diff --git a/build/core/config.mk b/build/core/config.mk
index 0b345a7..02e5c8b 100644
--- a/build/core/config.mk
+++ b/build/core/config.mk
@@ -24,3 +24,5 @@
 PUBLISH_MAVEN_PREBUILT := $(TOP)/vendor/lineage/build/core/maven_artifact_publish.mk
 
 BUILD_HTTP_PREBUILT := $(TOP)/vendor/lineage/build/core/http_prebuilt.mk
+
+BUILD_RRO_SYSTEM_PACKAGE := $(TOP)/vendor/lineage/build/core/system_rro.mk
diff --git a/build/core/system_rro.mk b/build/core/system_rro.mk
new file mode 100644
index 0000000..9b1257a
--- /dev/null
+++ b/build/core/system_rro.mk
@@ -0,0 +1,28 @@
+# Copyright (C) 2018 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+LOCAL_IS_RUNTIME_RESOURCE_OVERLAY := true
+
+ifneq ($(LOCAL_SRC_FILES),)
+  $(error runtime resource overlay package should not contain sources)
+endif
+
+ifeq ($(LOCAL_RRO_THEME),)
+  $(error runtime resource overlay package must define \'LOCAL_RRO_THEME\')
+else
+  LOCAL_MODULE_PATH := $(TARGET_OUT)/app/$(LOCAL_RRO_THEME)
+endif
+
+include $(BUILD_SYSTEM)/package.mk
+