BUILD.gn

# Copyright (c) 2019 Crumbs Project. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This is the root build file for GN. GN will start processing by loading this
# file, and recursively load all dependencies until all dependencies are either
# resolved or known not to exist (which will cause the build to fail). So if
# you add a new build file, there must be some path of dependencies from this
# file to your new one or GN won't know about it.

import("//build/config/compiler/compiler.gni")
import("//build/config/features.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build/util/generate_wrapper.gni")

declare_args() {
  # A list of extra dependencies to add to the root target. This allows a
  # checkout to add additional targets without explicitly changing any checked-
  # in files.
  root_extra_deps = []
}

if (is_official_build) {
  # An official (maximally optimized!) component (optimized for build times)
  # build doesn't make sense and usually doesn't work.
  assert(!is_component_build)
}

# This file defines the following two main targets:
#
# "gn_all" is used to create explicit dependencies from the root BUILD.gn to
# each top-level component that we wish to include when building everything via
# "all". This is required since the set of targets built by "all" is determined
# automatically based on reachability from the root BUILD.gn (for details, see
# crbug.com/503241). Builders should typically use "all", or list targets
# explicitly, rather than relying on "gn_all".
#
# "gn_visibility": targets that are normally not visible to top-level targets,
# but are built anyway by "all". Since we don't want any such targets, we have
# this placeholder to make sure hidden targets that aren't otherwise depended
# on yet are accounted for.

group("gn_all") {
  testonly = true

  deps = [
    ":gn_visibility",
    "//base:base_perftests",
    "//base:base_unittests",
    "//base/util:base_util_unittests",
  ]
}

group("gn_visibility") {
  deps = [
    "//build/config/sanitizers:options_sources",
  ]
}