public/gn/toolchain/BUILD.gn

# Copyright 2019 The Fuchsia 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("$zx/public/gn/config/standard.gni")
import("environment.gni")
import("toolchain.gni")

assert(current_toolchain == default_toolchain,
       "Define toolchains only in `default_toolchain` $default_toolchain")

# The stub toolchain is the $default_toolchain set by //gn/BUILDCONFIG.gn.
# It has nothing but the standard stamp and copy tools, so it can only be
# used for action and copy rules.
define_toolchain("stub") {
  tools = []

  # This is needed for $zx/public/gn/banjo.gni et al.
  propagates_configs = true
}

# This defines user and host toolchains.
define_standard_environments("") {
}

standard_host = false
foreach(host, standard_build_hosts) {
  if (host.cpu == host_cpu && host.os == host_os) {
    standard_host = true
  }
}
assert(standard_host,
       "$host_cpu-$host_os is not a standard build host for Fuchsia")