command line tools for new 10.9 OSX for ruby gems?

Question

After installing OSX Mavericks 10.9 demo, Im getting this after running bundle

    Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native ext         


        

Answer 1

I just upgraded mountain lion to mavericks and received the above message.

I ended up launching XCode and it asked to install components automatically. After that was completed I re-bundled and it worked.

Answer 2

For others running into this problem, I had to also install apple-gcc via brew to get it to work:

brew install apple-gcc42