[R-SIG-Mac] 64-bit from source

[Sean Davis]

I did a little surfing but did not find a recent answer to how to build
64-bit R from source.  I use ESS/emacs, so I don't want to build the GUI
right now; this is mainly so that I can have a 64-bit devel version of R
running.  I have xcode tools 2.4 and gfortran running and routinely build R
from source, but not 64-bit.

Any suggestions or links that I missed are appreciated.

Thanks,
Sean