build/dart/BUILD.gn

# Copyright 2017 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/dart/toolchain.gni")
import("//build/toolchain/basic_toolchain.gni")
import("//build/toolchain/concurrent_jobs.gni")

declare_args() {
  # Maximum number of Dart processes to run in parallel.
  #
  # Dart analyzer uses a lot of memory which may cause issues when building
  # with many parallel jobs e.g. when using goma. To avoid out-of-memory
  # errors we explicitly reduce the number of jobs.
  concurrent_dart_jobs = default_concurrent_jobs.dart
}

# Copies the patched SDK files for the dart runner
# NOTE: copies to an _nnbd directory to allow for soft transition
copy("platform_files") {
  sources = [
    "//prebuilt/third_party/flutter/$target_cpu/release/aot/dart_runner_patched_sdk/platform_strong.dill",
    "//prebuilt/third_party/flutter/$target_cpu/release/aot/dart_runner_patched_sdk/platform_strong.dill.d",
    "//prebuilt/third_party/flutter/$target_cpu/release/aot/dart_runner_patched_sdk/vm_outline_strong.dill",
  ]
  outputs =
      [ "$root_out_dir/dart_runner_patched_sdk_nnbd/{{source_file_part}}" ]
}

if (current_toolchain == dart_toolchain) {
  pool("dart_pool") {
    depth = concurrent_dart_jobs
  }
} else {
  # A toolchain dedicated to processing and analyzing Dart packages.
  # The only targets in this toolchain are action() targets, so it
  # has no real tools.  But every toolchain needs stamp and copy.
  basic_toolchain("dartlang") {
    expected_label = dart_toolchain
  }
}