this post was submitted on 04 Dec 2023
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How to native-compile your init file (alien.top)
submitted 11 months ago by DarlingEffect@alien.top to c/emacs@communick.news
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What's the best practice to have your custom elisp natively compiled, along with external packages?

So far I've only succeeded by doing the following:

  • Move my custom elisp to a new file (emacs-lib.el) which starts with (provide 'emacs-lib)

  • Manually run emacs-lisp-native-compile-and-load while visiting that file

  • Change my init file to load the library:

    (setq elisp-dir "~/config/elisp") (add-to-list 'load-path elisp-dir) (require 'emacs-lib)

After restarting Emacs, I've checked that many of my custom functions are indeed native-compiled.

It would be nice if I could have my init file take care of compiling the library when missing or outdated. Even better if I didn't need the separate file, but that's no big deal.

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[–] 7890yuiop@alien.top 1 points 11 months ago

If you ensure that everything that you want to be compiled is currently compiled, you can let https://github.com/emacscollective/auto-compile manage it from there.

[–] nv-elisp@alien.top 1 points 11 months ago

Properly package that code (sounds like you're most of the way there) and let your package manager handle it.

[–] geza42@alien.top 1 points 11 months ago

I simply use:

(defun my-recompile-init-eln ()
  (interactive)
  (byte-compile-file "~/.emacs.d/early-init.el")
  (native-compile "~/.emacs.d/early-init.el")
  (byte-compile-file "~/.emacs.d/init.el")
  (native-compile "~/.emacs.d/init.el"))

I use it manually, but I don't care too much because I don't edit my init files too often anymore. But it shouldn't be too hard to run this function automatically at boot if the .elc is outdated compared to the .el.