config/rebuild_check.py
author Nick Alexander <nalexander@mozilla.com>
Tue, 18 Dec 2018 03:29:16 +0000
changeset 451031 cc64661d5c947ca7beedd0789e4cc51180318734
parent 419599 da3c81f986fa63b42a2874b1791eddcdbfbe8424
child 481687 9c5b3c7e1ca2240f765d62466cc917ad778407ef
permissions -rw-r--r--
Bug 1498406 - Part 2: Don't check for Android platform in configure. r=froydnj There's no need -- it will be fetched by Gradle when needed. The only wrinkle is that the user might be asked to confirm license agreements, which could be a hassle (and could cause problems in CI, but there we install relevant platforms in advance). Differential Revision: https://phabricator.services.mozilla.com/D14288

# 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/.

import os
import errno


def mtime(path):
    try:
        return os.stat(path).st_mtime
    except OSError as e:
        if e.errno == errno.ENOENT:
            return -1
        raise


def rebuild_check(args):
    target = args[0]
    deps = args[1:]
    t = mtime(target)
    if t < 0:
        print(target)
        return

    newer = []
    removed = []
    for dep in deps:
        deptime = mtime(dep)
        if deptime < 0:
            removed.append(dep)
        elif mtime(dep) > t:
            newer.append(dep)

    if newer and removed:
        print('Rebuilding %s because %s changed and %s was removed' % (
            target, ', '.join(newer), ', '.join(removed)))
    elif newer:
        print('Rebuilding %s because %s changed' % (target, ', '.join(newer)))
    elif removed:
        print('Rebuilding %s because %s was removed' % (
            target, ', '.join(removed)))
    else:
        print('Rebuilding %s for an unknown reason' % target)


if __name__ == '__main__':
    import sys
    rebuild_check(sys.argv[1:])