| # Copyright 2018 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. |
| |
| import os |
| import platform |
| import sys |
| |
| DIR_SOURCE_ROOT = os.path.abspath( |
| os.path.join(os.path.dirname(__file__), os.pardir, os.pardir)) |
| SDK_ROOT = os.path.join(DIR_SOURCE_ROOT, 'third_party', 'fuchsia-sdk', 'sdk') |
| |
| def EnsurePathExists(path): |
| """Checks that the file |path| exists on the filesystem and returns the path |
| if it does, raising an exception otherwise.""" |
| |
| if not os.path.exists(path): |
| raise IOError('Missing file: ' + path) |
| |
| return path |
| |
| def GetHostOsFromPlatform(): |
| host_platform = sys.platform |
| if host_platform.startswith('linux'): |
| return 'linux' |
| elif host_platform.startswith('darwin'): |
| return 'mac' |
| raise Exception('Unsupported host platform: %s' % host_platform) |
| |
| def GetHostArchFromPlatform(): |
| host_arch = platform.machine() |
| if host_arch == 'x86_64': |
| return 'x64' |
| elif host_arch == 'aarch64': |
| return 'arm64' |
| raise Exception('Unsupported host architecture: %s' % host_arch) |
| |
| def GetQemuRootForPlatform(): |
| return os.path.join(DIR_SOURCE_ROOT, 'third_party', |
| 'qemu-' + GetHostOsFromPlatform() + '-' + |
| GetHostArchFromPlatform()) |
