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
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
}