zircon/bootloader/BUILD.gn

# Copyright 2020 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.

if (current_toolchain == default_toolchain) {
  # In the default toolchain, simply define the bootloader toolchains
  # to be used to build Gigaboot as a Win32 PE32+ executable.

  import("//build/toolchain/zircon/zircon_toolchain_suite.gni")

  # Define a Zircon EFI toolchain. These are required to build the Gigaboot
  # bootloader (see //zircon/bootloader/README.md)
  #
  # Parameters:
  #    cpu: [required]
  #      Fuchsia device CPU name (e.g. "x64" or "arm64")
  #      Type: string
  #
  template("zircon_efi_toolchain") {
    zircon_toolchain_suite(target_name) {
      cpu = invoker.cpu
      os = "win"
      environment = "efi"
      with_shared = false
      exclude_variant_tags = [
        "instrumented",
        "gcc",
      ]
      toolchain_variant_args = {
        configs = [ "//zircon/bootloader:efi_config" ]

        # TODO: harmless, but just to match build.mk
        remove_common_configs =
            [ "//build/config/zircon:default_frame_pointers" ]
      }
    }
  }

  # These toolchains will be used to build the EFI bootloader.
  zircon_efi_toolchain("efi_x64") {
    cpu = "x64"
  }

  zircon_efi_toolchain("efi_arm64") {
    cpu = "arm64"
  }
} else {
  assert(
      current_toolchain == "//zircon/bootloader:efi_${current_cpu}",
      "current_toolchain is ${current_toolchain} and should be efi_${current_cpu}")

  # This is the top config for all code in the efi_toolchain.
  config("efi_config") {
    configs = [
      "//build/config/zircon:standalone",
      "//build/config/zircon:no_sanitizers",

      # TODO: "$zx/kernel:warnings",
    ]
    include_dirs = [ "include" ]
    cflags = [
      "-std=c99",
      "-fshort-wchar",
    ]
  }

  # Any config listed in toolchain_variant must have a _deps group listing
  # extra dependencies for it.
  group("efi_config_deps") {
  }

  # TODO(digit): bootloader executable
}