diff --git a/core/Makefile b/core/Makefile
index 7bb9d17..2d7f76d 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -47,6 +47,20 @@
 unique_product_copy_files_destinations :=
 
 # -----------------------------------------------------------------
+# Define rules to copy headers defined in copy_headers.mk
+# If more than one makefile declared a header, print a warning,
+# then copy the last one defined. This matches the previous make
+# behavior.
+$(foreach dest,$(ALL_COPIED_HEADERS), \
+    $(eval _srcs := $(ALL_COPIED_HEADERS.$(dest).SRC)) \
+    $(eval _src := $(word $(words $(_srcs)),$(_srcs))) \
+    $(if $(call streq,$(_src),$(_srcs)),, \
+        $(warning Duplicate header copy: $(dest)) \
+	$(warning Defined in: $(ALL_COPIED_HEADERS.$(dest).MAKEFILE))) \
+    $(eval $(call copy-one-header,$(_src),$(dest))))
+all_copied_headers: $(ALL_COPIED_HEADERS)
+
+# -----------------------------------------------------------------
 # docs/index.html
 ifeq (,$(TARGET_BUILD_APPS))
 gen := $(OUT_DOCS)/index.html
@@ -468,7 +482,6 @@
 # the ramdisk
 INTERNAL_RAMDISK_FILES := $(filter $(TARGET_ROOT_OUT)/%, \
 	$(ALL_PREBUILT) \
-	$(ALL_COPIED_HEADERS) \
 	$(ALL_GENERATED_SOURCES) \
 	$(ALL_DEFAULT_INSTALLED_MODULES))
 
@@ -1032,7 +1045,6 @@
 
 INTERNAL_SYSTEMIMAGE_FILES := $(filter $(TARGET_OUT)/%, \
     $(ALL_PREBUILT) \
-    $(ALL_COPIED_HEADERS) \
     $(ALL_GENERATED_SOURCES) \
     $(ALL_DEFAULT_INSTALLED_MODULES) \
     $(PDK_FUSION_SYSIMG_FILES) \
@@ -1949,7 +1961,6 @@
 ifeq ($(strip $(ATREE_FILES)),)
 ATREE_FILES := \
 	$(ALL_PREBUILT) \
-	$(ALL_COPIED_HEADERS) \
 	$(ALL_DEFAULT_INSTALLED_MODULES) \
 	$(INSTALLED_RAMDISK_TARGET) \
 	$(ALL_DOCS) \
diff --git a/core/clang/versions.mk b/core/clang/versions.mk
index 7106899..96872c2 100644
--- a/core/clang/versions.mk
+++ b/core/clang/versions.mk
@@ -1,5 +1,5 @@
 ## Clang/LLVM release versions.
 
 LLVM_RELEASE_VERSION := 3.8
-LLVM_PREBUILTS_VERSION ?= clang-2577113
+LLVM_PREBUILTS_VERSION ?= clang-2629532
 LLVM_PREBUILTS_BASE ?= prebuilts/clang/host
diff --git a/core/copy_headers.mk b/core/copy_headers.mk
index e16560f..7d5a5d9 100644
--- a/core/copy_headers.mk
+++ b/core/copy_headers.mk
@@ -18,8 +18,10 @@
       $(if $(LOCAL_COPY_HEADERS_TO),\
         $($(my_prefix)OUT_HEADERS)/$(LOCAL_COPY_HEADERS_TO)/$(notdir $(header)),\
         $($(my_prefix)OUT_HEADERS)/$(notdir $(header)))) \
-  $(eval $(call copy-one-header,$(_chFrom),$(_chTo))) \
-  $(eval all_copied_headers: $(_chTo)) \
+  $(eval ALL_COPIED_HEADERS.$(_chTo).MAKEFILE += $(LOCAL_MODULE_MAKEFILE)) \
+  $(eval ALL_COPIED_HEADERS.$(_chTo).SRC += $(_chFrom)) \
+  $(if $(filter $(_chTo),$(ALL_COPIED_HEADERS)),, \
+      $(eval ALL_COPIED_HEADERS += $(_chTo))) \
  )
 _chFrom :=
 _chTo :=
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index 3578c46..286670b 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -289,7 +289,9 @@
 endif
 endif # LOCAL_MODULE_CLASS != APPS
 
-ifeq ($(LOCAL_IS_HOST_MODULE)$(LOCAL_MODULE_CLASS),JAVA_LIBRARIES)
+ifeq ($(LOCAL_MODULE_CLASS),JAVA_LIBRARIES)
+my_src_jar := $(my_prebuilt_src_file)
+ifeq ($(LOCAL_IS_HOST_MODULE),)
 # for target java libraries, the LOCAL_BUILT_MODULE is in a product-specific dir,
 # while the deps should be in the common dir, so we make a copy in the common dir.
 # For nonstatic library, $(common_javalib_jar) is the dependency file,
@@ -309,9 +311,6 @@
 	# Make sure the extracted classes.jar has a new timestamp.
 	$(hide) touch $@
 
-else
-# This is jar file.
-my_src_jar := $(my_prebuilt_src_file)
 endif
 $(common_classes_jar) : $(my_src_jar) | $(ACP)
 	$(transform-prebuilt-to-target)
@@ -323,14 +322,13 @@
 
 # make sure the classes.jar and javalib.jar are built before $(LOCAL_BUILT_MODULE)
 $(built_module) : $(common_javalib_jar)
-endif # TARGET JAVA_LIBRARIES
-
-ifeq ($(LOCAL_MODULE_CLASS),JAVA_LIBRARIES)
+endif # LOCAL_IS_HOST_MODULE is not set
 
 ifneq ($(LOCAL_JILL_FLAGS),)
 $(error LOCAL_JILL_FLAGS is not supported any more, please use jack options in LOCAL_JACK_FLAGS instead)
 endif
 
+# We may be building classes.jack from a host jar for host dalvik Java library.
 $(intermediates.COMMON)/classes.jack : PRIVATE_JACK_FLAGS:=$(LOCAL_JACK_FLAGS)
 $(intermediates.COMMON)/classes.jack : $(my_src_jar) $(LOCAL_MODULE_MAKEFILE_DEP) \
         $(LOCAL_ADDITIONAL_DEPENDENCIES) $(JACK) | setup-jack-server
diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index 94efe52..3782869 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -47,7 +47,8 @@
     libz \
     oatdump \
     okhttp \
-    patchoat
+    patchoat \
+    profman
 
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += \
     dalvik.vm.image-dex2oat-Xms=64m \