.ycm_extra_conf.py that just wraps a .clang_complete file for usage with YouCompleteMe and adds some extra flags

.ycm_extra_conf.py

import os
import ycm_core

flags = [
    '-Wall',
    '-Wextra',
    '-Werror',
    '-Wno-long-long',
    '-Wno-variadic-macros',
    '-fexceptions',
    '-ferror-limit=10000',
    '-DNDEBUG',
    '-std=c++11',
    '-xc++',
    ]

def DirectoryOfThisScript():
  return os.path.dirname( os.path.abspath( __file__ ) )

def IncludeClangCompleteFlags():
    return open(os.path.join(DirectoryOfThisScript(), '.clang_complete'), 'r').read().replace('"', '').splitlines()

# This is the entry point; this function is called by ycmd to produce flags for
# a file.
def FlagsForFile( filename, **kwargs ):
    clang_complete_flags = IncludeClangCompleteFlags()
    return {
      'flags': flags + clang_complete_flags,
      'include_paths_relative_to_dir': DirectoryOfThisScript()
    }