diff --git a/core/java.mk b/core/java.mk
index aa63d5a..6ee2c04 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -109,155 +109,7 @@
 ###############################################################
 ## .rs files: RenderScript sources to .java files and .bc files
 ###############################################################
-renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
-rs_generated_res_zip :=
-rs_generated_src_jar :=
-rs_compatibility_jni_libs :=
-ifneq ($(renderscript_sources),)
-renderscript_sources_fullpath := $(addprefix $(LOCAL_PATH)/, $(renderscript_sources))
-renderscript_intermediate.COMMON := $(intermediates.COMMON)/renderscript
-rs_generated_res_zip := $(renderscript_intermediate.COMMON)/res.zip
-rs_generated_src_jar := $(renderscript_intermediate.COMMON)/rs.srcjar
-
-LOCAL_SRCJARS += $(rs_generated_src_jar)
-
-# Defaulting to an empty string uses the latest available platform SDK.
-renderscript_target_api :=
-
-ifneq (,$(LOCAL_RENDERSCRIPT_TARGET_API))
-  renderscript_target_api := $(LOCAL_RENDERSCRIPT_TARGET_API)
-else
-  ifneq (,$(LOCAL_SDK_VERSION))
-    # Set target-api for LOCAL_SDK_VERSIONs other than current.
-    ifneq (,$(filter-out current system_current test_current core_current, $(LOCAL_SDK_VERSION)))
-      renderscript_target_api := $(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION))
-    endif
-  endif  # LOCAL_SDK_VERSION is set
-endif  # LOCAL_RENDERSCRIPT_TARGET_API is set
-
-# For 64-bit, we always have to upgrade to at least 21 for compat build.
-ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
-  ifeq ($(TARGET_IS_64_BIT),true)
-    ifneq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
-      renderscript_target_api := 21
-    endif
-  endif
-endif
-
-ifeq ($(LOCAL_RENDERSCRIPT_CC),)
-LOCAL_RENDERSCRIPT_CC := $(LLVM_RS_CC)
-endif
-
-# Turn on all warnings and warnings as errors for RS compiles.
-# This can be disabled with LOCAL_RENDERSCRIPT_FLAGS := -Wno-error
-renderscript_flags := -Wall -Werror
-renderscript_flags += $(LOCAL_RENDERSCRIPT_FLAGS)
-
-# prepend the RenderScript system include path
-ifneq ($(filter-out current system_current test_current core_current,$(LOCAL_SDK_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_VERSION))),)
-# if a numeric LOCAL_SDK_VERSION, or current LOCAL_SDK_VERSION with TARGET_BUILD_APPS
-LOCAL_RENDERSCRIPT_INCLUDES := \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/clang-include \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/include \
-    $(LOCAL_RENDERSCRIPT_INCLUDES)
-else
-LOCAL_RENDERSCRIPT_INCLUDES := \
-    $(TOPDIR)external/clang/lib/Headers \
-    $(TOPDIR)frameworks/rs/script_api/include \
-    $(LOCAL_RENDERSCRIPT_INCLUDES)
-endif
-
-ifneq ($(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE),)
-LOCAL_RENDERSCRIPT_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE)
-endif
-
-bc_files := $(patsubst %.rs,%.bc, $(notdir $(renderscript_sources)))
-bc_dep_files := $(addprefix $(renderscript_intermediate.COMMON)/,$(patsubst %.bc,%.d,$(bc_files)))
-
-$(rs_generated_src_jar): PRIVATE_RS_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES)
-$(rs_generated_src_jar): PRIVATE_RS_CC := $(LOCAL_RENDERSCRIPT_CC)
-$(rs_generated_src_jar): PRIVATE_RS_FLAGS := $(renderscript_flags)
-$(rs_generated_src_jar): PRIVATE_RS_SOURCE_FILES := $(renderscript_sources_fullpath)
-$(rs_generated_src_jar): PRIVATE_RS_OUTPUT_DIR := $(renderscript_intermediate.COMMON)
-$(rs_generated_src_jar): PRIVATE_RS_TARGET_API := $(renderscript_target_api)
-$(rs_generated_src_jar): PRIVATE_DEP_FILES := $(bc_dep_files)
-$(rs_generated_src_jar): PRIVATE_RS_OUTPUT_RES_ZIP := $(rs_generated_res_zip)
-$(rs_generated_src_jar): .KATI_IMPLICIT_OUTPUTS := $(rs_generated_res_zip)
-$(rs_generated_src_jar): $(renderscript_sources_fullpath) $(LOCAL_RENDERSCRIPT_CC) $(SOONG_ZIP)
-	$(transform-renderscripts-to-java-and-bc)
-
-# include the dependency files (.d/.P) generated by llvm-rs-cc.
