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最近我开始在 linux(ubuntu) 中研究 c++，我发现了一个很好的 vim 插件，叫做“YouCompleteMe”。

我使用 --clang-completer 成功安装了它，它确实可以工作，但不完全。它可以识别系统 c++ 库但它无法识别我项目目录中的其他头文件，它仅适用于当前打开的文件。我认为问题出在我的“.ycm_extra_conf.py”中，但我不知道如何正确更改它。

有人可以帮忙吗？

这是我在stackoverflow上的第一篇文章，所以如果有什么问题或者您需要更多信息，请留下您的信息。谢谢

目前，我的vim是这样的： 在此处输入图像描述

这是我的配置文件：

# Partially stolen from https://bitbucket.org/mblum/libgp/src/2537ea7329ef/.ycm_extra_conf.py
import os
import ycm_core
# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
        '-Wall',
        '-Wextra',
        '-Werror',
        '-Wno-long-long',
        '-Wno-variadic-macros',
        '-fexceptions',
        # THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
        # language to use when compiling headers. So it will guess. Badly. So C++
        # headers will be compiled as C headers. You don't want that so ALWAYS specify
        # a "-std=<something>".
        # For a C project, you would set this to something like 'c99' instead of
        # 'c++11'.
        '-std=c++11',
        # ...and the same thing goes for the magic -x option which specifies the
        # language that the files to be compiled are written in. This is mostly
        # relevant for c++ headers.
        # For a C project, you would set this to 'c' instead of 'c++'.
        '-x', 'c++',
        # This path will only work on OS X, but extra paths that don't exist are not
        # harmful
        '-isystem', '/System/Library/Frameworks/Python.framework/Headers',
        '-isystem', '/usr/local/include',
        '-isystem', '/usr/bin/../lib/clang/3.4/include',
        '-isystem', '/usr/bin/../lib/gcc/i686-linux-gnu/4.8/include',
        '-isystem', '/usr/include/i386-linux-gnu',
        '-isystem', '/usr/include',
        '-I', 'include',
        '-I', 'src',
        '-I', '.',
        ]
# 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 = ''

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 list( 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 = MakeRelativePathsInFlagsAbsolute(
        compilation_info.compiler_flags_,
        compilation_info.compiler_working_dir_ )
    else:
        # relative_to = DirectoryOfThisScript()
        relative_to = os.path.dirname(os.path.abspath(filename))
        final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
    return {
        'flags': final_flags,
        'do_cache': True
    }
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