Upgrade to Ruby, Homebrew with Xcode 4.3
Download Xcode 4.3 from Apple.
Download Command Tools as well.
Install both.
Then:
brew update
brew install autoconf automake
brew install https://raw.github.com/Homebrew/homebrew-dupes/master/apple-gcc42.rb
rvm get head
rvm install 1.8.7
rvm install 1.9.3-head
You should have both working. Have a cookie.
Written by Pedro Sousa
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