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centos安裝youcompleteme

哈哈,我又回來了,簡單的重新裝了一邊虛擬機,又把vim配置了一遍,這回有信心把youcomplete的安裝方法貼出來了,先給個權威的鏈接,然後給出具體步驟,保證沒問題可以安裝成功
http://www.centoscn.com/image-text/install/2016/0424/7115.html
什麼是youcompleteme?就是一個強大的自動補全插件,安裝此插件之後配置一下vim,這樣在敲代碼的時候就不會有忘記函數名的尴尬了~
我們需要以下幾步
先檢查一下自己的虛擬機中是否有安裝python,用vim試一下 :echo has('python') 如果得到結果為1 就說明有(其實有沒有都無所謂,再執行一遍安裝命令絕對沒錯)
yum install python

安裝vundle,vundle是一款vim插件管理工具,使用它安裝youcomplete很簡單
git clonehttps://github.com/gmarik/Vundle.vim.git~/.vim/bundle/Vundle.vim
備用:git clone' target='_blank'>https://github.com/gmarik/vundle.git[/code] 
配置vundle
在vimrc中添加這樣的配置語句
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

安裝youcompleteme
去github上clone一下youcompleteme的代碼
git clonehttps://github.com/Valloric/YouCompleteMe.git ~/.vim/bundle/YouCompleteMe

然後在vim裡面安裝一下,執行
:PluginInstall

看到有DONE!顯示就好了
編譯youcomplete
這一步坑了我好久,網上好多抄襲的全是apt命令和dnf命令,不太適合我的centos7,用yum就好了!
yum install automake gcc gcc-c++ kernel-devel cmake
yum install python-devel python3-devel

不管安沒安裝python在這兩句命令執行之後你都有了
接下來就是編譯的重頭戲
cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer

執行以上兩句命令,然後等待就好了~編譯就好了
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    " 語法關鍵字補全  
let g:ycm_confirm_extra_conf=0   " 打開vim時不再詢問是否加載ycm_extra_conf.py配置  
inoremap <expr> <CR>  pumvisible() ? "\<C-y>" : "\<CR>"    "回車即選中當前項  
set completeopt=longest,menu    "讓Vim的補全菜單行為與一般IDE一致(參考VimTip1228)

注意第一句,/home/li/這部分不一定通用,根據自己當前登陸的賬戶來定,我的使用root登陸的,所以這部分就是/root/
(可能會有)附件
有可能.ycm_extra_conf.py這個文件會自動就有,也許會沒有,find一下,沒找到的話就自己vim修改一下,以下是該文件內容,復制之前,友情提示,在vim輸入
:set paste

進入復制模式,這樣子復制之後格式就不會亂了~
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
  }
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