I'm following these instructions http://www.moncefbelyamani.com/how-to-install-xcode-homebrew-git-rvm-ruby-on-mac/#step-4 to install the tools I need to run Ruby 1.9.3 to develop apps with Rails on OS Mountain Lion. When running the line brew install autoconf automake apple-gcc42 I get curl: (22) The requested URL returned error: 404 Error: Download failed: http://r.research.att.com/tools/gcc-42-5
![Curl error 404 when installing apple-gcc42 via Homebrew](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)