[Rcpp-devel] finding an undefined symbol
Figured it out. The definition for data3 is in a namespace, so it could not find the member functions. -Andrew
On Thu, Nov 4, 2010 at 2:26 PM, Andrew Redd <amredd at gmail.com> wrote:
Thanks for the post. ?The data3 class is defined with
---
#include <Rcpp.h>
#include "types.h" //defines ivec, tvec, idxvec, as vectors and
numeric as double
class data3{
public:
data3();
void initPat(tvec, tvec);
void initAug(ivec, ivec, tvec);
void initSwabs(idxvec, ivec, tvec);
void setParameters(numeric, numeric, numeric);
numeric augmentedLogLikelihood();
numeric dataLogLikelihood();
};
RCPP_MODULE(GPU_BAYES){
using namespace Rcpp;
class_<data3>("data3")
.method("initPat",&data3::initPat)
.method("initAug",&data3::initAug)
.method("initSwabs",&data3::initSwabs)
.method("setParameters", &data3::setParameters);
}
---
There is no initSwabs with only one parameter, is that what this is looking for?
-Andrew
On Thu, Nov 4, 2010 at 8:44 AM, Douglas Bates <bates at stat.wisc.edu> wrote:
On Wed, Nov 3, 2010 at 2:22 PM, Andrew Redd <amredd at gmail.com> wrote:
I'm writing a rather complicated package using CUDA and Rcpp. ?I have everything compile and link ok, but when loading I get a
"unable to load shared object ..." "... undefined symbol: ?_ZN5data39initSwabsESt6vector..."
Does anyone have any advice how to fix this and/or figure out what exactly the problem is?
First you need to demangle the name. ?On Linux systems there is a utility called c++filt which, for this symbol shows $ echo _ZN5data39initSwabsESt6vector | c++filt data3::initSwabs(std::vector) The most likely cause of the problem is that you have the CUDA package headers in the -I list when you compile but not the library in the -L list when linking.