auto import from //depot/cupcake/@135843
diff --git a/core/key_char_map.mk b/core/key_char_map.mk
new file mode 100644
index 0000000..0f112f2
--- /dev/null
+++ b/core/key_char_map.mk
@@ -0,0 +1,27 @@
+###########################################################
+## Standard rules for building an executable file.
+##
+## Additional inputs from base_rules.make:
+## None.
+###########################################################
+
+ifeq ($(strip $(LOCAL_MODULE_CLASS)),)
+LOCAL_MODULE_CLASS := KEYCHARS
+endif
+ifeq ($(strip $(LOCAL_MODULE_SUFFIX)),)
+LOCAL_MODULE_SUFFIX := .bin
+endif
+
+LOCAL_MODULE := $(LOCAL_SRC_FILES)
+
+include $(BUILD_SYSTEM)/base_rules.mk
+
+full_src_files := $(addprefix $(LOCAL_PATH)/,$(LOCAL_SRC_FILES))
+
+$(LOCAL_BUILT_MODULE) : PRIVATE_SRC_FILES := $(full_src_files)
+
+$(LOCAL_BUILT_MODULE) : $(full_src_files) $(KCM)
+ @echo KeyCharMap: $@
+ @mkdir -p $(dir $@)
+ $(hide) $(KCM) $(PRIVATE_SRC_FILES) $@
+