[Exim] Exim install keeps on breaking under FreeBSD

Hello All :-)

I am trying to install exim ver 4.22 under freebsd

The problem is that the installation breaks

[root@giles] /usr/ports/mail/exim# make install
===> Installing for exim-4.22
===> exim-4.22 depends on shared library: iconv.3 - found
===> Generating temporary packing list
===> Checking if mail/exim already installed
*** Error code 1

I have done the make deinstall

Is there anyway I can "force" the installation

Any ideas please

I would be most grateful

Kind regards

Godfrey