CentOS7.6 vim8自动补全插件YouCompleteMe：go语言为例，

网上关于VIM编辑器补齐插件YouCompleteMe安装文档都是不完整的；YouCompleteMe也是VIM安装过程最复杂的插件。
安装过程请仔细阅读官方文档，不要相信网文。

最小化安装操作系统CentOS7.6

1.配置YUM源：

cat /etc/yum.repos.d/CentOS-Base.repo
[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/7.6.1810/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/7.6.1810/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7


#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos-vault/7.6.1810/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7


#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

ISO源

cat CentOS-Media.repo
[c7-media]
name=CentOS-$releasever - Media
baseurl=ftp://192.168.150.222/iso/centos76
gpgcheck=0
enabled=1

2.安装python3.6.15

#要求python>=3.6

yum install -y bzip2-devel ncurses-devel gdbm-devel openssl-devel readline-devel zlib-devel sqlite-devel tk-devel xz-devel gcc readline.i686  libffi-devel gcc-c++
cd Python-3.6.15
./configure --prefix=/usr/local/python36  --enable-optimizations --enable-shared
make
make install

修改YUM依赖python2的配置：

vi /usr/bin/yum
第一行：
#!/usr/bin/python ====》#!/usr/bin/python2

vi /usr/libexec/urlgrabber-ext-down
#!/usr/bin/python ====》#!/usr/bin/python2


rm -f /usr/bin/python
ln -s /usr/local/python36/bin/python3 /usr/bin/python


echo "/usr/local/python36/lib">>/etc/ld.so.conf.d/python3.conf
ldconfig

3.安装devtoolset-8以上的g++支持包：

yum install centos-release-scl
yum install devtoolset-10
scl enable devtoolset-10 bash   # 只在当前窗口有效

4.安装VIM8

如果已有VIM命令，需要进行卸载：

yum remove -y vim-minimal
cp -r /usr/local/python36/lib/python3.6 /usr/lib64
tar -xvf vim-8.2.4412.tar.gz
cd ~/vim-8.2.4412

./configure  --with-features=huge \
--enable-multibyte \
--enable-pythoninterp=yes \
--with-python-config-dir=/usr/lib64/python2.7/config \
--with-python3-command=python2 \
--enable-python3interp=yes \
--with-python3-config-dir=/usr/lib64/python3.6/config-3.6m-x86_64-linux-gnu \
--prefix=/usr/local/vim8 \
--with-python3-command=python3 \
--enable-cscope \
--enable-fontset
make  && make install

配置VIM环境变量：

PATH=$PATH:$HOME/bin    ====>  PATH=$PATH:$HOME/bin:/usr/local/vim8/bin

#添加别名：
alias vi='/usr/local/vim8/bin/vim'

source ~/.bash_profile

5.安装 git

yum -y install git

6.安装vim插件管理器

官网：
https://github.com/VundleVim/Vundle.vim

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

vim ~/.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

安装完成后。输入：

vim
:PluginInstall
回车自动安装插件

7.安装cmake-3.22.2.tar.gz

官方下载地址：
https://cmake.org/download/

cd ~
tar -xvf cmake-3.22.2.tar.gz
cd cmake-3.22.2
./bootstrap --system-curl
gmake -j4
gmake install

8.安装自动补齐插件YouCompleteMe

YouCompleteMe官网：
https://github.com/ycm-core/YouCompleteMe

git clone https://github.com/ycm-core/YouCompleteMe.git
git submodule update --init --recursive

9.安装go

下载

https://golang.google.cn/dl/

解压：

cd ~
tar -xvf go1.17.3.linux-amd64.tar.gz
mv go /usr/local

配置环境变量：

vi ~/.bash_profile
PATH=$PATH:$HOME/bin:/usr/local/vim8/bin    ====>PATH=$PATH:$HOME/bin:/usr/local/vim8/bin:/usr/local/go/bin

添加GO环境变量

export GOROOT=/usr/local/go
export GOPATH=/root/go
export GOBIN=/root/go

设置go环境变量，模块包下载地下改为国内源：

Go 1.13 及以上（推荐）

go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.cn,direct

安装go的gopls

go install golang.org/x/tools/gopls@latest

10.这里仅安装YouCompleteMe中关于go语言的补齐插件

文件.vimrc添加：

Plugin 'fatih/vim-go'
:PluginInstall
:q

cd ~/.vim/bundle/YouCompleteMe
python3 install.py  --go-completer