configure.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 from __future__ import print_function, unicode_literals
   6
   7 import codecs
   8 import itertools
   9 import logging
  10 import os
  11 import sys
  12 import textwrap
  13
  14
  15 base_dir = os.path.abspath(os.path.dirname(__file__))
  16 sys.path.insert(0, os.path.join(base_dir, 'python', 'mozbuild'))
  17 from mozbuild.configure import ConfigureSandbox
  18 from mozbuild.pythonutil import iter_modules_in_path
  19 from mozbuild.backend.configenvironment import PartialConfigEnvironment
  20 from mozbuild.util import (
  21     indented_repr,
  22     encode,
  23 )
  24 import mozpack.path as mozpath
  25
  26
  27 def main(argv):
  28     config = {}
  29     sandbox = ConfigureSandbox(config, os.environ, argv)
  30     sandbox.run(os.path.join(os.path.dirname(__file__), 'moz.configure'))
  31
  32     if sandbox._help:
  33         return 0
  34
  35     return config_status(config)
  36
  37
  38 def config_status(config):
  39     # Sanitize config data to feed config.status
  40     # Ideally, all the backend and frontend code would handle the booleans, but
  41     # there are so many things involved, that it's easier to keep config.status
  42     # untouched for now.
  43     def sanitized_bools(v):
  44         if v is True:
  45             return '1'
  46         if v is False:
  47             return ''
  48         return v
  49
  50     sanitized_config = {}
  51     sanitized_config['substs'] = {
  52         k: sanitized_bools(v) for k, v in config.iteritems()
  53         if k not in ('DEFINES', 'non_global_defines', 'TOPSRCDIR', 'TOPOBJDIR',
  54                      'CONFIG_STATUS_DEPS')
  55     }
  56     sanitized_config['defines'] = {
  57         k: sanitized_bools(v) for k, v in config['DEFINES'].iteritems()
  58     }
  59     sanitized_config['non_global_defines'] = config['non_global_defines']
  60     sanitized_config['topsrcdir'] = config['TOPSRCDIR']
  61     sanitized_config['topobjdir'] = config['TOPOBJDIR']
  62     sanitized_config['mozconfig'] = config.get('MOZCONFIG')
  63
  64     # Create config.status. Eventually, we'll want to just do the work it does
  65     # here, when we're able to skip configure tests/use cached results/not rely
  66     # on autoconf.
  67     logging.getLogger('moz.configure').info('Creating config.status')
  68     encoding = 'mbcs' if sys.platform == 'win32' else 'utf-8'
  69     with codecs.open('config.status', 'w', encoding) as fh:
  70         fh.write(textwrap.dedent('''\
  71             #!%(python)s
  72             # coding=%(encoding)s
  73             from __future__ import unicode_literals
  74             from mozbuild.util import encode
  75             encoding = '%(encoding)s'
  76         ''') % {'python': config['PYTHON'], 'encoding': encoding})
  77         # A lot of the build backend code is currently expecting byte
  78         # strings and breaks in subtle ways with unicode strings. (bug 1296508)
  79         for k, v in sanitized_config.iteritems():
  80             fh.write('%s = encode(%s, encoding)\n' % (k, indented_repr(v)))
  81         fh.write("__all__ = ['topobjdir', 'topsrcdir', 'defines', "
  82                  "'non_global_defines', 'substs', 'mozconfig']")
  83
  84         if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
  85             fh.write(textwrap.dedent('''
  86                 if __name__ == '__main__':
  87                     from mozbuild.util import patch_main
  88                     patch_main()
  89                     from mozbuild.config_status import config_status
  90                     args = dict([(name, globals()[name]) for name in __all__])
  91                     config_status(**args)
  92             '''))
  93
  94     partial_config = PartialConfigEnvironment(config['TOPOBJDIR'])
  95     partial_config.write_vars(sanitized_config)
  96
  97     # Write out a file so the build backend knows to re-run configure when
  98     # relevant Python changes.
  99     with open('config_status_deps.in', 'w') as fh:
 100         for f in itertools.chain(config['CONFIG_STATUS_DEPS'],
 101                                  iter_modules_in_path(config['TOPOBJDIR'],
 102                                                       config['TOPSRCDIR'])):
 103             fh.write('%s\n' % mozpath.normpath(f))
 104
 105     # Other things than us are going to run this file, so we need to give it
 106     # executable permissions.
 107     os.chmod('config.status', 0o755)
 108     if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
 109         from mozbuild.config_status import config_status
 110
 111         # Some values in sanitized_config also have more complex types, such as
 112         # EnumString, which using when calling config_status would currently
 113         # break the build, as well as making it inconsistent with re-running
 114         # config.status. Fortunately, EnumString derives from unicode, so it's
 115         # covered by converting unicode strings.
 116
 117         # A lot of the build backend code is currently expecting byte strings
 118         # and breaks in subtle ways with unicode strings.
 119         return config_status(args=[], **encode(sanitized_config, encoding))
 120     return 0
 121
 122
 123 if __name__ == '__main__':
 124     sys.exit(main(sys.argv))