Re: AC_CONFIG_HEADERS and autoheader

[Patrick Welche]

On Tue, Dec 05, 2006 at 08:44:59PM +0100, Stepan Kasal wrote:
> Hello,
> 
> On Tue, Dec 05, 2006 at 10:17:57AM -0800, Paul Eggert wrote:
> > Patrick Welche <address@hidden> writes:
> > > Is that AC_CONFIG_HEADERS syntax simply not allowed? (missing file name)
> > 
> > The documentation doesn't seem to allow it.
> >
> > But also, the documentation seems to say that you can have as many files
> > as you like, not just 3.  [...]
> 
> Indeed, you can have any number of input files for AC_CONFIG_HEADERS,
> as for AC_CONFIG_FILES.
> So you can have
>       AC_CONFIG_HEADERS([defines.h:def1.h:def2.h:def3.h:def4.h])
> 
> And if this is the first config header in the configure.ac, which of
> the input files should be picked by autoheader?
> I do not see a better answer than what the current implementation
> has: autoheader picks the first one.

Right: and how do you tell which to prepend and which to append?!
As you say the documentation isn't clear..

> Consequently, I think Patrick's patch should not be accepted.
> 
> But I think we should improve the documentation; most importantly, we
> should point out that AH_BOTTOM is usually better that multiple input
> files.

Sounds good!

Patrick