pre-built 'gem'

Quick disclaimer: I've never dealt with ruby before, and Redmine is the only app I have that uses it. I've had Redmine for a couple days.

I was trying to do the following: "gem install mysql", but on a virtual environment where I don't want GCC installed; is there a way to either get pre-built files (I couldn't find anything regarding this) or build the files on another environment and move them?