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 errno
   9 import io
  10 import itertools
  11 import logging
  12 import os
  13 import sys
  14 import textwrap
  15
  16
  17 try:
  18     from collections.abc import Iterable
  19 except ImportError:
  20     from collections import Iterable
  21
  22
  23 base_dir = os.path.abspath(os.path.dirname(__file__))
  24 sys.path.insert(0, os.path.join(base_dir, "python", "mozboot"))
  25 sys.path.insert(0, os.path.join(base_dir, "python", "mozbuild"))
  26 sys.path.insert(0, os.path.join(base_dir, "third_party", "python", "six"))
  27 from mozbuild.configure import (
  28     ConfigureSandbox,
  29     TRACE,
  30 )
  31 from mozbuild.pythonutil import iter_modules_in_path
  32 from mozbuild.backend.configenvironment import PartialConfigEnvironment
  33 from mozbuild.util import write_indented_repr
  34 import mozpack.path as mozpath
  35 import six
  36
  37
  38 def main(argv):
  39     config = {}
  40
  41     if "OLD_CONFIGURE" not in os.environ:
  42         os.environ["OLD_CONFIGURE"] = os.path.join(base_dir, "old-configure")
  43
  44     sandbox = ConfigureSandbox(config, os.environ, argv)
  45
  46     clobber_file = "CLOBBER"
  47     if not os.path.exists(clobber_file):
  48         # Simply touch the file.
  49         with open(clobber_file, "a"):
  50             pass
  51
  52     if os.environ.get("MOZ_CONFIGURE_TRACE"):
  53         sandbox._logger.setLevel(TRACE)
  54
  55     sandbox.run(os.path.join(os.path.dirname(__file__), "moz.configure"))
  56
  57     if sandbox._help:
  58         return 0
  59
  60     logging.getLogger("moz.configure").info("Creating config.status")
  61
  62     old_js_configure_substs = config.pop("OLD_JS_CONFIGURE_SUBSTS", None)
  63     old_js_configure_defines = config.pop("OLD_JS_CONFIGURE_DEFINES", None)
  64     if old_js_configure_substs or old_js_configure_defines:
  65         js_config = config.copy()
  66         pwd = os.getcwd()
  67         try:
  68             try:
  69                 os.makedirs("js/src")
  70             except OSError as e:
  71                 if e.errno != errno.EEXIST:
  72                     raise
  73
  74             os.chdir("js/src")
  75             js_config["OLD_CONFIGURE_SUBSTS"] = old_js_configure_substs
  76             js_config["OLD_CONFIGURE_DEFINES"] = old_js_configure_defines
  77             # The build system frontend expects $objdir/js/src/config.status
  78             # to have $objdir/js/src as topobjdir.
  79             # We want forward slashes on all platforms.
  80             js_config["TOPOBJDIR"] += "/js/src"
  81             config_status(js_config, execute=False)
  82         finally:
  83             os.chdir(pwd)
  84
  85     return config_status(config)
  86
  87
  88 def check_unicode(obj):
  89     """Recursively check that all strings in the object are unicode strings."""
  90     if isinstance(obj, dict):
  91         result = True
  92         for k, v in six.iteritems(obj):
  93             if not check_unicode(k):
  94                 print("%s key is not unicode." % k, file=sys.stderr)
  95                 result = False
  96             elif not check_unicode(v):
  97                 print("%s value is not unicode." % k, file=sys.stderr)
  98                 result = False
  99         return result
 100     if isinstance(obj, bytes):
 101         return False
 102     if isinstance(obj, six.text_type):
 103         return True
 104     if isinstance(obj, Iterable):
 105         return all(check_unicode(o) for o in obj)
 106     return True
 107
 108
 109 def config_status(config, execute=True):
 110     # Sanitize config data to feed config.status
 111     # Ideally, all the backend and frontend code would handle the booleans, but
 112     # there are so many things involved, that it's easier to keep config.status
 113     # untouched for now.
 114     def sanitize_config(v):
 115         if v is True:
 116             return "1"
 117         if v is False:
 118             return ""
 119         # Serialize types that look like lists and tuples as lists.
