.ycm_extra_conf.py

import os
import ycm_core
from clang_helpers import PrepareClangFlags

# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = ''

# These are the compilation flags that will be used in case there's no
# compilation database set.
flags = [
        '-Wall',
        '-std=c++11',
        '-stdlib=libc++',
        '-x',
        'c++',
        '-I',
        '.',
        '-isystem',
        '/usr/lib/c++/v1',
        '-isystem',
        '/usr/include/c++/4.8',
        '-isystem',
        '/usr/include/x86_64-linux-gnu/c++/4.8',
        '-isystem',
        '/usr/include/c++/4.8/backward',
        '-isystem',
        '/usr/lib/gcc/x86_64-linux-gnu/4.8/include',
        '-isystem',
        '/usr/local/include',
        '-isystem',
        '/usr/lib/gcc/x86_64-linux-gnu/4.8/include-fixed',
        '-isystem',
        '/usr/include/x86_64-linux-gnu',
        '-isystem',
        '/usr/include',
        '-I',
        '/opt/Qt/5.3/gcc_64/include',
        '-I',
        '/opt/Qt/5.3/gcc_64/include/QtCore',
        '-I',
        '/opt/Qt/5.3/gcc_64/include/QtQuick',
        '-I',
        '/opt/Qt/5.3/gcc_64/include/QtQml',
        '-I',
        '/opt/Qt/5.3/gcc_64/include/QtMultimedia',
        ]

if compilation_database_folder:
    database = ycm_core.CompilationDatabase(compilation_database_folder)
else:
    database = None


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


def MakeRelativePathsInFlagsAbsolute(flags, working_directory):
    if not working_directory:
        return flags
    new_flags = []
    make_next_absolute = False
    path_flags = ['-isystem', '-I', '-iquote', '--sysroot=']
    for flag in flags:
        new_flag = flag

        if make_next_absolute:
            make_next_absolute = False
            if not flag.startswith('/'):
                new_flag = os.path.join(working_directory, flag)

        for path_flag in path_flags:
            if flag == path_flag:
                make_next_absolute = True
                break

            if flag.startswith(path_flag):
                path = flag[len(path_flag):]
                new_flag = path_flag + os.path.join(working_directory, path)
                break

        if new_flag:
            new_flags.append(new_flag)
    return new_flags


def FlagsForFile(filename):
    if database:
        # Bear in mind that compilation_info.compiler_flags_ does NOT return a
        # python list, but a "list-like" StringVec object
        compilation_info = database.GetCompilationInfoForFile(filename)
        final_flags = PrepareClangFlags(
                MakeRelativePathsInFlagsAbsolute(
                    compilation_info.compiler_flags_,
                    compilation_info.compiler_working_dir_),
                filename)
    else:
        relative_to = DirectoryOfThisScript()
        final_flags = MakeRelativePathsInFlagsAbsolute(flags, relative_to)

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