Dan Hill

Installing REE, Rails, XCode on Lion 10.7

A quick guide to installing Ruby Enterprise Edition, Rails, etc. on Mac OS X Lion. The main problem is that the latest XCode (4.2) ships with a messed up version of gcc. So:

1. Install XCode 4.2 from the App Store.

2. That actually places an App in Applications called ‘Install XCode’. Run that.

3. Install OSX GCC from here: https://github.com/kennethreitz/osx-gcc-installer This is a much better version of gcc, plus associated libs.

4. Install RVM:

bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)

5. Install REE:

sudo CC=/usr/bin/gcc-4.2 rvm install ree

6. Use REE:

rvmsudo rvm use ree --default

7. (Optional) Install brew:

ruby -e "$(curl -fsSL https://raw.github.com/gist/323731)"

8. Rails, etc.

rvmsudo gem install rails

That’s it! Leave a comment if you have any better advice, or questions.