[Rcpp-devel] rcpp 0.10 on mac error with sourceCpp

I tried the example of sourceCpp on Mac mountain lion with R 2.15.1
with the following error (I hit the similar error in using RStan as
well).

I think the common problem here might be whether R_ARCH is set correctly.
On the Mac R_ARCH needs to be set in order for R CMD SHLIB, which is used
by both sourceCpp and RStan, to work.

For 64-bit Macs this value would be:

R_ARCH=/x86_64

What is R_ARCH set to in your session?

J.J.
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