[Rcpp-devel] C++11 in Windows R package

Matteo Fasiolo matteo.fasiolo at gmail.com
Sun Jun 1 16:37:45 CEST 2014

Hi Dirk,

 thanks for the fix. Both the package created using
and my original
package work on Windows when the new flag is added and the new
RcppArmadillo version is used.

I was a bit surprised to see that they work also on win-builder, which (I
guess) links against the old RcppArmadillo version.



On Sat, May 31, 2014 at 8:16 PM, Dirk Eddelbuettel <edd at debian.org> wrote:

> Matteo,
> Try updating RcppArmadillo from the GitHub repo.  It now contains a release
> candidate for 0.4.300.7.0, based on an updated Armadillo 4.300.7 in which
> Conrad added
>        #define ARMA_DONT_USE_CXX11
> which you should set, either via a -DARMA_DONT_USE_CXX11  to, say,
> in src/Makevars (or just src/Makevars.win), or in your code before you
>        #include <RcppArmadillo.h>
> With this, and even though you turn on C++11 for _your code_ it will not
> use
> C++11 in Armadillo avoiding the issue experienced on Windows where g++
> 4.6.2
> is not new enough for some of the idioms used inside Armadillo.
> But as Armadillo is so neatly #ifdef'ed you should still be able to set up
> your package and proceed.
> Give it a spin and let us know how it goes. I plan to ship this version of
> RcppArmadillo to CRAN in the next few days.
> Cheers, Dirk
> --
> Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
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