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Re: AC_FD_MSG macros undefined

   >    > 	* sysdeps/i386/elf/configure.in: Require autoconf 2.53.
   >
   >    I don't think it makes sense to add this to each and every
   >    configure file, this will only cause confusion.
   >
   > I think that it should be noted in each and every configure.in
   > file.  It would create less confusion then more IMHO.

   This would cause us to update each and every configure file when we
   update the requirement which is not worth the pain IMO,

No need todo that, one can mix different versions of autoconf.  It is
only important that each configure.in depends on a version that groks
the actualy script.

For example, let [libc]/configure.in depend on autoconf 2.59, and
[libc]/sysdeps/i386/elf/configure.in on 2.13.  The user edits the
later, but not the former.  If the user has a version of autoconf that
is >2.13, the build process will go smothly.  If the user has a
version of autoconf that is <2.13, then he will get a nice error
stateing this fact.

Cheers.
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