# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This file contains Chrome-feature-related build flags (see ui.gni for
# UI-related ones). These should theoretically be moved to the build files of
# the features themselves.
#
# However, today we have many "bad" dependencies on some of these flags from,
# e.g. base, so they need to be global to match the GYP configuration. Also,
# anything that needs a grit define must be in either this file or ui.gni.
#
# PLEASE TRY TO AVOID ADDING FLAGS TO THIS FILE in cases where grit isn't
# required. See the declare_args block of BUILDCONFIG.gn for advice on how
# to set up feature flags.

import("//build/config/chrome_build.gni")
import("//build/config/chromecast_build.gni")
import("//build/config/headless_build.gni")
if (is_android) {
  import("//build/config/android/config.gni")
}

declare_args() {
  # Multicast DNS.
  enable_mdns = is_win || is_linux

  enable_extensions = !is_android && !is_ios
  enable_plugins = (!is_android && !is_ios) || is_chromecast
  enable_pdf = !is_android && !is_ios && !is_chromecast

  # Enables Native Client support.
  # TODO(GYP): Get NaCl linking on other platforms.
  # Also, see if we can always get rid of enable_nacl_untrusted and
  # enable_pnacl and always build them if enable_nacl is true.
  # Eventually we want this to be just the first line.
  enable_nacl = !is_ios && !is_android && !is_chromecast &&
                current_cpu != "mipsel" && !(is_win && current_cpu != "x64")

  # These default to the non-Boolean "" so that code below can default
  # them to the explicitly-set value of enable_nacl, whereas initializing
  # them here uses the default value of enable_nacl above and ignores any
  # args.gn setting.
  enable_nacl_untrusted = ""
  enable_pnacl = ""

  # If debug_devtools is set to true, JavaScript files for DevTools are stored
  # as is and loaded from disk. Otherwise, a concatenated file is stored in
  # resources.pak. It is still possible to load JS files from disk by passing
  # --debug-devtools cmdline switch.
  debug_devtools = false

  # Enables WebRTC.
  # TODO(GYP) make mac work.
  enable_webrtc = !is_ios

  # Enables the Media Router.
  enable_media_router = !is_ios

  # Enables proprietary codecs and demuxers; e.g. H264, MOV, AAC, and MP3.
  # Android OS includes support for proprietary codecs regardless of building
  # Chromium or Google Chrome. We also ship Google Chrome and Chromecast with
  # proprietary codecs.
  proprietary_codecs = is_android || is_chrome_branded || is_chromecast

  enable_configuration_policy = !is_ios

  # Enables support for background apps.
  enable_background = !is_ios && !is_android

  enable_captive_portal_detection = !is_android && !is_ios

  # Enables use of the session service, which is enabled by default.
  # Android stores them separately on the Java side.
  enable_session_service = !is_android && !is_ios

  enable_plugin_installation = is_win || is_mac

  enable_app_list = !is_ios && !is_android

  enable_supervised_users = !is_ios

  enable_autofill_dialog = !is_ios

  enable_one_click_signin = is_win || is_mac || (is_linux && !is_chromeos)

  enable_remoting = !is_ios && !is_chromecast && !is_headless

  # Enable hole punching for the protected video.
  enable_video_hole = is_android

  # Enables browser side Content Decryption Modules. Required for embedders
  # (e.g. Android and ChromeCast) that use a browser side CDM.
  enable_browser_cdms = is_android || is_chromecast

  # Hangout services is an extension that adds extra features to Hangouts.
  # For official GYP builds, this flag is set.
  enable_hangout_services_extension = false

  # Variable safe_browsing is used to control the build time configuration for
  # safe browsing feature. Safe browsing can be compiled in 3 different levels:
  # 0 disables it, 1 enables it fully, and 2 enables mobile protection via an
  # external API.
  if (is_android) {
    safe_browsing_mode = 2
  } else if (is_ios) {
    safe_browsing_mode = 0
  } else {
    safe_browsing_mode = 1
  }

  # Set to true make a build that disables activation of field trial tests
  # specified in testing/variations/fieldtrial_testing_config_*.json.
  # Note: this setting is ignored if is_chrome_branded.
  fieldtrial_testing_like_official_build = is_chrome_branded

  use_cups = (is_desktop_linux || is_mac) && !is_chromecast && !is_headless
}

# Default these based on the explicit value of enable_nacl, not just
# the default value seen inside the declare_args() context.
if (enable_nacl_untrusted == "") {
  enable_nacl_untrusted = enable_nacl
}
if (enable_pnacl == "") {
  enable_pnacl = enable_nacl
}

# Additional dependent variables -----------------------------------------------

# Set the version of CLD.
#   1: (DEPRECATED! See http://crbug.com/528305 for info) Use only CLD1.
#   2: Use only CLD2.
cld_version = 2

# libudev usage. This currently only affects the content layer.
use_udev = is_linux && !is_chromecast && !is_headless

# Enable the spell checker.
enable_spellcheck = !is_ios

# Use the operating system's spellchecker rather than hunspell.
use_browser_spellchecker = is_android || is_mac

# Enable basic printing support and UI.
enable_basic_printing =
    !is_chromeos && !is_chromecast && !is_ios && !is_headless

# Enable printing with print preview. It does not imply
# enable_basic_printing. It's possible to build Chrome with preview only.
enable_print_preview = !is_android && !is_chromecast && !is_ios && !is_headless

# Enables the use of CDMs in pepper plugins.
enable_pepper_cdms =
    enable_plugins && (is_linux || is_mac || is_win) && !is_chromecast

# The seccomp-bpf sandbox is only supported on three architectures
# currently.
# Do not disable seccomp_bpf anywhere without talking to
# security@chromium.org!
use_seccomp_bpf = (is_linux || is_android) &&
                  (current_cpu == "x86" || current_cpu == "x64" ||
                   current_cpu == "arm" || current_cpu == "mipsel")

# Enable notifications everywhere except iOS.
enable_notifications = !is_ios

enable_web_speech = !is_android && !is_ios

use_dbus = is_linux && !is_chromecast && !is_headless

enable_task_manager = !is_ios && !is_android

enable_themes = !is_android && !is_ios

# TODO(scottmg) remove this when we've fixed printing.
win_pdf_metafile_for_printing = true

# Whether we are using the rlz library or not.  Platforms like Android send
# rlz codes for searches but do not use the library.
enable_rlz_support = is_win || is_mac || is_ios || is_chromeos
enable_rlz = is_chrome_branded && enable_rlz_support

enable_settings_app = enable_app_list && !is_chromeos

enable_service_discovery = enable_mdns || is_mac

# Image loader extension is enabled on ChromeOS only.
enable_image_loader_extension = is_chromeos

# Chrome OS: whether to also build the upcoming version of
# ChromeVox, which can then be enabled via a command-line switch.
enable_chromevox_next = false

# Use brlapi from brltty for braille display support.
use_brlapi = is_chromeos

# Option controlling the use of GConf (the classic GNOME configuration
# system).
use_gconf = is_linux && !is_chromeos && !is_chromecast && !is_headless

# Enable WebVR support by default on Android
# Still requires command line flag to access API
enable_webvr = is_android

use_gio = is_desktop_linux && !is_headless