|  | # Copyright 2022 The Pigweed Authors | 
|  | # | 
|  | # 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 | 
|  | # | 
|  | #     https://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. | 
|  | include_guard(GLOBAL) | 
|  |  | 
|  | include($ENV{PW_ROOT}/pw_build/pigweed.cmake) | 
|  |  | 
|  | # The pw_system backend that provides the system RPC server. | 
|  | pw_add_backend_variable(pw_system.rpc_server_BACKEND) | 
|  |  | 
|  | # The pw_system backend that provides the system target hooks. | 
|  | pw_add_backend_variable(pw_system.target_hooks_BACKEND) |