[Rcpp-devel] an error message from RcppArmadillo: sourceRcpp

Hi there,

I get RcppArmadillo running, but still has a problem
with Rcpp::sourceCpp(). My code is here:

#include <Rcpp.h>
#include <RcppArmadillo.h>
using namespace Rcpp;

//[[Rcpp::export]]
NumericMatrix add(NumericMatrix b){

  return b.n_cols;
}

Rcpp::sourceCpp('add.cpp')

g++ -m64 -I"C:/R/R-215~1.2/include" -DNDEBUG
-I"C:/Users/Aileen/Documents/R/win-library/2.15/Rcpp/include"
-I"d:/RCompile/CRANpkg/extralibs64/local/include"     -O2 -Wall
 -mtune=core2 -c add.cpp -o add.o add.cpp:2:27: fatal error:
RcppArmadillo.h: No such file or directory compilation terminated. make:
*** [add.o] Error 1
Error in Rcpp::sourceCpp("add.cpp") :
  Error 1 occurred building shared library.

Could anyone tell me what I did wrongly? Thank you.

Regards,
Aileen