On Sep 19, 2009, at 10:46 AM, Laurent Gautier wrote:

>
> Did you try with'--arch x86_64' added to the 'extra_link_args' in  
> setup.py (lines 135-138 of setup.py) ?

Thanks. However I also had to add '--arch x86_64' to the statement in  
get_rconfig so that when obtaining cppflags via R CMD config, it would  
return them for x86_64

as a result rinterface.so contains a x86_64 version.

However, when I import rpy2 from within Python (2.6.2, 64 bit), it  
still loads the i386 version.

I went into rinterface.so and manually added the "--arch=x86_64"  
string to the argument list for Rf_initialize_R.

However, after recompiling and installing, rpy2 starts R, but I get  
the message:

WARNING: unknown option --arch=x86_64

As far as I can tell from the R help page this is a valid option.

So it seems that the problem lies in starting the R process with the  
64 bit version

----------------------------------------------------
Rajarshi Guha        | NIH Chemical Genomics Center
http://www.rguha.net | http://ncgc.nih.gov
----------------------------------------------------
Q:  Why did the mathematician name his dog "Cauchy"?
A:  Because he left a residue at every pole.



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