guile 2.0.7 build not recognising readline library

[Andrew Bernard]

Greetings List,

Building guile 2.0.7 under Linux Mint 14 (essentially Ubuntu 12.10) I am 
unable to see how to get readline built into the system.

The configure script reports:

   configure: WARNING: *** GNU Readline is too old on your system.
   configure: WARNING: *** You need readline version 2.1 or later.


This despite checking that readline is quite up to date on the system 
(version 6.2).

Can anybody advise?