[Rcpp-devel] Rstudio package build and Rcpp::compileAttributes()

Hello all,



I'm using Rstudio 0.97.306, R 2.15-2, and Rcpp 0.10.2 with Windows 7 
Professional x64. I recently switched to using the build tool in 
Rstudio, however, my generated file RcppExports.cpp and RcppExports.R 
are checked into version control, so they are read-only. The build 
fails with



***************

==> Rcpp::compileAttributes()



Error in eval(expr, envir, enclos) :

  file io error:

Calls: source ... withVisible -> eval -> eval -> <Anonymous> -> .Call

Execution halted

***************



I have them checked in as I need to modify RcppExports.cpp manually, 
after running compileAttributes(), to avoid compiling in Visual Studio

(see below for explanation, if you are interested):



#ifndef _MSC_VER



#include <Rcpp.h>



using namespace Rcpp;



...



#endif



I tried removing the generated key at the top of RcppExports.cpp since

this is mentioned in the Rcpp Attributes Vignette. However, I still 
have the error. Perhaps I've misinterpreted section 3.5.2 "Generated

In order to avoid generating traffic on the list let me comment on why

I'm wrapping RcppExports.cpp with _MSC_VER. My employer produces all 
applications and libraries in Visual Studio. I wrap my ANSI C++ 
classes with .NET managed C++ classes and build a .NET assembly. This 
allows me to use Rcpp to test my C++ implementations of models against

a clean implementation in R and fulfill company requirements that I 
use Visual Studio unit tests for quality assurance. I can then deliver

the assembly build to developers for use in their own projects.



I may turn the previous paragraph into a presentation for the Atlanta 
R User's Group.



Dale Smith, Ph.D.

Senior Financial Quantitative Analyst

Risk & Compliance

Fiserv

Office: 678-375-5315

www.fiserv.com