pw_log_string/BUILD.gn

# 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.

import("//build_overrides/pigweed.gni")

import("$dir_pw_build/error.gni")
import("$dir_pw_build/target_types.gni")
import("$dir_pw_docgen/docs.gni")
import("backend.gni")

config("public_include_path") {
  include_dirs = [ "public" ]
}

config("backend_config") {
  include_dirs = [ "public_overrides" ]
}

# This source set only provides pw_log_string's backend interface. The implementation is
# pulled in through pw_build_LINK_DEPS.
pw_source_set("pw_log_string") {
  public_configs = [
    ":backend_config",
    ":public_include_path",
  ]
  public = [
    "public/pw_log_string/log_string.h",
    "public_overrides/pw_log_backend/log_backend.h",
  ]
  public_deps = [ dir_pw_preprocessor ]
}

# The log backend deps that might cause circular dependencies, since
# pw_log is so ubiquitous. These deps are kept separate so they can be
# depended on from elsewhere.
if (pw_log_string_BACKEND != "") {
  pw_source_set("pw_log_string.impl") {
    deps = [ pw_log_string_BACKEND ]
  }
} else {
  pw_error("pw_log_string.impl") {
    message = string_join(
            " ",
            [
              "To use pw_log_string, please direct pw_log_string_BACKEND",
              "to the source set that implements the C API.",
            ])
  }
}

pw_doc_group("docs") {
  sources = [ "docs.rst" ]
}