Re: Question on AC_PREREQ

[Noah Misch]

On Mon, Dec 10, 2007 at 09:40:48AM -0800, Ben Pfaff wrote:
> Noah Misch <address@hidden> writes:
> > On Mon, Dec 10, 2007 at 05:46:30AM +0100, Sebastian Pipping wrote:
> >> I am running Autoconf 2.61a here. I want to add a version
> >> guard to my configure.in and surprisingly adding
> >> 
> >>    AC_PREREQ(2.61b)
> >> 
> >> gives an error (from aclocal already) as expected
> >> but
> >> 
> >>    AC_PREREQ(2.7)

I accidentally left out this line of context from the original post:

     doesn't make it stop. What am I doing wrong? 

> > AC_PREREQ uses GNU `strverscmp'-style comparisons.
> > Essentially, the version is two dot-separated integers with an
> > optional trailing letter.  Therefore, 2.61 > 2.10 > 2.9 > 2.7.
> 
> And therefore one would expect that AC_PREREQ(2.7) would succeed
> under Autoconf 2.61a.  In fact, it does succeed when I test it on
> my machine here.  The OP implies that it fails on his machine.  I
> don't know why it would, though.

As I understand it, AC_PREREQ does succeed ("doesn't make it stop") on the OP's
system as well.