flycheck erlang otp

user.el

;; customize flycheck for otp standard directory structure
(require 'flycheck)
(flycheck-define-checker erlang-otp
  "An Erlang syntax checker using the Erlang interpreter."
  :command ("erlc" "-o" temporary-directory "-Wall"
            "-I" "../include" "-I" "../../include"
            "-I" "../../../include" source)
  :error-patterns
  ((warning line-start (file-name) ":" line ": Warning:" (message) line-end)
   (error line-start (file-name) ":" line ": " (message) line-end)))

(add-hook 'erlang-mode-hook
          (lambda ()
            (flycheck-select-checker 'erlang-otp)
            (flycheck-mode)))