build/toolchain/zircon/gcc.gni

# 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.

_prebuilt_gcc_dir = "//prebuilt/third_party/gcc/$host_platform"

_prebuilt_cipd_version =
    read_file("$_prebuilt_gcc_dir/.versions/gcc.cipd_version", "json")

declare_args() {
  # Directory where the GCC toolchain binaries ("gcc", "nm", etc.) are found.
  # This directory is expected to contain `aarch64-elf-*` and `x86_64-elf-*`
  # tools used to build for the Fuchsia targets.  This directory will not be
  # used for host tools.  If this is "", then a standard prebuilt is used.
  gcc_tool_dir = ""
}

# This is a string identifying the particular toolchain version in use.  Its
# only purpose is to be unique enough that it changes when switching to a new
# toolchain, so that recompilations with the new compiler can be triggered.
gcc_version_string = gcc_tool_dir

if (gcc_tool_dir == "") {
  gcc_tool_dir = "$_prebuilt_gcc_dir/bin"
  gcc_version_string = _prebuilt_cipd_version.instance_id
}