410 lines
15 KiB
Python
Vendored
410 lines
15 KiB
Python
Vendored
# MIT License
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#
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# Copyright The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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"""
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Common helper functions for working with the Microsoft tool chain.
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"""
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import copy
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import json
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import os
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import re
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import subprocess
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import sys
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from contextlib import suppress
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from pathlib import Path
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import SCons.Util
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import SCons.Warnings
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class MSVCCacheInvalidWarning(SCons.Warnings.WarningOnByDefault):
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pass
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# SCONS_MSCOMMON_DEBUG is internal-use so undocumented:
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# set to '-' to print to console, else set to filename to log to
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LOGFILE = os.environ.get('SCONS_MSCOMMON_DEBUG')
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if LOGFILE:
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import logging
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modulelist = (
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# root module and parent/root module
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'MSCommon', 'Tool',
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# python library and below: correct iff scons does not have a lib folder
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'lib',
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# scons modules
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'SCons', 'test', 'scons'
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)
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def get_relative_filename(filename, module_list):
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if not filename:
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return filename
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for module in module_list:
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try:
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ind = filename.rindex(module)
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return filename[ind:]
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except ValueError:
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pass
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return filename
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class _Debug_Filter(logging.Filter):
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# custom filter for module relative filename
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def filter(self, record):
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relfilename = get_relative_filename(record.pathname, modulelist)
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relfilename = relfilename.replace('\\', '/')
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record.relfilename = relfilename
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return True
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# Log format looks like:
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# 00109ms:MSCommon/vc.py:find_vc_pdir#447: VC found '14.3' [file]
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# debug: 00109ms:MSCommon/vc.py:find_vc_pdir#447: VC found '14.3' [stdout]
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log_format=(
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'%(relativeCreated)05dms'
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':%(relfilename)s'
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':%(funcName)s'
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'#%(lineno)s'
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': %(message)s'
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)
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if LOGFILE == '-':
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log_format = 'debug: ' + log_format
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log_handler = logging.StreamHandler(sys.stdout)
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else:
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log_handler = logging.FileHandler(filename=LOGFILE)
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log_formatter = logging.Formatter(log_format)
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log_handler.setFormatter(log_formatter)
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logger = logging.getLogger(name=__name__)
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logger.setLevel(level=logging.DEBUG)
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logger.addHandler(log_handler)
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logger.addFilter(_Debug_Filter())
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debug = logger.debug
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else:
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def debug(x, *args):
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return None
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# SCONS_CACHE_MSVC_CONFIG is public, and is documented.
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CONFIG_CACHE = os.environ.get('SCONS_CACHE_MSVC_CONFIG')
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if CONFIG_CACHE in ('1', 'true', 'True'):
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CONFIG_CACHE = os.path.join(os.path.expanduser('~'), 'scons_msvc_cache.json')
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# SCONS_CACHE_MSVC_FORCE_DEFAULTS is internal-use so undocumented.
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CONFIG_CACHE_FORCE_DEFAULT_ARGUMENTS = False
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if CONFIG_CACHE:
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if os.environ.get('SCONS_CACHE_MSVC_FORCE_DEFAULTS') in ('1', 'true', 'True'):
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CONFIG_CACHE_FORCE_DEFAULT_ARGUMENTS = True
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def read_script_env_cache():
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""" fetch cached msvc env vars if requested, else return empty dict """
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envcache = {}
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if CONFIG_CACHE:
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try:
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p = Path(CONFIG_CACHE)
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with p.open('r') as f:
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# Convert the list of cache entry dictionaries read from
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# json to the cache dictionary. Reconstruct the cache key
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# tuple from the key list written to json.
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envcache_list = json.load(f)
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if isinstance(envcache_list, list):
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envcache = {tuple(d['key']): d['data'] for d in envcache_list}
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else:
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# don't fail if incompatible format, just proceed without it
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warn_msg = "Incompatible format for msvc cache file {}: file may be overwritten.".format(
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repr(CONFIG_CACHE)
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)
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SCons.Warnings.warn(MSVCCacheInvalidWarning, warn_msg)
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debug(warn_msg)
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except FileNotFoundError:
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# don't fail if no cache file, just proceed without it
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pass
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return envcache
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def write_script_env_cache(cache):
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""" write out cache of msvc env vars if requested """
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if CONFIG_CACHE:
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try:
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p = Path(CONFIG_CACHE)
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with p.open('w') as f:
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# Convert the cache dictionary to a list of cache entry
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# dictionaries. The cache key is converted from a tuple to
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# a list for compatibility with json.
