[R-SIG-Mac] Change Rscript to 64-bit

[Alton Ing]

Thanks Simon

Does this mean the next stable version (R 2.15.3) from
http://cran.r-project.org/bin/macosx/ will have 64-bit support for
Mountain Lion (10.8)?

Also, with R 2.15.3 (nightly build) from http://r.research.att.com/,
can I uninstall it using the same instructions as:
http://cran.r-project.org/bin/macosx/RMacOSX-FAQ.html#How-can-R-for-Mac-OS-X-be-uninstalled_003f

The reason I ask is that I would eventually like to upgrade (by
uninstalling R 2.15.3 nightly build) to the next stable version of R
from http://cran.r-project.org/bin/macosx/ (assuming it will provide
64-bit support for Mountain Lion 10.8)

-Alton

On Sat, Feb 23, 2013 at 6:00 AM, Simon Urbanek
<simon.urbanek at r-project.org> wrote:
> On Feb 23, 2013, at 8:45 AM, Alton Ing wrote:
>
>> Hi Simon,
>>
>> I completely agree with you. However, on my 64-bit Mac Book Pro Retina
>> with Mountain Lion 10.8.2:
>>
>> Rscript -e 'sessionInfo()$platform'
>> [1] "i386-apple-darwin9.8.0/i386 (32-bit)"
>>
>> file `which Rscript`
>> /usr/bin/Rscript: Mach-O universal binary with 2 architectures
>> /usr/bin/Rscript (for architecture i386):     Mach-O executable i386
>> /usr/bin/Rscript (for architecture x86_64):   Mach-O 64-bit executable x86_64
>>
>> file -h `which Rscript`
>> /usr/bin/Rscript: symbolic link to
>> /Library/Frameworks/R.framework/Resources/bin/Rscript
>>
>> How can I get Rscript to DEFAULT to 64-bit mode like your computer?
>>
>
> Ah, hold on - you are on Mountain Lion and you may have installed R with 32-bit default since 10.8 was omitted from the list of supported 64-bit systems at the time - try installing latest R 2.15.3 RC from
> http://r.research.att.com/
>
> As a side note, I suspect that the architecture is actually irrelevant since Rscript as it turns out is just calling the R script but without setting R_ARCH so that is the R shell script that decides the architecture. So I have to apologize, I was wrong, it doesn't behave the way it should. We probably want to have Rscript pass the arch on if not set explicitly.
>
> Thanks,
> Simon
>
>
>> -Alton
>>
>> On Sat, Feb 23, 2013 at 5:29 AM, Simon Urbanek
>> <simon.urbanek at r-project.org> wrote:
>>>
>>> On Feb 23, 2013, at 5:38 AM, Alton Ing wrote:
>>>
>>>> To get Rscript running in 64-bit mode on your 64-bit Mac OS X (Mountain Lion):
>>>>
>>>> sudo ln -s /Library/Frameworks/R.framework/Resources/bin/Rscript
>>>> /usr/bin/Rscript32
>>>> sudo rm /usr/bin/Rscript
>>>> sudo echo '/Library/Frameworks/R.framework/Resources/bin/Rscript
>>>> --arch=x86_64 "$@"' > /usr/local/bin/Rscript64
>>>> sudo cp /usr/local/bin/Rscript64 /usr/bin/Rscript
>>>> sudo chown root:admin /usr/bin/Rscript
>>>> sudo chmod 775 /usr/bin/Rscript
>>>>
>>>
>>> This is probably the worst possible way to go about this - so readers please be warned - you really don't want to do that.
>>>
>>> We do provide Rscript in both variants so if you really want to force the one or another into /usr/bin/Rscript, just symlink the architecture you want.
>>>
>>> Cheers,
>>> Simon
>>>
>>>
>>>
>>>
>>>
>>>> If your old scripts encounter problems try using /usr/bin/Rscript32
>>>> instead. Otherwise, you can revert /usr/bin/Rscript back using:
>>>> sudo rm /usr/bin/Rscript
>>>> sudo ln -s /Library/Frameworks/R.framework/Resources/bin/Rscript
>>>> /usr/bin/Rscript
>>>>
>>>> -Alton
>>>>
>>>>
>>>> On Fri, Feb 22, 2013 at 10:57 PM, Prof Brian Ripley
>>>> <ripley at stats.ox.ac.uk> wrote:
>>>>> On 23/02/2013 04:32, Alton Ing wrote:
>>>>>>
>>>>>> How can we change Rscript to execute in 64-bit?
>>>>>>
>>>>>> The following script prints "i386-apple-darwin9.8.0/i386 (32-bit)" :
>>>>>>
>>>>>> #!/usr/bin/env Rscript
>>>>>> sessionInfo()$platform
>>>>>>
>>>>>> I want to run RHadoop (rmr2) locally on Mac OS X 10.8.2 (Mountain
>>>>>> Lion) but it only works with Rscript in 64-bit mode.
>>>>>
>>>>>
>>>>> Where is that one from (we can't tell?)
>>>>>
>>>>> On a CRAN installation
>>>>>
>>>>> /Library/Frameworks/R.framework/Resources/bin/exec/x86_64/Rscript
>>>>>
>>>>> is 64-bit.  And you can always run "Rscript --arch=x86_64" (not using env,
>>>>> though).
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> 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-SIG-Mac mailing list
>>>>> R-SIG-Mac at r-project.org
>>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>>>
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>>>>
>>>
>>
>>
>