rvm cannot install ruby-1.9.3-p484

Question

I am trying to update my OctoPress Blog and get the error

ruby-1.9.3-p484 is not installed.

When I type the command

rvm install ruby-1.9.3-p484 I get the erros:

Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.8/x86_64/ruby-1.9.3-p484.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for osx.
Error: No available formula for gcc46 
Installing requirements for osx.
Updating system.........
Error running 'requirements_osx_brew_update_system ruby-1.9.3-p484',
please read /Users/stevenbrooks1111/.rvm/log/1386191431_ruby-1.9.3-p484/update_system.log
Requirements installation failed with status: 1.

Not sure what's going on here. I currently have

ruby-1.9.3-p429 [ x86_64 ]
ruby-2.0.0-p195 [ x86_64 ]
ruby-2.0.0-p353 [ x86_64 ]

installed on my computer.

Answer 1

Maybe RVM is out of date. Try

rvm get head
rvm install 1.9.3

Edit

You are also getting an error about gcc46. Ruby 1.9.3 shouldn't need gcc, since you already have clang. Try this:

rvm install 1.9.3 --with-gcc=clang

Answer 2

• Check if you have an old version of Xcode installed.

In my case, I had the newest Command Line Tools but also the old version of Xcode.

I thought it'd be all fine. But it wasn't.