-$(call include-depfile,$(rs_generated_src_jar).P,$(rs_generated_src_jar))
-
-ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
-
-
-ifeq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
-ifeq ($(TARGET_IS_64_BIT),true)
-renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc64/
-else
-renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc32/
-endif
-else
-renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/
-endif
-
-rs_generated_bc := $(addprefix \
-    $(renderscript_intermediate.bc_folder), $(bc_files))
-
-renderscript_intermediate := $(intermediates)/renderscript
-
-# We don't need the .so files in bundled branches
-# Prevent these from showing up on the device
-# One exception is librsjni.so, which is needed for
-# both native path and compat path.
-rs_jni_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/librsjni.so
-LOCAL_JNI_SHARED_LIBRARIES += librsjni
-
-ifneq (,$(TARGET_BUILD_APPS)$(FORCE_BUILD_RS_COMPAT))
-
-rs_compatibility_jni_libs := $(addprefix \
-    $(renderscript_intermediate)/librs., \
-    $(patsubst %.bc,%.so, $(bc_files)))
-
-$(rs_generated_src_jar): .KATI_IMPLICIT_OUTPUTS += $(rs_generated_bc)
-
-rs_support_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupport.so
-LOCAL_JNI_SHARED_LIBRARIES += libRSSupport
-
-rs_support_io_lib :=
-# check if the target api level support USAGE_IO
-ifeq ($(filter $(RSCOMPAT_NO_USAGEIO_API_LEVELS),$(renderscript_target_api)),)
-rs_support_io_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupportIO.so
-LOCAL_JNI_SHARED_LIBRARIES += libRSSupportIO
-endif
-
-my_arch := $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
-ifneq (,$(filter arm64 mips64 x86_64,$(my_arch)))
-  my_min_sdk_version := 21
-else
-  my_min_sdk_version := $(MIN_SUPPORTED_SDK_VERSION)
-endif
-
-$(rs_compatibility_jni_libs): $(RS_PREBUILT_CLCORE) \
-    $(rs_support_lib) $(rs_support_io_lib) $(rs_jni_lib) $(rs_compiler_rt)
-$(rs_compatibility_jni_libs): $(BCC_COMPAT)
-$(rs_compatibility_jni_libs): PRIVATE_CXX := $(CXX_WRAPPER) $(TARGET_CXX)
-$(rs_compatibility_jni_libs): PRIVATE_SDK_VERSION := $(my_min_sdk_version)
-$(rs_compatibility_jni_libs): $(renderscript_intermediate)/librs.%.so: \
-    $(renderscript_intermediate.bc_folder)%.bc \
-    $(SOONG_OUT_DIR)/ndk.timestamp
-	$(transform-bc-to-so)
-
-endif
-
-endif
-
-LOCAL_INTERMEDIATE_TARGETS += $(rs_generated_src_jar)
-# Make sure the generated resource will be added to the apk.
-LOCAL_RESOURCE_DIR := $(renderscript_intermediate.COMMON)/res $(LOCAL_RESOURCE_DIR)
-endif
-
+include $(BUILD_SYSTEM)/java_renderscript.mk
 
 ###########################################################
 ## AIDL: Compile .aidl files to .java
diff --git a/core/java_common.mk b/core/java_common.mk
index dea0435..44ee4b2 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -177,7 +177,7 @@
