Upgrading a project to libtool and maintaining old library version

A project wishes to upgrade to use libtool to build shared libraries
but maintain compatibility with the old library versioning scheme. Is
-version-info and -release *it* for how to tell libtool to handle
library versions?

Old (on Redhat Linux):
  libfontconfig.so -> libfontconfig.so.1
  libfontconfig.so.1 -> libfontconfig.so.1.0
  libfontconfig.so.1.0
  SONAME: libfontconfig.so.1

Can I duplicate this with a libtool-generated libfontconfig shared
library?

-- 
albert chin (china@xxxxxxxxxxxxxxxxxx)