gistfile1.vim

function! RunBuildCommand(cmd)
  let l:BuildLog = "build/vim.log"
  if bufname("%") != ""
    silent write
  endif
  echo "Building... "
  let l:StartTime = reltime()
  exec "silent !" . a:cmd . " >" . l:BuildLog . " 2>&1"

  " xcodebuild does NOT set exit code properly, so check the build log
  exec "silent !grep -q '^\*\* BUILD FAILED' " . l:BuildLog
  redraw!
  if !v:shell_error
    set errorformat=
      \%f:%l:%c:{%*[^}]}:\ error:\ %m,
      \%f:%l:%c:{%*[^}]}:\ fatal\ error:\ %m,
      \%f:%l:%c:{%*[^}]}:\ warning:\ %m,
      \%f:%l:%c:\ error:\ %m,
      \%f:%l:%c:\ fatal\ error:\ %m,
      \%f:%l:%c:\ warning:\ %m,
      \%f:%l:\ Error:\ %m,
      \%f:%l:\ error:\ %m,
      \%f:%l:\ fatal\ error:\ %m,
      \%f:%l:\ warning:\ %m
    execute "cfile! " . l:BuildLog
  else
    echo "Building... OK - " . reltimestr(reltime(l:StartTime)) . " seconds"
  endif
endfunction