cmp --quiet $$$${srcfname} $(1)/$$$${destfname} \
|| ( mkdir -p `dirname $(1)/$$$${destfname}` && $$(call cp_cmd,$$(LOCAL_BUILD_DIR)/$$$${srcfname},$(1)/$$$${destfname}) ) || exit 1 ; )
endef
cmp --quiet $$$${srcfname} $(1)/$$$${destfname} \
|| ( mkdir -p `dirname $(1)/$$$${destfname}` && $$(call cp_cmd,$$(LOCAL_BUILD_DIR)/$$$${srcfname},$(1)/$$$${destfname}) ) || exit 1 ; )
endef