 120         if not isinstance(v, (bytes, six.text_type, dict)) and isinstance(v, Iterable):
 121             return list(v)
 122         return v
 123
 124     sanitized_config = {}
 125     sanitized_config["substs"] = {
 126         k: sanitize_config(v)
 127         for k, v in six.iteritems(config)
 128         if k
 129         not in (
 130             "DEFINES",
 131             "TOPSRCDIR",
 132             "TOPOBJDIR",
 133             "CONFIG_STATUS_DEPS",
 134             "OLD_CONFIGURE_SUBSTS",
 135             "OLD_CONFIGURE_DEFINES",
 136         )
 137     }
 138     for k, v in config["OLD_CONFIGURE_SUBSTS"]:
 139         sanitized_config["substs"][k] = sanitize_config(v)
 140     sanitized_config["defines"] = {
 141         k: sanitize_config(v) for k, v in six.iteritems(config["DEFINES"])
 142     }
 143     for k, v in config["OLD_CONFIGURE_DEFINES"]:
 144         sanitized_config["defines"][k] = sanitize_config(v)
 145     sanitized_config["topsrcdir"] = config["TOPSRCDIR"]
 146     sanitized_config["topobjdir"] = config["TOPOBJDIR"]
 147     sanitized_config["mozconfig"] = config.get("MOZCONFIG")
 148
 149     if not check_unicode(sanitized_config):
 150         print("Configuration should be all unicode.", file=sys.stderr)
 151         print("Please file a bug for the above.", file=sys.stderr)
 152         sys.exit(1)
 153
 154     # Some values in sanitized_config also have more complex types, such as
 155     # EnumString, which using when calling config_status would currently
 156     # break the build, as well as making it inconsistent with re-running
 157     # config.status, for which they are normalized to plain strings via
 158     # indented_repr. Likewise for non-dict non-string iterables being
 159     # converted to lists.
 160     def normalize(obj):
 161         if isinstance(obj, dict):
 162             return {k: normalize(v) for k, v in six.iteritems(obj)}
 163         if isinstance(obj, six.text_type):
 164             return six.text_type(obj)
 165         if isinstance(obj, Iterable):
 166             return [normalize(o) for o in obj]
 167         return obj
 168
 169     sanitized_config = normalize(sanitized_config)
 170
 171     # Create config.status. Eventually, we'll want to just do the work it does
 172     # here, when we're able to skip configure tests/use cached results/not rely
 173     # on autoconf.
 174     with codecs.open("config.status", "w", "utf-8") as fh:
 175         fh.write(
 176             textwrap.dedent(
 177                 """\
 178             #!%(python)s
 179             # coding=utf-8
 180             from __future__ import unicode_literals
 181         """
 182             )
 183             % {"python": config["PYTHON3"]}
 184         )
 185         for k, v in sorted(six.iteritems(sanitized_config)):
 186             fh.write("%s = " % k)
 187             write_indented_repr(fh, v)
 188         fh.write(
 189             "__all__ = ['topobjdir', 'topsrcdir', 'defines', " "'substs', 'mozconfig']"
 190         )
 191
 192         if execute:
 193             fh.write(
 194                 textwrap.dedent(
 195                     """
 196                 if __name__ == '__main__':
 197                     from mozbuild.config_status import config_status
 198                     args = dict([(name, globals()[name]) for name in __all__])
 199                     config_status(**args)
 200             """
 201                 )
 202             )
 203
 204     partial_config = PartialConfigEnvironment(config["TOPOBJDIR"])
 205     partial_config.write_vars(sanitized_config)
 206
 207     # Write out a file so the build backend knows to re-run configure when
 208     # relevant Python changes.
 209     with io.open("config_status_deps.in", "w", encoding="utf-8", newline="\n") as fh:
 210         for f in sorted(
 211             itertools.chain(
 212                 config["CONFIG_STATUS_DEPS"],
 213                 iter_modules_in_path(config["TOPOBJDIR"], config["TOPSRCDIR"]),
 214             )
 215         ):
 216             fh.write("%s\n" % mozpath.normpath(f))
 217
 218     # Other things than us are going to run this file, so we need to give it
 219     # executable permissions.
 220     os.chmod("config.status", 0o755)
 221     if execute:
 222         from mozbuild.config_status import config_status
 223
 224         return config_status(args=[], **sanitized_config)
 225     return 0
 226
 227
 228 if __name__ == "__main__":
 229     sys.exit(main(sys.argv))