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70 lines
2.4 KiB
EmacsLisp
70 lines
2.4 KiB
EmacsLisp
;; make-deps.el --- compute make dependencies for Elisp sources
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;;
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;; Copyright © Austin Clements
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;;
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;; This file is part of Notmuch.
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;;
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;; Notmuch is free software: you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;;
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;; Notmuch is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with Notmuch. If not, see <https://www.gnu.org/licenses/>.
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;;
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;; Authors: Austin Clements <aclements@csail.mit.edu>
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;;; Code:
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(defun batch-make-deps ()
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"Invoke `make-deps' for each file on the command line."
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(setq debug-on-error t)
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(dolist (file command-line-args-left)
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(let ((default-directory command-line-default-directory))
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(find-file-literally file))
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(make-deps command-line-default-directory))
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(kill-emacs))
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(defun make-deps (&optional dir)
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"Print make dependencies for the current buffer.
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This prints make dependencies to `standard-output' based on the
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top-level `require' expressions in the current buffer. Paths in
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rules will be given relative to DIR, or `default-directory'."
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(setq dir (or dir default-directory))
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(save-excursion
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(goto-char (point-min))
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(condition-case nil
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(while t
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(let ((form (read (current-buffer))))
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;; Is it a (require 'x) form?
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(when (and (listp form) (= (length form) 2)
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(eq (car form) 'require)
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(listp (cadr form)) (= (length (cadr form)) 2)
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(eq (car (cadr form)) 'quote)
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(symbolp (cadr (cadr form))))
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;; Find the required library
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(let* ((name (cadr (cadr form)))
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(fname (locate-library (symbol-name name))))
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;; Is this file and the library in the same directory?
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;; If not, assume it's a system library and don't
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;; bother depending on it.
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(when (and fname
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(string= (file-name-directory (buffer-file-name))
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(file-name-directory fname)))
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;; Print the dependency
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(princ (format "%s.elc: %s.elc\n"
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(file-name-sans-extension
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(file-relative-name (buffer-file-name) dir))
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(file-name-sans-extension
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(file-relative-name fname dir)))))))))
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(end-of-file nil))))
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;;; make-deps.el ends here
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