
+  height: 95px;
+}
+.resource-flow-layout.col-13 .resource-card-12x2x3 {
+  width: 502px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-13 .resource-card-12x3 {
+  width: 502px;
+  height: 142px;
+}
+.resource-flow-layout.col-13 .resource-card-12x3x2 {
+  width: 502px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-13 .resource-card-15x2 {
+  width: 631px;
+  height: 95px;
+}
+.resource-flow-layout.col-13 .resource-card-15x2x3 {
+  width: 631px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-13 .resource-card-15x3 {
+  width: 631px;
+  height: 142px;
+}
+.resource-flow-layout.col-13 .resource-card-15x3x2 {
+  width: 631px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+.resource-flow-layout.col-13 .resource-card-18x2 {
+  width: 760px;
+  height: 95px;
+}
+.resource-flow-layout.col-13 .resource-card-18x2x3 {
+  width: 760px;
+  height: 90px;
+  margin-bottom: 7px;
+}
+.resource-flow-layout.col-13 .resource-card-18x3 {
+  width: 760px;
+  height: 142px;
+}
+.resource-flow-layout.col-13 .resource-card-18x3x2 {
+  width: 760px;
+  height: 138px;
+  margin-bottom: 8px;
+}
+
+/*
+  The following are styles for cards in the flowlayout above, styled by the number of rows they span
+*/
+/* Single row items, might be simpler to just apply a class */
+.resource-card-3x6 > .card-bg, .resource-card-6x6 > .card-bg, .resource-card-9x6 > .card-bg, .resource-card-12x6 > .card-bg, .resource-card-15x6 > .card-bg, .resource-card-18x6 > .card-bg {
+  height: 192px;
+}
+.resource-card-3x6 > .card-info, .resource-card-6x6 > .card-info, .resource-card-9x6 > .card-info, .resource-card-12x6 > .card-info, .resource-card-15x6 > .card-info, .resource-card-18x6 > .card-info {
+  padding: 4px 12px 6px 12px;
+  top: 192px;
+}
+.resource-card-3x6 > .card-info .section, .resource-card-6x6 > .card-info .section, .resource-card-9x6 > .card-info .section, .resource-card-12x6 > .card-info .section, .resource-card-15x6 > .card-info .section, .resource-card-18x6 > .card-info .section {
+  font-size: 12px;
+  margin-bottom: 1px;
+}
+.resource-card-3x6 > .card-info .title, .resource-card-6x6 > .card-info .title, .resource-card-9x6 > .card-info .title, .resource-card-12x6 > .card-info .title, .resource-card-15x6 > .card-info .title, .resource-card-18x6 > .card-info .title {
+  font-size: 16px;
+  margin-bottom: -2px;
+}
+.resource-card-3x6 > .card-info .description, .resource-card-6x6 > .card-info .description, .resource-card-9x6 > .card-info .description, .resource-card-12x6 > .card-info .description, .resource-card-15x6 > .card-info .description, .resource-card-18x6 > .card-info .description {
+  font-size: 13px;
+  line-height: 15px;
+}
+.resource-card-3x6 > .card-info .description .text, .resource-card-6x6 > .card-info .description .text, .resource-card-9x6 > .card-info .description .text, .resource-card-12x6 > .card-info .description .text, .resource-card-15x6 > .card-info .description .text, .resource-card-18x6 > .card-info .description .text {
+  height: 30px;
+}
+
+/* Double row items */
+.resource-card-3x12 > .card-bg, .resource-card-6x12 > .card-bg, .resource-card-9x12 > .card-bg, .resource-card-12x12 > .card-bg, .resource-card-15x12 > .card-bg, .resource-card-18x12 > .card-bg {
+  height: 320px;
+}
+.resource-card-3x12 > .card-info, .resource-card-6x12 > .card-info, .resource-card-9x12 > .card-info, .resource-card-12x12 > .card-info, .resource-card-15x12 > .card-info, .resource-card-18x12 > .card-info {
+  padding: 4px 12px 6px 12px;
+  top: 320px;
+}
+.resource-card-3x12 > .card-info .section, .resource-card-6x12 > .card-info .section, .resource-card-9x12 > .card-info .section, .resource-card-12x12 > .card-info .section, .resource-card-15x12 > .card-info .section, .resource-card-18x12 > .card-info .section {
+  font-size: 12px;
+  margin-bottom: 1px;
+}
+.resource-card-3x12 > .card-info .title, .resource-card-6x12 > .card-info .title, .resource-card-9x12 > .card-info .title, .resource-card-12x12 > .card-info .title, .resource-card-15x12 > .card-info .title, .resource-card-18x12 > .card-info .title {
+  font-size: 16px;
+  margin-bottom: -2px;
+  white-space: normal;
+}
+.resource-card-3x12 > .card-info .description, .resource-card-6x12 > .card-info .description, .resource-card-9x12 > .card-info .description, .resource-card-12x12 > .card-info .description, .resource-card-15x12 > .card-info .description, .resource-card-18x12 > .card-info .description {
+  font-size: 13px;
+  line-height: 15px;
+}
+
+/* 1/3 row items */
+.resource-card-3x2 > .card-bg, .resource-card-6x2 > .card-bg, .resource-card-9x2 > .card-bg, .resource-card-12x2 > .card-bg, .resource-card-15x2 > .card-bg, .resource-card-18x2 > .card-bg {
+  left: 0;
+  top: 0;
+  width: 90px;
+  height: 100%;
+  position: absolute;
+  display: block;
+}
+.resource-card-3x2 > .card-info, .resource-card-6x2 > .card-info, .resource-card-9x2 > .card-info, .resource-card-12x2 > .card-info, .resource-card-15x2 > .card-info, .resource-card-18x2 > .card-info {
+  left: 90px;
+  padding: 4px 12px 4px 12px;
+  height: 80px;
+  overflow: hidden;
+}
+.resource-card-3x2 > .card-info .section, .resource-card-6x2 > .card-info .section, .resource-card-6x3 > .card-info .section, .resource-card-9x2 > .card-info .section, .resource-card-12x2 > .card-info .section, .resource-card-15x2 > .card-info .section, .resource-card-18x2 > .card-info .section {
+  font-size: 12px;
+  margin-bottom: 1px;
+  /* display: none; */
+}
+.resource-card-3x2 > .card-info .title, .resource-card-6x2 > .card-info .title, .resource-card-9x2 > .card-info .title, .resource-card-12x2 > .card-info .title, .resource-card-15x2 > .card-info .title, .resource-card-18x2 > .card-info .title {
+  font-size: 16px;
+  margin-bottom: -2px;
+  white-space: normal;
+  overflow: visible;
+  text-overflow: ellipsis;
+}
+.resource-card-3x2 > .card-info .title:after, .resource-card-6x2 > .card-info .title:after, .resource-card-9x2 > .card-info .title:after, .resource-card-12x2 > .card-info .title:after, .resource-card-15x2 > .card-info .title:after, .resource-card-18x2 > .card-info .title:after {
+  /* content: url(../images/link-out.png); */
+  display: block;
+}
+.resource-card-3x2 > .card-info .description, .resource-card-6x2 > .card-info .description, .resource-card-9x2 > .card-info .description, .resource-card-12x2 > .card-info .description, .resource-card-15x2 > .card-info .description, .resource-card-18x2 > .card-info .description {
+  display: none;
+}
+
+/* 1/2 row items */
+.resource-card-3x3 > .card-bg, .resource-card-6x3 > .card-bg, .resource-card-9x3 > .card-bg, .resource-card-12x3 > .card-bg, .resource-card-15x3 > .card-bg, .resource-card-18x3 > .card-bg {
+  left: 0;
+  top: 0;
+  width: 90px;
+  height: 100%;
+  position: absolute;
+  display: block;
+}
+.resource-card-3x3 > .card-info, .resource-card-6x3 > .card-info, .resource-card-9x3 > .card-info, .resource-card-12x3 > .card-info, .resource-card-15x3 > .card-info, .resource-card-18x3 > .card-info {
+  left: 90px;
+  padding: 4px 12px 0px 12px;
+}
+.resource-card-3x3 > .card-info .section, .resource-card-6x3 > .card-info .section, .resource-card-9x3 > .card-info .section, .resource-card-12x3 > .card-info .section, .resource-card-15x3 > .card-info .section, .resource-card-18x3 > .card-info .section {
+  font-size: 12px;
+  margin-bottom: 1px;
+  display: none;
+}
+.resource-card-3x3 > .card-info .title, .resource-card-6x3 > .card-info .title, .resource-card-9x3 > .card-info .title, .resource-card-12x3 > .card-info .title, .resource-card-15x3 > .card-info .title, .resource-card-18x3 > .card-info .title {
+  font-size: 16px;
+  margin-bottom: -2px;
+  white-space: normal;
+  overflow: visible;
+}
+.resource-card-3x3 > .card-info .description .text, .resource-card-6x3 > .card-info .description .text, .resource-card-9x3 > .card-info .description .text, .resource-card-12x3 > .card-info .description .text, .resource-card-15x3 > .card-info .description .text, .resource-card-18x3 > .card-info .description .text {
+  font-size: 12px;
+  line-height: 15px;
+  padding-right: 0px !important;
+  height: 80px;
+}
+.resource-card-3x3 > .card-info .description .util, .resource-card-6x3 > .card-info .description .util, .resource-card-9x3 > .card-info .description .util, .resource-card-12x3 > .card-info .description .util, .resource-card-15x3 > .card-info .description .util, .resource-card-18x3 > .card-info .description .util {
+  display: none;
+}
+/* placement of plusone */
+.resource-card-6x12 > .card-info .description .util, .resource-card-9x12 > .card-info .description .util, .resource-card-12x12 > .card-info .description .util, .resource-card-15x12 > .card-info .description .util {
+  bottom:2px;
+}
+.resource-card-18x12 > .card-info .description .util {
+  bottom:2px;
+}
+/* Overrides for col-16 6x6 cards linking to local content on landing pages.
+   Suppresses "section" and puts the title above a hairline rule. */
+.landing .card-info .section, .resource-flow-layout.col-16.landing .resource-card-9x6 .card-info .section {
+  display:none;
+}
+.landing  .card-info .title {
+  color: #898989;
+  font-size: 17px;
+  line-height: 24px;
+  margin-bottom: 6px;
+  border-bottom: 1px solid #959595;
+  padding-bottom: 0px;
+}
+.landing .card-info .description {
+  font-size: 13px;
+  line-height: 15px;
+}
+.landing .card-info .description .text {
+height:30px;
+}
+.landing .resource-card-6x6 > .card-info .description .util, .landing .resource-card-9x6 > .card-info .description .util {
+  bottom:2px;
+}
+/*
+  Generate a resource stack layout for a 3 column widget spanning 16 grid cols
+*/
+.resource-stack-layout.col-16 {
+  margin: 0 -14px 0 0;
+  width: 954px;
+}
+.resource-stack-layout.col-16 .resource-card-stack {
+  margin: 0 14px 0 0;
+  width: 304px;
+}
+
+/* Example of card menu tinting */
+.resource-widget[data-section=distribute\/tools] .section-card-menu
+.card-bg:after {
+  background: rgba(126, 55, 148, 0.4) !important;
+}
+.resource-widget[data-section=distribute\/tools] .section-card-menu
+.card-section-icon .icon {
+  background-color: #7e3794 !important;
+}
+.resource-widget[data-section=distribute\/tools] .section-card-menu
+.card-info ul li {
+  border-top-color: #7e3794 !important;
+}
+
+/* tinting for stacks */
+
+div.jd-descr > .resource-widget[data-section=distribute\/tools]
+.section-card-menu .card-info ul li {
+  border-top-color: #7e3794 !important;
+}
\ No newline at end of file
diff --git a/tools/droiddoc/templates-sdk/assets/css/fullscreen.css b/tools/droiddoc/templates-sdk/assets/css/fullscreen.css
index 71cf65b..7912e34 100644
--- a/tools/droiddoc/templates-sdk/assets/css/fullscreen.css
+++ b/tools/droiddoc/templates-sdk/assets/css/fullscreen.css
@@ -170,7 +170,7 @@
   max-width: 100%;
 }
 
-#nav-x .wrap,
+#header-wrapper #nav-x div.wrap,
 #searchResults.wrap {
     max-width:100%;
 }
@@ -184,9 +184,17 @@
   left:20px; /* !important ... for IE i think */
 }
 
