詳細安裝步驟在github上有，https://github.com/Valloric/YouCompleteMe，我這裏是自己總結的簡化版安裝步驟。

步驟1.安裝Vundle

首先，clone到本地

• git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
• 把以下內容復制到.vimrc:

•   set nocompatible              " be iMproved, required
    filetype off                  " required
  
    " set the runtime path to include Vundle and initialize
   
  
    set rtp+=~/.vim/bundle/Vundle.vim
    call vundle#begin()
    " alternatively, pass a path where Vundle should install plugins
    "call vundle#begin(‘~/some/path/here‘)
  
    " let Vundle manage Vundle, required
    Plugin ‘VundleVim/Vundle.vim‘
  
    " The following are examples of different formats supported.
    " Keep Plugin commands between vundle#begin/end.
   
  
    " plugin on GitHub repo
    Plugin ‘tpope/vim-fugitive‘
    " plugin from http://vim-scripts.org/vim/scripts.html
    " Plugin ‘L9‘
    " Git plugin not hosted on GitHub
    Plugin ‘git://git.wincent.com/command-t.git‘
    " git repos on your local machine (i.e. when working on your own plugin)
    "Plugin ‘file:///home/gmarik/path/to/plugin‘
   
  
    " The sparkup vim script is in a subdirectory of this repo called vim.
    " Pass the path to set the runtimepath properly.
    Plugin ‘rstacruz/sparkup‘, {‘rtp‘: ‘vim/‘}
    " Install L9 and avoid a Naming conflict if you‘ve already installed a
    " different version somewhere else.
    " Plugin ‘ascenator/L9‘, {‘name‘: ‘newL9‘}
  
    " All of your Plugins must be added before the following line
    call vundle#end()            " required
    filetype plugin indent on    " required
    " To ignore plugin indent changes, instead use:
    "filetype plugin on
    "
    " Brief help
    " :PluginList       - lists configured plugins
    " :PluginInstall    - installs plugins; append `!` to update or just :PluginUpdate
    " :PluginSearch foo - searches for foo; append `!` to refresh local cache
    " :PluginClean      - confirms removal of unused plugins; append `!` to auto-approve removal
    "
    " see :h vundle for more details or wiki for FAQ
    " Put your non-Plugin stuff after this line

• Install Plugins: 打開vim執行:PluginInstall 或者直接輸入命令sudo vim +PluginInstall +qall

步驟2.安裝工具和cmake

• sudo apt-get install build-essential cmake

步驟3.安裝python-dev,python3-dev

• sudo apt-get install python-dev python3-dev

步驟4.安裝clang

• sudo apt-get install clang

步驟5.編譯

• cd ~/.vim/bundle/YouCompleteMe
• ./install.py --clang-completer
• 如果編譯出錯執行：git submodule update --init --recursive

步驟6.復制以下內容到.vimrc中

  "----------------------------"
  "------ YouCompleteMe -------"
  "----------------------------"
  let g:ycm_global_ycm_extra_conf = ‘~/.vim/bundle/YouCompleteMe/cpp/ycm/.ycm_extra_conf.py‘
    
    
  " YouCompleteMe
  set runtimepath+=~/.vim/bundle/YouCompleteMe
  let g:ycm_collect_identifiers_from_tags_files = 1           " 開啟 YCM 基於標簽引擎
  let g:ycm_collect_identifiers_from_comments_and_strings = 1 " 註釋與字符串中的內容也用於補全
  let g:syntastic_ignore_files=[".*\.py$"]
  let g:ycm_seed_identifiers_with_syntax = 1                  " 語法關鍵字補全
  let g:ycm_complete_in_comments = 1
  let g:ycm_confirm_extra_conf = 0
  let g:ycm_key_list_select_completion = [‘<c-n>‘, ‘<Down>‘]  " 映射按鍵, 沒有這個會攔截掉tab, 導致其他插件的tab不能用.
  let g:ycm_key_list_previous_completion = [‘<c-p>‘, ‘<Up>‘]
  let g:ycm_complete_in_comments = 1                          " 在註釋輸入中也能補全
  let g:ycm_complete_in_strings = 1                           " 在字符串輸入中也能補全
  let g:ycm_collect_identifiers_from_comments_and_strings = 1 " 註釋和字符串中的文字也會被收入補全
  let g:ycm_global_ycm_extra_conf=‘~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/ycm/.ycm_extra_conf.py‘
  let g:ycm_show_diagnostics_ui = 0                           " 禁用語法檢查
  inoremap <expr> <CR> pumvisible() ? "\<C-y>" : "\<CR>" |            " 回車即選中當前項
  nnoremap <c-j> :YcmCompleter GoToDefinitionElseDeclaration<CR>|     " 跳轉到定義處
  "let g:ycm_min_num_of_chars_for_completion=2                 " 從第2個鍵入字符就開始羅列匹配項

步驟7.出現的錯誤

我安裝完以後，出現了以下錯誤：

YouCompleteMe unavailable: requires Vim compiled with Python (2.6+ or 3.3+)

解決辦法：編譯安裝vim8.0,添加python支持

網址:在deepin上安裝YouCompleteMe

在deepin上安裝YouCompleteMe