centos安装youcompleteme

哈哈，我又回来了，简单的重新装了一边虚拟机，又把vim配置了一遍，这回有信心把youcomplete的安装方法贴出来了，先给个权威的链接，然后给出具体步骤，保证没问题可以安装成功

http://www.centoscn.com/image-text/install/2016/0424/7115.html

什么是youcompleteme？就是一个强大的自动补全插件，安装此插件之后配置一下vim，这样在敲代码的时候就不会有忘记函数名的尴尬了~

我们需要以下几步

•  先检查一下自己的虚拟机中是否有安装python，用vim试一下1 :echo has('python') 如果得到结果为1 就说明有（其实有没有都无所谓，再执行一遍安装命令绝对没错）

 

yum install python

 

 

 

• 安装vundle，vundle是一款vim插件管理工具，使用它安装youcomplete很简单

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

 

备用：git clone https://github.com/gmarik/vundle.git

 

 

 

• 配置vundle

在vimrc中添加这样的配置语句

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  

 

• 安装youcompleteme

去github上clone一下youcompleteme的代码

git clone https://github.com/Valloric/YouCompleteMe.git ~/.vim/bundle/YouCompleteMe

然后在vim里面安装一下，执行

:PluginInstall 

看到有DONE!显示就好了

• 编译youcomplete

这一步坑了我好久，网上好多抄袭的全是apt命令和dnf命令，不太适合我的centos7，用yum就好了！

yum install automake gcc gcc-c++ kernel-devel cmakeyum install python-devel python3-devel

不管安没安装python在这两句命令执行之后你都有了

接下来就是编译的重头戏

cd ~/.vim/bundle/YouCompleteMe./install.py --clang-completer

执行以上两句命令，然后等待就好了~编译就好了

• 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    " 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)  

注意第一句，/home/li/这部分不一定通用，根据自己当前登陆的账户来定，我的使用root登陆的，所以这部分就是/root/

• （可能会有）附件

有可能.ycm_extra_conf.py这个文件会自动就有，也许会没有，find一下，没找到的话就自己vim修改一下，以下是该文件内容，复制之前，友情提示，在vim输入

：set paste

进入复制模式，这样子复制之后格式就不会乱了~

import osimport ycm_coreflags = ['-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 = NoneSOURCE_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_flagsdef 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  }