+#sticky-header {
+  padding: 0 20px;
+}
 
+#sticky-header > div {
+  width: 100%;
+}
 
-
+.sticky-menu {
+  width:100%;
+  left:-20px;
 }
 
 .col-right {
diff --git a/tools/droiddoc/templates-sdk/assets/css/resourcecards.css b/tools/droiddoc/templates-sdk/assets/css/resourcecards.css
deleted file mode 100644
index 1222b04..0000000
--- a/tools/droiddoc/templates-sdk/assets/css/resourcecards.css
+++ /dev/null
@@ -1,371 +0,0 @@
-/* content layout */
-.resource-widget.resource-flow-layout {
-  display: inline-block;
-  margin-right: -20px;
-  /* clearfix idiom */ }
-  .resource-widget.resource-flow-layout.col-1 {
-    width: 60px; }
-  .resource-widget.resource-flow-layout.col-2 {
-    width: 120px; }
-  .resource-widget.resource-flow-layout.col-3 {
-    width: 180px; }
-  .resource-widget.resource-flow-layout.col-4 {
-    width: 240px; }
-  .resource-widget.resource-flow-layout.col-5 {
-    width: 300px; }
-  .resource-widget.resource-flow-layout.col-6 {
-    width: 360px; }
-  .resource-widget.resource-flow-layout.col-7 {
-    width: 420px; }
-  .resource-widget.resource-flow-layout.col-8 {
-    width: 480px; }
-  .resource-widget.resource-flow-layout.col-9 {
-    width: 540px; }
-  .resource-widget.resource-flow-layout.col-10 {
-    width: 600px; }
-  .resource-widget.resource-flow-layout.col-11 {
-    width: 660px; }
-  .resource-widget.resource-flow-layout.col-12 {
-    width: 720px; }
-  .resource-widget.resource-flow-layout.col-13 {
-    width: 780px; }
-  .resource-widget.resource-flow-layout.col-14 {
-    width: 840px; }
-  .resource-widget.resource-flow-layout.col-15 {
-    width: 900px; }
-  .resource-widget.resource-flow-layout.col-16 {
-    width: 960px; }
-  .resource-widget.resource-flow-layout:after {
-    content: ".";
-    display: block;
-    height: 0;
-    clear: both;
-    visibility: hidden; }
-  * html .resource-widget.resource-flow-layout {
-    height: 1px; }
-
-.resource-card {
-  /* stuff that applies to all cards */
-  display: -webkit-flex;
-  -webkit-transform: translateZ(0);
-  float: left;
-  position: relative;
-  margin-right: 20px;
-  margin-bottom: 20px;
-  background-color: #fff;
-  border-radius: 2px;
-  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
-  opacity: 0.8;
-  overflow: hidden;
-  transition: 0.4s box-shadow ease, 0.4s opacity ease;
-  /* card templates */
-  /* specific cards and customizations */ }
-  .resource-card .photo {
-    position: relative;
-    background-color: #eee;
-    background-size: cover;
-    background-repeat: no-repeat;
-    background-position: 50% 50%; }
-  .resource-card.nophoto .photo:after {
-    content: '';
-    display: block;
-    position: absolute;
-    left: 20px;
-    top: 20px;
-    right: 20px;
-    bottom: 20px;
-    opacity: 0.2;
-    background-position: center center;
-    background-repeat: no-repeat;
-    background-size: contain; }
-  .resource-card .icon {
-    background-position: center center;
-    background-repeat: no-repeat;
-    background-size: contain;
-    opacity: 0;
-    transition: 0.4s ease; }
-  .resource-card:hover .icon {
-    opacity: 0.2; }
-  .resource-card:hover {
-    opacity: 1;
-    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.5); }
-  .resource-card.resource-card-youtube.nophoto .photo:after, .resource-card.resource-card-youtube .icon {
-    background-image: url(../images/card_video.png); }
-  .resource-card.resource-card-samples.nophoto .photo:after, .resource-card.resource-card-samples .icon {
-    background-image: url(../images/card_sample.png); }
-  .resource-card.resource-card-blog.nophoto .photo:after, .resource-card.resource-card-blog .icon {
-    background-image: url(../images/card_post.png); }
-  .resource-card.resource-card-training.nophoto .photo:after, .resource-card.resource-card-training .icon {
-    background-image: url(../images/card_training.png); }
-  .resource-card .resource-card-text {
-    color: #333333; }
-  .resource-card .title {
-    /*font-weight: 700;*/
-    font-family: 'Roboto Condensed'; }
-  .resource-card .subtitle {
-    font-family: 'Roboto Condensed';
-    text-transform: uppercase;
-    opacity: 0.3; }
-  .resource-card .abstract {
-    font-weight: 300;
-    font-family: 'Roboto'; }
-  .resource-card.resource-card-12x7 {
-    width: 700px;
-    height: 400px;
-    -webkit-flex-direction: column; }
-    .resource-card.resource-card-12x7 .photo {
-      -webkit-flex: 1 1 auto;
-      border-bottom: 1px solid #ddd; }
-    .resource-card.resource-card-12x7 .resource-card-text {
-      margin: 20px;
-      padding-right: 88px; }
-    .resource-card.resource-card-12x7 .icon {
-      position: absolute;
-      right: 20px;
-      bottom: 20px;
-      width: 48px;
-      height: 48px; }
-    .resource-card.resource-card-12x7 .title {
-      font-size: 36px;
-      line-height: 35px;
-      max-height: 70px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical; }
-    .resource-card.resource-card-12x7 .subtitle {
-      font-size: 18px;
-      line-height: 20px;
-      max-height: 20px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 1;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      margin-top: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-12x7:hover .subtitle {
-      margin-top: 10px;
-      max-height: 20px; }
-    .resource-card.resource-card-12x7 .abstract {
-      font-size: 18px;
-      margin-top: 0;
-      line-height: 25px;
-      max-height: 75px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 3;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-12x7:hover .abstract {
-      margin-top: 20px;
-      max-height: 75px; }
-  .resource-card.resource-card-8x6 {
-    width: 460px;
-    height: 340px;
-    -webkit-flex-direction: column; }
-    .resource-card.resource-card-8x6 .photo {
-      -webkit-flex: 1 1 auto;
-      border-bottom: 1px solid #ddd; }
-    .resource-card.resource-card-8x6 .resource-card-text {
-      margin: 20px;
-      padding-right: 88px; }
-    .resource-card.resource-card-8x6 .icon {
-      position: absolute;
-      right: 20px;
-      bottom: 20px;
-      width: 48px;
-      height: 48px; }
-    .resource-card.resource-card-8x6 .title {
-      font-size: 36px;
-      line-height: 35px;
-      max-height: 70px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical; }
-    .resource-card.resource-card-8x6 .subtitle {
-      font-size: 18px;
-      line-height: 20px;
-      max-height: 20px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 1;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      margin-top: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-8x6:hover .subtitle {
-      margin-top: 10px;
-      max-height: 20px; }
-    .resource-card.resource-card-8x6 .abstract {
-      font-size: 18px;
-      margin-top: 0;
-      line-height: 25px;
-      max-height: 75px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 3;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-8x6:hover .abstract {
-      margin-top: 20px;
-      max-height: 75px; }
-    .resource-card.resource-card-8x6 .icon {
-      width: 32px;
-      height: 32px; }
-    .resource-card.resource-card-8x6 .title {
-      font-size: 24px;
-      line-height: 25px;
-      max-height: 50px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical; }
-    .resource-card.resource-card-8x6 .abstract {
-      font-size: 16px;
-      margin-top: 10px;
-      line-height: 20px;
-      max-height: 60px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 3;
-      -webkit-box-orient: vertical; }
-    .resource-card.resource-card-8x6 .subtitle {
-      font-size: 16px;
-      line-height: 20px;
-      max-height: 20px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 1;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      margin-top: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-8x6:hover .subtitle {
-      margin-top: 10px;
-      max-height: 20px; }
-    .resource-card.resource-card-8x6 .abstract {
-      font-size: 16px;
-      margin-top: 0;
-      line-height: 20px;
-      max-height: 60px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 3;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-8x6:hover .abstract {
-      margin-top: 10px;
-      max-height: 60px; }
-  .resource-card.resource-card-6x4 {
-    width: 340px;
-    height: 220px;
-    -webkit-flex-direction: column; }
-    .resource-card.resource-card-6x4 .photo {
-      -webkit-flex: 1 1 auto;
-      border-bottom: 1px solid #ddd; }
-    .resource-card.resource-card-6x4 .resource-card-text {
-      margin: 10px;
-      padding-right: 26px; }
-    .resource-card.resource-card-6x4 .icon {
-      position: absolute;
-      right: 10px;
-      bottom: 10px;
-      width: 16px;
-      height: 16px; }
-    .resource-card.resource-card-6x4 .title {
-      font-size: 16px;
-      line-height: 20px;
-      max-height: 40px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical; }
-    .resource-card.resource-card-6x4 .subtitle {
-      font-size: 13px;
-      line-height: 15px;
-      max-height: 30px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      margin-top: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-6x4:hover .subtitle {
-      max-height: 30px; }
-    .resource-card.resource-card-6x4 .abstract {
-      display: none; }
-    .resource-card.resource-card-6x4 .abstract {
-      font-size: 13px;
-      margin-top: 0;
-      line-height: 15px;
-      max-height: 30px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      display: block;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-6x4:hover .abstract {
-      margin-top: 10px;
-      max-height: 30px; }
-  .resource-card.resource-card-4x3 {
-    width: 220px;
-    height: 160px;
-    -webkit-flex-direction: column; }
-    .resource-card.resource-card-4x3 .photo {
-      -webkit-flex: 1 1 auto;
-      border-bottom: 1px solid #ddd; }
-    .resource-card.resource-card-4x3 .resource-card-text {
-      margin: 10px;
-      padding-right: 26px; }
-    .resource-card.resource-card-4x3 .icon {
-      position: absolute;
-      right: 10px;
-      bottom: 10px;
-      width: 16px;
-      height: 16px; }
-    .resource-card.resource-card-4x3 .title {
-      font-size: 16px;
-      line-height: 20px;
-      max-height: 40px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical; }
-    .resource-card.resource-card-4x3 .subtitle {
-      font-size: 13px;
-      line-height: 15px;
-      max-height: 30px;
-      text-overflow: ellipsis;
-      display: -webkit-box;
-      overflow: hidden;
-      -webkit-line-clamp: 2;
-      -webkit-box-orient: vertical;
-      max-height: 0;
-      margin-top: 0;
-      transition: 0.4s ease; }
-    .resource-card.resource-card-4x3:hover .subtitle {
-      max-height: 30px; }
-    .resource-card.resource-card-4x3 .abstract {
-      display: none; }
diff --git a/tools/droiddoc/templates-sdk/assets/images/breadcrumb.png b/tools/droiddoc/templates-sdk/assets/images/breadcrumb.png
new file mode 100644
index 0000000..407a318
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/breadcrumb.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/card_post.png b/tools/droiddoc/templates-sdk/assets/images/card_post.png
deleted file mode 100644
index e061ee9..0000000
--- a/tools/droiddoc/templates-sdk/assets/images/card_post.png
+++ /dev/null
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/card_sample.png b/tools/droiddoc/templates-sdk/assets/images/card_sample.png
deleted file mode 100644
index 3dc36e0..0000000
--- a/tools/droiddoc/templates-sdk/assets/images/card_sample.png
+++ /dev/null
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/card_training.png b/tools/droiddoc/templates-sdk/assets/images/card_training.png
deleted file mode 100644
index 5bb7c81..0000000
--- a/tools/droiddoc/templates-sdk/assets/images/card_training.png
+++ /dev/null
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/card_video.png b/tools/droiddoc/templates-sdk/assets/images/card_video.png
deleted file mode 100644
index 807c0af..0000000
--- a/tools/droiddoc/templates-sdk/assets/images/card_video.png
+++ /dev/null
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/link-out.png b/tools/droiddoc/templates-sdk/assets/images/link-out.png
new file mode 100644
index 0000000..aa55f9a
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/link-out.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/resource-card-default-android.jpg b/tools/droiddoc/templates-sdk/assets/images/resource-card-default-android.jpg
new file mode 100644
index 0000000..8050744
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/resource-card-default-android.jpg
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/images/stack-arrow-right.png b/tools/droiddoc/templates-sdk/assets/images/stack-arrow-right.png
new file mode 100644
index 0000000..46d6a50
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/stack-arrow-right.png
Binary files differ
diff --git a/tools/droiddoc/templates-sdk/assets/js/docs.js b/tools/droiddoc/templates-sdk/assets/js/docs.js
index 6630bf9..e6befe3 100644
--- a/tools/droiddoc/templates-sdk/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk/assets/js/docs.js
@@ -167,10 +167,12 @@
   // highlight Design tab
   if ($("body").hasClass("design")) {
     $("#header li.design a").addClass("selected");
+    $("#sticky-header").addClass("design");
 
   // highlight Develop tab
   } else if ($("body").hasClass("develop") || $("body").hasClass("google")) {
     $("#header li.develop a").addClass("selected");
+    $("#sticky-header").addClass("develop");
     // In Develop docs, also highlight appropriate sub-tab
     var rootDir = pagePathOriginal.substring(1,pagePathOriginal.indexOf('/', 1));
     if (rootDir == "training") {
@@ -195,12 +197,34 @@
   // highlight Distribute tab
   } else if ($("body").hasClass("distribute")) {
     $("#header li.distribute a").addClass("selected");
-  }
+    $("#sticky-header").addClass("distribute");
+
+    var baseFrag = pagePathOriginal.indexOf('/', 1) + 1;
+    var secondFrag = pagePathOriginal.substring(baseFrag, pagePathOriginal.indexOf('/', baseFrag));
+    if (secondFrag == "users") {
+      $("#nav-x li.users a").addClass("selected");
+    } else if (secondFrag == "engage") {
+      $("#nav-x li.engage a").addClass("selected");
+    } else if (secondFrag == "monetize") {
+      $("#nav-x li.monetize a").addClass("selected");
+    } else if (secondFrag == "tools") {
+      $("#nav-x li.disttools a").addClass("selected");
+    } else if (secondFrag == "stories") {
+      $("#nav-x li.stories a").addClass("selected");
+    } else if (secondFrag == "essentials") {
+      $("#nav-x li.essentials a").addClass("selected");
+    } else if (secondFrag == "googleplay") {
+      $("#nav-x li.googleplay a").addClass("selected");
+    }
+  } else if ($("body").hasClass("about")) {
+    $("#sticky-header").addClass("about");
+  } 
 
   // set global variable so we can highlight the sidenav a bit later (such as for google reference)
   // and highlight the sidenav
   mPagePath = pagePath;
   highlightSidenav();
+  buildBreadcrumbs();
 
   // set up prev/next links if they exist
   var $selNavLink = $('#nav').find('a[href="' + pagePath + '"]');
@@ -385,70 +409,6 @@
   });
 
 
-  // Set up fixed navbar
-  var prevScrollLeft = 0; // used to compare current position to previous position of horiz scroll
-  $(window).scroll(function(event) {
-    if ($('#side-nav').length == 0) return;
-    if (event.target.nodeName == "DIV") {
-      // Dump scroll event if the target is a DIV, because that means the event is coming
-      // from a scrollable div and so there's no need to make adjustments to our layout
-      return;
-    }
-    var scrollTop = $(window).scrollTop();
-    var headerHeight = $('#header').outerHeight();
-    var subheaderHeight = $('#nav-x').outerHeight();
-    var searchResultHeight = $('#searchResults').is(":visible") ?
-                             $('#searchResults').outerHeight() : 0;
-    var totalHeaderHeight = headerHeight + subheaderHeight + searchResultHeight;
-    // we set the navbar fixed when the scroll position is beyond the height of the site header...
-    var navBarShouldBeFixed = scrollTop > totalHeaderHeight;
-    // ... except if the document content is shorter than the sidenav height.
-    // (this is necessary to avoid crazy behavior on OSX Lion due to overscroll bouncing)
-    if ($("#doc-col").height() < $("#side-nav").height()) {
-      navBarShouldBeFixed = false;
-    }
-
-    var scrollLeft = $(window).scrollLeft();
-    // When the sidenav is fixed and user scrolls horizontally, reposition the sidenav to match
-    if (navBarIsFixed && (scrollLeft != prevScrollLeft)) {
-      updateSideNavPosition();
-      prevScrollLeft = scrollLeft;
-    }
-
-    // Don't continue if the header is sufficently far away
-    // (to avoid intensive resizing that slows scrolling)
-    if (navBarIsFixed && navBarShouldBeFixed) {
-      return;
-    }
-
-    if (navBarIsFixed != navBarShouldBeFixed) {
-      if (navBarShouldBeFixed) {
-        // make it fixed
-        var width = $('#devdoc-nav').width();
-        $('#devdoc-nav')
-            .addClass('fixed')
-            .css({'width':width+'px'})
-            .prependTo('#body-content');
-        // add neato "back to top" button
-        $('#devdoc-nav a.totop').css({'display':'block','width':$("#nav").innerWidth()+'px'});
-
-        // update the sidenaav position for side scrolling
-        updateSideNavPosition();
-      } else {
-        // make it static again
-        $('#devdoc-nav')
-            .removeClass('fixed')
-            .css({'width':'auto','margin':''})
-            .prependTo('#side-nav');
-        $('#devdoc-nav a.totop').hide();
-      }
-      navBarIsFixed = navBarShouldBeFixed;
-    }
-
-    resizeNav(250); // pass true in order to delay the scrollbar re-initialization for performance
-  });
-
-
   var navBarLeftPos;
   if ($('#devdoc-nav').length) {
     setNavBarLeftPos();
@@ -593,6 +553,28 @@
   });
 }
 
