# Copyright 2017 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/toolchain.gni")

declare_args() {
  # Enable Clang's Source-based Code Coverage. This should not be used with
  # is_component_build=true.
  # TODO(metzman): Add an assertion that will prevent is_component_build=true
  # from being passed as an argument to gn, but will not force toolchains that
  # set is_component_build=true to set it to false.
  use_clang_coverage = false
}

assert(!use_clang_coverage || is_clang,
       "Clang Source-based Code Coverage requires clang.")

assert(
    !(use_clang_coverage && is_component_build),
    "Clang Source-based Code Coverage requires \"is_component_build=false\" " +
        "flag because: There will be no coverage info for libraries in " +
        "component builds and \"is_component_build\" is set to true by " +
        "\"is_debug\" unless it is explicitly set to false.$0x0ATry adding " +
        "\"is_component_build=false\" to your GN args.")