 #####################################
 ## Warn if there is unrecognized file in LOCAL_SRC_FILES.
 my_unknown_src_files := $(filter-out \
-  %.java %.aidl %.proto %.logtags %.rs, \
+  %.java %.aidl %.proto %.logtags, \
   $(LOCAL_SRC_FILES) $(LOCAL_INTERMEDIATE_SOURCES) $(LOCAL_GENERATED_SOURCES))
 ifneq ($(my_unknown_src_files),)
 $(warning $(LOCAL_MODULE_MAKEFILE): $(LOCAL_MODULE): Unused source files: $(my_unknown_src_files))
diff --git a/core/java_renderscript.mk b/core/java_renderscript.mk
new file mode 100644
index 0000000..191b3be
--- /dev/null
+++ b/core/java_renderscript.mk
@@ -0,0 +1,155 @@
+###############################################################
+## Renderscript support for java
+## Adds rules to convert .rs files to .java and .bc files
+###############################################################
+
+renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
+LOCAL_SRC_FILES := $(filter-out %.rs,$(LOCAL_SRC_FILES))
+
+rs_generated_res_zip :=
+rs_generated_src_jar :=
+rs_compatibility_jni_libs :=
+ifneq ($(renderscript_sources),)
+renderscript_sources_fullpath := $(addprefix $(LOCAL_PATH)/, $(renderscript_sources))
+renderscript_intermediate.COMMON := $(intermediates.COMMON)/renderscript
+rs_generated_res_zip := $(renderscript_intermediate.COMMON)/res.zip
+rs_generated_src_jar := $(renderscript_intermediate.COMMON)/rs.srcjar
+
+LOCAL_SRCJARS += $(rs_generated_src_jar)
+
+# Defaulting to an empty string uses the latest available platform SDK.
+renderscript_target_api :=
+
+ifneq (,$(LOCAL_RENDERSCRIPT_TARGET_API))
+  renderscript_target_api := $(LOCAL_RENDERSCRIPT_TARGET_API)
+else
+  ifneq (,$(LOCAL_SDK_VERSION))
+    # Set target-api for LOCAL_SDK_VERSIONs other than current.
+    ifneq (,$(filter-out current system_current test_current core_current, $(LOCAL_SDK_VERSION)))
+      renderscript_target_api := $(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION))
+    endif
+  endif  # LOCAL_SDK_VERSION is set
+endif  # LOCAL_RENDERSCRIPT_TARGET_API is set
+
+# For 64-bit, we always have to upgrade to at least 21 for compat build.
+ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
+  ifeq ($(TARGET_IS_64_BIT),true)
+    ifneq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
+      renderscript_target_api := 21
+    endif
+  endif
+endif
+
+ifeq ($(LOCAL_RENDERSCRIPT_CC),)
+LOCAL_RENDERSCRIPT_CC := $(LLVM_RS_CC)
+endif
+
+# Turn on all warnings and warnings as errors for RS compiles.
+# This can be disabled with LOCAL_RENDERSCRIPT_FLAGS := -Wno-error
+renderscript_flags := -Wall -Werror
+renderscript_flags += $(LOCAL_RENDERSCRIPT_FLAGS)
+
+# prepend the RenderScript system include path
+ifneq ($(filter-out current system_current test_current core_current,$(LOCAL_SDK_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_VERSION))),)
+# if a numeric LOCAL_SDK_VERSION, or current LOCAL_SDK_VERSION with TARGET_BUILD_APPS
+LOCAL_RENDERSCRIPT_INCLUDES := \
+    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/clang-include \
+    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/include \
+    $(LOCAL_RENDERSCRIPT_INCLUDES)
+else
+LOCAL_RENDERSCRIPT_INCLUDES := \
+    $(TOPDIR)external/clang/lib/Headers \
+    $(TOPDIR)frameworks/rs/script_api/include \
+    $(LOCAL_RENDERSCRIPT_INCLUDES)
+endif
+
+ifneq ($(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE),)
+LOCAL_RENDERSCRIPT_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE)
+endif
+
+bc_files := $(patsubst %.rs,%.bc, $(notdir $(renderscript_sources)))
+bc_dep_files := $(addprefix $(renderscript_intermediate.COMMON)/,$(patsubst %.bc,%.d,$(bc_files)))
+
+$(rs_generated_src_jar): PRIVATE_RS_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES)
+$(rs_generated_src_jar): PRIVATE_RS_CC := $(LOCAL_RENDERSCRIPT_CC)
+$(rs_generated_src_jar): PRIVATE_RS_FLAGS := $(renderscript_flags)
+$(rs_generated_src_jar): PRIVATE_RS_SOURCE_FILES := $(renderscript_sources_fullpath)
+$(rs_generated_src_jar): PRIVATE_RS_OUTPUT_DIR := $(renderscript_intermediate.COMMON)
+$(rs_generated_src_jar): PRIVATE_RS_TARGET_API := $(renderscript_target_api)
+$(rs_generated_src_jar): PRIVATE_DEP_FILES := $(bc_dep_files)
+$(rs_generated_src_jar): PRIVATE_RS_OUTPUT_RES_ZIP := $(rs_generated_res_zip)
+$(rs_generated_src_jar): .KATI_IMPLICIT_OUTPUTS := $(rs_generated_res_zip)
+$(rs_generated_src_jar): $(renderscript_sources_fullpath) $(LOCAL_RENDERSCRIPT_CC) $(SOONG_ZIP)
+	$(transform-renderscripts-to-java-and-bc)
+
+# include the dependency files (.d/.P) generated by llvm-rs-cc.
