[Rcpp-devel] Help with Rcpp

[Dirk Eddelbuettel]

On 12 May 2014 at 14:03, Talita Perciano wrote:
| Hi,
| 
| I'm using Rcpp with my package and I'm having some issues with version 0.11.0.
| I followed all the instructions in the manual and I don't know what is
| happening. The NAMESPACE file of my package is:
| 
| useDynLib(x)
| exportPattern("^[[:alpha:]]+")
| importFrom(Rcpp, evalCpp)
| 
| In the DESCRIPTION file I have the following specific lines for Rcpp:
| 
| Imports: Rcpp (>= 0.11.0)
| LinkingTo: Rcpp
| 
| I can run R CMD check --as-cran and R CMD INSTALL with no problems. The issue
| comes when I try to use the package in R. I can load it but it seems that some
| symbols are missing in the shared library of the package. I checked the shared
| library and I got the following issues:
| 
| lan.o: In function `Rcpp::Rstreambuf<false>::sync()':
| ../R/Rcpp/include/Rcpp/iostream/Rstreambuf.h:83: undefined reference to
| `R_FlushConsole'
| lan.o: In function `Rcpp::Rstreambuf<true>::sync()':
| ../R/Rcpp/include/Rcpp/iostream/Rstreambuf.h:79: undefined reference to
| `R_FlushConsole'
| lan.o: In function `Rcpp::Rstreambuf<false>::overflow(int)':
| ../R/Rcpp/include/Rcpp/iostream/Rstreambuf.h:74: undefined reference to
| `REprintf'
| lan.o: In function `Rcpp::Rstreambuf<false>::xsputn(char const*, long)':
| ../R/Rcpp/include/Rcpp/iostream/Rstreambuf.h:65: undefined reference to
| `REprintf'
| lan.o: In function `Rcpp::Rstreambuf<true>::overflow(int)':
| ../R/Rcpp/include/Rcpp/iostream/Rstreambuf.h:70: undefined reference to
| `Rprintf'
| lan.o: In function `Rcpp::Rstreambuf<true>::xsputn(char const*, long)':
| ../R/Rcpp/include/Rcpp/iostream/Rstreambuf.h:61: undefined reference to
| `Rprintf'

Can you show the lines (from the shell prompt) that get executed when you do

    R CMD INSTALL nameOfYourPackage_1.2.3.tar.gz

It looks like you are either not linling to R, or possibly on a system where
R is built as a _static_ binary (which is mighty uncommon). 

These symbols should come from libR.so which is usually part of the default
build triggered by R CMD INSTALL ....

Dirk

| 
| > R.version
|                _                           
| platform       x86_64-unknown-linux-gnu    
| arch           x86_64                      
| os             linux-gnu                   
| system         x86_64, linux-gnu           
| status                                     
| major          3                           
| minor          1.0                         
| year           2014                        
| month          04                          
| day            10                          
| svn rev        65387                       
| language       R                           
| version.string R version 3.1.0 (2014-04-10)
| nickname       Spring Dance    
| 
| 
| I would appreciate if someone could help me with that.
| 
| Thank you,
| Talita
| 
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-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com