On Tue, 26 Oct 2010, Simon Urbanek wrote:
On Oct 26, 2010, at 9:04 PM, Michael Spiegel wrote:
Hello,
Is it possible to build a 64-bit package on a 32-bit machine on
windows? I can cross-compile for x86, x86_64, and ppc on a 32-bit OS X
machine. And it looks like I could build a 32-bit library on a 64-bit
windows machine. But it doesn't look possible to build a 64-bit
library on a 32-bit windows machine?
Why not? It works for me without problems ...
Depends what is meant by 'build': I would pretty sure it does not mean
'R CMD build': it might mean R CMD INSTALL --build.
What you can't do is test loading, so you need INSTALL --no-test-load.
Multi-arch packages only test loading for the primary architecture,
which is why you can install for ppc on Intel Mac OS X machines. So
you can INSTALL bi-arch packages on Windows on an i386 OS, but you
cannot fully install a '64-bit package on a 32-bit machine on
windows'.
Given that almst everybody who wants to distribute 64-bit packages
nowadays wants bi-arch packages and needs access to a 64-bit OS for
testing, we don't bother to test and document what other combinations
might be possible. (We don't make it easy for you to install a
bi-arch R on a 32-bit OS either, to avoid end-user mistakes leading to
increased support demands.)
--
Brian D. Ripley, rip...@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
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