+$(call include-depfile,$(rs_generated_src_jar).P,$(rs_generated_src_jar))
+
+ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
+
+
+ifeq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
+ifeq ($(TARGET_IS_64_BIT),true)
+renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc64/
+else
+renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc32/
+endif
+else
+renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/
+endif
+
+rs_generated_bc := $(addprefix \
+    $(renderscript_intermediate.bc_folder), $(bc_files))
+
+renderscript_intermediate := $(intermediates)/renderscript
+
+# We don't need the .so files in bundled branches
+# Prevent these from showing up on the device
+# One exception is librsjni.so, which is needed for
+# both native path and compat path.
+rs_jni_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/librsjni.so
+LOCAL_JNI_SHARED_LIBRARIES += librsjni
+
+ifneq (,$(TARGET_BUILD_APPS)$(FORCE_BUILD_RS_COMPAT))
+
+rs_compatibility_jni_libs := $(addprefix \
+    $(renderscript_intermediate)/librs., \
+    $(patsubst %.bc,%.so, $(bc_files)))
+
+$(rs_generated_src_jar): .KATI_IMPLICIT_OUTPUTS += $(rs_generated_bc)
+
+rs_support_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupport.so
+LOCAL_JNI_SHARED_LIBRARIES += libRSSupport
+
+rs_support_io_lib :=
+# check if the target api level support USAGE_IO
+ifeq ($(filter $(RSCOMPAT_NO_USAGEIO_API_LEVELS),$(renderscript_target_api)),)
+rs_support_io_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupportIO.so
+LOCAL_JNI_SHARED_LIBRARIES += libRSSupportIO
+endif
+
+my_arch := $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
+ifneq (,$(filter arm64 mips64 x86_64,$(my_arch)))
+  my_min_sdk_version := 21
+else
+  my_min_sdk_version := $(MIN_SUPPORTED_SDK_VERSION)
+endif
+
+$(rs_compatibility_jni_libs): $(RS_PREBUILT_CLCORE) \
+    $(rs_support_lib) $(rs_support_io_lib) $(rs_jni_lib) $(rs_compiler_rt)
+$(rs_compatibility_jni_libs): $(BCC_COMPAT)
+$(rs_compatibility_jni_libs): PRIVATE_CXX := $(CXX_WRAPPER) $(TARGET_CXX)
+$(rs_compatibility_jni_libs): PRIVATE_SDK_VERSION := $(my_min_sdk_version)
+$(rs_compatibility_jni_libs): $(renderscript_intermediate)/librs.%.so: \
+    $(renderscript_intermediate.bc_folder)%.bc \
+    $(SOONG_OUT_DIR)/ndk.timestamp
+	$(transform-bc-to-so)
+
+endif
+
+endif
+
+LOCAL_INTERMEDIATE_TARGETS += $(rs_generated_src_jar)
+# Make sure the generated resource will be added to the apk.
+LOCAL_RESOURCE_DIR := $(renderscript_intermediate.COMMON)/res $(LOCAL_RESOURCE_DIR)
+endif