build/config/fuchsia/zircon.gni

# Copyright 2018 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("//build/config/clang/clang.gni")

# This is $root_build_dir in the Zircon GN build.
zircon_root_build_dir = "//out/build-zircon"

# The top-level `tools` Ninja target in Zircon puts the tool binaries here.
zircon_tools_dir = "$zircon_root_build_dir/tools"

# The `gn gen` stage of the Zircon GN build writes this file.
# It's a list of {name=... path=... type=...} scopes.
zircon_images = read_file("$zircon_root_build_dir/images.json", "json")

foreach(image, zircon_images) {
  if (image.name == "kernel" && image.type == "zbi" && image.cpu == target_cpu) {
    zircon_kernel_zbi = "$zircon_root_build_dir/${image.path}"
  }
}

# Template for running a Zircon host tool as part of the build.
# This is a thin wrapper to define an `action()` target.
#
# Parameters
#
#     tool (required)
#         [string] The name of the tool, like "mkbootfs".
#
#     args (required)
#         [list of strings] The arguments to pass the tool.
#         The tool runs with `root_build_dir` as its current directory,
#         so any file names should be made either absolute or relative
#         to `root_build_dir` using `rebase_path()`.
#
# All other parameters are exactly as for `action()`, except
# that `script` is replaced with `tool`.
#
template("zircon_tool_action") {
  assert(defined(invoker.tool), "zircon_tool_action() requires `tool`")
  assert(defined(invoker.args), "zircon_tool_action() requires `args`")
  _tool = "$zircon_tools_dir/${invoker.tool}"
  action(target_name) {
    inputs = []
    forward_variables_from(invoker,
                           [
                             "testonly",
                             "visibility",
                           ])
    forward_variables_from(invoker,
                           "*",
                           [
                             "args",
                             "script",
                             "tool",
                             "testonly",
                             "visibility",
                           ])
    script = "//build/gn_run_binary.sh"
    inputs += [ _tool ]
    args = [
             clang_prefix,
             rebase_path(_tool, root_build_dir),
           ] + invoker.args
  }
}