Help with quotes needed

[Pavel Roskin]

Hello!

This line needs to be rewritten so that it works both with autoconf-2.13
and autoconf-2.49a and causes no warnings from Autoconf:

AC_MSG_CHECKING(extra library \"$i\")

$i needs to be expanded, quotes need to be printed.

Is it possible at all, or there is no such thing as portable configure.in?

The problem is that the above line comes from a macro file that is shared
between many GNOME programs. I have no powers to switch every GNOME
developer to autoconf-2.49a

Regards,
Pavel Roskin