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 absolute_import, print_function, unicode_literals
   6
   7 import codecs
   8 import io
   9 import itertools
  10 import logging
  11 import os
  12 import sys
  13 import textwrap
  14
  15
  16 try:
  17     from collections.abc import Iterable
  18 except ImportError:
  19     from collections import Iterable
  20
  21
  22 base_dir = os.path.abspath(os.path.dirname(__file__))
  23 sys.path.insert(0, os.path.join(base_dir, 'python', 'mozboot'))
  24 sys.path.insert(0, os.path.join(base_dir, 'python', 'mozbuild'))
  25 sys.path.insert(0, os.path.join(base_dir, 'third_party', 'python', 'six'))
  26 from mozbuild.configure import (
  27     ConfigureSandbox,
  28     TRACE,
  29 )
  30 from mozbuild.pythonutil import iter_modules_in_path
  31 from mozbuild.backend.configenvironment import PartialConfigEnvironment
  32 from mozbuild.util import (
  33     write_indented_repr,
  34 )
  35 import mozpack.path as mozpath
  36 import six
  37
  38
  39 def main(argv):
  40     config = {}
  41
  42     sandbox = ConfigureSandbox(config, os.environ, argv)
  43
  44     clobber_file = 'CLOBBER'
  45     if not os.path.exists(clobber_file):
  46         # Simply touch the file.
  47         with open(clobber_file, 'a'):
  48             pass
  49
  50     if os.environ.get('MOZ_CONFIGURE_TRACE'):
  51         sandbox._logger.setLevel(TRACE)
  52
  53     sandbox.run(os.path.join(os.path.dirname(__file__), 'moz.configure'))
  54
  55     if sandbox._help:
  56         return 0
  57
  58     return config_status(config)
  59
  60
  61 def check_unicode(obj):
  62     '''Recursively check that all strings in the object are unicode strings.'''
  63     if isinstance(obj, dict):
  64         result = True
  65         for k, v in six.iteritems(obj):
  66             if not check_unicode(k):
  67                 print("%s key is not unicode." % k, file=sys.stderr)
  68                 result = False
  69             elif not check_unicode(v):
  70                 print("%s value is not unicode." % k, file=sys.stderr)
  71                 result = False
  72         return result
  73     if isinstance(obj, bytes):
  74         return False
  75     if isinstance(obj, six.text_type):
  76         return True
  77     if isinstance(obj, Iterable):
  78         return all(check_unicode(o) for o in obj)
  79     return True
  80
  81
  82 def config_status(config):
  83     # Sanitize config data to feed config.status
  84     # Ideally, all the backend and frontend code would handle the booleans, but
  85     # there are so many things involved, that it's easier to keep config.status
  86     # untouched for now.
  87     def sanitize_config(v):
  88         if v is True:
  89             return '1'
  90         if v is False:
  91             return ''
  92         # Serialize types that look like lists and tuples as lists.
  93         if not isinstance(v, (bytes, six.text_type, dict)) and isinstance(v, Iterable):
  94             return list(v)
  95         return v
  96
  97     sanitized_config = {}
  98     sanitized_config['substs'] = {
  99         k: sanitize_config(v) for k, v in six.iteritems(config)
 100         if k not in ('DEFINES', 'non_global_defines', 'TOPSRCDIR', 'TOPOBJDIR',
 101                      'CONFIG_STATUS_DEPS')
 102     }
 103     sanitized_config['defines'] = {
 104         k: sanitize_config(v) for k, v in six.iteritems(config['DEFINES'])
 105     }
 106     sanitized_config['non_global_defines'] = config['non_global_defines']
 107     sanitized_config['topsrcdir'] = config['TOPSRCDIR']
 108     sanitized_config['topobjdir'] = config['TOPOBJDIR']
 109     sanitized_config['mozconfig'] = config.get('MOZCONFIG')
 110
 111     if not check_unicode(sanitized_config):
 112         print("Configuration should be all unicode.", file=sys.stderr)
 113         print("Please file a bug for the above.", file=sys.stderr)
 114         sys.exit(1)
 115
 116     # Create config.status. Eventually, we'll want to just do the work it does
 117     # here, when we're able to skip configure tests/use cached results/not rely
 118     # on autoconf.
 119     logging.getLogger('moz.configure').info('Creating config.status')
 120     with codecs.open('config.status', 'w', 'utf-8') as fh:
 121         fh.write(textwrap.dedent('''\
 122             #!%(python)s
 123             # coding=utf-8
 124             from __future__ import unicode_literals
 125         ''') % {'python': config['PYTHON3']})
 126         for k, v in sorted(six.iteritems(sanitized_config)):
 127             fh.write('%s = ' % k)
 128             write_indented_repr(fh, v)
 129         fh.write("__all__ = ['topobjdir', 'topsrcdir', 'defines', "
 130                  "'non_global_defines', 'substs', 'mozconfig']")
 131
 132         if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
 133             fh.write(textwrap.dedent('''
 134                 if __name__ == '__main__':
 135                     from mozbuild.util import patch_main
 136                     patch_main()
 137                     from mozbuild.config_status import config_status
 138                     args = dict([(name, globals()[name]) for name in __all__])
 139                     config_status(**args)
 140             '''))
 141
 142     partial_config = PartialConfigEnvironment(config['TOPOBJDIR'])
 143     partial_config.write_vars(sanitized_config)
 144
 145     # Write out a file so the build backend knows to re-run configure when
 146     # relevant Python changes.
 147     with io.open('config_status_deps.in', 'w', encoding='utf-8',
 148                  newline='\n') as fh:
 149         for f in sorted(
 150                 itertools.chain(config['CONFIG_STATUS_DEPS'],
 151                                 iter_modules_in_path(config['TOPOBJDIR'],
 152                                                      config['TOPSRCDIR']))):
 153             fh.write('%s\n' % mozpath.normpath(f))
 154
 155     # Other things than us are going to run this file, so we need to give it
 156     # executable permissions.
 157     os.chmod('config.status', 0o755)
 158     if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
 159         from mozbuild.config_status import config_status
 160
 161         # Some values in sanitized_config also have more complex types, such as
 162         # EnumString, which using when calling config_status would currently
 163         # break the build, as well as making it inconsistent with re-running
 164         # config.status, for which they are normalized to plain strings via
 165         # indented_repr. Likewise for non-dict non-string iterables being
 166         # converted to lists.
 167         def normalize(obj):
 168             if isinstance(obj, dict):
 169                 return {
 170                     k: normalize(v)
 171                     for k, v in six.iteritems(obj)
 172                 }
 173             if isinstance(obj, six.text_type):
 174                 return six.text_type(obj)
 175             if isinstance(obj, Iterable):
 176                 return [normalize(o) for o in obj]
 177             return obj
 178         return config_status(args=[], **normalize(sanitized_config))
 179     return 0
 180
 181
 182 if __name__ == '__main__':
 183     sys.exit(main(sys.argv))