[Rcpp-devel] How to link a .lib file in a rcpp-package in a Windows environment?

[Bernhard Pollner]

Hello Dirk,


Am 25.04.2011 um 04:54 schrieb Dirk Eddelbuettel:

> 
> You need to include headers for R too, e.g. 
> 
>  #include <R.h>
>  #include <Rdefines.h>
> 
> and maybe 
> 
>  #include <Rinternals.h>

I did that, so, the "final" C document looks like:


> | > #include "plastic.h"   // adapt to what Plastic needs
>  #include <R.h>
>  #include <Rdefines.h>
>  #include <Rinternals.h>
>  > SEXP simpleText(void) {		      // no arguments
> | > 
> | >   Rprintf("hello world--before call\n");
> | > 
> | >   int x = aCallFromPlasticLibrary();  
> | > 
> | >   Rprintf("hello world--after call\n");
> | > 
> | >   return R_NilValue
> | > }



With that it works, Rcmd check runs through nicely, I can install the package. I do not know how to load and run "simpleText()", though, but that probably does not matter. So I assume that, without using Rcpp and having only
	PKG_CPPFLAGS=-I.
	PKG_LIBS=PsyREG.lib
in the Makevars.win, things are ok.



> | In the latter case, now what would be the line I would have to add to Makevars.win, or how do I have to modify the PKG_LIBS Line in order to incorporate "Plastic.lib"?
> 
> You probably want to look at a few packages using external libraries; there
> are a few that use the GSL.  One of them is mvabund which also uses Rcpp. It
> has 
> 
> ## This assumes that the LIB_GSL variable points to working GSL libraries
> ## It also assume that we can call Rscript to ask Rcpp about its locations
> PKG_CPPFLAGS=-std=c++0x -I$(LIB_GSL)/include
> PKG_LIBS=-L$(LIB_GSL)/lib -lgsl -lgslcblas $(shell $(R_HOME)/bin/Rscript.exe -e "Rcpp:::LdFlags()")
> 

Ok, I am working on that now, try to understand what it means and modify the lines to my own needs.
I´let you know how things are going here soon...


Meanwhile thanks a lot,
Bernhard



> but understand that the environment variable use here is 'just for CRAN' and
> you do not have to worry about it.
> 
> You do need to understand what these two lines do though, which is why I
> recommended that you start with something simple.
> 
> Hope this helps,  Dirk
> 
> |