How do I tell the C++ compiler on a supercomputer that my R package requires C++0x?

I have written and built an R package that depends on Rcpp and requires the C++0x standard (for using the tgamma function in C++). I have tested the package on various desktop computers and operating systems, and it always seems to install and work fine. However, I would also like to use the package on an HPC server. When I try to install the package there in my local R library tree using R CMD INSTALL test (where test is the name of the package), I get the following error message from the compiler:

/usr/include/c++/4.4.7/c++0x_warning.h(31): catastrophic error: #error directive: This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options. #error This file requires compiler and library support for the upcoming \ ^

compilation aborted for Metropolis_Sampler_Beta_Edgewise_Cpp_Statistics.cpp (code 4) make: *** [Metropolis_Sampler_Beta_Edgewise_Cpp_Statistics.o] Error 4 ERROR: compilation failed for package ‘test’

It basically tells me that I should enable C++0x support when the compiler is called (as in this post). Yet, I thought adding the statement CXX_STD = CXX11 to the src/Makevars file in the R package would actually tell the compiler that this version needs to be used. And indeed that seems to be the case on various desktop computers I have tried. So my question is: how can I tell the compiler on the server that this C++ version should be used for compilation? Alternatively, how else can I install the package?

On the server, I load the module for R by entering module load math/R on the terminal before trying to install the package, and it reports back that the following modules were loaded:

Loading module dependency 'compiler/intel/13.1'.

Loading module dependency 'numlib/mkl/11.0.5'.