+
+/** Create the list of breadcrumb links in the sticky header */
+function buildBreadcrumbs() {
+  var $breadcrumbUl =  $("#sticky-header ul.breadcrumb");
+  // Add the secondary horizontal nav item, if provided
+  var $selectedSecondNav = $("div#nav-x ul.nav-x a.selected").clone().removeClass("selected");
+  if ($selectedSecondNav.length) {
+    $breadcrumbUl.prepend($("<li>").append($selectedSecondNav))
+  }
+  // Add the primary horizontal nav
+  var $selectedFirstNav = $("div#header-wrap ul.nav-x a.selected").clone().removeClass("selected");
+  // If there's no header nav item, use the logo link and title from alt text
+  if ($selectedFirstNav.length < 1) {
+    $selectedFirstNav = $("<a>")
+        .attr('href', $("div#header .logo a").attr('href'))
+        .text($("div#header .logo img").attr('alt'));
+  }
+  $breadcrumbUl.prepend($("<li>").append($selectedFirstNav));
+}
+
+
+
 /** Highlight the current page in sidenav, expanding children as appropriate */
 function highlightSidenav() {
   // if something is already highlighted, undo it. This is for dynamic navigation (Samples index)
@@ -705,9 +687,8 @@
   // Then figure out based on scroll position whether the header is visible
   var windowHeight = $window.height();
   var scrollTop = $window.scrollTop();
-  var headerHeight = $('#header').outerHeight();
-  var subheaderHeight = $('#nav-x').outerHeight();
-  var headerVisible = (scrollTop < (headerHeight + subheaderHeight));
+  var headerHeight = $('#header-wrapper').outerHeight();
+  var headerVisible = scrollTop < stickyTop;
 
   // get the height of space between nav and top of window.
   // Could be either margin or top position, depending on whether the nav is fixed.
@@ -717,7 +698,7 @@
   // Depending on whether the header is visible, set the side nav's height.
   if (headerVisible) {
     // The sidenav height grows as the header goes off screen
-    navHeight = windowHeight - (headerHeight + subheaderHeight - scrollTop) - topMargin;
+    navHeight = windowHeight - (headerHeight - scrollTop) - topMargin;
   } else {
     // Once header is off screen, the nav height is almost full window height
     navHeight = windowHeight - topMargin;
@@ -905,8 +886,115 @@
 
 
 
+var stickyTop;
+/* Sets the vertical scoll position at which the sticky bar should appear.
+   This method is called to reset the position when search results appear or hide */
+function setStickyTop() {
+  stickyTop = $('#header-wrapper').outerHeight() - $('#sticky-header').outerHeight();
+}
 
 
+/* 
+ * Displays sticky nav bar on pages when dac header scrolls out of view 
+ */
+(function() {
+  $(document).ready(function() {
+
+    setStickyTop();
+    var sticky = false;
+    var hiding = false;
+    var $stickyEl = $('#sticky-header');
+    var $menuEl = $('.menu-container');
+
+    var prevScrollLeft = 0; // used to compare current position to previous position of horiz scroll
+
+    $(window).scroll(function() {
+      // Exit if there's no sidenav
+      if ($('#side-nav').length == 0) return;
+      // Exit if the mouse target is a DIV, because that means the event is coming
+      // from a scrollable div and so there's no need to make adjustments to our layout
+      if (event.target.nodeName == "DIV") {
+        return;
+      }
+
+
+      var top = $(window).scrollTop();
+      // we set the navbar fixed when the scroll position is beyond the height of the site header...
+      var shouldBeSticky = top >= stickyTop;
+      // ... except if the document content is shorter than the sidenav height.
+      // (this is necessary to avoid crazy behavior on OSX Lion due to overscroll bouncing)
+      if ($("#doc-col").height() < $("#side-nav").height()) {
+        shouldBeSticky = false;
+      }
+
+      // Don't continue if the header is sufficently far away
+      // (to avoid intensive resizing that slows scrolling)
+      if (sticky && shouldBeSticky) {
+        return;
+      }
+
+      // Account for horizontal scroll
+      var scrollLeft = $(window).scrollLeft();
+      // When the sidenav is fixed and user scrolls horizontally, reposition the sidenav to match
+      if (navBarIsFixed && (scrollLeft != prevScrollLeft)) {
+        updateSideNavPosition();
+        prevScrollLeft = scrollLeft;
+      }
+
+      // If sticky header visible and position is now near top, hide sticky
+      if (sticky && !shouldBeSticky) {
+        sticky = false;
+        hiding = true;
+        // make the sidenav static again
+        $('#devdoc-nav')
+            .removeClass('fixed')
+            .css({'width':'auto','margin':''})
+            .prependTo('#side-nav');
+        // delay hide the sticky
+        $menuEl.removeClass('sticky-menu');
+        $stickyEl.fadeOut(250);
+        hiding = false;
+
+        // update the sidenaav position for side scrolling
+        updateSideNavPosition();
+      } else if (!sticky && shouldBeSticky) {
+        sticky = true;
+        $stickyEl.fadeIn(10);
+        $menuEl.addClass('sticky-menu');
+
+        // make the sidenav fixed
+        var width = $('#devdoc-nav').width();
+        $('#devdoc-nav')
+            .addClass('fixed')
+            .css({'width':width+'px'})
+            .prependTo('#body-content');
+
+        // update the sidenaav position for side scrolling
+        updateSideNavPosition();
+
+      } else if (hiding && top < 15) {
+        $menuEl.removeClass('sticky-menu');
+        $stickyEl.hide();
+        hiding = false;
+      }
+
+      resizeNav(250); // pass true in order to delay the scrollbar re-initialization for performance
+    });
+
+    // Stack hover states
+    $('.section-card-menu').each(function(index, el) {
+      var height = $(el).height();
+      $(el).css({height:height+'px', position:'relative'});
+      var $cardInfo = $(el).find('.card-info');
+
+      $cardInfo.css({position: 'absolute', bottom:'0px', left:'0px', right:'0px', overflow:'visible'});
+    });
+
+    resizeNav();  // must resize once loading is finished
+  });
+
+})();
+
 
 
 
@@ -1724,6 +1812,7 @@
             $('.suggest-card').hide();
             if ($("#searchResults").is(":hidden") && (search.value != "")) {
               // if results aren't showing (and text not empty), return true to allow search to execute
+              $('body,html').animate({scrollTop:0}, '500', 'swing');
               return true;
             } else {
               // otherwise, results are already showing, so allow ajax to auto refresh the results
@@ -2278,13 +2367,13 @@
   var query = document.getElementById('search_autocomplete').value;
   location.hash = 'q=' + query;
   loadSearchResults();
-  $("#searchResults").slideDown('slow');
+  $("#searchResults").slideDown('slow', setStickyTop);
   return false;
 }
 
 
 function hideResults() {
-  $("#searchResults").slideUp();
+  $("#searchResults").slideUp('fast', setStickyTop);
   $(".search .close").addClass("hide");
   location.hash = '';
 
@@ -2401,7 +2490,7 @@
     return;
   } else {
     // first time loading search results for this page
-    $('#searchResults').slideDown('slow');
+    $('#searchResults').slideDown('slow', setStickyTop);
     $(".search .close").removeClass("hide");
     loadSearchResults();
   }
@@ -2409,19 +2498,22 @@
 
 // when an event on the browser history occurs (back, forward, load) requery hash and do search
 $(window).hashchange( function(){
-  // Exit if the hash isn't a search query or there's an error in the query
+  // If the hash isn't a search query or there's an error in the query,
+  // then adjust the scroll position to account for sticky header, then exit.
   if ((location.hash.indexOf("q=") == -1) || (query == "undefined")) {
     // If the results pane is open, close it.
     if (!$("#searchResults").is(":hidden")) {
       hideResults();
     }
+    // Adjust the scroll position to account for sticky header
+    $(window).scrollTop($(window).scrollTop() - 60);
     return;
   }
 
   // Otherwise, we have a search to do
   var query = decodeURI(getQuery(location.hash));
   searchControl.execute(query);
-  $('#searchResults').slideDown('slow');
+  $('#searchResults').slideDown('slow', setStickyTop);
   $("#search_autocomplete").focus();
   $(".search .close").removeClass("hide");
 
@@ -3233,3 +3325,560 @@
   $("#samples").append($ul);
 
