mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
138 lines
4.0 KiB
Python
138 lines
4.0 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# This script is used to capture the content of config.status-generated
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# files and subsequently restore their timestamp if they haven't changed.
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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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import pickle
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class File(object):
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def __init__(self, path):
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self._path = path
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self._content = open(path, 'rb').read()
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stat = os.stat(path)
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self._times = (stat.st_atime, stat.st_mtime)
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@property
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def path(self):
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return self._path
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@property
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def mtime(self):
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return self._times[1]
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def update_time(self):
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'''If the file hasn't changed since the instance was created,
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restore its old modification time.'''
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if not os.path.exists(self._path):
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return
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if open(self._path, 'rb').read() == self._content:
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os.utime(self._path, self._times)
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# As defined in the various sub-configures in the tree
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PRECIOUS_VARS = set([
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'build_alias',
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'host_alias',
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'target_alias',
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'CC',
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'CFLAGS',
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'LDFLAGS',
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'LIBS',
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'CPPFLAGS',
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'CPP',
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'CCC',
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'CXXFLAGS',
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'CXX',
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'CCASFLAGS',
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'CCAS',
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])
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# Autoconf, in some of the sub-configures used in the tree, likes to error
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# out when "precious" variables change in value. The solution it gives to
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# straighten things is to either run make distclean or remove config.cache.
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# There's no reason not to do the latter automatically instead of failing,
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# doing the cleanup (which, on buildbots means a full clobber), and
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# restarting from scratch.
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def maybe_clear_cache():
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comment = re.compile(r'^\s+#')
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cache = {}
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with open('config.cache') as f:
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for line in f.readlines():
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if not comment.match(line) and '=' in line:
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key, value = line.split('=', 1)
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cache[key] = value
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for precious in PRECIOUS_VARS:
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entry = 'ac_cv_env_%s_value' % precious
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if entry in cache and (not precious in os.environ or os.environ[precious] != cache[entry]):
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os.remove('config.cache')
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return
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def dump(dump_file, shell):
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if os.path.exists('config.cache'):
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maybe_clear_cache()
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if not os.path.exists('config.status'):
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if os.path.exists(dump_file):
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os.remove(dump_file)
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return
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config_files = [File('config.status')]
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# Scan the config.status output for information about configuration files
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# it generates.
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config_status_output = subprocess.check_output(
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[shell, '-c', './config.status --help'],
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stderr=subprocess.STDOUT).splitlines()
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state = None
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for line in config_status_output:
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if line.startswith('Configuration') and line.endswith(':'):
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state = 'config'
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elif not line.startswith(' '):
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state = None
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elif state == 'config':
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for f in (couple.split(':')[0] for couple in line.split()):
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if os.path.isfile(f):
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config_files.append(File(f))
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with open(dump_file, 'wb') as f:
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pickle.dump(config_files, f)
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def adjust(dump_file, configure):
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if not os.path.exists(dump_file):
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return
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config_files = []
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try:
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with open(dump_file, 'rb') as f:
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config_files = pickle.load(f)
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except Exception:
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pass
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for f in config_files:
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# Still touch config.status if configure is newer than its original
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# mtime.
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if configure and os.path.basename(f.path) == 'config.status' and \
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os.path.getmtime(configure) > f.mtime:
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continue
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f.update_time()
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os.remove(dump_file)
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CONFIG_DUMP = 'config_files.pkl'
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if __name__ == '__main__':
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if sys.argv[1] == 'dump':
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dump(CONFIG_DUMP, sys.argv[2])
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elif sys.argv[1] == 'adjust':
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adjust(CONFIG_DUMP, sys.argv[2] if len(sys.argv) > 2 else None)
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