On Fri, 2 Jul 2010, Jeffrey Horner wrote:
> Hi,
>
> Is this sufficient?
Yes, if you want to know in R code.
> if (.Machine$sizeof.pointer==4){
> cat('32\n')
> } else {
> cat('64\n')
> }
>
> Or is it better to test something in R.version, say os?
Not 'os' (the OS is the same), but 'arch' changes. Just as on a Mac or on Linux.
> I'd like to use this to specify appropriate linker arguments when
> building the RMySQL windows package.
If you mean *installing* (R CMD INSTALL, not R CMD build) the documented way is to use the environment variable R_ARCH: there are also make variables available, e.g. WIN. See http://www.stats.ox.ac.uk/~ripley/Win64/W64porting.html (which is linked from the appropriate manuals).
>
> Jeff
> --
> http://biostat.mc.vanderbilt.edu/JeffreyHorner
>
> ______________________________________________
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>
-- Brian D. Ripley, ripley_at_stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-develReceived on Sat 03 Jul 2010 - 06:49:59 GMT
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