Error upgrading Ruby 1.9.2 to 1.9.3 using rvm OS X Lion

Question

Hi I'm trying to upgrade my ruby 1.9.2 to 1.9.3 using RVM. This is what I'm doing:

rvm upgrade 1.9.2
Are you sure you wish to upgrade from ruby-1.9.2-p290 to     ruby-1.9.3-p0? (Y/n): y

Then I get the following error:

Installing new ruby ruby-1.9.3-p0
Installing Ruby from source to: /Users/jeanosorio/.rvm/rubies/ruby-1.9.3-p0, this may take a while depending on your cpu(s)...

ruby-1.9.3-p0 - #fetching 
ruby-1.9.3-p0 - #extracted to /Users/jeanosorio/.rvm/src/ruby-1.9.3-p0 (already extracted)
Fetching yaml-0.1.4.tar.gz to /Users/jeanosorio/.rvm/archives
Extracting yaml-0.1.4.tar.gz to /Users/jeanosorio/.rvm/src
Configuring yaml in /Users/jeanosorio/.rvm/src/yaml-0.1.4.
Compiling yaml in /Users/jeanosorio/.rvm/src/yaml-0.1.4.
Installing yaml to /Users/jeanosorio/.rvm/usr
ruby-1.9.3-p0 - #configuring 
ERROR: Error running ' ./configure --prefix=/Users/jeanosorio/.rvm/rubies/ruby-1.9.3-p0 --enable-shared --disable-install-doc --with-libyaml-dir=/Users/jeanosorio/.rvm/usr ', please read /Users/jeanosorio/.rvm/log/ruby-1.9.3-p0/configure.log
ERROR: There has been an error while running configure. Halting the installation.
ERROR: Unable to install ruby ruby-1.9.3-p0.         Please install it manually to continue.

I'm using XCODE 4.2.1, any idea please???

This is the configure.log

[2012-06-20 11:31:41]  ./configure --prefix=/Users/jeanosorio/.rvm/rubies/ruby-1.9.3-p0 --enable-shared --disable-install-doc --with-libyaml-dir=/Users/jeanosorio/.rvm/usr 
configure: WARNING: unrecognized options: --with-libyaml-dir
checking build system type... x86_64-apple-darwin11.4.0
checking host system type... x86_64-apple-darwin11.4.0
checking target system type... x86_64-apple-darwin11.4.0
checking whether the C compiler works... no
configure: error: in `/Users/jeanosorio/.rvm/src/ruby-1.9.3-p0':
configure: error: C compiler cannot create executables
See `config.log' for more details

Answer 1

1. Update RVM curl -L get.rvm.io | bash -s stable && rvm reload curl -L get.rvm.io | bash -s stable && rvm reload
2. Install osx-gcc-installer
3. Read and follow instructions rvm requirements
4. Install ruby: rvm install 1.9.3

You could also use http://railsinsaler.org for new system installations.

Answer 2

Try upgrading to Xcode 4.3. With a clean install I was able to get 1.9.3-p125 working.

If that doesn't work, RVM has some tips: https://rvm.io/os/osx/