How to install rpy under mac os x?

[This should probably go to R-SIG-Mac, so I'm moving the thread there.]

I'm tryin' to install Rpy under Mac Os X but I receive the following
message:

I suppose you're talking about the alpha releases of RPy2 rather than  
the stable 1.0 series?

I have no idea what's going wrong here, but for what it's worth, I  
have no problems building both RPy-1.0.3 and RPy-2.0.0-a3 on my  
system, which seems to have the same setup as you (Mac OS X 10.5.4  
Intel, CRAN R 2.7.2, Apple-supplied Python 2.5.1).

host46-209-dynamic:rpy usernone$ python setup.py install
running install
running build
running build_py
running build_ext
building 'rpy2.rinterface.rinterface' extension
gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -
fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd -
fno-common -dynamic -DNDEBUG -g -O3 -DR_INTERFACE_PTRS=1 -
DCSTACK_DEFNS=1 -DRIF_HAS_RSIGHAND=1 -I/Library/Frameworks/ 
R.framework/
Resources/include -Irpy/rinterface -I/Library/Frameworks/
Python.framework/Versions/2.5/include/python2.5 -c rpy/rinterface/
array.c -o build/temp.macosx-10.3-fat-2.5/rpy/rinterface/array.o

I'm getting quite a different gcc call at this point, though:

gcc -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused- 
madd -fno-common -dynamic -DNDEBUG -g -Os -Wall -Wstrict-prototypes - 
DMACOSX -I/usr/include/ffi -DENABLE_DTRACE -arch i386 -arch ppc -pipe - 
DR_INTERFACE_PTRS=1 -DCSTACK_DEFNS=1 -DRIF_HAS_RSIGHAND=1 -I/Library/ 
Frameworks/R.framework/Resources/include -Irpy/rinterface -I/System/ 
Library/Frameworks/Python.framework/Versions/2.5/include/python2.5 -c  
rpy/rinterface/array.c -o build/temp.macosx-10.5-i386-2.5/rpy/ 
rinterface/array.o

Actually, this part of your log

 -o build/temp.macosx-10.3-fat-2.5/rpy/rinterface/array.o

suggests that RPy (or Python) thinks it's compiling on OS X 10.3, and  
it uses

 -isysroot /Developer/SDKs/MacOSX10.4u.sdk

instead of the proper OS X 10.5 SDK.

Perhaps something is wrong with your configuration (is you XCode up to  
date?) or you're using a non-standard Python binary?




Best regards,
Stefan Evert

[ stefan.evert at uos.de | http://purl.org/stefan.evert ]