On Mon, Apr 08, 2002 at 11:08:28AM +0200, Akim Demaille wrote:
>
> | Running autoheader for a second time does not generate these
> | warnings--is this autom4te?
>
> Yes. This is the remainder of a discussion that never really ended.
> autom4te is here to cache, so it looses some side effects, such as
> warnings. We could fight to have them cached too, but I don't know if
> it is really needed. Use --force wen you don't trust it.
OK. Are autom4te and m4sugar to abstract autoconf away from m4, to allow
replacement with e.g. autogen, so you can implement m4 with autogen?
> | The code in question is quite simple:
[snip error]
> I'm afraid you found a bug in 2.53. I tend to think it is the bug
> that was introduced in m4_bmatch. I observe the following:
[snip observations]
> this is the current CVS Autoconf. So the problem is gone. Sorry for the
> confusion. We plan to issue 2.54 in the near future.
OK, thanks. I did think that this was me--not keeping up fast enough
with new autoconf features!
Thanks for the explanation--I look forward to 2.54.
> | Another question is upgrading between different versions of autoconf.
> | Are there any version-specific macros I can use to cater for use with
> | incompatible versions of automake? (In m4 macros, not configure.ac.)
>
> I'm sorry, I don't understand exactly what you mean here.
If I write a macro that I want to work with several autoconf versions,
is there any way I can special-case what to do when run with a specific
version. For example, a macro containing the current version of
autoconf. If would also be possible to write a conditional macro using
this, to do one thing if the version is >= the requested version, or
another thing if less.
The reason I want this is so that I can upgrade the version of autoconf
I use, and update the m4 macros to work with it, but also support the
old versions of autoconf in use by others to make the transition
easier--it can be difficult to manage to get everyone to upgrade to the
same version of the autotools!
It's probably a bad idea, but could have some useful applications.
Regards,
Roger
--
Roger Leigh
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