build/config/clang/clang_target_toolchain_info.gni

# Copyright 2025 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.

assert(defined(clang_toolchain_info))

# This file defines clang_target_toolchain_info to point to the scope
# value from clang_toolchain_info.<clang_target_key> where
# <clang_target_key> is the scope key corresponding to the current
# Clang target tuple (or "fallback" if not supported by the input scope).

# Unlike clang_toolchain_info.gni, this file can be imported outside
# of //build/config/BUILDCONFIG.gn.
import("//build/config/clang/clang_toolchain_info.gni")
import("//build/config/current_target_tuple.gni")

# A convenience scope exposing the clang_toolchain_info values
# corresponding to the current Clang target tuple.
_clang_target_key = string_replace(current_target_tuple, "-", "_")
if (defined(clang_toolchain_info[_clang_target_key])) {
  clang_target_toolchain_info = clang_toolchain_info[_clang_target_key]
} else {
  # This target tuple is not covered by clang_toolchain_info. This happens
  # for weird combinations like "aarch64-pc-windows-msvc" which are used
  # for the EFI bootloader. In this case, use the fallback version.
  clang_target_toolchain_info = clang_toolchain_info["fallback"]
}