installing ruby library ports for ruby 1.8 instead of 1.6

[culley harrelson]

I am trying to get my ruby lirbary ports to install for 1.8 instead of 
1.6.  When I try this:

portinstall -m RUBY_VER=1.8 ruby-rmail

It is still isntalling it in the 1.6 directory.  I have also added:

RUBY_VER=1.8
RUBY_DEFAULT_VER=1.8

to /etc/make.conf and this doesn't help either.  Can someone point me in 
the right direction?

culley