Running examples in 'sundialr-Ex.R' failed
The error most likely occurred in:

> ### Name: cvode
> ### Title: cvode
> ### Aliases: cvode
> 
> ### ** Examples
> 
> # Example of solving a set of ODEs with cvode function
> # ODEs described by an R function
> ODE_R <- function(t, y, p){
+ 
+   # vector containing the right hand side gradients
+   ydot = vector(mode = "numeric", length = length(y))
+ 
+   # R indices start from 1
+   ydot[1] = -p[1]*y[1] + p[2]*y[2]*y[3]
+   ydot[2] = p[1]*y[1] - p[2]*y[2]*y[3] - p[3]*y[2]*y[2]
+   ydot[3] = p[3]*y[2]*y[2]
+ 
+   # ydot[1] = -0.04 * y[1] + 10000 * y[2] * y[3]
+   # ydot[3] = 30000000 * y[2] * y[2]
+   # ydot[2] = -ydot[1] - ydot[3]
+ 
+   ydot
+ 
+ }
> 
> # ODEs can also be described using Rcpp
> Rcpp::sourceCpp(code = '
+ 
+                 #include <Rcpp.h>
+                 using namespace Rcpp;
+ 
+                 // ODE functions defined using Rcpp
+                 // [[Rcpp::export]]
+                 NumericVector ODE_Rcpp (double t, NumericVector y, NumericVector p){
+ 
+                 // Initialize ydot filled with zeros
+                 NumericVector ydot(y.length());
+ 
+                 ydot[0] = -p[0]*y[0] + p[1]*y[1]*y[2];
+                 ydot[1] = p[0]*y[0] - p[1]*y[1]*y[2] - p[2]*y[1]*y[1];
+                 ydot[2] = p[2]*y[1]*y[1];
+ 
+                 return ydot;
+ 
+                 }')
Warning message:
In system(cmd) : 'make' not found

Error in Rcpp::sourceCpp(code = "\n\n                #include <Rcpp.h>\n                using namespace Rcpp;\n\n                // ODE functions defined using Rcpp\n                // [[Rcpp::export]]\n                NumericVector ODE_Rcpp (double t, NumericVector y, NumericVector p){\n\n                // Initialize ydot filled with zeros\n                NumericVector ydot(y.length());\n\n                ydot[0] = -p[0]*y[0] + p[1]*y[1]*y[2];\n                ydot[1] = p[0]*y[0] - p[1]*y[1]*y[2] - p[2]*y[1]*y[1];\n                ydot[2] = p[2]*y[1]*y[1];\n\n                return ydot;\n\n                }") : 
  Error 1 occurred building shared library.

WARNING: The tools required to build C++ code for R were not found.

Please download and install the appropriate version of Rtools:

http://cran.r-project.org/bin/windows/Rtools/

Execution halted