Re: problems with getloadavg configuration

[Phil D'Amore]

This actually becomes a bit worse if you are using a newer autoconf.  
configure.ac is requiring 2.52 or later, but if you use one that is too 
new (saw this in 2.57), the AC_FUNC_GETLOADAVG check actually generates 
this:

# Make sure getloadavg.c is where it belongs, at configure-time.
test -f "$srcdir/$ac_config_libobj_dir/getloadavg.c" ||
 AC_MSG_ERROR([$srcdir/$ac_config_libobj_dir/getloadavg.c is missing])

Which stops you dead.  Earlier versions will politely just ignore the 
fact that the file is missing and move along.  The hack I use in the RPM 
I maintain was just to touch ./getloadavg in the same directory as 
configure, which is enough on an OS that provides getloadavg already, 
but that is not a real fix.  It would probably be good to at least set 
AC_CONFIG_LIBOBJ_DIR and drop an empty file in there, if not something 
with useful code as was succested below.

Later,

--
Phil D'Amore                             "Sometimes there is a fine line
Senior System Administrator               between criminally abusive
Red Hat, Inc                              behavior and fun."
Office: 919.754.3700 x44395                 -- Ted the Generic Guy
Cell:   919.641.3669                           (Dilbert 4/19/2003)


Mark Burgess wrote:

> On 16 May, Dave Love wrote:
>  
>
> > I've just noticed 2.0.7 and tried to build it on a system without
> > `getloadavg'.  That fails because it looks for a getloadavg.c and
> > can't find it.  See the autoconf doc:
> >
> > - Macro: AC_FUNC_GETLOADAVG
> >     Check how to get the system load averages.  To perform its tests
> >     properly, this macro needs the file `getloadavg.c'; therefore, be
> >     sure to set the `AC_LIBOBJ' replacement directory properly (see
> >     *Note Generic Functions::, `AC_CONFIG_LIBOBJ_DIR').
> >
> > I suggest adding 
> >
> > AC_CONFIG_LIBOBJ_DIR(pub)
> >
> > before the use of AC_FUNC_GETLOADAVG [why is it in `Checks for
> > programs.'?] and putting the getloadavg.c from the Emacs distribution
> > into pub.  Then in cfenvd.c you can remove the conditional on
> > HAVE_GETLOADAVG.  (Emacs uses getloadavg unconditionally after maybe
> > linking its own version, so it is portable.)
> >
> >    
>
> The loadavg test is a little odd because it refers to loadavg.c but does
> not provide one. I have not found a solution to this problem for all
> platforms. Since this is mainly for research purposes at present it
> can just be ignored.
> M
>
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