gn/BUILDCONFIG.gn

# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# It's best to keep the names and defaults of is_foo flags consistent with Chrome.

declare_args() {
  is_debug = true
  is_component_build = false
}

# Platform detection
if (target_os == "") {
  target_os = host_os
}
if (current_os == "") {
  current_os = target_os
}

is_android = current_os == "android"
is_fuchsia = current_os == "fuchsia"
is_ios = current_os == "ios"
is_linux = current_os == "linux"
is_mac = current_os == "mac"
is_win = current_os == "win"

is_posix = !is_win

# A component is either a source_set or a shared_library.
template("component") {
  _component_mode = "source_set"
  if (is_component_build) {
    _component_mode = "shared_library"
  }

  target(_component_mode, target_name) {
    forward_variables_from(invoker, "*")
  }
}

# Default configs
_default_configs = [ "//gn:default" ]
if (!is_debug) {
  _default_configs += [ "//gn:release" ]
}

set_defaults("executable") {
  configs = _default_configs + [ "//gn:executable" ]
}

set_defaults("source_set") {
  configs = _default_configs
}

set_defaults("static_library") {
  configs = _default_configs
}

set_defaults("shared_library") {
  configs = _default_configs
}

set_defaults("component") {
  configs = _default_configs
}

# For now, we support GCC-like toolchains, including Clang.
set_default_toolchain("//gn:gcc_like")