|  | # 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. | 
|  |  | 
|  | if (target_os == "") { | 
|  | target_os = host_os | 
|  | } | 
|  | if (target_cpu == "") { | 
|  | target_cpu = host_cpu | 
|  | } | 
|  | if (current_cpu == "") { | 
|  | current_cpu = target_cpu | 
|  | } | 
|  | if (current_os == "") { | 
|  | current_os = target_os | 
|  | } | 
|  |  | 
|  | is_linux = host_os == "linux" && current_os == "linux" && target_os == "linux" | 
|  | is_mac = host_os == "mac" && current_os == "mac" && target_os == "mac" | 
|  |  | 
|  | # All binary targets will get this list of configs by default. | 
|  | _shared_binary_target_configs = [ "//build:compiler_defaults" ] | 
|  |  | 
|  | # Apply that default list to the binary target types. | 
|  | set_defaults("executable") { | 
|  | configs = _shared_binary_target_configs | 
|  |  | 
|  | # Executables get this additional configuration. | 
|  | configs += [ "//build:executable_ldconfig" ] | 
|  | } | 
|  | set_defaults("static_library") { | 
|  | configs = _shared_binary_target_configs | 
|  | } | 
|  | set_defaults("shared_library") { | 
|  | configs = _shared_binary_target_configs | 
|  | } | 
|  | set_defaults("source_set") { | 
|  | configs = _shared_binary_target_configs | 
|  | } | 
|  |  | 
|  | set_default_toolchain("//build/toolchain:gcc") |