# 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.

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

import("$dir_pw_build/target_types.gni")
import("$dir_pw_protobuf_compiler/proto.gni")
import("protobuf.gni")

# This file defines a GN source_set for an external installation of protobuf.
# To use, checkout the protobuf source into a directory, then set the build arg
# dir_pw_third_party_protobuf to point to that directory. The protobuf library
# will be available in GN at "$dir_pw_third_party/protobuf".
#
# This is known to work with commit 300dfcc5bf46d0fae35146db2195891df4959e4 in
# the protobuf repository. These targets may not work with other versions.
#
# If the dir_pw_third_party_protobuf build argument is not set, the protobuf
# targets are effectively disabled.
if (dir_pw_third_party_protobuf != "") {
  have_pthreads = current_os == "linux" || current_os == "mac"

  config("includes") {
    include_dirs = [ "$dir_pw_third_party_protobuf/src" ]
  }

  config("defines") {
    defines = [ "HAVE_ZLIB=0" ]
    if (have_pthreads) {
      defines += [ "HAVE_PTHREAD=1" ]
    }
  }

  config("cc_flags") {
    cflags_cc = [
      "-Wno-cast-qual",
      "-Wno-shadow",
      "-Wno-sign-compare",
      "-Wno-unused-parameter",
    ]
  }

  pw_source_set("libprotobuf_lite") {
    sources = [
      "$dir_pw_third_party_protobuf/src/google/protobuf/any_lite.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/arena.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/extension_set.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/generated_enum_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/generated_message_table_driven_lite.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/generated_message_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/implicit_weak_message.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/coded_stream.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/io_win32.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/strtod.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/zero_copy_stream.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/zero_copy_stream_impl.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/zero_copy_stream_impl_lite.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/map.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/message_lite.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/parse_context.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/repeated_field.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/bytestream.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/common.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/int128.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/status.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/statusor.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/stringpiece.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/stringprintf.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/structurally_valid.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/strutil.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/time.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/wire_format_lite.cc",
    ]
    public_configs = [
      ":includes",
      ":cc_flags",
    ]
    configs = [ ":defines" ]
  }

  pw_source_set("libprotobuf") {
    sources = [
      "$dir_pw_third_party_protobuf/src/google/protobuf/any.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/any.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/api.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/compiler/importer.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/compiler/parser.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/descriptor.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/descriptor.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/descriptor_database.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/duration.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/dynamic_message.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/empty.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/extension_set_heavy.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/field_mask.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/generated_message_reflection.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/generated_message_table_driven.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/gzip_stream.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/printer.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/io/tokenizer.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/map_field.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/message.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/reflection_ops.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/service.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/source_context.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/struct.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/stubs/substitute.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/text_format.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/timestamp.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/type.pb.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/unknown_field_set.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/delimited_message_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/field_comparator.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/field_mask_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/datapiece.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/default_value_objectwriter.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/error_listener.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/field_mask_utility.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/json_escaping.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/json_objectwriter.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/json_stream_parser.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/object_writer.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/proto_writer.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/protostream_objectsource.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/protostream_objectwriter.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/type_info.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/type_info_test_helper.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/internal/utility.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/json_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/message_differencer.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/time_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/util/type_resolver_util.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/wire_format.cc",
      "$dir_pw_third_party_protobuf/src/google/protobuf/wrappers.pb.cc",
    ]
    public_deps = [ ":libprotobuf_lite" ]
    configs = [ ":defines" ]
  }

  pw_proto_library("wellknown_types") {
    sources = [
      "$dir_pw_third_party_protobuf/src/google/protobuf/any.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/api.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/descriptor.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/duration.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/empty.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/field_mask.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/source_context.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/struct.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/timestamp.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/type.proto",
      "$dir_pw_third_party_protobuf/src/google/protobuf/wrappers.proto",
    ]
    strip_prefix = "$dir_pw_third_party_protobuf/src/"
  }
} else {
  # As mentioned above, these targets are effectively disabled if the build
  # argument pointing to the protobuf source directory is not set.
  group("libprotobuf_lite") {
  }
  group("libprotobuf") {
  }
}