1# Copyright (c) 2017 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5# This header file defines the "host_byteorder" variable.
6# Not that this is currently used only for building v8.
7# The chromium code generally assumes little-endianness.
8declare_args() {
9  host_byteorder = "undefined"
10}
11
12# Detect host byteorder
13# ppc64 can be either BE or LE
14if (host_cpu == "ppc64") {
15  if (current_os == "aix") {
16    host_byteorder = "big"
17  } else {
18    # Only use the script when absolutely necessary
19    host_byteorder =
20        exec_script("//build/config/get_host_byteorder.py", [], "trim string")
21  }
22} else if (host_cpu == "ppc" || host_cpu == "s390" || host_cpu == "s390x" ||
23           host_cpu == "mips" || host_cpu == "mips64") {
24  host_byteorder = "big"
25} else {
26  host_byteorder = "little"
27}
28