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# Copyright 2013 Ben Longbons <b.r.longbons@gmail.com>
#
# This file is part of attoconf.
#
# attoconf is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# attoconf is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with attoconf. If not, see <http://www.gnu.org/licenses/>.
from __future__ import print_function, division, absolute_import
from hashlib import md5
import os
from ..classy import ClassyProject
def calc_hash(build):
hash = md5()
for var, (val, origin), in sorted(build.vars.iteritems()):
# origin is not included in the hash
hash.update('%s = %s\n' % (var, val))
return hash.hexdigest()
def add_config_hash(build):
print('Generating a hash of config options ...')
build.vars['CONFIG_HASH'] = (calc_hash(build), 'special')
class ConfigHash(ClassyProject):
''' Post hook add the build hash.
This should be run before any other post hooks.
'''
__slots__ = ()
def post(self):
self.order.insert(0, 'CONFIG_HASH')
self.checks.append(add_config_hash)
super(ConfigHash, self).post()
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