.ycm_extra_conf.py
author Geoff Brown <gbrown@mozilla.com>
Fri, 12 May 2017 15:18:38 -0600
changeset 406366 f0f6bd0a45434bcd6159ae9f7c4f558367332fe7
parent 350123 578ebd592745ff2b7647b205576f20b5b36f3327
child 512260 2a22490b8a06c9a5eef192ef3192386f8e7ff74f
permissions -rw-r--r--
Bug 1361732 - Mozharness support for a second virtualenv using python3; r=aki Currently Mozharness creates a Python 2.7 virtualenvironment with all the packages needed for Mozharness to run plus any applications that need to execute within it. For Talos, we now need a second Python virtual environment for mitmproxy, however, this package is for Python 3 and not for Python 2 (perhaps it could have worked). In any case, having the ability to support create Python 3 virtual environments will be handy. Specially since the approach of creating virtual environments is not by using 'virtualenv /path/to/venv' but by calling the venv module like 'python3 -m venv /path/to/venv'. The initial implementation only supports a list of modules. The following iteration will support requirement files and other parameters needed for pip and internal pypi hosts. Originally authored by armenzg.

# 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 imp
import os
import shlex
import sys
try:
    from StringIO import StringIO
except ImportError:
    from io import StringIO

old_bytecode = sys.dont_write_bytecode
sys.dont_write_bytecode = True

path = os.path.join(os.path.dirname(__file__), 'mach')

if not os.path.exists(path):
    path = os.path.join(os.path.dirname(__file__), 'config.status')
    config = imp.load_module('_buildconfig', open(path), path, ('', 'r', imp.PY_SOURCE))
    path = os.path.join(config.topsrcdir, 'mach')
mach_module = imp.load_module('_mach', open(path), path, ('', 'r', imp.PY_SOURCE))

sys.dont_write_bytecode = old_bytecode

def FlagsForFile(filename):
    mach = mach_module.get_mach()
    out = StringIO()

    # Mach calls sys.stdout.fileno(), so we need to fake it when capturing it.
    # Returning an invalid file descriptor does the trick.
    out.fileno = lambda: -1
    out.encoding = None
    mach.run(['compileflags', filename], stdout=out, stderr=out)

    flag_list = shlex.split(out.getvalue())

    # This flag is added by Fennec for android build and causes ycmd to fail to parse the file.
    # Removing this flag is a workaround until ycmd starts to handle this flag properly.
    # https://github.com/Valloric/YouCompleteMe/issues/1490
    final_flags = [x for x in flag_list if not x.startswith('-march=armv')]

    return {
        'flags': final_flags,
        'do_cache': True
    }