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envcache_list = [{'key': list(key), 'data': data} for key, data in cache.items()]
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json.dump(envcache_list, f, indent=2)
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except TypeError:
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# data can't serialize to json, don't leave partial file
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with suppress(FileNotFoundError):
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p.unlink()
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except IOError:
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# can't write the file, just skip
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pass
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_is_win64 = None
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def is_win64():
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"""Return true if running on windows 64 bits.
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Works whether python itself runs in 64 bits or 32 bits."""
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# Unfortunately, python does not provide a useful way to determine
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# if the underlying Windows OS is 32-bit or 64-bit. Worse, whether
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# the Python itself is 32-bit or 64-bit affects what it returns,
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# so nothing in sys.* or os.* help.
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# Apparently the best solution is to use env vars that Windows
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# sets. If PROCESSOR_ARCHITECTURE is not x86, then the python
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# process is running in 64 bit mode (on a 64-bit OS, 64-bit
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# hardware, obviously).
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# If this python is 32-bit but the OS is 64, Windows will set
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# ProgramW6432 and PROCESSOR_ARCHITEW6432 to non-null.
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# (Checking for HKLM\Software\Wow6432Node in the registry doesn't
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# work, because some 32-bit installers create it.)
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global _is_win64
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if _is_win64 is None:
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# I structured these tests to make it easy to add new ones or
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# add exceptions in the future, because this is a bit fragile.
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_is_win64 = False
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if os.environ.get('PROCESSOR_ARCHITECTURE', 'x86') != 'x86':
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_is_win64 = True
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if os.environ.get('PROCESSOR_ARCHITEW6432'):
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_is_win64 = True
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if os.environ.get('ProgramW6432'):
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_is_win64 = True
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return _is_win64
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def read_reg(value, hkroot=SCons.Util.HKEY_LOCAL_MACHINE):
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return SCons.Util.RegGetValue(hkroot, value)[0]
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def has_reg(value):
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"""Return True if the given key exists in HKEY_LOCAL_MACHINE, False
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otherwise."""
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try:
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SCons.Util.RegOpenKeyEx(SCons.Util.HKEY_LOCAL_MACHINE, value)
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ret = True
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except OSError:
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ret = False
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return ret
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# Functions for fetching environment variable settings from batch files.
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def normalize_env(env, keys, force=False):
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"""Given a dictionary representing a shell environment, add the variables
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from os.environ needed for the processing of .bat files; the keys are
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controlled by the keys argument.
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It also makes sure the environment values are correctly encoded.
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If force=True, then all of the key values that exist are copied
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into the returned dictionary. If force=false, values are only
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copied if the key does not already exist in the copied dictionary.
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Note: the environment is copied."""
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normenv = {}
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if env:
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for k, v in env.items():
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normenv[k] = copy.deepcopy(v)
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for k in keys:
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if k in os.environ and (force or k not in normenv):
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normenv[k] = os.environ[k]
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# add some things to PATH to prevent problems:
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# Shouldn't be necessary to add system32, since the default environment
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# should include it, but keep this here to be safe (needed for reg.exe)
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sys32_dir = os.path.join(
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os.environ.get("SystemRoot", os.environ.get("windir", r"C:\Windows")), "System32"
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)
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if sys32_dir not in normenv["PATH"]:
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normenv["PATH"] = normenv["PATH"] + os.pathsep + sys32_dir
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# Without Wbem in PATH, vcvarsall.bat has a "'wmic' is not recognized"
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# error starting with Visual Studio 2017, although the script still
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# seems to work anyway.
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sys32_wbem_dir = os.path.join(sys32_dir, 'Wbem')
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if sys32_wbem_dir not in normenv['PATH']:
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normenv['PATH'] = normenv['PATH'] + os.pathsep + sys32_wbem_dir
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# Without Powershell in PATH, an internal call to a telemetry
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# function (starting with a VS2019 update) can fail
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# Note can also set VSCMD_SKIP_SENDTELEMETRY to avoid this.
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sys32_ps_dir = os.path.join(sys32_dir, r'WindowsPowerShell\v1.0')
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if sys32_ps_dir not in normenv['PATH']:
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normenv['PATH'] = normenv['PATH'] + os.pathsep + sys32_ps_dir
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debug("PATH: %s", normenv['PATH'])
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return normenv
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def get_output(vcbat, args=None, env=None):
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"""Parse the output of given bat file, with given args."""
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if env is None:
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# Create a blank environment, for use in launching the tools
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env = SCons.Environment.Environment(tools=[])
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# TODO: Hard-coded list of the variables that (may) need to be
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# imported from os.environ[] for the chain of development batch
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# files to execute correctly. One call to vcvars*.bat may
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# end up running a dozen or more scripts, changes not only with
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# each release but with what is installed at the time. We think
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# in modern installations most are set along the way and don't
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# need to be picked from the env, but include these for safety's sake.
