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I am attempting to secure my emacs 28.1 following the well-known guide here. After running into a (seemingly common) error with the bad certificate check I was lead to this emacs stackexchange post. The solution, allegedly, was to add the following lines to the intialization ~/.emacs.d/init.el:

(if (fboundp 'gnutls-available-p)
    (fmakunbound 'gnutls-available-p))

However, I am unable to get this to work. I ran M-x eval-expression and did (message system-configuration-options) which gave me --with-gnutls=yes.

But when I do M-x eval-expression and do (gnutls-available-p) I get an error:

Debugger entered--Lisp error: (void-function gnutls-available-p)
  (gnutls-available-p)
  eval((gnutls-available-p) t)
  eval-expression((gnutls-available-p) nil nil 127)
  funcall-interactively(eval-expression (gnutls-available-p) nil nil 127)
  call-interactively(eval-expression record nil)
  command-execute(eval-expression record)
  execute-extended-command(nil "eval-expression" "eval-expression")
  funcall-interactively(execute-extended-command nil "eval-expression" "eval-expression")
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command) 

I cannot for the life of me figure out how this function is void as it should be defined in my case. Confirming this I see M-x eval-expression with (fboundp 'gnutls-available-p) is nil. I also attempted to evaluate the conditional and got nil as a response.

So it seems that a function I expect is unbound. But, when evaluated with fboundp I at least don't get an error. Further, it seems that the condition only fails to work in the init.el. Is there a require I am missing that may help me here? I've been at this an hour and cannot work around it.

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  • Does the configure output (before running make) when building Emacs from source indicate that gnutls is present/detected?
    – lawlist
    Feb 23, 2023 at 17:48
  • Well, you yourself undefined it with that (fmakunbound 'gnutls-available-p), so of course Emacs is going to complain about a void-function when you try to call it. It seems to me that the advice in the second link is more than a little bogus.
    – NickD
    Feb 24, 2023 at 3:22

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