Byte compiler say an autoloaded function "might not be defined at runtime", why?

Byte compiler say an autoloaded function "might not be defined at runtime", why?

[Lennart Borgman]

When I byte compile a file with an autoload

  ;;;###autoload
 (define-minor-mode nxml-where-mode

the byte compiler says

  nxml-where.el:691:1:Warning: the following functions might not be
defined at runtime:
      nxml-where-mode

I think it wants to tell me something, but what? Does it want me to do
something?

Re: Byte compiler say an autoloaded function "might not be defined at runtime", why?

[Stefan Monnier]

> When I byte compile a file with an autoload
>   ;;;###autoload
>  (define-minor-mode nxml-where-mode
> the byte compiler says
>   nxml-where.el:691:1:Warning: the following functions might not be defined
>       at runtime: nxml-where-mode
> I think it wants to tell me something, but what? Does it want me to do
> something?

I just tried to byte-compile a file that contains just

   ;;;###autoload
   (define-minor-mode nxml-where-mode "asdg" :init-value nil
     (toto))

and I saw no such warning.


        Stefan

Re: Byte compiler say an autoloaded function "might not be defined at runtime", why?

[Lennart Borgman]

On Tue, Dec 30, 2008 at 9:12 PM, Stefan Monnier
<monnier@iro.umontreal.ca> wrote:
>> When I byte compile a file with an autoload
>>   ;;;###autoload
>>  (define-minor-mode nxml-where-mode
>> the byte compiler says
>>   nxml-where.el:691:1:Warning: the following functions might not be defined
>>       at runtime: nxml-where-mode
>> I think it wants to tell me something, but what? Does it want me to do
>> something?
>
> I just tried to byte-compile a file that contains just
>
>   ;;;###autoload
>   (define-minor-mode nxml-where-mode "asdg" :init-value nil
>     (toto))
>
> and I saw no such warning.

Same for me, but I see these warnings when I byte-compile nXhtml. I
tried to track it down, but failed so far. It is reproducable though.
Load nXhtml and do

   M-x nxhtmlmaint-start-byte-compilation