diff --git a/core/binary.mk b/core/binary.mk
index 9060b39..3a3f2e5 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -564,7 +564,7 @@
 	$(transform-renderscripts-to-cpp-and-bc)
 
 # include the dependency files (.d/.P) generated by llvm-rs-cc.
--include $(bc_dep_files:%.d=%.P)
+$(call include-depfile,$(RenderScript_file_stamp).P,$(RenderScript_file_stamp))
 
 LOCAL_INTERMEDIATE_TARGETS += $(RenderScript_file_stamp)
 
@@ -743,12 +743,8 @@
 # Thus we'll actually generate source for each architecture.
 $(foreach s,$(aidl_src),\
     $(eval $(call define-aidl-cpp-rule,$(s),$(aidl_gen_cpp_root),aidl_gen_cpp)))
-ifeq ($(BUILDING_WITH_NINJA),true)
 $(foreach cpp,$(aidl_gen_cpp), \
-    $(eval $(cpp) : .KATI_DEPFILE := $(addsuffix .aidl.P,$(basename $(cpp)))))
-else
-  -include $(addsuffix .aidl.P,$(basename $(aidl_gen_cpp)))
-endif
+    $(call include-depfile,$(addsuffix .aidl.P,$(basename $(cpp))),$(cpp)))
 
 
 $(aidl_gen_cpp) : PRIVATE_MODULE := $(LOCAL_MODULE)
diff --git a/core/clang/config.mk b/core/clang/config.mk
index 330fd1c..6df3e17 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -19,6 +19,7 @@
 RS_LLVM_PREBUILTS_VERSION := 3.8
 RS_LLVM_PREBUILTS_BASE := prebuilts/clang/host
 RS_LLVM_PREBUILTS_PATH := $(RS_LLVM_PREBUILTS_BASE)/$(BUILD_OS)-x86/$(RS_LLVM_PREBUILTS_VERSION)/bin
+RS_CLANG := $(RS_LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX)
 RS_LLVM_AS := $(RS_LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX)
 RS_LLVM_LINK := $(RS_LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX)
 
diff --git a/core/definitions.mk b/core/definitions.mk
index 8f5fd11..df63f7c 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -856,7 +856,7 @@
 endif
 
 ###########################################################
-## Commands for munging the dependency files GCC generates
+## Commands for munging the dependency files the compiler generates
 ###########################################################
 # $(1): the input .d file
 # $(2): the output .P file
@@ -872,6 +872,21 @@
 endef
 
 ###########################################################
+## Commands for including the dependency files the compiler generates
+###########################################################
+# $(1): the .P file
+# $(2): the main build target
+ifeq ($(BUILDING_WITH_NINJA),true)
+define include-depfile
+$(eval $(2) : .KATI_DEPFILE := $1)
+endef
+else
+define include-depfile
+$(eval -include $1)
+endef
+endif
+
+###########################################################
 ## Commands for running lex
 ###########################################################
 
@@ -936,6 +951,24 @@
 ## Commands to compile RenderScript to C++
 ###########################################################
 
+## Merge multiple .d files generated by llvm-rs-cc. This is necessary
+## because ninja can handle only a single depfile per build target.
+## We assume .d files start with two targets and their prerequisites
+## follow. The first line is for the stamp file and the second line is
+## for .bc file. There's no way to let ninja know dependencies to .bc
+## files, so we give up build targets for .bc files. As we write the
+## .stamp file as the target by ourselves, the sed script removes the
+## first two lines and append a backslash to the last line to
+## concatenate contents of multiple files.
+# $(1): .d files to be merged
+# $(2): merged .d file
+define _merge-renderscript-d
+$(hide) echo '$@: $(backslash)' > $2
+$(foreach d,$1, \
+  $(hide) sed '1d; 2d; s/\( \\\)\?$$/ \\/' $d >> $2$(newline))
+$(hide) echo >> $2
+endef
+
 define transform-renderscripts-to-cpp-and-bc
 @echo "RenderScript: $(PRIVATE_MODULE) <= $(PRIVATE_RS_SOURCE_FILES)"
 $(hide) rm -rf $(PRIVATE_RS_OUTPUT_DIR)
@@ -949,8 +982,8 @@
   $(PRIVATE_RS_FLAGS) \
   $(addprefix -I , $(PRIVATE_RS_INCLUDES)) \
   $(PRIVATE_RS_SOURCE_FILES)
-  $(foreach d,$(PRIVATE_DEP_FILES),\
-    $(call transform-d-to-p-args,$(d),$(d:%.d=%.P))$(newline))
+$(call _merge-renderscript-d,$(PRIVATE_DEP_FILES),$@.d)
+$(call transform-d-to-p-args,$@.d,$@.P)
 $(hide) mkdir -p $(dir $@)
 $(hide) touch $@
 endef
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 6c38e99..46c1463 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -154,6 +154,10 @@
 ifeq ($(TARGET_ARCH),)
   $(error TARGET_ARCH not defined by board config: $(board_config_mk))
 endif
+ifneq ($(MALLOC_IMPL),)
+  $(warning *** Unsupported option MALLOC_IMPL defined by board config: $(board_config_mk).)
+  $(error Use `MALLOC_SVELTE := true` to configure jemalloc for low-memory)
+endif
 TARGET_DEVICE_DIR := $(patsubst %/,%,$(dir $(board_config_mk)))
 board_config_mk :=
 
diff --git a/target/product/embedded.mk b/target/product/embedded.mk
index 5e61133..55de3b9 100644
--- a/target/product/embedded.mk
+++ b/target/product/embedded.mk
@@ -43,6 +43,7 @@
     libGLESv3 \
     libbinder \
     libc \
+    libc_malloc_debug \
     libcutils \
     libdl \
     libgui \