[R-SIG-Mac] 64-bit R-build on Intel Mac

[Sayan Pathak]

Hi,
I was trying to build the R build using the directions given at  
http://r.research.att.com/exp/.

I got through most of the steps till it asked me to run ./configure.  
My question is where is this file located? I am looking at /Library/ 
Frameworks/R.framework. I tried searching for file titled "configure"  
but got an empty return.

Is this the right place for me to look> Could someone please point me  
to the steps I should take.
Thanks,
Sayan