R function call from C ++ on Windows

Question

I am trying to call R functions from C ++ on Windows. I use MinGW to compile the program, but it throws an error when compiling. Code (taken from Dirk) and compilation error:

#include <iostream> using namespace std; #include "RInside.h" // for the embedded R via RInside Rcpp::NumericMatrix createMatrix(const int n) { Rcpp::NumericMatrix M(n,n); for (int i=0; i<n; i++) { for (int j=0; j<n; j++) { M(i,j) = i*10+j; } } return(M); } int main(int argc, char *argv[]) { const int mdim = 4; // let the matrices be 4 by 4 SEXP ans; RInside R(argc, argv); // create an embedded R instance Rcpp::NumericMatrix M = createMatrix(mdim); // create and fill a sample data Matrix R["M"] = M; // assign C++ matrix M to R 'M' var std::string evalstr = "\ cat('Running ls()\n'); print(ls()); \ cat('Showing M\n'); print(M); \ cat('Showing colSums()\n'); Z <- colSums(M); print(Z); \ Z"; // returns Z ans = R.parseEval(evalstr); // eval the init string -- Z is now in ans Rcpp::NumericVector v(ans); // convert SEXP ans to a vector of doubles for (int i=0; i< v.size(); i++) { // show the result std::cout << "In C++ element " << i << " is " << v[i] << std::endl; } return 0; } 

Compile:

 g++ -I "C:\ProgramFiles\R\R-2.14.0\library\RInside\include" -I "C:\Progra mFiles\R\R-2.14.0\library\Rcpp\include" -I "C:\ProgramFiles\R\R-2.14.0\include" RFunctions.cpp -o sh1.exe 

Error:

