[Rcpp-devel] how to create an Rcpp::List in a standalone C++ application?

[Romain François]

Hi, 

You need to embed R and load Rcpp, otherwise this won’t work. 

You can do this either from scratch. See http://cran.r-project.org/doc/manuals/R-exts.html#Embedding-R-under-Unix_002dalikes
Or you can use RInside. 

Romain

Le 18 déc. 2013 à 12:12, Florian Oswald <florian.oswald at gmail.com> a écrit :

> Hi All,
> 
> I have a C++ class that I build and test without the help of Rcpp. 
> 
> I use Rcpp as an interface, inputting and outputting data from and to the class. I'm stuck at the outputter. Ideally I would like to have this at the end of my program:
> 
> Rcpp::List Results = MyClass.ExportToR();
> 
> where ExportToR is a method that creates an Rcpp::List from members of MyClass. However, I'm unable to use components of Rcpp.h in my code; In particular, I'm unable to make this toy example work:
> 
> #include <iostream>
> #include <cstdlib>
> #include <blitz/array.h>
> #include <Rcpp.h>
> #include <R.h>
> 
> using namespace std;
> 
> int main(int argc, char *argv[])
> {
> 	   Rcpp::IntegerVector d;
> 
> 	   // Rcpp::List L; want to use
> 	   // L to output results to R.
> 
> 	  return EXIT_SUCCESS;
> }
> 
> I compile it with
> 
> llvm-g++-4.2 -arch x86_64 -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -W -I/usr/local/include -I/usr/local/include -I"/Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/include" -L"/Library/Frameworks/R.framework/Versions/3.0/Resources/library/Rcpp/lib/" -L"/Library/Frameworks/R.framework/Versions/3.0/Resources/lib" export.cpp -lRcpp -lR -o  export
> 
> which compiles, but produces a segfault.
> 
> Thanks for any help!
> 
> Florian
> 
> 
> 
> 
> 
> 
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