[Rcpp-devel] How to create a new plugin?

[Dominick Samperi]

On Fri, Dec 17, 2010 at 12:37 PM, Romain Francois
<romain at r-enthusiasts.com>wrote:

> Le 17/12/10 01:28, Dominick Samperi a écrit :
>
>  Hello,
>>
>> I managed to create a new plugin by copy/paste/adapt
>> Rcpp.plugin.maker. Is there a better way?
>>
>> Thanks,
>> Dominick
>>
>
> Rcpp.plugin.maker is a sort of undocumented function we use for packages we
> write, just to avoid copy and paste.
>
> See how packages RcppArmadillo and RcppGSL use it.
>

Thanks Romain, that was a good tip. Now my adaptation has been reduced
to the following:

inlineCxxPlugin <- Rcpp:::Rcpp.plugin.maker(
         include.before = "#include <cxxPack.hpp>",
         libs = cxxPack:::LdFlags(),
         package = "cxxPack"
)

The only loose end is that sometimes I get a warning like this after
the unit testing completes for the first time (no warning if the unit
test is run again):

Warning messages:
1: In file(con, "r") :
  file("") only supports open = "w+" and open = "w+b": using the former
2: In file(con, "r") :
  file("") only supports open = "w+" and open = "w+b": using the former

I suspect this has something to do with how the Makefiles are opened.

BTW, it might be safer to leave it up to the test C++ code (assigned to
src) to optionally use 'using namespace whatever' instead of doing this
automatically, for the reasons Doug mentioned earlier.

Thanks,
Dominick


>
> Whether there is something better than what you have done is hard to tell
> since you are very sparse on details adn you did not show what ypu mean by
> copy/paste/adapt.
>
> Romain
>
> --
> Romain Francois
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>
>
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