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# Any VSCMD variables definitely are picked from the env and
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# control execution in interesting ways.
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# Note these really should be unified - either controlled by vs.py,
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# or synced with the the common_tools_var # settings in vs.py.
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vs_vc_vars = [
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'COMSPEC', # path to "shell"
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'OS', # name of OS family: Windows_NT or undefined (95/98/ME)
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'VS170COMNTOOLS', # path to common tools for given version
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'VS160COMNTOOLS',
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'VS150COMNTOOLS',
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'VS140COMNTOOLS',
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'VS120COMNTOOLS',
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'VS110COMNTOOLS',
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'VS100COMNTOOLS',
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'VS90COMNTOOLS',
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'VS80COMNTOOLS',
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'VS71COMNTOOLS',
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'VSCOMNTOOLS',
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'MSDevDir',
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'VSCMD_DEBUG', # enable logging and other debug aids
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'VSCMD_SKIP_SENDTELEMETRY',
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'windir', # windows directory (SystemRoot not available in 95/98/ME)
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]
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env['ENV'] = normalize_env(env['ENV'], vs_vc_vars, force=False)
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if args:
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debug("Calling '%s %s'", vcbat, args)
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popen = SCons.Action._subproc(env,
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'"%s" %s & set' % (vcbat, args),
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stdin='devnull',
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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else:
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debug("Calling '%s'", vcbat)
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popen = SCons.Action._subproc(env,
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'"%s" & set' % vcbat,
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stdin='devnull',
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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# Use the .stdout and .stderr attributes directly because the
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# .communicate() method uses the threading module on Windows
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# and won't work under Pythons not built with threading.
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with popen.stdout:
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stdout = popen.stdout.read()
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with popen.stderr:
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stderr = popen.stderr.read()
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# Extra debug logic, uncomment if necessary
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# debug('stdout:%s', stdout)
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# debug('stderr:%s', stderr)
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# Ongoing problems getting non-corrupted text led to this
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# changing to "oem" from "mbcs" - the scripts run presumably
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# attached to a console, so some particular rules apply.
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# Unfortunately, "oem" not defined in Python 3.5, so get another way
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if sys.version_info.major == 3 and sys.version_info.minor < 6:
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from ctypes import windll
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OEM = "cp{}".format(windll.kernel32.GetConsoleOutputCP())
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else:
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OEM = "oem"
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if stderr:
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# TODO: find something better to do with stderr;
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# this at least prevents errors from getting swallowed.
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sys.stderr.write(stderr.decode(OEM))
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if popen.wait() != 0:
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raise IOError(stderr.decode(OEM))
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return stdout.decode(OEM)
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KEEPLIST = (
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"INCLUDE",
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"LIB",
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"LIBPATH",
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"PATH",
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"VSCMD_ARG_app_plat",
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"VCINSTALLDIR", # needed by clang -VS 2017 and newer
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"VCToolsInstallDir", # needed by clang - VS 2015 and older
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)
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def parse_output(output, keep=KEEPLIST):
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"""
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Parse output from running visual c++/studios vcvarsall.bat and running set
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To capture the values listed in keep
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"""
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# dkeep is a dict associating key: path_list, where key is one item from
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# keep, and path_list the associated list of paths
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dkeep = {i: [] for i in keep}
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# rdk will keep the regex to match the .bat file output line starts
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rdk = {}
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for i in keep:
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rdk[i] = re.compile('%s=(.*)' % i, re.I)
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def add_env(rmatch, key, dkeep=dkeep):
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path_list = rmatch.group(1).split(os.pathsep)
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for path in path_list:
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# Do not add empty paths (when a var ends with ;)
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if path:
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# XXX: For some reason, VC98 .bat file adds "" around the PATH
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# values, and it screws up the environment later, so we strip
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# it.
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path = path.strip('"')
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dkeep[key].append(str(path))
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for line in output.splitlines():
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for k, value in rdk.items():
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match = value.match(line)
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if match:
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add_env(match, k)
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return dkeep
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def get_pch_node(env, target, source):
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"""
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Get the actual PCH file node
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"""
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pch_subst = env.get('PCH', False) and env.subst('$PCH',target=target, source=source, conv=lambda x:x)
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if not pch_subst:
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return ""
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if SCons.Util.is_String(pch_subst):
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pch_subst = target[0].dir.File(pch_subst)
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return pch_subst
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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