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Re: [PATCH] Document AC_FUNC_FORK cache variables

From: Eric Blake
Subject: Re: [PATCH] Document AC_FUNC_FORK cache variables
Date: Fri, 04 Mar 2011 13:58:55 -0700
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On 03/04/2011 01:56 PM, Ralf Wildenhues wrote:
> Hello Eric,
> in
> I asked the following:
> * Ralf Wildenhues wrote on Mon, Dec 20, 2010 at 07:57:11AM CET:
>> * Colin Watson wrote on Mon, Dec 20, 2010 at 12:33:46AM CET:
>>> I maintain a package where I'd like to fail at configure time if fork
>>> doesn't work.  This is slightly awkward because 'info autoconf' doesn't
>>> document the cache variables for AC_FUNC_FORK, so I don't know whether I
>>> can rely on them in future versions of Autoconf.  Would you be willing
>>> to document them as follows and thereby promise that they will continue
>>> to work?
> My preference would be to drop my proposed patch (see link above)
> and instead push the following in Colin's name, and add him to THANKS.
> Any issues with that?
> Thanks,
> Ralf
> 2011-03-04  Colin Watson  <...>  (tiny change)
>           Ralf Wildenhues  <...>
>       * doc/autoconf.texi (Particular Functions): Document AC_FUNC_FORK
>       cache variables.
>         * THANKS: Update.

This works for me; Colin, are you okay with the patch being in your name?

> +The results of this macro are cached in the @code{ac_cv_func_fork_works}
> +and @code{ac_cv_func_vfork_works} variables.  In order to override the
> +test, you also need to set the @code{ac_cv_func_fork} and
> address@hidden variables.
>  @end defmac
>  @defmac AC_FUNC_FSEEKO

Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library

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