Trouble installing ruby 1.9.3

I am looking to install ruby 1.9.3. I currently have ruby 1.9.2 installed

Mac Os X
Xcode Version 4.3.2
I have dumped all the previous version of Xcode

I have read a ton of articles and I tried out the steps that are detailed in http://stackoverflow.com/a/9651747/1392225

This is the error that I have

ruby-1.9.3-p125 - #fetching 
 ruby-1.9.3-p125 - #extracted to /Users/kai/.rvm/src/ruby-1.9.3-p125 (already extracted)
 WARN: Patch 'xcode-debugopt-fix-r34840.diff' not found.
 ruby-1.9.3-p125 - #configuring 
 ruby-1.9.3-p125 - #compiling 
 ERROR: Error running 'make ', please read /Users/kai/.rvm/log/ruby-1.9.3-p125/make.log
 ERROR: There has been an error while running make. Halting the installation.
 

The error log seems to point to this

compiling readline.c
 readline.c: In function 'username_completion_proc_call':
 readline.c:1499: error: 'username_completion_function' undeclared (first use in this function)
 readline.c:1499: error: (Each undeclared identifier is reported only once
 readline.c:1499: error: for each function it appears in.)
 make[2]: *** [readline.o] Error 1
 make[1]: *** [ext/readline/all] Error 2
 make: *** [build-ext] Error 2
 

Any ideas?

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