 }
+
+
+
+/* ########################################################## */
+/* ###################  RESOURCE CARDS  ##################### */
+/* ########################################################## */
+
+/** Handle resource queries, collections, and grids (sections). Requires
+    jd_tag_helpers.js and the *_unified_data.js to be loaded. */
+
+(function() {
+  // Prevent the same resource from being loaded more than once per page.
+  var addedPageResources = {};
+
+  $(document).ready(function() {
+    $('.resource-widget').each(function() {
+      initResourceWidget(this);
+    });
+
+    /* Pass the line height to ellipsisfade() to adjust the height of the
+    text container to show the max number of lines possible, without
+    showing lines that are cut off. This works with the css ellipsis
+    classes to fade last text line and apply an ellipsis char. */
+
+    //card text currently uses 15px line height. 
+    var lineHeight = 15;
+    $('.card-info .text').ellipsisfade(lineHeight);
+  });
+
+  /*
+    Three types of resource layouts:
+    Flow - Uses a fixed row-height flow using float left style.
+    Carousel - Single card slideshow all same dimension absolute.
+    Stack - Uses fixed columns and flexible element height.
+  */
+  function initResourceWidget(widget) {
+    var $widget = $(widget);
+    var isFlow = $widget.hasClass('resource-flow-layout'),
+        isCarousel = $widget.hasClass('resource-carousel-layout'),
+        isStack = $widget.hasClass('resource-stack-layout');
+
+    // find size of widget by pulling out its class name
+    var sizeCols = 1;
+    var m = $widget.get(0).className.match(/\bcol-(\d+)\b/);
+    if (m) {
+      sizeCols = parseInt(m[1], 10);
+    }
+
+    var opts = {
+      cardSizes: ($widget.data('cardsizes') || '').split(','),
+      maxResults: parseInt($widget.data('maxresults') || '100', 10),
+      itemsPerPage: $widget.data('itemsperpage'),
+      sortOrder: $widget.data('sortorder'),
+      query: $widget.data('query'),
+      section: $widget.data('section'),
+      sizeCols: sizeCols
+    };
+
+    // run the search for the set of resources to show
+
+    var resources = buildResourceList(opts);
+
+    if (isFlow) {
+      drawResourcesFlowWidget($widget, opts, resources);
+    } else if (isCarousel) {
+      drawResourcesCarouselWidget($widget, opts, resources);
+    } else if (isStack) {
+      var sections = buildSectionList(opts);
+      opts['numStacks'] = $widget.data('numstacks');
+      drawResourcesStackWidget($widget, opts, resources, sections);
+    }
+  }
+
+  /* Initializes a Resource Carousel Widget */
+  function drawResourcesCarouselWidget($widget, opts, resources) {
+    $widget.empty();
+    var plusone = true; //always show plusone on carousel
+
+    $widget.addClass('resource-card slideshow-container')
+      .append($('<a>').addClass('slideshow-prev').text('Prev'))
+      .append($('<a>').addClass('slideshow-next').text('Next'));
+
+    var css = { 'width': $widget.width() + 'px',
+                'height': $widget.height() + 'px' };
+
+    var $ul = $('<ul>');
+
+    for (var i = 0; i < resources.length; ++i) {
+      //keep url clean for matching and offline mode handling
+      var urlPrefix = resources[i].url.indexOf("//") > -1 ? "" : toRoot;
+      var $card = $('<a>')
+        .attr('href', urlPrefix + resources[i].url)
+        .decorateResourceCard(resources[i],plusone);
+
+      $('<li>').css(css)
+          .append($card)
+          .appendTo($ul);
+    }
+
+    $('<div>').addClass('frame')
+      .append($ul)
+      .appendTo($widget);
+
+    $widget.dacSlideshow({
+      auto: true,
+      btnPrev: '.slideshow-prev',
+      btnNext: '.slideshow-next'
+    });
+  };
+
+  /* Initializes a Resource Card Stack Widget (column-based layout) */
+  function drawResourcesStackWidget($widget, opts, resources, sections) {
+    // Don't empty widget, grab all items inside since they will be the first
+    // items stacked, followed by the resource query
+    var plusone = true; //by default show plusone on section cards
+    var cards = $widget.find('.resource-card').detach().toArray();
+    var numStacks = opts.numStacks || 1;
+    var $stacks = [];
+    var urlString;
+
+    for (var i = 0; i < numStacks; ++i) {
+      $stacks[i] = $('<div>').addClass('resource-card-stack')
+          .appendTo($widget);
+    }
+
+    var sectionResources = [];
+
+    // Extract any subsections that are actually resource cards
+    for (var i = 0; i < sections.length; ++i) {
+      if (!sections[i].sections || !sections[i].sections.length) {
+        //keep url clean for matching and offline mode handling
+        urlPrefix = sections[i].url.indexOf("//") > -1 ? "" : toRoot;
+        // Render it as a resource card
+
+        sectionResources.push(
+          $('<a>')
+            .addClass('resource-card section-card')
+            .attr('href', urlPrefix + sections[i].resource.url)
+            .decorateResourceCard(sections[i].resource,plusone)[0]
+        );
+
+      } else {
+        cards.push(
+          $('<div>')
+            .addClass('resource-card section-card-menu')
+            .decorateResourceSection(sections[i],plusone)[0]
+        );
+      }
+    }
+
+    cards = cards.concat(sectionResources);
+
+    for (var i = 0; i < resources.length; ++i) {
+      //keep url clean for matching and offline mode handling
+      urlPrefix = resources[i].url.indexOf("//") > -1 ? "" : toRoot;
+      var $card = $('<a>')
+          .addClass('resource-card related-card')
+          .attr('href', urlPrefix + resources[i].url)
+          .decorateResourceCard(resources[i],plusone);
+
+      cards.push($card[0]);
+    }
+
+    for (var i = 0; i < cards.length; ++i) {
+      // Find the stack with the shortest height, but give preference to
+      // left to right order.
+      var minHeight = $stacks[0].height();
+      var minIndex = 0;
+
+      for (var j = 1; j < numStacks; ++j) {
+        var height = $stacks[j].height();
+        if (height < minHeight - 45) {
+          minHeight = height;
+          minIndex = j;
+        }
+      }
+
+      $stacks[minIndex].append($(cards[i]));
+    }
+
+  };
+
+  /* Initializes a flow widget, see distribute.scss for generating accompanying css */
+  function drawResourcesFlowWidget($widget, opts, resources) {
+    $widget.empty();
+    var cardSizes = opts.cardSizes || ['6x6'];
+    var i = 0, j = 0;
+    var plusone = true; // by default show plusone on resource cards
+
+    while (i < resources.length) {
+      var cardSize = cardSizes[j++ % cardSizes.length];
+      cardSize = cardSize.replace(/^\s+|\s+$/,'');
+      console.log("cardsize is " + cardSize);
+      // Some card sizes do not get a plusone button, such as where space is constrained
+      // or for cards commonly embedded in docs (to improve overall page speed).
+      plusone = !((cardSize == "6x2") || (cardSize == "6x3") ||
+                  (cardSize == "9x2") || (cardSize == "9x3") ||
+                  (cardSize == "12x2") || (cardSize == "12x3"));
+
+      // A stack has a third dimension which is the number of stacked items
+      var isStack = cardSize.match(/(\d+)x(\d+)x(\d+)/);
+      var stackCount = 0;
+      var $stackDiv = null;
+
+      if (isStack) {
+        // Create a stack container which should have the dimensions defined
+        // by the product of the items inside.
+        $stackDiv = $('<div>').addClass('resource-card-stack resource-card-' + isStack[1]
+            + 'x' + isStack[2] * isStack[3]) .appendTo($widget);
+      }
+
+      // Build each stack item or just a single item
+      do {
+        var resource = resources[i];
+        //keep url clean for matching and offline mode handling
+        urlPrefix = resource.url.indexOf("//") > -1 ? "" : toRoot;
+        var $card = $('<a>')
+            .addClass('resource-card resource-card-' + cardSize + ' resource-card-' + resource.type)
+            .attr('href', urlPrefix + resource.url);
+
+        if (isStack) {
+          $card.addClass('resource-card-' + isStack[1] + 'x' + isStack[2]);
+          if (++stackCount == parseInt(isStack[3])) {
+            $card.addClass('resource-card-row-stack-last');
+            stackCount = 0;
+          }
+        } else {
+          stackCount = 0;
+        }
+
+        $card.decorateResourceCard(resource,plusone)
+          .appendTo($stackDiv || $widget);
+
+      } while (++i < resources.length && stackCount > 0);
+    }
+  }
+
+  /* Build a site map of resources using a section as a root. */
+  function buildSectionList(opts) {
+    if (opts.section && SECTION_BY_ID[opts.section]) {
+      return SECTION_BY_ID[opts.section].sections || [];
+    }
+    return [];
+  }
+
+  function buildResourceList(opts) {
+    var maxResults = opts.maxResults || 100;
+
+    var query = opts.query || '';
+    var expressions = parseResourceQuery(query);
+    var addedResourceIndices = {};
+    var results = [];
+
+    for (var i = 0; i < expressions.length; i++) {
+      var clauses = expressions[i];
+
+      // build initial set of resources from first clause
+      var firstClause = clauses[0];
+      var resources = [];
+      switch (firstClause.attr) {
+        case 'type':
+          resources = ALL_RESOURCES_BY_TYPE[firstClause.value];
+          break;
+        case 'lang':
+          resources = ALL_RESOURCES_BY_LANG[firstClause.value];
+          break;
+        case 'tag':
+          resources = ALL_RESOURCES_BY_TAG[firstClause.value];
+          break;
+        case 'collection':
+          var urls = RESOURCE_COLLECTIONS[firstClause.value].resources || [];
+          resources = urls.map(function(url){ return ALL_RESOURCES_BY_URL[url]; });
+          break;
+        case 'section':
+          var urls = SITE_MAP[firstClause.value].sections || [];
+          resources = urls.map(function(url){ return ALL_RESOURCES_BY_URL[url]; });
+          break;
+      }
+      // console.log(firstClause.attr + ':' + firstClause.value);
+      resources = resources || [];
+
+      // use additional clauses to filter corpus
+      if (clauses.length > 1) {
+        var otherClauses = clauses.slice(1);
+        resources = resources.filter(getResourceMatchesClausesFilter(otherClauses));
+      }
+
+      // filter out resources already added
+      if (i > 1) {
+        resources = resources.filter(getResourceNotAlreadyAddedFilter(addedResourceIndices));
+      }
+
+      // add to list of already added indices
+      for (var j = 0; j < resources.length; j++) {
+        // console.log(resources[j].title);
+        addedResourceIndices[resources[j].index] = 1;
+      }
+
+      // concat to final results list
+      results = results.concat(resources);
+    }
+
+    if (opts.sortOrder && results.length) {
+      var attr = opts.sortOrder;
+
+      if (opts.sortOrder == 'random') {
+        var i = results.length, j, temp;
+        while (--i) {
+          j = Math.floor(Math.random() * (i + 1));
+          temp = results[i];
+          results[i] = results[j];
+          results[j] = temp;
+        }
+      } else {
+        var desc = attr.charAt(0) == '-';
+        if (desc) {
+          attr = attr.substring(1);
+        }
+        results = results.sort(function(x,y) {
+          return (desc ? -1 : 1) * (parseInt(x[attr], 10) - parseInt(y[attr], 10));
+        });
+      }
+    }
+
+    results = results.filter(getResourceNotAlreadyAddedFilter(addedPageResources));
+    results = results.slice(0, maxResults);
+
+    for (var j = 0; j < results.length; ++j) {
+      addedPageResources[results[j].index] = 1;
+    }
+
+    return results;
+  }
+
+
+  function getResourceNotAlreadyAddedFilter(addedResourceIndices) {
+    return function(resource) {
+      return !addedResourceIndices[resource.index];
+    };
+  }
+
+
+  function getResourceMatchesClausesFilter(clauses) {
+    return function(resource) {
+      return doesResourceMatchClauses(resource, clauses);
+    };
+  }
+
+
+  function doesResourceMatchClauses(resource, clauses) {
+    for (var i = 0; i < clauses.length; i++) {
+      var map;
+      switch (clauses[i].attr) {
+        case 'type':
+          map = IS_RESOURCE_OF_TYPE[clauses[i].value];
+          break;
+        case 'lang':
+          map = IS_RESOURCE_IN_LANG[clauses[i].value];
+          break;
+        case 'tag':
+          map = IS_RESOURCE_TAGGED[clauses[i].value];
+          break;
+      }
+
+      if (!map || (!!clauses[i].negative ? map[resource.index] : !map[resource.index])) {
+        return clauses[i].negative;
+      }
+    }
+    return true;
+  }
+
+
+  function parseResourceQuery(query) {
+    // Parse query into array of expressions (expression e.g. 'tag:foo + type:video')
+    var expressions = [];
+    var expressionStrs = query.split(',') || [];
+    for (var i = 0; i < expressionStrs.length; i++) {
+      var expr = expressionStrs[i] || '';
+
+      // Break expression into clauses (clause e.g. 'tag:foo')
+      var clauses = [];
+      var clauseStrs = expr.split(/(?=[\+\-])/);
+      for (var j = 0; j < clauseStrs.length; j++) {
+        var clauseStr = clauseStrs[j] || '';
+
+        // Get attribute and value from clause (e.g. attribute='tag', value='foo')
+        var parts = clauseStr.split(':');
+        var clause = {};
+
+        clause.attr = parts[0].replace(/^\s+|\s+$/g,'');
+        if (clause.attr) {
+          if (clause.attr.charAt(0) == '+') {
+            clause.attr = clause.attr.substring(1);
+          } else if (clause.attr.charAt(0) == '-') {
+            clause.negative = true;
+            clause.attr = clause.attr.substring(1);
+          }
+        }
+
+        if (parts.length > 1) {
+          clause.value = parts[1].replace(/^\s+|\s+$/g,'');
+        }
+
+        clauses.push(clause);
+      }
+
+      if (!clauses.length) {
+        continue;
+      }
+
+      expressions.push(clauses);
+    }
+
+    return expressions;
+  }
+})();
+
+(function($) {
+  /* Simple jquery function to create dom for a standard resource card */
+  $.fn.decorateResourceCard = function(resource,plusone) {
+    var section = resource.group || resource.type;
+    var imgUrl;
+    if (resource.image) {
+      //keep url clean for matching and offline mode handling
+      var urlPrefix = resource.image.indexOf("//") > -1 ? "" : toRoot;
+      imgUrl = urlPrefix + resource.image;
+    }
+    //add linkout logic here. check url or type, assign a class, map to css :after
+    $('<div>')
+        .addClass('card-bg')
+        .css('background-image', 'url(' + (imgUrl || toRoot + 'assets/images/resource-card-default-android.jpg') + ')')
+      .appendTo(this);
+    if (!plusone) {
+      $('<div>').addClass('card-info' + (!resource.summary ? ' empty-desc' : ''))
+        .append($('<div>').addClass('section').text(section))
+        .append($('<div>').addClass('title').html(resource.title))
+        .append($('<div>').addClass('description ellipsis')
+            .append($('<div>').addClass('text').html(resource.summary))
+          .append($('<div>').addClass('util')))
+          .appendTo(this);
+    } else {
+      $('<div>').addClass('card-info' + (!resource.summary ? ' empty-desc' : ''))
+        .append($('<div>').addClass('section').text(section))
+        .append($('<div>').addClass('title').html(resource.title))
+        .append($('<div>').addClass('description ellipsis')
+            .append($('<div>').addClass('text').html(resource.summary))
+          .append($('<div>').addClass('util')
+            .append($('<div>').addClass('g-plusone')
+              .attr('data-size', 'small')
+              .attr('data-align', 'right')
+              .attr('data-href', resource.url))))
+            .appendTo(this);
+    }
+
+    return this;
+  };
+
