build/toolchain/cros/BUILD.gn

# 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.

import("//build/toolchain/clang.gni")
import("//build/toolchain/gcc_toolchain.gni")

declare_args() {
  # The CrOS build system supports many different kinds of targets across
  # many different architectures. Bringing your own toolchain is also supported,
  # so it's actually impossible to enumerate all toolchains for all targets
  # as GN toolchain specifications.
  # These arguments provide a mechanism for specifying your CC, CXX and AR at
  # buildfile-generation time, allowing the CrOS build system to always use
  # the right tools for the current target.
  cros_target_cc = ""
  cros_target_cxx = ""
  cros_target_ar = ""
}

gcc_toolchain("target") {
  assert(cros_target_cc != "", "Must provide target CC.")
  assert(cros_target_cxx != "", "Must provide target CXX.")
  assert(cros_target_ar != "", "Must provide target AR.")

  cc = "${cros_target_cc}"
  cxx = "${cros_target_cxx}"

  ar = "${cros_target_ar}"
  ld = cxx

  toolchain_cpu = "${target_cpu}"
  toolchain_os = "linux"
  is_clang = is_clang
}