# Copyright 2023 The Cobalt Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//build/config/win/visual_studio_version.gni")
import("//build/toolchain/gcc_toolchain.gni")

template("cobalt_clang_toolchain") {
  gcc_toolchain(target_name) {
    forward_variables_from(invoker,
                           [
                             "native_linker_path",
                             "executable_extension",
                             "tail_lib_dependencies",
                           ])
    if (defined(invoker.shlib_extension)) {
      shlib_extension = invoker.shlib_extension
    }
    assert(defined(native_linker_path),
           "native_linker_path has to be defined by the platform")
    if (!is_host_win) {
      prefix = rebase_path("$clang_base_path/bin", root_build_dir)
      cc = "$prefix/clang"
      cxx = "$prefix/clang++"
      ld = native_linker_path
      readelf = "readelf"
      ar = "${prefix}/llvm-ar"
      nm = "nm"
    } else {
      prefix = llvm_clang_path
      cc = "$prefix/clang.exe"
      cxx = "$prefix/clang++.exe"
      ld = native_linker_path
      readelf = "$prefix/llvm-readobj.exe"
      ar = "${prefix}/llvm-ar.exe"
      nm = "${prefix}/llvm-nm.exe"
    }
    toolchain_args = {
      if (defined(invoker.toolchain_args)) {
        forward_variables_from(invoker.toolchain_args, "*")
      }
      is_clang = true
    }
  }
}