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dart-sdk/build/detect_host_arch.py
Alexander Thomas b5c63ce757 [infra] Migrate scripts to python3
* Migrate to python3; drop python support.
* Update Windows toolchain support.
* Remove some unused methods.
* Python 2.7 is still needed on Windows.
* Update gsutil to a version that supports python3.

Fixes: https://github.com/dart-lang/sdk/issues/28793

TEST=Manually tested common user journeys.

Change-Id: I663a22b237a548bb82dc2e601e399e3bc3649211
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192182
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
2021-04-15 10:10:20 +00:00

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Python
Executable File

#!/usr/bin/env python3
# Copyright 2014 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.
"""Outputs host CPU architecture in format recognized by gyp."""
import platform
import re
import sys
def HostArch():
"""Returns the host architecture with a predictable string."""
host_arch = platform.machine()
# Convert machine type to format recognized by gyp.
if re.match(r'i.86', host_arch) or host_arch == 'i86pc':
host_arch = 'ia32'
elif host_arch in ['x86_64', 'amd64']:
host_arch = 'x64'
elif host_arch.startswith('arm'):
host_arch = 'arm'
elif host_arch.startswith('aarch64'):
host_arch = 'arm64'
elif host_arch.startswith('mips'):
host_arch = 'mips'
elif host_arch.startswith('ppc'):
host_arch = 'ppc'
elif host_arch.startswith('s390'):
host_arch = 's390'
# platform.machine is based on running kernel. It's possible to use 64-bit
# kernel with 32-bit userland, e.g. to give linker slightly more memory.
# Distinguish between different userland bitness by querying
# the python binary.
if host_arch == 'x64' and platform.architecture()[0] == '32bit':
host_arch = 'ia32'
if host_arch == 'arm64' and platform.architecture()[0] == '32bit':
host_arch = 'arm'
return host_arch
def DoMain(_):
"""Hook to be called from gyp without starting a separate python
interpreter."""
return HostArch()
if __name__ == '__main__':
print(DoMain([]))