run the gtags command
requires global utility. please install
On OSX
brew install global
Create tags
:GtagsCreate
Update tags
:GtagsUpdate
Update at a Writing the file, default 0
let g:auto_gtags = 1
Create the tags in directory, default .
" dein.vim
call dein#add('zebult/auto-gtags.vim')
" neobundle.vim
NeoBundle 'zebult/auto-gtags.vim'