# Copyright 2020 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.

set(dir_pw_third_party_nanopb "" CACHE PATH
    "Path to a Nanopb installation to import. Set to PRESENT if Nanopb is already present in the build."
)

if("${dir_pw_third_party_nanopb}" STREQUAL "")
  return()
elseif(NOT "${dir_pw_third_party_nanopb}" STREQUAL PRESENT)
  add_subdirectory("${dir_pw_third_party_nanopb}" third_party/nanopb)
endif()

add_library(pw_third_party.nanopb INTERFACE)
target_link_libraries(pw_third_party.nanopb INTERFACE protobuf-nanopb-static)
target_include_directories(pw_third_party.nanopb
  INTERFACE
    $<TARGET_PROPERTY:protobuf-nanopb-static,SOURCE_DIR>
)