CentOS 7下Vim安装YouCompleteMe插件

最权威的原始步骤可以参考github中关于此插件的README.md，如果时间允许的话，尽量多看几遍可以避免很多不必要的麻烦。

一.版本检测

使用vim --version指令，检 vim版本是否大于7.3.584，一般新系统都满足。打开vim，输入下述指令查看是否支持python。如果显示为1，则表示支持python；如果显示为0，则表示不支持python，需要重新下载编译vim，使其支持python。

:echo has('python')

二.下载Vundle和YouCompleteMe插件

输入以下指令，下载Vundle

git clone https://github.com/gmarik/Vundle.vim.git ~/.vim/bundle/Vundle.vim

下载成功后，在用户根目录下面，修改.vimrc文件，追加下面语句以便后续安装YouCompleteMe插件

set nocompatible  

filetype off  

set rtp+=~/.vim/bundle/Vundle.vim  

call vundle#begin()  

Plugin 'gmarik/Vundle.vim'  

Plugin 'Valloric/YouCompleteMe'  

call vundle#end()  

filetype plugin indent on  

然后在vim中先按Esc建，并且输入以下指令安装插件：

:PluginInstall 

三.编译YouCompleteMe

在编译之前下载编译工具，准备编译YouCompleteMe

sudo yum install automake gcc gcc-c++ kernel-devel cmake

sudo yum install python-devel python3-devel

编译YouCompleteMe使其支持C/C++ 自动补全

cd ~/.vim/bundle/YouCompleteMe

./install.py --clang-completer

注：在安装的时候内存要求是2G以上，如果你机子内布不足2G，请创建2G的swap虚拟内存

四.配置vim

修改.vimrc文件

let g:ycm_global_ycm_extra_conf = '/home/li/.vim/bundle/YouCompleteMe/.ycm_extra_conf.py  

let g:ycm_seed_identifiers_with_syntax=1    " 语法关键字补全  

let g:ycm_confirm_extra_conf=0  " 打开vim时不再询问是否加载ycm_extra_conf.py配置  

inoremap <expr> <CR>  pumvisible() ? "\<C-y>" : "\<CR>"    "回车即选中当前项  

set completeopt=longest,menu    "让Vim的补全菜单行为与一般IDE一致(参考VimTip1228)  

五. 附件

.ycm_extra_conf.py文件内容

import os

import ycm_core

flags = [

'-Wall',

'-Wextra',

'-Wno-long-long',

'-Wno-variadic-macros',

'-fexceptions',

'-stdlib=libc++',

'-std=c++11',

'-x',

'c++',

'-I',

'.',

'-isystem',

'/usr/include',

'-isystem',

'/usr/local/include',

'-isystem',

'/Library/Developer/CommandLineTools/usr/include',

'-isystem',

'/Library/Developer/CommandLineTools/usr/bin/../lib/c++/v1',

]

compilation_database_folder = ''

if os.path.exists( compilation_database_folder ):

  database = ycm_core.CompilationDatabase( compilation_database_folder )

else:

  database = None

SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

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 IsHeaderFile( filename ):

  extension = os.path.splitext( filename )[ 1 ]

  return extension in [ '.h', '.hxx', '.hpp', '.hh' ]

def GetCompilationInfoForFile( filename ):

  if IsHeaderFile( filename ):

    basename = os.path.splitext( filename )[ 0 ]

    for extension in SOURCE_EXTENSIONS:

      replacement_file = basename + extension

      if os.path.exists( replacement_file ):

        compilation_info = database.GetCompilationInfoForFile(

          replacement_file )

        if compilation_info.compiler_flags_:

          return compilation_info

    return None

  return database.GetCompilationInfoForFile( filename )

def FlagsForFile( filename, **kwargs ):

  if database:

    compilation_info = GetCompilationInfoForFile( filename )

    if not compilation_info:

      return None

    final_flags = MakeRelativePathsInFlagsAbsolute(

      compilation_info.compiler_flags_,

      compilation_info.compiler_working_dir_ )

  else:

    relative_to = DirectoryOfThisScript()

    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

  return {

    'flags': final_flags,

    'do_cache': True

  }

Vim好用的插件: YouCompleteMe  http://www.linuxidc.com/Linux/2015-08/122485.htm

Ubuntu 15.04下为Vim安装YouCompleteMe插件 http://www.linuxidc.com/Linux/2015-07/120352.htm

Vim自动补全插件----YouCompleteMe安装与配置  http://www.linuxidc.com/Linux/2014-04/99719.htm

本文永久更新链接地址：http://www.linuxidc.com/Linux/2016-06/131936.htm