| # 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. |
| |
| # Originally from v8, included in our repository as the ICU third party |
| # import depends on it for building. |
| |
| # 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_cpu == "mips" || host_cpu == "mips64") { |
| host_byteorder = "big" |
| } else { |
| host_byteorder = "little" |
| } |