安装 youcompleteme 插件

安装时间可以拿来睡个午觉

 

sudo apt-get install build-essential cmake

sudo apt-get install python-dev

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

cd YouCompleteMe/

//  获取 YCM 的依赖包
git submodule update --init --recursive

cd ~/.vim/bundle/YouCompleteMe

./install.py --clang-completer

//  ./install.py --gocode-completer  // 对 golang的支持

 

其中的--clang-completer表示开启对C系列语言的支持。 
此外它还支持Go、JavaScript等,编译选项分别为:--gocode-completer、--tern-completer。 
或者使用--all开启全部的选项。

.vimrc 中增加如下配置

" 菜单配色
highlight Pmenu ctermfg=2 ctermbg=3 guifg=#005f87 guibg=#EEE8D5
" 选中项配色
highlight PmenuSel ctermfg=2 ctermbg=3 guifg=#AFD700 guibg=#106900

"设置跳转的快捷键,可以跳转到definition和declaration  
" nnoremap <leader>gc :YcmCompleter GoToDeclaration<CR>  
" nnoremap <leader>gf :YcmCompleter GoToDefinition<CR>  

nnoremap <leader>gg :vertical split<bar>YcmCompleter GoToDefinitionElseDeclaration<CR>  

nnoremap <leader>ss :split<bar>YcmCompleter GoToDefinitionElseDeclaration<CR> 

nnoremap <leader>jd :YcmCompleter GoToDefinitionElseDeclaration<CR> 

nnoremap <leader>gp :YcmCompleter GoToImprecise<CR>

nnoremap <leader>gl :YcmCompleter GoToInclude<CR>

nnoremap <leader>gt :YcmCompleter GetType<CR>

nnoremap <leader>lo :lopen<CR>

"nmap <F4> :YcmDiags<CR>  

 

// 设置文件类型白名单

 let g:ycm_filetype_whitelist = {

             \ "c":1,
             \ "cpp":1,
             \ "go":1,
             \ "h":1,
             \ "cc":1,
             \ "sh":1,
             \ "zsh":1,

             \}   

 

 " 加上下面这句, ycm 才能打开不带后缀名的 C++ 标准库文件

autocmd BufEnter * if &filetype == "" | setlocal ft=cpp | endif


" 补全功能在注释中同样有效
let g:ycm_complete_in_comments=1
" 允许 vim 加载 .ycm_extra_conf.py 文件,不再提示
let g:ycm_confirm_extra_conf=0
let g:ycm_global_ycm_extra_conf='~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/ycm/.ycm_extra_conf.py'
" 开启 YCM 标签补全引擎
"let g:ycm_collect_identifiers_from_tags_files=1
" 引入 C++ 标准库tags
" set tags+=/data/misc/software/misc./vim/stdcpp.tags
" YCM 集成 OmniCppComplete 补全引擎,设置其快捷键
inoremap <leader>; <C-x><C-o>
" 补全内容不以分割子窗口形式出现,只显示补全列表

 

"set completeopt-=preview

 

set completeopt=longest,menu "让Vim的补全菜单行为与一般IDE一致(参考VimTip1228)
autocmd InsertLeave * if pumvisible() == 0|pclose|endif"离开插入模式后自动关闭预览窗口

" 从第2个键入字符就开始罗列匹配项
let g:ycm_min_num_of_chars_for_completion=2
" 禁止缓存匹配项,每次都重新生成匹配项
let g:ycm_cache_omnifunc=0
" 语法关键字补全         
let g:ycm_seed_identifiers_with_syntax=1
"不查询ultisnips提供的代码模板补全,如果需要,设置成1即可  
let g:ycm_use_ultisnips_completer=0

"在写golang代码时, VIM 中其他地方映射了回车键;所以下面这条配置只针对 C/C++

au FileType c, cpp inoremap <expr> <CR> pumvisible() ? "\<C-y>" : "\<CR>" "回车即选中当前项

let g:ycm_show_diagnostics_ui = 0 " 关闭ycm的syntastic

"let g:syntastic_cpp_compiler='g++'  "change the compiler to g++ to support c++11.
let g:syntastic_cpp_compiler='clang++'  "change the compiler to clang to support c++11.
let g:syntastic_cpp_compiler_options = '-std=c++11 -stdlib=libc++' "set the options of g++( clang ) to suport c++11.
 

在工程目录下新建一个文件  .ycm_extra_conf.py, 里面最重要的参数就是 '-I' 和 ‘-isystem’ 下面指定的头文件所在的目录

 

内容如下


import os
import ycm_core
flags = [
    '-Wall',
    '-Wextra',
#    '-Werror',
    '-Wno-long-long',
    '-Wno-variadic-macros',
    '-fexceptions',
    '-DNDEBUG',
    '-Weverything',
    '-Wno-deprecated-declarations',
    '-Wno-disabled-macro-expansion',
    '-DUSE_CLANG_COMPLETER',
    '-Wno-float-equal',
    '-Wno-c++98-compat',
    '-Wno-c++98-compat-pedantic',
    '-Wno-global-constructors',
    '-Wno-exit-time-destructors',
    '-Wno-missing-prototypes',
    '-Wno-padded',
    '-Wno-old-style-cast',
    '-std=c++11',
    '-stdlib=libc++',
    '-x',
    'c++',
    '-I',
    '.',
    '-isystem',
    '/usr/include/c++/v1/',
    '-isystem',
    '/usr/include/',
    '-isystem',
    '/usr/local/include',
    '-isystem',

 

    '/usr/include/x86_64-linux-gnu',

 

    '-isystem',
    '/usr/include/x86_64-linux-gnu/bits'

]
compilation_database_folder = ''
if 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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