[R-SIG-Mac] 64-bit R compiling problem on Leopard
Prof Brian Ripley
ripley at stats.ox.ac.uk
Thu Dec 13 18:18:51 CET 2007
On Thu, 13 Dec 2007, Simon Urbanek wrote:
> Hi Herve,
> On Dec 12, 2007, at 7:06 PM, Herve Pages wrote:
>> Simon Urbanek wrote:
>>> FWIW: dual 32-bit and 64-bit binaries of current R 2.6.1 patched
>>> and R-
>>> devel for Leopard are available from
>>> They support all four architectures. To start 64-bit Intel R use R --
>>> arch=x86_64, for 64-bit ppc it is R --arch=ppc64.
>> We are trying to help some Bioconductor users to use these nightly
>> builds in 64-bit mode.
>> I noticed that when I start them with R --arch=x86_64,
>> 'sessionInfo()' and 'version' still report i386 (this is with the
>> latest R-2.6-branch r R-devel builds for Leopard available at http://r.research.att.com/)
> Yes - the platform is always i386 or powerpc since Mac OS X identifies
> as such (there is no 64-bit only Mac OS X).
I don't think so. The R.version setting is coming from what configure
identifies as the value: e.g. the 'arch' value is that of the C macro
R_CPU. The configure support files in R-devel have been updated, and do
give x86_64 using a 64-bit compiler on iMac/Leopard. I don't have a ppc
Mac, so not know (nor care) what the value is there.
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
More information about the R-SIG-Mac