[cairo] patch for autogen

[Carl Worth]

On Mon, 16 Aug 2004 16:19:03 -0700 (PDT), Bryce Harrington wrote:
> I ran into kind of an oddball problem configuring cairo on my gentoo
> system.  When I ran ./autogen.sh for cairo it indicated that my autoconf
> and automake versions were too old, however:

Bryce,

Thanks for reporting this problem.

Sounds like more false negatives in the version checks to me, but I'm
not sure since I don't know exactly which versions we actually require.

> diff -u -p -u -r1.58 configure.in
> --- configure.in        21 Jun 2004 22:13:52 -0000      1.58
> +++ configure.in        16 Aug 2004 23:15:03 -0000
> @@ -1,3 +1,5 @@
> +
> +AC_PREREQ(2.50)
>  AC_INIT(src/cairo.h)

That much seems quite reasonable. If we do need this version (or
greater) of autoconf, then I would greatly prefer to use a supported
means of declaring that rather than rolling our own version check in the
bootstrapper.

> +# Use automake-1.7 if available.  Some automake installations will try to
> +# provide an earlier version of automake if run without specifying
> +if (automake-1.7 --version) < /dev/null > /dev/null 2>&1 ; then
> +    AUTOMAKE=automake-1.7
> +    ACLOCAL=aclocal-1.7
> +fi

I don't like that at all, since it looks for a specific version rather
than a >= relationship. The right fix here might be to just eliminate
the check in autogen.sh on the version of automake. (See my other recent
post on this subject.)

-Carl