Re: AC_CONFIG_HEADERS and autoheader

[Stepan Kasal]

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.

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.

Attached please find a first approximation of the documentation
patch.  Wdyt?

Have a nice day,
        Stepan Kasal

autoconf-20061205-doc-ah.patch
Description: Text document