[CentOS] R packaging question

I have been working on packaging (for internal use only) multiple
versions of R (eg 2.14.1, 2.14.2, 2.15.0) such that I can install these
RPMs and provide the different versions of R (especially 2.14.x and
2.15.x) to the biostatisticians that require them. I have been messing
around with the R.spec file but I have been unable to get the package to
provide R in the location I would like:

/usr/lib64/R-2.14.1/
/usr/lib64/R-2.15.0/

Now I know this can be done but I am just having some difficulty in
getting it to work correctly. I have tried multiple variations in the
spec playing with adding -%{version} to the paths within the spec file,
as well as even using -libdir=/usr/lib64/R-%{version} which  works to a
point, but basically provides:

/usr/lib64/R-2.14.1/R/
/usr/lib64/R-2.15.0/R/

I have attached the spec file I have been modifying and would appreciate
any insights into getting this packaging correct.

Thank you in advance for any assistance
Michael Weiner

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