+  /* Simple jquery function to create dom for a resource section card (menu) */
+  $.fn.decorateResourceSection = function(section,plusone) {
+    var resource = section.resource;
+    //keep url clean for matching and offline mode handling
+    var urlPrefix = resource.image.indexOf("//") > -1 ? "" : toRoot;
+    var $base = $('<a>')
+        .addClass('card-bg')
+        .attr('href', resource.url)
+        .append($('<div>').addClass('card-section-icon')
+          .append($('<div>').addClass('icon'))
+          .append($('<div>').addClass('section').html(resource.title)))
+      .appendTo(this);
+
+    var $cardInfo = $('<div>').addClass('card-info').appendTo(this);
+
+    if (section.sections && section.sections.length) {
+      // Recurse the section sub-tree to find a resource image.
+      var stack = [section];
+
+      while (stack.length) {
+        if (stack[0].resource.image) {
+          $base.css('background-image', 'url(' + urlPrefix + stack[0].resource.image + ')');
+          break;
+        }
+
+        if (stack[0].sections) {
+          stack = stack.concat(stack[0].sections);
+        }
+
+        stack.shift();
+      }
+
+      var $ul = $('<ul>')
+        .appendTo($cardInfo);
+
+      var max = section.sections.length > 3 ? 3 : section.sections.length;
+
+      for (var i = 0; i < max; ++i) {
+
+        var subResource = section.sections[i];
+        if (!plusone) {
+          $('<li>')
+            .append($('<a>').attr('href', subResource.url)
+              .append($('<div>').addClass('title').html(subResource.title))
+              .append($('<div>').addClass('description ellipsis')
+                .append($('<div>').addClass('text').html(subResource.summary))
+                .append($('<div>').addClass('util'))))
+          .appendTo($ul);
+        } else {
+          $('<li>')
+            .append($('<a>').attr('href', subResource.url)
+              .append($('<div>').addClass('title').html(subResource.title))
+              .append($('<div>').addClass('description ellipsis')
+                .append($('<div>').addClass('text').html(subResource.summary))
+                .append($('<div>').addClass('util')
+                  .append($('<div>').addClass('g-plusone')
+                    .attr('data-size', 'small')
+                    .attr('data-align', 'right')
+                    .attr('data-href', resource.url)))))
+          .appendTo($ul);
+        }
+      }
+
+      // Add a more row
+      if (max < section.sections.length) {
+        $('<li>')
+          .append($('<a>').attr('href', resource.url)
+            .append($('<div>')
+              .addClass('title')
+              .text('More')))
+        .appendTo($ul);
+      }
+    } else {
+      // No sub-resources, just render description?
+    }
+
+    return this;
+  };
+})(jQuery);
+/* Calculate the vertical area remaining */
+(function($) {
+    $.fn.ellipsisfade= function(lineHeight) {
+        this.each(function() {
+            // get element text
+            var $this = $(this);
+            var remainingHeight = $this.parent().parent().height();
+            $this.parent().siblings().each(function ()
+            {
+              var h = $(this).height();
+              remainingHeight = remainingHeight - h;
+            });
+
+            adjustedRemainingHeight = ((remainingHeight)/lineHeight>>0)*lineHeight
+            $this.parent().css({'height': adjustedRemainingHeight});
+            $this.css({'height': "auto"});
+        });
+
+        return this;
+    };
+}) (jQuery);
diff --git a/tools/droiddoc/templates-sdk/assets/js/jd_tag_helpers.js b/tools/droiddoc/templates-sdk/assets/js/jd_tag_helpers.js
deleted file mode 100644
index d179cbc..0000000
--- a/tools/droiddoc/templates-sdk/assets/js/jd_tag_helpers.js
+++ /dev/null
@@ -1,106 +0,0 @@
-function mergeArrays() {
-  var arr = arguments[0] || [];
-  for (var i = 1; i < arguments.length; i++) {
-    arr = arr.concat(arguments[i]);
-  }
-  return arr;
-}
-
-var ALL_RESOURCES = mergeArrays(
-  DESIGN_RESOURCES,
-  DISTRIBUTE_RESOURCES,
-  GOOGLE_RESOURCES,
-  GUIDE_RESOURCES,
-  SAMPLES_RESOURCES,
-  TOOLS_RESOURCES,
-  TRAINING_RESOURCES,
-  YOUTUBE_RESOURCES,
-  BLOGGER_RESOURCES
-);
-
-for (var i = 0; i < ALL_RESOURCES.length; i++) {
-  ALL_RESOURCES[i].index = i;
-}
-
-function mergeMaps() {
-  var allRes = {};
-  var offset = 0;
-
-  for (var i = 0; i < arguments.length; i++) {
-    var r = arguments[i];
-    for (var tag in r.map) {
-      allRes[tag] = allRes[tag] || [];
-      allRes[tag] = allRes[tag].concat(r.map[tag].map(function(i){ return ALL_RESOURCES[i + offset]; }));
-    }
-    offset += r.arr.length;
-  }
-
-  return allRes;
-}
-
-function setFromArray(arr) {
-  arr = arr || [];
-  var set = {};
-  for (var i = 0; i < arr.length; i++) {
-    set[arr[i]] = true;
-  }
-  return set;
-}
-
-function buildResourceLookupMap(resourceDict) {
-  var map = {};
-  for (var key in resourceDict) {
-    var dictForKey = {};
-    var srcArr = resourceDict[key];
-    for (var i = 0; i < srcArr.length; i++) {
-      dictForKey[srcArr[i].index] = true;
-    }
-    map[key] = dictForKey;
-  }
-  return map;
-}
-
-// Type lookups
-
-var ALL_RESOURCES_BY_TYPE = {
-  'design': DESIGN_RESOURCES,
-  'distribute': DISTRIBUTE_RESOURCES,
-  'google': GOOGLE_RESOURCES,
-  'guide': GUIDE_RESOURCES,
-  'samples': SAMPLES_RESOURCES,
-  'tools': TOOLS_RESOURCES,
-  'training': TRAINING_RESOURCES,
-  'youtube': YOUTUBE_RESOURCES,
-  'blog': BLOGGER_RESOURCES
-};
-var IS_RESOURCE_OF_TYPE = buildResourceLookupMap(ALL_RESOURCES_BY_TYPE);
-
-// Tag lookups
-
-var ALL_RESOURCES_BY_TAG = mergeMaps(
-  {map:DESIGN_BY_TAG,arr:DESIGN_RESOURCES},
-  {map:DISTRIBUTE_BY_TAG,arr:DISTRIBUTE_RESOURCES},
-  {map:GOOGLE_BY_TAG,arr:GOOGLE_RESOURCES},
-  {map:GUIDE_BY_TAG,arr:GUIDE_RESOURCES},
-  {map:SAMPLES_BY_TAG,arr:SAMPLES_RESOURCES},
-  {map:TOOLS_BY_TAG,arr:TOOLS_RESOURCES},
-  {map:TRAINING_BY_TAG,arr:TRAINING_RESOURCES},
-  {map:YOUTUBE_BY_TAG,arr:YOUTUBE_RESOURCES},
-  {map:BLOGGER_BY_TAG,arr:BLOGGER_RESOURCES}
-);
-var IS_RESOURCE_TAGGED = buildResourceLookupMap(ALL_RESOURCES_BY_TAG);
-
-// Language lookups
-
-var ALL_RESOURCES_BY_LANG = {};
-for (var i = 0; i < ALL_RESOURCES.length; i++) {
-  var res = ALL_RESOURCES[i];
-  var lang = res.lang;
-  if (!lang) {
-    continue;
-  }
-
-  ALL_RESOURCES_BY_LANG[lang] = ALL_RESOURCES_BY_LANG[lang] || [];
-  ALL_RESOURCES_BY_LANG[lang].push(res);
-}
-var IS_RESOURCE_IN_LANG = buildResourceLookupMap(ALL_RESOURCES_BY_LANG);
\ No newline at end of file
diff --git a/tools/droiddoc/templates-sdk/assets/js/resourcecards.js b/tools/droiddoc/templates-sdk/assets/js/resourcecards.js
deleted file mode 100644
index fbba201..0000000
--- a/tools/droiddoc/templates-sdk/assets/js/resourcecards.js
+++ /dev/null
@@ -1,244 +0,0 @@
-// Requires jd_tag_helpers.js and the data JS to be loaded.
-
-$(document).ready(function() {
-  $('.resource-widget').each(function() {
-    initResourceWidget(this);
-  });
-});
-
-
-function initResourceWidget(widget) {
-  var $widget = $(widget);
-  var isFlow, isCarousel;
-  isFlow = $widget.hasClass('resource-flow-layout');
-  if (!isFlow) {
-    isCarousel = $widget.hasClass('resource-carousel-layout');
-  }
-
-  // find size of widget by pulling out its class name
-  var sizeCols = 1;
-  var m = $widget.get(0).className.match(/\bcol-(\d+)\b/);
-  if (m) {
-    sizeCols = parseInt(m[1], 10);
-  }
-
-  var opts = {
-    source: $widget.data('source'),
-    cardSizes: ($widget.data('cardsizes') || '').split(','),
-    maxResults: parseInt($widget.data('maxresults') || '100'),
-    itemsPerPage: $widget.data('itemsperpage'),
-    sortOrder: $widget.data('sortorder'),
-    query: $widget.data('query'),
-    collectionId: $widget.data('collectionid'),
-    sizeCols: sizeCols
-  };
-
-  // run the search for the set of resources to show
-  var resources = buildResourceList(opts);
-
-  if (isFlow) {
-    drawResourcesFlowWidget($widget, opts, resources);
-  }
-}
-
-
-function drawResourcesFlowWidget($widget, opts, resources) {
-  $widget.empty();
-  var cardSizes = opts.cardSizes || ['4x3'];
-
-  for (var i = 0; i < resources.length; i++) {
-    var resource = resources[i];
-
-    var cardSize = i >= cardSizes.length ? cardSizes[cardSizes.length - 1] : cardSizes[i];
-    cardSize = cardSize.replace(/^\s+|\s+$/,'');
-
-    var $card = $('<a>')
-        .addClass('resource-card resource-card-' + cardSize + ' resource-card-' + resource.type)
-        .attr('href', resource.url);
-
-    $('<img>')
-        .addClass('photo')
-        .attr('src', resource.image || '')
-        .appendTo($card);
-
-    var subtitle = resource.type;
-    if (resource.timestamp) {
-      var d = new Date(resource.timestamp);
-      // TODO: localize, humanize
-      subtitle = (1 + d.getMonth()) + '/' + d.getDate() + '/' + d.getFullYear() + ' on ' + subtitle;
-    }
-
-    $('<div>')
-        .addClass('resource-card-text')
-        .append($('<div>').addClass('icon'))
-        .append($('<div>').addClass('title').text(resource.title))
-        .append($('<div>').addClass('subtitle').text(subtitle))
-        .append($('<div>').addClass('abstract').text(resource.summary))
-        .appendTo($card);
-
-    $card.appendTo($widget);
-  }
-
-  $widget.find('.resource-card .photo').each(function() {
-    var src = $(this).attr('src');
-    if (!src) {
-      $(this).parents('.resource-card').addClass('nophoto');
-      $(this).replaceWith($('<div>')
-          .addClass('photo'));
-    } else {
-      $(this).replaceWith($('<div>')
-          .addClass('photo')
-          .css('background-image', 'url(' + $(this).attr('src') + ')'));
-    }
-  });
-}
-
-
-function buildResourceList(opts) {
-  var maxResults = opts.maxResults || 100;
-
-  switch (opts.source) {
-    case 'query':
-      var query = opts.query || '';
-      var expressions = parseResourceQuery(query);
-      var alreadyAddedResources = {};
-      var allResources = [];
-      for (var i = 0; i < expressions.length; i++) {
-        var clauses = expressions[i];
-
-        // build initial set of resources from first clause
-        var firstClause = clauses[0];
-        var resources = [];
-        switch (firstClause.attr) {
-          case 'type':
-            resources = ALL_RESOURCES_BY_TYPE[firstClause.value];
-            break;
-          case 'lang':
-            resources = ALL_RESOURCES_BY_LANG[firstClause.value];
-            break;
-          case 'tag':
-            resources = ALL_RESOURCES_BY_TAG[firstClause.value];
-            break;
-        }
-        resources = resources || [];
-
-        // use additional clauses to filter corpus
-        if (clauses.length > 1) {
-          var otherClauses = clauses.slice(1);
-          resources = resources.filter(getResourceMatchesClausesFilter(otherClauses));
-        }
-
-        // filter out resources already added
-        if (i > 1) {
-          resources = resources.filter(getResourceNotAlreadyAddedFilter(alreadyAddedResources));
-        }
-
-        allResources = allResources.concat(resources);
-        if (allResources.length > maxResults) {
-          break;
-        }
-      }
-      if (opts.sortOrder) {
-        var attr = opts.sortOrder;
-        var desc = attr.charAt(0) == '-';
-        if (desc) {
-          attr = attr.substring(1);
-        }
-        allResources = allResources.sort(function(x,y) {
-          return (desc ? -1 : 1) * (parseInt(x[attr], 10) - parseInt(y[attr], 10));
-        });
-      }
-      return allResources.slice(0, maxResults);
-
-    case 'related':
-      // TODO
-      break;
-
-    case 'collection':
-      // TODO
-      break;
-  }
-}
-
-
-function getResourceNotAlreadyAddedFilter(addedResources) {
-  return function(x) {
-    return !!addedResources[x];
-  };
-}
-
-
-function getResourceMatchesClausesFilter(clauses) {
-  return function(x) {
-    return doesResourceMatchClauses(x, clauses);
-  };
-}
-
-
-function doesResourceMatchClauses(resource, clauses) {
-  for (var i = 0; i < clauses.length; i++) {
-    var map;
-    switch (clauses[i].attr) {
-      case 'type':
-        map = IS_RESOURCE_OF_TYPE[clauses[i].value];
-        break;
-      case 'lang':
-        map = IS_RESOURCE_IN_LANG[clauses[i].value];
-        break;
-      case 'tag':
-        map = IS_RESOURCE_TAGGED[clauses[i].value];
-        break;
-    }
-
-    if (!map || (!!clauses[i].negative ? map[resource.index] : !map[resource.index])) {
-      return false;
-    }
-  }
-  return true;
-}
-
-
-function parseResourceQuery(query) {
-  // Parse query into array of expressions (expression e.g. 'tag:foo + type:video')
-  var expressions = [];
-  var expressionStrs = query.split(',') || [];
-  for (var i = 0; i < expressionStrs.length; i++) {
-    var expr = expressionStrs[i] || '';
-
-    // Break expression into clauses (clause e.g. 'tag:foo')
-    var clauses = [];
-    var clauseStrs = expr.split(/(?=[\+\-])/);
-    for (var j = 0; j < clauseStrs.length; j++) {
-      var clauseStr = clauseStrs[j] || '';
-
-      // Get attribute and value from clause (e.g. attribute='tag', value='foo')
-      var parts = clauseStr.split(':');
-      var clause = {};
-
-      clause.attr = parts[0].replace(/\s+/g,'');
-      if (clause.attr) {
-        if (clause.attr.charAt(0) == '+') {
-          clause.attr = clause.attr.substring(1);
-        } else if (clause.attr.charAt(0) == '-') {
-          clause.negative = true;
-          clause.attr = clause.attr.substring(1);
-        }
-      }
-
-      if (parts.length > 1) {
-        clause.value = parts[1].replace(/\s+/g,'');
-      }
-
-      clauses.push(clause);
-    }
-
-    if (!clauses.length) {
-      continue;
-    }
-
-    expressions.push(clauses);
-  }
-
-  return expressions;
-}
-
diff --git a/tools/droiddoc/templates-sdk/components/masthead.cs b/tools/droiddoc/templates-sdk/components/masthead.cs
index beead52..d0ff64d 100644
--- a/tools/droiddoc/templates-sdk/components/masthead.cs
+++ b/tools/droiddoc/templates-sdk/components/masthead.cs
@@ -3,228 +3,129 @@
   <?cs call:wear_masthead() ?>
 <?cs else ?>
 <a name="top"></a>
-<?cs if:!devsite ?><?cs # leave out the global header for devsite; it's in devsite template ?>
-    <!-- Header -->
+<?cs if:!devsite ?><?cs # leave out the global header for devsite; it is in devsite template ?>
+  <!-- Header -->
+  <div id="header-wrapper">
     <div id="header">
-        <div class="wrap" id="header-wrap">
-          <div class="col-3 logo">
+      <div class="wrap" id="header-wrap">
+        <div class="col-3 logo">
           <a href="<?cs var:toroot ?>index.html">
             <img src="<?cs var:toroot ?>assets/images/dac_logo.png"
                 srcset="<?cs var:toroot ?>assets/images/dac_logo@2x.png 2x"
                 width="123" height="25" alt="Android Developers" />
           </a>
           <div class="btn-quicknav" id="btn-quicknav">
-          	<a href="#" class="arrow-inactive">Quicknav</a>
-			      <a href="#" class="arrow-active">Quicknav</a>
+            <a href="#" class="arrow-inactive">Quicknav</a>
+            <a href="#" class="arrow-active">Quicknav</a>
           </div>
-          </div>
-            <ul class="nav-x col-9">
-                <li class="design">
-                  <a href="<?cs var:toroot ?>design/index.html"
-                  zh-tw-lang="設計"
-                  zh-cn-lang="设计"
-                  ru-lang="Проектирование"
-                  ko-lang="디자인"
-                  ja-lang="設計"
-                  es-lang="Diseñar"               
-                  >Design</a></li>
-                <li class="develop"><a href="<?cs var:toroot ?>develop/index.html"
-                  zh-tw-lang="開發"
-                  zh-cn-lang="开发"
-                  ru-lang="Разработка"
-                  ko-lang="개발"
