configure.py
author Gregory Szorc <gps@mozilla.com>
Fri, 27 Oct 2017 14:49:25 -0700
changeset 439807 b676880e0d97b3f00c486c41c09f0da7ad692425
parent 436572 6074db12d685655fe5692d59471b3c32cc967dc9
child 440485 027f1c5da98e7212c1b229e603399fde263df92a
permissions -rw-r--r--
Bug 1412431 - Remove MOZ_UNIFY_BDATE; r=nalexander There are no references to this variable outside client.mk. AFAICT it is unused. The only reasonable justification for retaining this support IMO was Universal MacOS builds. And those are no longer supported. MozReview-Commit-ID: 9MnC18Bd1ge

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import print_function, unicode_literals

import codecs
import itertools
import os
import sys
import textwrap


base_dir = os.path.abspath(os.path.dirname(__file__))
sys.path.insert(0, os.path.join(base_dir, 'python', 'mozbuild'))
from mozbuild.configure import ConfigureSandbox
from mozbuild.makeutil import Makefile
from mozbuild.pythonutil import iter_modules_in_path
from mozbuild.backend.configenvironment import PartialConfigEnvironment
from mozbuild.util import (
    indented_repr,
    encode,
)


def main(argv):
    config = {}
    sandbox = ConfigureSandbox(config, os.environ, argv)
    sandbox.run(os.path.join(os.path.dirname(__file__), 'moz.configure'))

    if sandbox._help:
        return 0

    return config_status(config)


def config_status(config):
    # Sanitize config data to feed config.status
    # Ideally, all the backend and frontend code would handle the booleans, but
    # there are so many things involved, that it's easier to keep config.status
    # untouched for now.
    def sanitized_bools(v):
        if v is True:
            return '1'
        if v is False:
            return ''
        return v

    sanitized_config = {}
    sanitized_config['substs'] = {
        k: sanitized_bools(v) for k, v in config.iteritems()
        if k not in ('DEFINES', 'non_global_defines', 'TOPSRCDIR', 'TOPOBJDIR',
                     'ALL_CONFIGURE_PATHS')
    }
    sanitized_config['defines'] = {
        k: sanitized_bools(v) for k, v in config['DEFINES'].iteritems()
    }
    sanitized_config['non_global_defines'] = config['non_global_defines']
    sanitized_config['topsrcdir'] = config['TOPSRCDIR']
    sanitized_config['topobjdir'] = config['TOPOBJDIR']
    sanitized_config['mozconfig'] = config.get('MOZCONFIG')

    # Create config.status. Eventually, we'll want to just do the work it does
    # here, when we're able to skip configure tests/use cached results/not rely
    # on autoconf.
    print("Creating config.status", file=sys.stderr)
    encoding = 'mbcs' if sys.platform == 'win32' else 'utf-8'
    with codecs.open('config.status', 'w', encoding) as fh:
        fh.write(textwrap.dedent('''\
            #!%(python)s
            # coding=%(encoding)s
            from __future__ import unicode_literals
            from mozbuild.util import encode
            encoding = '%(encoding)s'
        ''') % {'python': config['PYTHON'], 'encoding': encoding})
        # A lot of the build backend code is currently expecting byte
        # strings and breaks in subtle ways with unicode strings. (bug 1296508)
        for k, v in sanitized_config.iteritems():
            fh.write('%s = encode(%s, encoding)\n' % (k, indented_repr(v)))
        fh.write("__all__ = ['topobjdir', 'topsrcdir', 'defines', "
                 "'non_global_defines', 'substs', 'mozconfig']")

        if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
            fh.write(textwrap.dedent('''
                if __name__ == '__main__':
                    from mozbuild.util import patch_main
                    patch_main()
                    from mozbuild.config_status import config_status
                    args = dict([(name, globals()[name]) for name in __all__])
                    config_status(**args)
            '''))

    partial_config = PartialConfigEnvironment(config['TOPOBJDIR'])
    partial_config.write_vars(sanitized_config)

    # Write out a depfile so Make knows to re-run configure when relevant Python
    # changes.
    mk = Makefile()
    rule = mk.create_rule()
    rule.add_targets(["$(OBJDIR)/config.status"])
    rule.add_dependencies(itertools.chain(config['ALL_CONFIGURE_PATHS'],
                                          iter_modules_in_path(config['TOPOBJDIR'],
                                                               config['TOPSRCDIR'])))
    with open('configure.d', 'w') as fh:
        mk.dump(fh)

    # Other things than us are going to run this file, so we need to give it
    # executable permissions.
    os.chmod('config.status', 0o755)
    if config.get('MOZ_BUILD_APP') != 'js' or config.get('JS_STANDALONE'):
        os.environ[b'WRITE_MOZINFO'] = b'1'
        from mozbuild.config_status import config_status

        # Some values in sanitized_config also have more complex types, such as
        # EnumString, which using when calling config_status would currently
        # break the build, as well as making it inconsistent with re-running
        # config.status. Fortunately, EnumString derives from unicode, so it's
        # covered by converting unicode strings.

        # A lot of the build backend code is currently expecting byte strings
        # and breaks in subtle ways with unicode strings.
        return config_status(args=[], **encode(sanitized_config, encoding))
    return 0


if __name__ == '__main__':
    sys.exit(main(sys.argv))