1. vim 安装youcompleteme

简介：全手动安装，
简单方式在ubuntu gnome上无效在deepin 15.04上可以。
确保你的Vim 7.4.1578以上 且支持 Python 2 or Python 3 .使用vim --version检查是否支持。

2. 简单方式：

sudo apt-get install vim
sudo apt-get install vim-addon-manager 
vam install youcompleteme
sudo vam install youcompleteme

3. 全手动方式

3.1. 0x01. 编译安装vim

• 安装编译vim用的基本软件

sudo apt-get install libncurses5-dev libgnome2-dev libgnomeui-dev \
libgtk2.0-dev libatk1.0-dev libbonoboui2-dev \
libcairo2-dev libx11-dev libxpm-dev libxt-dev python-dev \
python3-dev ruby-dev lua5.1 liblua5.1-dev libperl-dev git

• 卸载现有的vim

sudo apt-get remove vim vim-runtime gvim
sudo apt-get autoremove
sudo apt-get install -f

• 编译安装vim

Note: If you are using Python, your config directory might have a machine-specific name (e.g. config-3.5m-x86_64-linux-gnu). Check in /usr/lib/python[2/3/3.5] to find yours, and change the python-config-dir and/or python3-config-dir arguments accordingly.
Note for Ubuntu 14.04 (Trusty) users: You can only use Python 2 or Python 3. If you try to compile vim with both python-config-dir and python3-config-dir, it will give you an error YouCompleteMe unavailable: requires Vim compiled with Python (2.6+ or 3.3+) support.
Add/remove the flags below to fit your setup. For example, you can leave out enable-luainterp if you don't plan on writing any Lua.
Also, if you're not using vim 8.0, make sure to set the VIMRUNTIMEDIR variable correctly below (for instance, with vim 8.0a, use /usr/share/vim/vim80a). Keep in mind that some vim installations are located directly inside /usr/share/vim; adjust to fit your system:

cd ~
git clone https://github.com/vim/vim.git
cd vim
./configure --with-features=huge \
            --enable-multibyte \
            --enable-rubyinterp=yes \
            --enable-pythoninterp=yes \
            --with-python-config-dir=/usr/lib/python2.7/config \
            --enable-python3interp=yes \
            --with-python3-config-dir=/usr/lib/python3.5/config \
            --enable-perlinterp=yes \
            --enable-luainterp=yes \
            --enable-gui=gtk2 \
            --enable-cscope \
            --prefix=/usr/local
make VIMRUNTIMEDIR=/usr/local/share/vim/vim80

使用 checkinstall可以简单的卸载vim.

    sudo apt-get install checkinstall
    cd ~/vim
    sudo checkinstall

用makeinstall安装

    cd ~/vim
    sudo make install

用 update-alternatives设置vim为默认的编辑器.

    sudo update-alternatives --install /usr/bin/editor editor /usr/bin/vim 1
    sudo update-alternatives --set editor /usr/bin/vim
    sudo update-alternatives --install /usr/bin/vi vi /usr/bin/vim 1
    sudo update-alternatives --set vi /usr/bin/vim

进入vim以后 输入：version 查看是否有支持python2与python3

3.2. 0x02.安装Vundle（vim的插件管理器，YouCompleteMe 简称YCM是其中一个插件）

前提是必须保证之前的vim已经安装完成了
使用git clone来复刻过来到本地

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

拷贝下面的内容到～下的.vimrc 这个隐藏文件中

set nocompatible              " be iMproved, required
filetype off                  " required
set backspace=indent,eol,start

" 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'

" install youcompleteme
Plugin 'Valloric/YouCompleteMe'

" 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

造好这个配置文件以后就可以使用vundle来安装了
打开vim 然后输入:PluginInstall 或者也可以使用命令行来安装vim +PluginInstall +qall

• 安装基本的编译安装用的以来软件

sudo apt-get install build-essential cmake python-dev python3-dev 

• 编译一下让ycm支持对应的语言
  支持c语言

cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer
Compiling YCM without semantic support for C-family languages:

去除c的支持

cd ~/.vim/bundle/YouCompleteMe
./install.py

除了c语言外，还支持 c#、go、typescript、javascript、rust等 最间单的方式支持所有的语言使用 ./install.py --all 以上具体的单一遇见的支持可以参见一下引用的资料

C# support: install Mono and add --omnisharp-completer when calling ./install.py.
Go support: install Go and add --gocode-completer when calling ./install.py.
TypeScript support: install Node.js and npm then install the TypeScript SDK with npm install -g typescript.
JavaScript support: install Node.js and npm and add --tern-completer when calling ./install.py.
Rust support: install Rust and add --racer-completer when calling ./install.py.

3.3. 以上操作以后即可使用ycm了