[OpenAFS-devel] Minimum autoconf version

[Ken Hornstein]

>Part of the reason for this is that release tarballs, which contain 
>pre-generated configure scripts, are constructed on a machine on which the 
>only installed autoconf is 2.13.  This could probably be changed, if the 
>gatekeepers decided to move forward and start requiring new autoconf, but 
>until it is, tossing in 2.5x dependencies will break the release process.

The problem I have is that it's not obvious to me what's an autoconf
2.5x dependency.  I have the autoconf manual in front of me (it's from
2.52), and it doesn't tell me what's not in 2.13.  E.g., I used
AC_ARG_VAR() to declare KRB5CFLAGS and KRB5LIBS as precious, and AFAICT
there's no equivalant to that in 2.13.  I don't see a good way of
preventing things like that unless I cross-check _every_ macro I want
to use against 2.13 documentation.  That kinda sucks.

--Ken