Advice sought on Installing Ruby 1.9 on OSX

I gave in and got a macbook about a month ago, and I'm getting around
to doing an install of Ruby 1.9.

I've already got the macports version of Ruby 1.8 installed. That got
put under /opt/local

Before I do make/make install, I'm wondering what the best configure
options are to keep things separated. Is
   ./configure --program-suffix=1.9
enough (configure defaults /usr/local for installation).

Or is there something else I need to consider?

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Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/