[Rcpp-devel] Avoiding having to write .h files

Søren Højsgaard sorenh at math.aau.dk
Tue Feb 25 12:45:25 CET 2014

Only because it is extra work... Anyway, I hope this Rcpp::interfaces(r,cpp)-feature gets up and running again :)


-----Original Message-----
From: Romain François [mailto:romain at r-enthusiasts.com] 
Sent: 25. februar 2014 12:39
To: Søren Højsgaard
Cc: rcpp-devel at lists.r-forge.r-project.org (rcpp-devel at r-forge.wu-wien.ac.at)
Subject: Re: [Rcpp-devel] Avoiding having to write .h files


Why do you want to avoid writing headers. I guess you could use extern 

For example, in foo1.cpp : 

double fun1(){
  return 2.0 ;

In foo2.cpp ;

extern double fun1() ;

double fun2(){
  return fun1() + 2; 


Le 25 févr. 2014 à 12:28, Søren Højsgaard <sorenh at math.aau.dk> a écrit :

> Dear all,
> If in a package I have foo1.cpp with function fun1 and foo2.cpp with fun2 (which uses fun1 from foo1.cpp) then I must write foo1.h and include in foo2.cpp. Right? Is there another approach so that I do not have to write these header files?
> Using Rcpp::interfaces(r,cpp) should take care of that (according to the Rcpp-attributes vignette, at least that is my understanding) but I have seen on the list that there is a bug in this feature with the current Rcpp version (and also with the devel version on github).
> Cheers 
> Søren

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