Using OmniCppComplete and vim for C++ auto-completion

Get OmniCppComplete

Then install it: (It may overwrite some stuff... take care!)

ckdir ~/.vim/
cd ~/.vim/
unzip cppcomplete.zip


Then create and set your common tags file: (correct for your local installation locations)

~> ctags –R --c++-kinds=+p --fields=+iaS --extra=+q \
    -f ~/vim/commontags \
    ~/dev/myTools/include \
    /usr/include \
    /use/lib/boost/include /usr/lib/qt3/include

------- .vimrc:
set tags+=~/vim/commontags
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Add mapping to create/update local (CWD) project tags files:

------- .vimrc:
map :!ctags -R --c++-kinds=+p --fields=+iaS --extra=+q .
set tags+=./tags
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Set up some default options:

------- .vimrc:
" OmniCompletionOptions
set completeopt=menu,menuone
let OmniCpp_NamespaceSearch=2
let OmniCpp_ShowPrototypeInAbbr=1
" let OmniCpp_MayCompleteScope=1
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Then add any convenience macros:

------- .vimrc:
" Smart VS-type <tab-completion>
function! CompleteTab(direction)
  let prec = strpart( getline('.'), 0, col('.')-1 )
  if prec =~ '^\s*$'
    if "backward" == a:direction
      return "\<bs>"
    else
      return "\<tab>"
    endif
  endif

  if exists('&omnifunc') && &omnifunc == 'omni#cpp#complete#Main' && prec =~ '[\.>]\s*[~]\?[a-zA-Z_]*[(]\?$'
    " Class completion... use normal direction
    " Use this with omniCompletion
    if "backward" == a:direction
      return "\<c-p>"
    else
      return "\<c-n>"
    endif
  endif

  " else use generic completion: last-seen / reverse-order
  if "backward" == a:direction
    return "\<c-n>"
  else
    return "\<c-p>"
  endif
endfunction

inoremap <tab><c-r>=CompleteTab("forward")<cr>
inoremap <s-tab><c-r>=CompleteTab("backward")<cr>
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