-                  ja-lang="開発"
-                  es-lang="Desarrollar"               
-                  >Develop</a></li>
-                <li class="distribute last"><a href="<?cs var:toroot ?>distribute/index.html"
-                  zh-tw-lang="發佈"
-                  zh-cn-lang="分发"
-                  ru-lang="Распространение"
-                  ko-lang="배포"
-                  ja-lang="配布"
-                  es-lang="Distribuir"               
-                  >Distribute</a></li>
-            </ul>
-            
-            <!-- New Search -->
-            <div class="menu-container">
-            <div class="moremenu">
-    <div id="more-btn"></div>
-  </div>
-  <div class="morehover" id="moremenu">
-    <div class="top"></div>
-    <div class="mid">
-      <div class="header">Links</div>
-      <ul>
-        <li><a href="https://play.google.com/apps/publish/">Google Play Developer Console</a></li>
-        <li><a href="http://android-developers.blogspot.com/">Android Developers Blog</a></li>
-        <li><a href="<?cs var:toroot ?>about/index.html">About Android</a></li>
-      </ul>
-      <div class="header">Android Sites</div>
-      <ul>
-        <li><a href="http://www.android.com">Android.com</a></li>
-        <li class="active"><a>Android Developers</a></li>
-        <li><a href="http://source.android.com">Android Open Source Project</a></li>
-      </ul>
-      
-      <?cs # Include language switcher only in online docs ?>
-      <?cs if:android.whichdoc == "online" ?>
-        <div class="header">Language</div>
-          <div id="language" class="locales">
-            <select name="language" onChange="changeLangPref(this.value, true)">
-                <option value="en">English</option>
-                <option value="es">Español</option>
-                <option value="ja">日本語</option>
-                <option value="ko">한국어</option>
-                <option value="ru">Русский</option>
-                <option value="zh-cn">中文 (中国)</option>
-                <option value="zh-tw">中文 (台灣)</option>
-            </select>
-          </div>
-        <script type="text/javascript">
-          <!--
-          loadLangPref();
-            //-->
-        </script>
-      <?cs /if ?>
-      <?cs # End of lang switcher ?>
-
-
-      <br class="clearfix" />
-    </div>
-    <div class="bottom"></div>
-  </div>
-  <div class="search" id="search-container">
-    <div class="search-inner">
-      <div id="search-btn"></div>
-      <div class="left"></div>
-      <form onsubmit="return submit_search()">
-        <input id="search_autocomplete" type="text" value="" autocomplete="off" name="q"
-onfocus="search_focus_changed(this, true)" onblur="search_focus_changed(this, false)"
-onkeydown="return search_changed(event, true, '<?cs var:toroot ?>')" 
-onkeyup="return search_changed(event, false, '<?cs var:toroot ?>')" />
-      </form>
-      <div class="right"></div>
-        <a class="close hide">close</a>
-        <div class="left"></div>
-        <div class="right"></div>
-    </div>
-  </div>
-
-  <div class="search_filtered_wrapper reference">
-    <div class="suggest-card reference no-display">
-      <ul class="search_filtered">
-      </ul>
-    </div>
-  </div>
-
-  <div class="search_filtered_wrapper docs">
-    <div class="suggest-card dummy no-display">&nbsp;</div>
-    <div class="suggest-card develop no-display">
-      <ul class="search_filtered">
-      </ul>
-      <div class="child-card guides no-display">
-      </div>
-      <div class="child-card training no-display">
-      </div>
-      <div class="child-card samples no-display">
-      </div>
-    </div>
-    <div class="suggest-card design no-display">
-      <ul class="search_filtered">
-      </ul>
-    </div>
-    <div class="suggest-card distribute no-display">
-      <ul class="search_filtered">
-      </ul>
-    </div>
-  </div>
-
-  </div>
-  <!-- /New Search>
-          
-          
-          <!-- Expanded quicknav -->
-           <div id="quicknav" class="col-9">
-                <ul>
-                    <li class="design">
-                      <ul>
-                        <li><a href="<?cs var:toroot ?>design/index.html">Get Started</a></li>
-                        <li><a href="<?cs var:toroot ?>design/style/index.html">Style</a></li>
-                        <li><a href="<?cs var:toroot ?>design/patterns/index.html">Patterns</a></li>
-                        <li><a href="<?cs var:toroot ?>design/building-blocks/index.html">Building Blocks</a></li>
-                        <li><a href="<?cs var:toroot ?>design/downloads/index.html">Downloads</a></li>
-                        <li><a href="<?cs var:toroot ?>design/videos/index.html">Videos</a></li>
-                      </ul>
-                    </li>
-                    <li class="develop">
-                      <ul>
-                        <li><a href="<?cs var:toroot ?>training/index.html"
-                          zh-tw-lang="訓練課程"
-                          zh-cn-lang="培训"
-                          ru-lang="Курсы"
-                          ko-lang="교육"
-                          ja-lang="トレーニング"
-                          es-lang="Capacitación"               
-                          >Training</a></li>
-                        <li><a href="<?cs var:toroot ?>guide/index.html"
-                          zh-tw-lang="API 指南"
-                          zh-cn-lang="API 指南"
-                          ru-lang="Руководства по API"
-                          ko-lang="API 가이드"
-                          ja-lang="API ガイド"
-                          es-lang="Guías de la API"               
-                          >API Guides</a></li>
-                        <li><a href="<?cs var:toroot ?>reference/packages.html"
-                          zh-tw-lang="參考資源"
-                          zh-cn-lang="参考"
-                          ru-lang="Справочник"
-                          ko-lang="참조문서"
-                          ja-lang="リファレンス"
-                          es-lang="Referencia"               
-                          >Reference</a></li>
-                        <li><a href="<?cs var:toroot ?>tools/index.html"
-                          zh-tw-lang="相關工具"
-                          zh-cn-lang="工具"
-                          ru-lang="Инструменты"
-                          ko-lang="도구"
-                          ja-lang="ツール"
-                          es-lang="Herramientas"               
-                          >Tools</a>
-                          <ul><li><a href="<?cs var:toroot ?>sdk/index.html">Get the SDK</a></li></ul>
-                        </li>
-                        <li><a href="<?cs var:toroot ?>google/index.html">Google Services</a>
-                        </li>
-                        <?cs if:android.hasSamples ?>
-                          <li><a href="<?cs var:toroot ?>samples/index.html">Samples</a>
-                          </li>
-                        <?cs /if ?>
-                      </ul>
-                    </li>
-                    <li class="distribute last">
-                      <ul>
-                        <li><a href="<?cs var:toroot ?>distribute/index.html">Google Play</a></li>
-                        <li><a href="<?cs var:toroot ?>distribute/googleplay/publish/index.html">Publishing</a></li>
-                        <li><a href="<?cs var:toroot ?>distribute/googleplay/promote/index.html">Promoting</a></li>
-                        <li><a href="<?cs var:toroot ?>distribute/googleplay/quality/index.html">App Quality</a></li>
-                        <li><a href="<?cs var:toroot ?>distribute/googleplay/spotlight/index.html">Spotlight</a></li>
-                        <li><a href="<?cs var:toroot ?>distribute/open.html">Open Distribution</a></li>
-                      </ul>
-                    </li>
-                </ul>
-          </div>
-          <!-- /Expanded quicknav -->
         </div>
-    </div>
-    <!-- /Header -->
-    
-    
-  <div id="searchResults" class="wrap" style="display:none;">
-          <h2 id="searchTitle">Results</h2>
-          <div id="leftSearchControl" class="search-control">Loading...</div>
-  </div>
-    
-    
+        <ul class="nav-x col-9">
+            <li class="design">
+              <a href="<?cs var:toroot ?>design/index.html"
+              zh-tw-lang="設計"
+              zh-cn-lang="设计"
+              ru-lang="Проектирование"
+              ko-lang="디자인"
+              ja-lang="設計"
+              es-lang="Diseñar"
+              >Design</a></li>
+            <li class="develop"><a href="<?cs var:toroot ?>develop/index.html"
+              zh-tw-lang="開發"
+              zh-cn-lang="开发"
+              ru-lang="Разработка"
+              ko-lang="개발"
+              ja-lang="開発"
+              es-lang="Desarrollar"
+              >Develop</a></li>
+            <li class="distribute last"><a href="<?cs var:toroot ?>distribute/<?cs
+              if:android.whichdoc == "offline" ?>googleplay/<?cs /if ?>index.html"
+              zh-tw-lang="發佈"
+              zh-cn-lang="分发"
+              ru-lang="Распространение"
+              ko-lang="배포"
+              ja-lang="配布"
+              es-lang="Distribuir"
+              >Distribute</a></li>
+        </ul>
+
+
+        <?cs # ADD SEARCH AND MENU ?>
+        <?cs call:header_search_widget() ?>
+
+
+        <!-- Expanded quicknav -->
+        <div id="quicknav" class="col-9">
+          <ul>
+            <li class="design">
+              <ul>
+                <li><a href="<?cs var:toroot ?>design/index.html">Get Started</a></li>
+                <li><a href="<?cs var:toroot ?>design/style/index.html">Style</a></li>
+                <li><a href="<?cs var:toroot ?>design/patterns/index.html">Patterns</a></li>
+                <li><a href="<?cs var:toroot ?>design/building-blocks/index.html">Building Blocks</a></li>
+                <li><a href="<?cs var:toroot ?>design/downloads/index.html">Downloads</a></li>
+                <li><a href="<?cs var:toroot ?>design/videos/index.html">Videos</a></li>
+              </ul>
+            </li>
+            <li class="develop">
+              <ul>
+                <li><a href="<?cs var:toroot ?>training/index.html"
+                  zh-tw-lang="訓練課程"
+                  zh-cn-lang="培训"
+                  ru-lang="Курсы"
+                  ko-lang="교육"
+                  ja-lang="トレーニング"
+                  es-lang="Capacitación"
+                  >Training</a></li>
+                <li><a href="<?cs var:toroot ?>guide/index.html"
+                  zh-tw-lang="API 指南"
+                  zh-cn-lang="API 指南"
+                  ru-lang="Руководства по API"
+                  ko-lang="API 가이드"
+                  ja-lang="API ガイド"
+                  es-lang="Guías de la API"
+                  >API Guides</a></li>
+                <li><a href="<?cs var:toroot ?>reference/packages.html"
+                  zh-tw-lang="參考資源"
+                  zh-cn-lang="参考"
+                  ru-lang="Справочник"
+                  ko-lang="참조문서"
+                  ja-lang="リファレンス"
+                  es-lang="Referencia"
+                  >Reference</a></li>
+                <li><a href="<?cs var:toroot ?>tools/index.html"
+                  zh-tw-lang="相關工具"
+                  zh-cn-lang="工具"
+                  ru-lang="Инструменты"
+                  ko-lang="도구"
+                  ja-lang="ツール"
+                  es-lang="Herramientas"
+                  >Tools</a>
+                  <ul><li><a href="<?cs var:toroot ?>sdk/index.html">Get the SDK</a></li></ul>
+                </li>
+                <li><a href="<?cs var:toroot ?>google/index.html">Google Services</a>
+                </li>
+                <?cs if:android.hasSamples ?>
+                  <li><a href="<?cs var:toroot ?>samples/index.html">Samples</a>
+                  </li>
+                <?cs /if ?>
+              </ul>
+            </li>
+            <li class="distribute last">
+              <ul>
+                <li><a href="<?cs var:toroot ?>distribute/googleplay/index.html">Google Play</a></li>
+                <li><a href="<?cs var:toroot ?>distribute/essentials/index.html">Essentials</a></li>
+                <li><a href="<?cs var:toroot ?>distribute/users/index.html">Get Users</a></li>
+                <li><a href="<?cs var:toroot ?>distribute/engage/index.html">Engage &amp; Retain</a></li>
+                <li><a href="<?cs var:toroot ?>distribute/monetize/index.html">Monetize</a></li>
+                <li><a href="<?cs var:toroot ?>distribute/tools/index.html">Tools &amp; Reference</a></li>
+                <li><a href="<?cs var:toroot ?>distribute/stories/index.html">Developer Stories</a></li>
+              </ul>
+            </li>
+          </ul>
+        </div><!-- /Expanded quicknav -->
+      </div><!-- end header-wrap.wrap -->
+    </div><!-- end header -->
+
   <?cs if:training || guide || reference || tools || develop || google || samples ?>
     <!-- Secondary x-nav -->
     <div id="nav-x">
@@ -236,7 +137,7 @@
                   ru-lang="Курсы"
                   ko-lang="교육"
                   ja-lang="トレーニング"
-                  es-lang="Capacitación"               
+                  es-lang="Capacitación"
                   >Training</a></li>
                 <li class="guide"><a href="<?cs var:toroot ?>guide/index.html"
                   zh-tw-lang="API 指南"
@@ -244,7 +145,7 @@
                   ru-lang="Руководства по API"
                   ko-lang="API 가이드"
                   ja-lang="API ガイド"
-                  es-lang="Guías de la API"               
+                  es-lang="Guías de la API"
                   >API Guides</a></li>
                 <li class="reference"><a href="<?cs var:toroot ?>reference/packages.html"
                   zh-tw-lang="參考資源"
@@ -252,7 +153,7 @@
                   ru-lang="Справочник"
                   ko-lang="참조문서"
                   ja-lang="リファレンス"
-                  es-lang="Referencia"               
+                  es-lang="Referencia"
                   >Reference</a></li>
                 <li class="tools"><a href="<?cs var:toroot ?>tools/index.html"
                   zh-tw-lang="相關工具"
@@ -272,144 +173,98 @@
                 <?cs /if ?>
             </ul>
         </div>
-        
     </div>
     <!-- /Sendondary x-nav -->
+
+  <?cs elif:distribute || googleplay || essentials || users || engage || monetize || disttools || stories ?>
+    <!-- Secondary distribute x-nav -->
+    <div id="nav-x">
+        <div class="wrap">
+            <ul class="nav-x distribute">
+                <li class="googleplay"><a href="<?cs var:toroot ?>distribute/googleplay/index.html"
+                  >Google Play</a></li>
+                <li class="essentials"><a href="<?cs var:toroot ?>distribute/essentials/index.html"
+                  >Essentials</a></li>
+                <li class="users"><a href="<?cs var:toroot ?>distribute/users/index.html"
+                  >Get Users</a></li>
+                <li class="engage"><a href="<?cs var:toroot ?>distribute/engage/index.html"
+                  >Engage &amp; Retain</a></li>
+                <li class="monetize"><a href="<?cs var:toroot ?>distribute/monetize/index.html"
+                  >Monetize</a>
+                </li>
+                <li class="disttools"><a href="<?cs var:toroot ?>distribute/tools/index.html"
+                  >Tools</a>
+                </li>
+                <li class="stories"><a href="<?cs var:toroot ?>distribute/stories/index.html"
+                  >Stories</a>
+                </li>
+            </ul>
+            <a href="https://play.google.com/apps/publish/" class="developer-console-btn">Developer Console</a>
+        </div> <!-- /Secondary distribute x-nav -->
+    </div>
   <?cs /if ?>
 
