Problem when I use the RcppArmadillo with the C++11

[guokai8]

When I use the RcppArmadillo I must add the "Sys.setenv("PKG_CXXFLAGS"="-std=c++11")" in the .cpp script before I compiled, and I could not just add the " // [[Rcpp::plugins(cpp11)]]" in the script to enable C++11. Here is the sessionInfo

sessionInfo()
R version 3.1.1 (2014-07-10)
Platform: x86_64-apple-darwin10.8.0 (64-bit)

locale:
[1] zh_CN.UTF-8/zh_CN.UTF-8/zh_CN.UTF-8/C/zh_CN.UTF-8/zh_CN.UTF-8

attached base packages:
[1] stats graphics grDevices utils datasets compiler methods
[8] base

other attached packages:
[1] dplyr_0.2 reshape2_1.4 Rcpp_0.11.3 plyr_1.8.1 pipeR_0.3-1

loaded via a namespace (and not attached):
[1] assertthat_0.1 parallel_3.1.1 stringr_0.6.2 tools_3.1.1

I wonder how could I just add the "// [[Rcpp::plugins(cpp11)]]" in the script or when I using the inline package?

[eddelbuettel]

This works for me

// [[Rcpp::plugins(cpp11)]]

// [[Rcpp::depends(RcppArmadillo)]]

#include <RcppArmadillo.h>

// [[Rcpp::export]]
arma::vec foo() {
    arma::vec x = { 1.1, 2.2 };
    return x;
}

via

R> sourceCpp("/tmp/arma11.cpp")
R> foo()
     [,1]
[1,]  1.1
[2,]  2.2
R> 

so I see no issue here.

In packages, you can use src/Makevars* (or DESCRIPTION). In files you have the plugin.