# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

declare_args() {
  # The OS build is running on.
  OS = ""

  # Specifies pkg-config program to retrieve information about packages.
  pkg_config = ""

  # The logical root directory for headers and libraries.
  sysroot = ""

  # The libdir of the target board. e.g. /usr/lib64
  libdir = ""

  # The path to the directory where build artifacts are located.
  build_root = ""

  # The path to src/platform2.
  platform2_root = ""

  # Libbase revision number read from BASE_VER variable or file.
  libbase_ver = ""

  # Set true to allow C++ code to use exceptions.
  enable_exceptions = false

  # Additional flags for C compiler.
  external_cflags = []

  # Additional flags for C++ compiler.
  external_cxxflags = []

  # Additional flags for C and C++ preprocessor.
  external_cppflags = []

  # Additional flags for C and C++ linker.
  external_ldflags = []
}
import("//common-mk/use.gni")

assert(pkg_config != "", "pkg-config script path must be set")
assert(libbase_ver != -1, "libbase_ver must be set")
assert(libdir != "", "libdir must be set")

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
}

# All binary targets will get this list of configs by default.
_binary_target_configs = [ "//common-mk:compiler_defaults" ]

if (!enable_exceptions) {
  _binary_target_configs += [ "//common-mk:no_exceptions" ]
}

set_defaults("executable") {
  configs = _binary_target_configs
  configs += [ "//common-mk:pie" ]
}

set_defaults("static_library") {
  configs = _binary_target_configs
  configs += [
    "//common-mk:pie",
    "//common-mk:use_thin_archive",
  ]
}

set_defaults("shared_library") {
  configs = _binary_target_configs
  configs += [ "//common-mk:pic" ]
}

set_defaults("source_set") {
  configs = _binary_target_configs
}

set_default_toolchain("//common-mk/toolchain")