-<?cs /if ?>
-<?cs # end if/else !devsite ?>
+    <div id="searchResults" class="wrap" style="display:none;">
+      <h2 id="searchTitle">Results</h2>
+      <div id="leftSearchControl" class="search-control">Loading...</div>
+    </div>
+  </div> <!--end header-wrapper -->
 
-<?cs /if ?><?cs # end if/else wear ?>
-  <?cs
+  <div id="sticky-header">
+    <div>
+      <a class="logo" href="#top"></a>
+      <a class="top" href="#top"></a>
+      <ul class="breadcrumb">
+        <?cs # More <li> elements added here with javascript ?>
+        <?cs if:!section.landing ?><li class="current"><?cs var:page.title ?></li><?cs
+        /if ?>
+      </ul>
+    </div>
+  </div>
+
+<?cs /if ?><?cs # end if/else !devsite ?>
+<?cs /if ?><?cs # end if/else wear ?><?cs
 /def ?>
 
-
 <?cs def:wear_masthead() ?>
 <a name="top"></a>
 
-    <!-- Header -->
-    <div id="header">
-        <div class="wrap" id="header-wrap">
-          <div class="col-3 logo-wear">
-          <a href="<?cs var:toroot ?>wear/index.html">
-            <img src="<?cs var:toroot ?>wear/images/android-wear.png" height="16" alt="Android Wear" />
-          </a>
-          </div>
-
-
-        <div class="col-8" style="margin:0"><h1 style="margin:1px 0 0 20px;padding:0;line-height:16px;
-  color:#666;font-weight:100;font-size:24px;">Developer Preview</h1></div>
-
-
-          <!-- New Search -->
-          <div class="menu-container">
-            <div class="moremenu">
-          <div id="more-btn"></div>
-	    </div>
-  <div class="morehover" id="moremenu">
-    <div class="top"></div>
-    <div class="mid">
-      <div class="header">Links</div>
-      <ul>
-        <li><a href="https://play.google.com/apps/publish/">Google Play Developer Console</a></li>
-        <li><a href="http://android-developers.blogspot.com/">Android Developers Blog</a></li>
-        <li><a href="<?cs var:toroot ?>about/index.html">About Android</a></li>
-      </ul>
-      <div class="header">Android Sites</div>
-      <ul>
-        <li><a href="http://www.android.com">Android.com</a></li>
-        <li class="active"><a>Android Developers</a></li>
-        <li><a href="http://source.android.com">Android Open Source Project</a></li>
-      </ul>
-
-      <?cs # Include language switcher only in online docs ?>
-      <?cs if:android.whichdoc == "online" ?>
-        <div class="header">Language</div>
-          <div id="language" class="locales">
-            <select name="language" onChange="changeLangPref(this.value, true)">
-                <option value="en">English</option>
-                <option value="es">Español</option>
-                <option value="ja">日本語</option>
-                <option value="ko">한국어</option>
-                <option value="ru">Русский</option>
-                <option value="zh-cn">中文 (中国)</option>
-                <option value="zh-tw">中文 (台灣)</option>
-            </select>
-          </div>
-        <script type="text/javascript">
-          <!--
-          loadLangPref();
-            //-->
-        </script>
-      <?cs /if ?>
-      <?cs # End of lang switcher ?>
-
-
-      <br class="clearfix" />
-    </div><!-- end mid -->
-    <div class="bottom"></div>
-  </div><!-- end morehover -->
-
-  <div class="search" id="search-container">
-    <div class="search-inner">
-      <div id="search-btn"></div>
-      <div class="left"></div>
-      <form onsubmit="return submit_search()">
-        <input id="search_autocomplete" type="text" value="" autocomplete="off" name="q"
-onfocus="search_focus_changed(this, true)" onblur="search_focus_changed(this, false)"
-onkeydown="return search_changed(event, true, '<?cs var:toroot ?>')"
-onkeyup="return search_changed(event, false, '<?cs var:toroot ?>')" />
-      </form>
-      <div class="right"></div>
-        <a class="close hide">close</a>
-        <div class="left"></div>
-        <div class="right"></div>
-    </div>
-  </div><!--  end search -->
-
-  <div class="search_filtered_wrapper reference">
-    <div class="suggest-card reference no-display">
-      <ul class="search_filtered">
-      </ul>
-    </div>
-  </div>
-
-  <div class="search_filtered_wrapper docs">
-    <div class="suggest-card dummy no-display">&nbsp;</div>
-    <div class="suggest-card develop no-display">
-      <ul class="search_filtered">
-      </ul>
-      <div class="child-card guides no-display">
+<!-- Header -->
+<div id="header-wrapper">
+  <div id="header">
+    <div class="wrap" id="header-wrap">
+      <div class="col_3 logo wear-logo">
+        <a href="<?cs var:toroot ?>wear/index.html">
+          <img src="<?cs var:toroot ?>wear/images/android-wear.png" height="16" alt="Android Wear" />
+        </a>
       </div>
-      <div class="child-card training no-display">
-      </div>
-      <div class="child-card samples no-display">
-      </div>
-    </div>
-    <div class="suggest-card design no-display">
-      <ul class="search_filtered">
-      </ul>
-    </div>
-    <div class="suggest-card distribute no-display">
-      <ul class="search_filtered">
-      </ul>
-    </div>
-  </div><!-- end search_filtered_wrapper -->
+      <div class="col-8" style="margin:0"><h1 style="margin:1px 0 0 20px;padding:0;line-height:16px;
+color:#666;font-weight:100;font-size:24px;">Developer Preview</h1></div>
 
-  </div>
-  <!-- end menu_container -->
+      <?cs # ADD SEARCH AND MENU ?>
+      <?cs call:header_search_widget() ?>
 
-
-        </div><!-- end header-wrap -->
-    </div>
-    <!-- /Header -->
+    </div><!-- end header-wrap -->
+  </div><!-- /Header -->
 
 
   <div id="searchResults" class="wrap" style="display:none;">
           <h2 id="searchTitle">Results</h2>
           <div id="leftSearchControl" class="search-control">Loading...</div>
   </div>
+</div> <!--end header-wrapper -->
 
-  <?cs 
+<div id="sticky-header">
+  <div>
+    <a class="logo" href="#top"></a>
+    <a class="top" href="#top"></a>
+    <ul class="breadcrumb">
+      <?cs # More <li> elements added here with javascript ?>
+      <?cs if:!section.landing ?><li class="current"><?cs var:page.title ?></li><?cs
+      /if ?>
+    </ul>
+  </div>
+</div>
+
+  <?cs
 /def ?>
diff --git a/tools/droiddoc/templates-sdk/customizations.cs b/tools/droiddoc/templates-sdk/customizations.cs
index 69a0d0f..d9330db 100644
--- a/tools/droiddoc/templates-sdk/customizations.cs
+++ b/tools/droiddoc/templates-sdk/customizations.cs
@@ -7,7 +7,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 <?cs 
         include:"../../../../frameworks/base/docs/html/sdk/sdk_toc.cs" ?>
@@ -15,33 +14,16 @@
 
       </div>
     </div> <!-- end side-nav -->
-<?cs /def ?>
-<?cs 
-def:resources_tab_nav() ?>
+<?cs /def ?><?cs
+
+def:no_nav() ?>
   <div class="wrap clearfix" id="body-content">
-    <a
-    <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
-      <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
+<?cs /def ?><?cs
 
-<?cs 
-        include:"../../../../frameworks/base/docs/html/resources/resources_toc.cs" ?>
-
-
-      </div>
-    </div> <!-- end side-nav -->
-    <script>
-      $(document).ready(function() {
-        scrollIntoView("devdoc-nav");
-        });
-    </script>
-<?cs /def ?>
-<?cs
 def:tools_nav() ?>
   <div class="wrap clearfix" id="body-content">
     <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 <?cs 
         include:"../../../../frameworks/base/docs/html/tools/tools_toc.cs" ?>
         
@@ -59,7 +41,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 
 <?cs 
@@ -73,14 +54,110 @@
         scrollIntoView("devdoc-nav");
         });
     </script>
-<?cs /def ?>
-<?cs 
+<?cs /def ?><?cs
+
+def:googleplay_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/googleplay/googleplay_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
+def:essentials_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/essentials/essentials_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
+def:users_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/users/users_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
+def:engage_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/engage/engage_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
+def:monetize_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/monetize/monetize_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
+def:disttools_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/tools/disttools_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
+def:stories_nav() ?>
+  <div class="wrap clearfix" id="body-content">
+    <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
+      <div id="devdoc-nav" class="scroll-pane">
+<?cs include:"../../../../frameworks/base/docs/html/distribute/stories/stories_toc.cs" ?>
+      </div>
+    </div> <!-- end side-nav -->
+    <script>
+      $(document).ready(function() {
+        scrollIntoView("devdoc-nav");
+        });
+    </script>
+<?cs /def ?><?cs
+
 def:guide_nav() ?>
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
-
 
 <?cs 
         include:"../../../../frameworks/base/docs/html/guide/guide_toc.cs" ?>
@@ -99,7 +176,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 
 <?cs
@@ -119,7 +195,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 <?cs
         include:"../../../../frameworks/base/docs/html/distribute/distribute_toc.cs" ?>
@@ -139,7 +214,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 <?cs
         include:"../../../../frameworks/base/docs/html/samples/samples_toc.cs" ?>
@@ -159,7 +233,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 <?cs
         include:"../../../../frameworks/base/docs/html/google/google_toc.cs" ?>
@@ -183,7 +256,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-3" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 <?cs
         include:"../../../../frameworks/base/docs/html/about/about_toc.cs" ?>
@@ -204,7 +276,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav" class="scroll-pane">
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
 
 <?cs
         include:"../../../../frameworks/base/docs/html/wear/wear_toc.cs" ?>
@@ -227,8 +298,6 @@
   <div class="wrap clearfix" id="body-content">
     <div class="col-4" id="side-nav" itemscope itemtype="http://schema.org/SiteNavigationElement">
       <div id="devdoc-nav">
-
-<a class="totop" href="#top" data-g-event="left-nav-top">to top</a>
       <div id="api-nav-header">
         <div id="api-level-toggle">
           <label for="apiLevelCheckbox" class="disabled"
@@ -331,10 +400,111 @@
     <?cs 
 /def ?>
 
+
+<?cs
+def:header_search_widget() ?>
+<div class="menu-container">
+  <div class="moremenu">
+    <div id="more-btn"></div>
+  </div>
+  <div class="morehover" id="moremenu">
+    <div class="top"></div>
+    <div class="mid">
+      <div class="header">Links</div>
+      <ul>
+        <li><a href="https://play.google.com/apps/publish/" target="_googleplay">Google Play Developer Console</a></li>
+        <li><a href="http://android-developers.blogspot.com/">Android Developers Blog</a></li>
+        <li><a href="<?cs var:toroot ?>about/index.html">About Android</a></li>
+      </ul>
+      <div class="header">Android Sites</div>
+      <ul>
+        <li><a href="http://www.android.com">Android.com</a></li>
+        <li class="active"><a>Android Developers</a></li>
+        <li><a href="http://source.android.com">Android Open Source Project</a></li>
+      </ul>
+
+      <?cs # Include language switcher only in online docs ?>
+      <?cs if:android.whichdoc == "online" ?>
+        <div class="header">Language</div>
+          <div id="language" class="locales">
+            <select name="language" onChange="changeLangPref(this.value, true)">
+                <option value="en">English</option>
+                <option value="es">Español</option>
+                <option value="ja">日本語</option>
+                <option value="ko">한국어</option>
+                <option value="ru">Русский</option>
+                <option value="zh-cn">中文 (中国)</option>
+                <option value="zh-tw">中文 (台灣)</option>
+            </select>
+          </div>
+        <script type="text/javascript">
+          <!--
+          loadLangPref();
+            //-->
+        </script>
+      <?cs /if ?>
+      <?cs # End of lang switcher ?>
+      <br class="clearfix" />
+    </div><!-- end 'mid' -->
+    <div class="bottom"></div>
+  </div><!-- end 'moremenu' -->
+
+  <div class="search" id="search-container">
+    <div class="search-inner">
+      <div id="search-btn"></div>
+      <div class="left"></div>
+      <form onsubmit="return submit_search()">
+        <input id="search_autocomplete" type="text" value="" autocomplete="off" name="q"
+          onfocus="search_focus_changed(this, true)" onblur="search_focus_changed(this, false)"
+          onkeydown="return search_changed(event, true, '<?cs var:toroot ?>')"
+          onkeyup="return search_changed(event, false, '<?cs var:toroot ?>')" />
+      </form>
+      <div class="right"></div>
+      <a class="close hide">close</a>
+      <div class="left"></div>
+      <div class="right"></div>
+    </div><!-- end search-inner -->
+  </div><!-- end search-container -->
+
+  <div class="search_filtered_wrapper reference">
+    <div class="suggest-card reference no-display">
+      <ul class="search_filtered">
+      </ul>
+    </div>
+  </div>
+
+  <div class="search_filtered_wrapper docs">
+    <div class="suggest-card dummy no-display">&nbsp;</div>
+    <div class="suggest-card develop no-display">
+      <ul class="search_filtered">
+      </ul>
+      <div class="child-card guides no-display">
+      </div>
+      <div class="child-card training no-display">
+      </div>
+      <div class="child-card samples no-display">
+      </div>
+    </div>
+    <div class="suggest-card design no-display">
+      <ul class="search_filtered">
+      </ul>
+    </div>
+    <div class="suggest-card distribute no-display">
+      <ul class="search_filtered">
+      </ul>
+    </div>
+  </div>
+</div><!-- end menu-container (search and menu widget) -->
+<?cs /def ?>
+
+
+
 <?cs 
 def:custom_left_nav() ?><?cs
-  if:fullpage ?><?cs 
-    call:fullpage() ?><?cs 
+  if:fullpage ?><?cs
+    call:fullpage() ?><?cs
+  elif:nonavpage ?><?cs
+    call:no_nav() ?><?cs
   elif:guide ?><?cs 
     call:guide_nav() ?><?cs 
   elif:design ?><?cs
@@ -347,17 +517,31 @@
     call:google_nav() ?><?cs 
   elif:samples ?><?cs
     call:samples_nav() ?><?cs
-  elif:more ?><?cs 
-    call:dist_more_nav() ?><?cs
   elif:distribute ?><?cs 
-    call:distribute_nav() ?><?cs 
-  elif:about ?><?cs 
+    if:googleplay ?><?cs
+      call:googleplay_nav() ?><?cs
+    elif:essentials ?><?cs
+      call:essentials_nav() ?><?cs
+    elif:users ?><?cs
+      call:users_nav() ?><?cs
+    elif:engage ?><?cs
+      call:engage_nav() ?><?cs
+    elif:monetize ?><?cs
+      call:monetize_nav() ?><?cs
+    elif:disttools ?><?cs
+      call:disttools_nav() ?><?cs
+    elif:stories ?><?cs
+      call:stories_nav() ?><?cs
+    /if ?><?cs
+  elif:about ?><?cs
     call:about_nav() ?><?cs
+  elif:distribute ?><?cs
+    call:distribute_nav() ?><?cs
   elif:wear ?><?cs
     call:wear_nav() ?><?cs
-  else ?><?cs 
-    call:default_left_nav() ?> <?cs 
-  /if ?><?cs 
+  else ?><?cs
+    call:default_left_nav() ?> <?cs
+  /if ?><?cs
 /def ?>
 
