Monday, September 14, 2020

Enable autocomplete for C++ on vim

 Assuming you have a recent version of vim (8.1 should do) this is a lot easier now.

  1. If you don't already have Vundle:
    git clone ~/.vim/bundle/Vundle.vim
  2. Add the following section to ~/.vimrc. The vundle section may already be there in which case you just add the Plugin line for Valloric/YouCompleteMe.
    set rtp+=~/.vim/bundle/Vundle.vim
    call vundle#begin()
    Plugin 'VundleVim/Vundle.vim'
    Plugin 'Valloric/YouCompleteMe'
    call vundle#end()
  3. Clone YouCompleteMe.
    git clone ~/.vim/bundle/YouCompleteMe
  4. Update YouCompleteMe.
    cd ~/.vim/bundle/YouCompleteMe && git submodule update --init --recursive
  5. Install the clang completer. This works but a better way may be to configure clangd.
    ./ --clang-completer
  6. Add a file to some ancestor directory of your C++ projects.
    def Settings( **kwargs ):
      return {
        'flags': [ '-x', 'c++', '-Wall', '-Wextra', '-Werror' ],

    There are other ways of doing the above that can give you more flexibility in your own sandbox. You can check them here:

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