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94 lines
2.9 KiB
94 lines
2.9 KiB
# Copyright 2016 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import contextlib
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import os
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import sys
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from pylib import constants
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DIR_SOURCE_ROOT = os.environ.get(
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'CHECKOUT_SOURCE_ROOT',
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os.path.abspath(os.path.join(os.path.dirname(__file__),
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os.pardir, os.pardir, os.pardir, os.pardir)))
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BUILD_COMMON_PATH = os.path.join(
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DIR_SOURCE_ROOT, 'build', 'util', 'lib', 'common')
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# third-party libraries
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ANDROID_PLATFORM_DEVELOPMENT_SCRIPTS_PATH = os.path.join(
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DIR_SOURCE_ROOT, 'third_party', 'android_platform', 'development',
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'scripts')
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DEVIL_PATH = os.path.join(
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DIR_SOURCE_ROOT, 'third_party', 'catapult', 'devil')
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PYMOCK_PATH = os.path.join(
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DIR_SOURCE_ROOT, 'third_party', 'pymock')
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@contextlib.contextmanager
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def SysPath(path, position=None):
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if position is None:
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sys.path.append(path)
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else:
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sys.path.insert(position, path)
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try:
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yield
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finally:
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if sys.path[-1] == path:
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sys.path.pop()
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else:
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sys.path.remove(path)
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# Map of CPU architecture name to (toolchain_name, binprefix) pairs.
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# TODO(digit): Use the build_vars.txt file generated by gn.
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_TOOL_ARCH_MAP = {
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'arm': ('arm-linux-androideabi-4.9', 'arm-linux-androideabi'),
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'arm64': ('aarch64-linux-android-4.9', 'aarch64-linux-android'),
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'x86': ('x86-4.9', 'i686-linux-android'),
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'x86_64': ('x86_64-4.9', 'x86_64-linux-android'),
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'x64': ('x86_64-4.9', 'x86_64-linux-android'),
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'mips': ('mipsel-linux-android-4.9', 'mipsel-linux-android'),
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}
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# Cache used to speed up the results of ToolPath()
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# Maps (arch, tool_name) pairs to fully qualified program paths.
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# Useful because ToolPath() is called repeatedly for demangling C++ symbols.
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_cached_tool_paths = {}
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def ToolPath(tool, cpu_arch):
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"""Return a fully qualifed path to an arch-specific toolchain program.
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Args:
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tool: Unprefixed toolchain program name (e.g. 'objdump')
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cpu_arch: Target CPU architecture (e.g. 'arm64')
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Returns:
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Fully qualified path (e.g. ..../aarch64-linux-android-objdump')
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Raises:
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Exception if the toolchain could not be found.
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"""
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tool_path = _cached_tool_paths.get((tool, cpu_arch))
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if tool_path:
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return tool_path
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toolchain_source, toolchain_prefix = _TOOL_ARCH_MAP.get(
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cpu_arch, (None, None))
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if not toolchain_source:
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raise Exception('Could not find tool chain for ' + cpu_arch)
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toolchain_subdir = (
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'toolchains/%s/prebuilt/linux-x86_64/bin' % toolchain_source)
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tool_path = os.path.join(constants.ANDROID_NDK_ROOT,
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toolchain_subdir,
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toolchain_prefix + '-' + tool)
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_cached_tool_paths[(tool, cpu_arch)] = tool_path
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return tool_path
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def GetAaptPath():
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"""Returns the path to the 'aapt' executable."""
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return os.path.join(constants.ANDROID_SDK_TOOLS, 'aapt')
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