 <?cs # appears at the bottom of every page ?><?cs 
diff --git a/tools/droiddoc/templates-sdk/docpage.cs b/tools/droiddoc/templates-sdk/docpage.cs
index ea462c9..7eae405 100644
--- a/tools/droiddoc/templates-sdk/docpage.cs
+++ b/tools/droiddoc/templates-sdk/docpage.cs
@@ -2,19 +2,36 @@
 <?cs include:"macros.cs" ?>
 <html<?cs if:devsite ?> devsite<?cs /if ?>>
 <?cs include:"head_tag.cs" ?>
-<body class="gc-documentation <?cs if:(google || reference.gms || reference.gcm) ?>google<?cs /if ?>
-  <?cs if:(guide||develop||training||reference||tools||sdk||samples) ?>develop<?cs if:guide ?> guide<?cs /if ?><?cs if:samples ?> samples<?cs /if ?><?cs
+<body class="gc-documentation 
+
+<?cs
+if:(google || reference.gms || reference.gcm) ?>google<?cs /if ?><?cs
+  if:(guide||develop||training||reference||tools||sdk||samples) ?>develop<?cs
+    if:guide ?> guide<?cs /if ?><?cs
+    if:samples ?> samples<?cs /if ?><?cs
+  elif:(distribute||googleplay||essentials||users||engage||monetize||disttools||stories)
+    ?>distribute<?cs
+    if:googleplay ?> googleplay<?cs /if ?><?cs
+    if:essentials ?> essentials<?cs /if ?><?cs
+    if:users ?> users<?cs /if ?><?cs
+    if:engage ?> engage<?cs /if ?><?cs
+    if:monetize ?> monetize<?cs /if ?><?cs
+    if:disttools ?> disttools<?cs /if ?><?cs
+    if:stories ?> stories<?cs /if ?><?cs
   elif:about ?>about<?cs
   elif:design ?>design<?cs
-  elif:distribute ?>distribute<?cs
-  /if ?><?cs
-  if:page.trainingcourse ?> trainingcourse<?cs /if ?>" itemscope itemtype="http://schema.org/Article">
-<?cs include:"header.cs" ?>
+/if ?><?cs
+if:page.trainingcourse ?> trainingcourse<?cs
+/if ?>" itemscope itemtype="http://schema.org/Article"><?cs
+include:"header.cs" ?>
 
-<div <?cs if:fullpage
-?>class="fullpage"<?cs elif:design||tools||about||sdk||distribute
-?>class="col-13" id="doc-col"<?cs else
-?>class="col-12" id="doc-col"<?cs /if ?> >
+<div <?cs
+  if:fullpage
+    ?>class="fullpage"<?cs
+  elif:(design||tools||about||sdk||googleplay||essentials||users||monetize||disttools) && !nonavpage
+    ?>class="col-13" id="doc-col"<?cs
+  elif:!nonavpage
+    ?>class="col-12" id="doc-col"<?cs /if ?> >
 
 <?cs if:(design||training||walkthru) && !page.trainingcourse && !page.article ?><?cs # header logic for docs that provide previous/next buttons ?>
   <?cs if:header.hide ?>
@@ -74,6 +91,7 @@
     <?cs /if ?><?cs # end if training ?>
   </div>
   <?cs /if ?>
+
 <?cs elif:samplesProjectIndex ?>
   <div id="api-info-block">
   <div class="sum-details-links">
@@ -83,7 +101,10 @@
   </div><!-- end sum-details-links -->
   </div><!-- end breadcurmb block -->
   <h1 itemprop="name"><?cs var:projectDir ?></h1>
+
 <?cs else ?>
+
+
   <?cs if:(!fullpage && !header.hide) ?>
     <?cs if:page.landing ?><?cs # header logic for docs that are landing pages ?>
       <div class="landing-banner">
@@ -181,8 +202,6 @@
 <?cs include:"footer.cs" ?>
 </div><!-- end doc-content -->
 
-<?cs include:"trailer.cs" ?>
-
 <!-- Start of Tag -->
 <script type="text/javascript">
 var axel = Math.random() + "";
@@ -193,6 +212,15 @@
 <iframe src="https://2507573.fls.doubleclick.net/activityi;src=2507573;type=other026;cat=googl348;ord=1?" width="1" height="1" frameborder="0" style="display:none"></iframe>
 </noscript>
 <!-- End of Tag -->
+
+
+<?cs include:"trailer.cs" ?>
+  <script src="https://developer.android.com/ytblogger_lists_unified.js" type="text/javascript"></script>
+  <script src="<?cs var:toroot ?>jd_lists_unified.js" type="text/javascript"></script>
+  <script src="<?cs var:toroot ?>jd_extras.js" type="text/javascript"></script>
+  <script src="<?cs var:toroot ?>jd_collections.js" type="text/javascript"></script>
+  <script src="<?cs var:toroot ?>jd_tag_helpers.js" type="text/javascript"></script>
+
 </body>
 </html>
 
diff --git a/tools/droiddoc/templates-sdk/head_tag.cs b/tools/droiddoc/templates-sdk/head_tag.cs
index ff07a19..732118f 100644
--- a/tools/droiddoc/templates-sdk/head_tag.cs
+++ b/tools/droiddoc/templates-sdk/head_tag.cs
@@ -31,7 +31,13 @@
 
 <!-- STYLESHEETS -->
 <link rel="stylesheet"
-href="<?cs if:android.whichdoc != 'online' ?>http:<?cs /if ?>//fonts.googleapis.com/css?family=Roboto:light,regular,medium,thin,italic,mediumitalic,bold" title="roboto">
+href="<?cs
+if:android.whichdoc != 'online' ?>http:<?cs
+/if ?>//fonts.googleapis.com/css?family=Roboto+Condensed">
+<link rel="stylesheet" href="<?cs
+if:android.whichdoc != 'online' ?>http:<?cs
+/if ?>//fonts.googleapis.com/css?family=Roboto:light,regular,medium,thin,italic,mediumitalic,bold"
+  title="roboto">
 <link href="<?cs var:toroot ?>assets/css/default.css" rel="stylesheet" type="text/css">
 
 <?cs if:reference && !(reference.gms || reference.gcm || wear) ?>
@@ -58,13 +64,6 @@
 </script>
 <script src="<?cs var:toroot ?>assets/js/docs.js" type="text/javascript"></script>
 
-<!-- RESOURCES LIBRARY -->
-<script src="<?cs if:android.whichdoc != 'online' ?>http:<?cs /if ?>//androiddevdocs-staging.appspot.com/ytblogger_lists_unified.js" type="text/javascript"></script>
-<script src="<?cs var:toroot ?>jd_lists_unified.js" type="text/javascript"></script>
-<script src="<?cs var:toroot ?>assets/js/jd_tag_helpers.js" type="text/javascript"></script>
-<link href="<?cs var:toroot ?>assets/css/resourcecards.css"  rel="stylesheet" type="text/css" />
-<script src="<?cs var:toroot ?>assets/js/resourcecards.js" type="text/javascript"></script>
-
 <script type="text/javascript">
   var _gaq = _gaq || [];
   _gaq.push(['_setAccount', 'UA-5831155-1']);
diff --git a/tools/signapk/SignApk.java b/tools/signapk/SignApk.java
index b247072..e661e50 100644
--- a/tools/signapk/SignApk.java
+++ b/tools/signapk/SignApk.java
@@ -461,24 +461,75 @@
      * reduce variation in the output file and make incremental OTAs
      * more efficient.
      */
-    private static void copyFiles(Manifest manifest,
-                                  JarFile in, JarOutputStream out, long timestamp) throws IOException {
+    private static void copyFiles(Manifest manifest, JarFile in, JarOutputStream out,
+                                  long timestamp, int alignment) throws IOException {
         byte[] buffer = new byte[4096];
         int num;
 
         Map<String, Attributes> entries = manifest.getEntries();
         ArrayList<String> names = new ArrayList<String>(entries.keySet());
         Collections.sort(names);
+
+        boolean firstEntry = true;
+        long offset = 0L;
+
+        // We do the copy in two passes -- first copying all the
+        // entries that are STORED, then copying all the entries that
+        // have any other compression flag (which in practice means
+        // DEFLATED).  This groups all the stored entries together at
+        // the start of the file and makes it easier to do alignment
+        // on them (since only stored entries are aligned).
+
         for (String name : names) {
             JarEntry inEntry = in.getJarEntry(name);
             JarEntry outEntry = null;
-            if (inEntry.getMethod() == JarEntry.STORED) {
-                // Preserve the STORED method of the input entry.
-                outEntry = new JarEntry(inEntry);
-            } else {
-                // Create a new entry so that the compressed len is recomputed.
-                outEntry = new JarEntry(name);
+            if (inEntry.getMethod() != JarEntry.STORED) continue;
+            // Preserve the STORED method of the input entry.
+            outEntry = new JarEntry(inEntry);
+            outEntry.setTime(timestamp);
+
+            // 'offset' is the offset into the file at which we expect
+            // the file data to begin.  This is the value we need to
+            // make a multiple of 'alignement'.
+            offset += JarFile.LOCHDR + outEntry.getName().length();
+            if (firstEntry) {
+                // The first entry in a jar file has an extra field of
+                // four bytes that you can't get rid of; any extra
+                // data you specify in the JarEntry is appended to
+                // these forced four bytes.  This is JAR_MAGIC in
+                // JarOutputStream; the bytes are 0xfeca0000.
+                offset += 4;
+                firstEntry = false;
             }
+            if (alignment > 0 && (offset % alignment != 0)) {
+                // Set the "extra data" of the entry to between 1 and
+                // alignment-1 bytes, to make the file data begin at
+                // an aligned offset.
+                int needed = alignment - (int)(offset % alignment);
+                outEntry.setExtra(new byte[needed]);
+                offset += needed;
+            }
+
+            out.putNextEntry(outEntry);
+
+            InputStream data = in.getInputStream(inEntry);
+            while ((num = data.read(buffer)) > 0) {
+                out.write(buffer, 0, num);
+                offset += num;
+            }
+            out.flush();
+        }
+
+        // Copy all the non-STORED entries.  We don't attempt to
+        // maintain the 'offset' variable past this point; we don't do
+        // alignment on these entries.
+
+        for (String name : names) {
+            JarEntry inEntry = in.getJarEntry(name);
+            JarEntry outEntry = null;
+            if (inEntry.getMethod() == JarEntry.STORED) continue;
+            // Create a new entry so that the compressed len is recomputed.
+            outEntry = new JarEntry(name);
             outEntry.setTime(timestamp);
             out.putNextEntry(outEntry);
 
@@ -589,7 +640,7 @@
                 long timestamp = publicKey.getNotBefore().getTime() + 3600L * 1000;
 
                 Manifest manifest = addDigestsToManifest(inputJar, hash);
-                copyFiles(manifest, inputJar, outputJar, timestamp);
+                copyFiles(manifest, inputJar, outputJar, timestamp, 0);
                 addOtacert(outputJar, publicKeyFile, timestamp, manifest, hash);
 
                 signFile(manifest, inputJar,
@@ -778,6 +829,7 @@
 
     private static void usage() {
         System.err.println("Usage: signapk [-w] " +
+                           "[-a <alignment>] " +
                            "[-providerClass <className>] " +
                            "publickey.x509[.pem] privatekey.pk8 " +
                            "[publickey2.x509[.pem] privatekey2.pk8 ...] " +
@@ -794,6 +846,7 @@
         boolean signWholeFile = false;
         String providerClass = null;
         String providerArg = null;
+        int alignment = 4;
 
         int argstart = 0;
         while (argstart < args.length && args[argstart].startsWith("-")) {
@@ -806,6 +859,9 @@
                 }
                 providerClass = args[++argstart];
                 ++argstart;
+            } else if ("-a".equals(args[argstart])) {
+                alignment = Integer.parseInt(args[++argstart]);
+                ++argstart;
             } else {
                 usage();
             }
@@ -872,7 +928,7 @@
                 outputJar.setLevel(9);
 
                 Manifest manifest = addDigestsToManifest(inputJar, hashes);
-                copyFiles(manifest, inputJar, outputJar, timestamp);
+                copyFiles(manifest, inputJar, outputJar, timestamp, alignment);
                 signFile(manifest, inputJar, publicKey, privateKey, outputJar);
                 outputJar.close();
             }