[Rprotobuf-yada] linking against R shared library

[Dirk Eddelbuettel]

On 7 November 2009 at 06:31, Dirk Eddelbuettel wrote:
| On 7 November 2009 at 10:51, Romain Francois wrote:
| | Hello,
| | 
| | I'm trying to use the limited connection api using R_outpstream_st that 
| | is defined in Rinternals.h
| | 
| | I have code that looks like this (trimmed of do_serializeToConn) :
| | 
| |      Rconnection con   ;
| |      struct R_outpstream_st out;
| |      R_pstream_format_t type = R_pstream_binary_format ;
| |      SEXP (*hook)(SEXP, SEXP) = NULL ;
| |      con = getConnection(Rf_asInteger(connection));
| |      R_InitConnOutPStream(&out, con, type, 0, hook, R_NilValue );
| | 
| | 
| | The issue I have at the moment is with the call to "getConnection", so I 
| | was trying to do things like this :
| | 
| | #ifndef LibExtern
| | #define LibExtern extern
| | #endif
| | LibExtern Rconnection getConnection(int);
| | 
| | but for this I think we need to link against the R shared lib ? Do you 
| | know how to do this.
| 
| Yes because projects like littler or RInside do it to embed all of R.
| 
| But here we build a loadable module for R -- can it really link to R itself
| when it is loaded into R?  

Saw your r-devel post too. Not sure we can do this if the API "seals it"
away from us.  When did Jeff post about exposing connections?

Dirk

-- 
Three out of two people have difficulties with fractions.