[Python-Dev] Bumping autoconf from 2.68 to 2.69

[Petri Lehtinen]

Trent Nelson wrote:
> > build breaking is another matter, of course.  If we are
> > going to mandate a specific version again, that should be documented and
> > checked for.
>
>     My preference: bump to 2.69 and set AC_PREREQ(2.69).  If 2.69 proves
>     unworkable, revert back to 2.68 and AC_PREREQ(2.68).
>
>     I definitely like the idea of explicitly setting the version being
>     used via AC_PREREQ, as this will prevent accidental version churn
>     being checked in by a committer inadvertently.

Bear in mind that AC_PREREQ sets the minimum required version. It
cannot be used to prevent from running newer autoconf in the future.

Petri