 C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text+0x19a): und efined reference to `RInside::RInside(int, char const* const*, bool)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text+0x1ee): und efined reference to `RInside::operator[](std::string const&)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text+0x26d): und efined reference to `RInside::parseEval(std::string const&)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text+0x35b): und efined reference to `RInside::~RInside()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text+0x3e1): und efined reference to `RInside::~RInside()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp7RO bjectC2Ev[Rcpp::RObject::RObject()]+0x8): undefined reference to `vtable for Rcp p::RObject' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp7RO bjectC2Ev[Rcpp::RObject::RObject()]+0xd): undefined reference to `_imp__R_NilVal ue' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN7RInside 5ProxyD1Ev[RInside::Proxy::~Proxy()]+0xd): undefined reference to `Rcpp::RObject ::~RObject()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EED2Ev[Rcpp::Vector<14>::~Vector()]+0x16): undefined reference to `Rcpp ::RObject::~RObject()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EED1Ev[Rcpp::Vector<14>::~Vector()]+0x16): undefined reference to `Rcpp ::RObject::~RObject()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC1EP7SEXPREC[Rcpp::Vector<14>::Vector(SEXPREC*)]+0x57): undefined ref erence to `Rcpp::RObject::setSEXP(SEXPREC*)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC1EP7SEXPREC[Rcpp::Vector<14>::Vector(SEXPREC*)]+0x66): undefined ref erence to `Rcpp::RObject::~RObject()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ma trixILi14EEC1ERKiS3_[Rcpp::Matrix<14>::Matrix(int const&, int const&)]+0x2c): un defined reference to `Rcpp::Dimension::Dimension(unsigned int const&, unsigned i nt const&)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZNK4Rcpp6V ectorILi14EE4sizeEv[Rcpp::Vector<14>::size() const]+0x10): undefined reference t o `Rf_length' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6r_ castILi14EEEP7SEXPRECS2_[SEXPREC* Rcpp::r_cast<14>(SEXPREC*)]+0xd): undefined re ference to `TYPEOF' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6r_ castILi14EEEP7SEXPRECS2_[SEXPREC* Rcpp::r_cast<14>(SEXPREC*)]+0x1d): undefined r eference to `SEXPREC* Rcpp::internal::r_true_cast<14>(SEXPREC*)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC2ERKNS_9DimensionE[Rcpp::Vector<14>::Vector(Rcpp::Dimension const&)] +0x46): undefined reference to `Rcpp::Dimension::prod() const' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC2ERKNS_9DimensionE[Rcpp::Vector<14>::Vector(Rcpp::Dimension const&)] +0x56): undefined reference to `Rf_allocVector' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC2ERKNS_9DimensionE[Rcpp::Vector<14>::Vector(Rcpp::Dimension const&)] +0x67): undefined reference to `Rcpp::RObject::setSEXP(SEXPREC*)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC2ERKNS_9DimensionE[Rcpp::Vector<14>::Vector(Rcpp::Dimension const&)] +0x7d): undefined reference to `Rcpp::Dimension::size() const' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC2ERKNS_9DimensionE[Rcpp::Vector<14>::Vector(Rcpp::Dimension const&)] +0xc9): undefined reference to `Rcpp::RObject::attr(std::string const&) const' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6Ve ctorILi14EEC2ERKNS_9DimensionE[Rcpp::Vector<14>::Vector(Rcpp::Dimension const&)] +0x13b): undefined reference to `Rcpp::RObject::~RObject()' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZNK4Rcpp11 Environment6assignINS_6MatrixILi14EEEEEbRKSsRKT_[bool Rcpp::Environment::assign< Rcpp::Matrix<14> >(std::basic_string<char, std::char_traits<char>, std::allocato r<char> > const&, Rcpp::Matrix<14> const&) const]+0x23): undefined reference to `Rcpp::Environment::assign(std::string const&, SEXPREC*) const' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp7RO bject14AttributeProxyaSINS_9DimensionEEERS1_RKT_[Rcpp::RObject::AttributeProxy& Rcpp::RObject::AttributeProxy::operator=<Rcpp::Dimension>(Rcpp::Dimension const& )]+0x1c): undefined reference to `Rcpp::RObject::AttributeProxy::set(SEXPREC*) c onst' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp8in ternal13r_init_vectorILi14EEEvP7SEXPREC[void Rcpp::internal::r_init_vector<14>(S EXPREC*)]+0xd): undefined reference to `double* Rcpp::internal::r_vector_start<1 4, double>(SEXPREC*)' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp8in ternal13r_init_vectorILi14EEEvP7SEXPREC[void Rcpp::internal::r_init_vector<14>(S EXPREC*)]+0x23): undefined reference to `Rf_length' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp8in ternal21wrap_dispatch_unknownINS_9DimensionEEEP7SEXPRECRKT_NS_6traits17integral_ constantIbLb1EEE[SEXPREC* Rcpp::internal::wrap_dispatch_unknown<Rcpp::Dimension> (Rcpp::Dimension const&, Rcpp::traits::integral_constant<bool, true>)]+0xd): und efined reference to `Rcpp::Dimension::operator SEXPREC*() const' C:\Users\ksharma\AppData\Local\Temp\ccgMgFPS.o:RFunctions.cpp:(.text$_ZN4Rcpp6tr aits14r_vector_cacheILi14EE6updateERKNS_6VectorILi14EEE[Rcpp::traits::r_vector_c ache<14>::update(Rcpp::Vector<14> const&)]+0x15): undefined reference to `double * Rcpp::internal::r_vector_start<14, double>(SEXPREC*)' collect2: ld returned 1 exit status 

Any ideas what I am missing?

Answer 1

Jim is right in his earlier answer, but there is more.

When using RInside, you also need to

• enable and associate with Rcpp (which RInside depends on)

• include and bind to R (which both depend on), and also, of course,

• RInside own library

The easiest way to do this is to simply use the Makefile from the examples/standard directory - if you copied the code from one of the examples, you must also copy the assembly instructions.

Finally, and this is your biggest problem: RInside applications currently do not work on Windows, which is clearly described on the RInside page. It will build, but segfault at startup. Debugging help will be appreciated; this works on OS X and Linux.

Answer 2

You are not actually linking to the R library (whatever that is).