Format your CMake scripts from inside emacs, using the python command line tool cmake-format.

• Install the cmake-format command line program. You can use pip:

$ pip install --user cmake-format

• Put cmake-format.el in your load-path.

Make sure that either cmake-format can be found in your $PATH or explicitly set cmake-format-command. After cmake-format is loaded you can invoke cmake-format-buffer to format the current buffer. To do it everytime you save your buffer the minor mode cmake-format-mode.

(defun my-cmake-mode-hook ()
  (cmake-format-mode 1))

(use-package cmake-format
  :init
  ;; optional: enable automatic formatting on save
  (add-hook 'cmake-mode-hook #'my-cmake-mode-hook)
  :config
  ;; optional:
  (setq cmake-format-command "/path/to/cmake-format"
        cmake-format-args '("list" "of" "flags")))