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', 'TOPSRCDIR', 'TOPOBJDIR', 'CONFIG_STATUS_DEPS')
 101     }
 102     sanitized_config['defines'] = {
 103         k: sanitize_config(v) for k, v in six.iteritems(config['DEFINES'])
 104     }
 105     sanitized_config['topsrcdir'] = config['TOPSRCDIR']
 106     sanitized_config['topobjdir'] = config['TOPOBJDIR']
 107     sanitized_config['mozconfig'] = config.get('MOZCONFIG')
 108
 109     if not check_unicode(sanitized_config):
 110         print("Configuration should be all unicode.", file=sys.stderr)
 111         print("Please file a bug for the above.", file=sys.stderr)
 112         sys.exit(1)
 113
 114     # Create config.status. Eventually, we'll want to just do the work it does
 115     # here, when we're able to skip configure tests/use cached results/not rely
 116     # on autoconf.
 117     logging.getLogger('moz.configure').info('Creating config.status')
 118     with codecs.open('config.status', 'w', 'utf-8') as fh:
 119         fh.write(textwrap.dedent('''\
 120             #!%(python)s
 121             # coding=utf-8
 122             from __future__ import unicode_literals
 123         ''') % {'python': config['PYTHON3']})
 124         for k, v in sorted(six.iteritems(sanitized_config)):
 125             fh.write('%s = ' % k)
 126             write_indented_repr(fh, v)
 127         fh.write("__all__ = ['topobjdir', 'topsrcdir', 'defines', "
 128                  "'substs', 'mozconfig']")
 129
 130         if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
 131             fh.write(textwrap.dedent('''
 132                 if __name__ == '__main__':
 133                     from mozbuild.util import patch_main
 134                     patch_main()
 135                     from mozbuild.config_status import config_status
 136                     args = dict([(name, globals()[name]) for name in __all__])
 137                     config_status(**args)
 138             '''))
 139
 140     partial_config = PartialConfigEnvironment(config['TOPOBJDIR'])
 141     partial_config.write_vars(sanitized_config)
 142
 143     # Write out a file so the build backend knows to re-run configure when
 144     # relevant Python changes.
 145     with io.open('config_status_deps.in', 'w', encoding='utf-8',
 146                  newline='\n') as fh:
 147         for f in sorted(
 148                 itertools.chain(config['CONFIG_STATUS_DEPS'],
 149                                 iter_modules_in_path(config['TOPOBJDIR'],
 150                                                      config['TOPSRCDIR']))):
 151             fh.write('%s\n' % mozpath.normpath(f))
 152
 153     # Other things than us are going to run this file, so we need to give it
 154     # executable permissions.
 155     os.chmod('config.status', 0o755)
 156     if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
 157         from mozbuild.config_status import config_status
 158
 159         # Some values in sanitized_config also have more complex types, such as
 160         # EnumString, which using when calling config_status would currently
 161         # break the build, as well as making it inconsistent with re-running
 162         # config.status, for which they are normalized to plain strings via
 163         # indented_repr. Likewise for non-dict non-string iterables being
 164         # converted to lists.
 165         def normalize(obj):
 166             if isinstance(obj, dict):
 167                 return {
 168                     k: normalize(v)
 169                     for k, v in six.iteritems(obj)
 170                 }
 171             if isinstance(obj, six.text_type):
 172                 return six.text_type(obj)
 173             if isinstance(obj, Iterable):
 174                 return [normalize(o) for o in obj]
 175             return obj
 176         return config_status(args=[], **normalize(sanitized_config))
 177     return 0
 178
 179
 180 if __name__ == '__main__':
 181     sys.exit(main(sys.argv))