| # Copyright (c) 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. | |
| # This header file defines the "host_byteorder" variable. | |
| # Not that this is currently used only for building v8. | |
| # The chromium code generally assumes little-endianness. | |
| declare_args() { | |
| host_byteorder = "undefined" | |
| } | |
| # Detect host byteorder | |
| # ppc64 can be either BE or LE | |
| if (host_cpu == "ppc64") { | |
| if (current_os == "aix") { | |
| host_byteorder = "big" | |
| } else { | |
| # Only use the script when absolutely necessary | |
| host_byteorder = | |
| exec_script("//build/config/get_host_byteorder.py", [], "trim string") | |
| } | |
| } else if (host_cpu == "ppc" || host_cpu == "s390" || host_cpu == "s390x") { | |
| host_byteorder = "big" | |
| } else { | |
| host_byteorder = "little" | |
| } |