[Rcpp-devel] Warning: Class "C++Object" is defined (with package slot ‘Rcpp’) but n o metadata object found

[Alejandra Gonzalez-Beltran]

Dear Dirk,

Thanks for your reply.

Given that our package does not use Rcpp directly and after reading
documentation/forums without finding a solution, it had seem to me that it
was a generic warning and that there was no need to provide a pointer to
the public repository with our code.

After sending my message, I resolved the warning by adding Rcpp in the
'Depends' section of the DESCRIPTION file.

Kind regards,

Alejandra

On 24 July 2012 14:48, Dirk Eddelbuettel <edd at debian.org> wrote:

>
> Hi Alejandra.
>
> On 24 July 2012 at 14:11, Alejandra Gonzalez-Beltran wrote:
> | Hi,
> |
> | When running R CMD INSTALL over our R package, I get the following
> warning:
> |
> | Warning: Class "C++Object" is defined (with package slot ‘Rcpp’) but no
> | metadata object found to revise subclass information---not exported?
>  Making a
> | copy in package ‘.GlobalEnv’
> |
> | (full output below)
> |
> | I am not importing Rcpp directly.
> |
> | Could you please provide any pointers on how to fix this warning?
>
> No. And you need to understand why: without a reproducible example there is
> NOTHING we can do here but point you to
>
>    the Rcpp-package vignette
>
>    the Rcpp.package.skeleton() function and its help
>
>    the sources of 73 existing CRAN packages using Rcpp
>
> to see how working packages are laid out.
>
> Regards,  Dirk
>
> | The output of sessionInfo() is included below.
> |
> | Thanks,
> |
> | Alejandra
> |
> |
> | oerc-dynamic-226:R-packages agbeltran$ R CMD INSTALL ISA2R
> | * installing to library ‘/Library/Frameworks/R.framework/Versions/2.15/
> | Resources/library’
> | * installing *source* package ‘ISA2R’ ...
> | ** R
> | ** inst
> | ** preparing package for lazy loading
> | Warning: Class "C++Object" is defined (with package slot ‘Rcpp’) but no
> | metadata object found to revise subclass information---not exported?
>  Making a
> | copy in package ‘.GlobalEnv’
> | ** help
> | *** installing help indices
> | ** building package indices
> | ** installing vignettes
> | ** testing if installed package can be loaded
> | *** arch - i386
> | During startup - Warning message:
> | Class "C++Object" is defined (with package slot ‘Rcpp’) but no metadata
> | object found to revise subclass information---not exported?  Making a
> copy in
> | package ‘.GlobalEnv’
> | *** arch - x86_64
> | During startup - Warning message:
> | Class "C++Object" is defined (with package slot ‘Rcpp’) but no metadata
> | object found to revise subclass information---not exported?  Making a
> copy in
> | package ‘.GlobalEnv’
> |
> | * DONE (ISA2R)
> |
> |
> | > sessionInfo()
> | R version 2.15.1 (2012-06-22)
> | Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
> |
> | locale:
> | [1] C/en_US.UTF-8/C/C/C/C
> |
> | attached base packages:
> | [1] stats     graphics  grDevices utils     datasets  methods   base
> |
> |
> | other attached packages:
> | [1] ISA2R_1.0.7        Biobase_2.17.6     BiocGenerics_0.3.0
> |
> | loaded via a namespace (and not attached):
> | [1] Rcpp_0.9.13     codetools_0.2-8 mzR_1.3.8       tools_2.15.1
> |  xcms_1.33.13
> |
> | ----------------------------------------------------------------------
> | _______________________________________________
> | Rcpp-devel mailing list
> | Rcpp-devel at lists.r-forge.r-project.org
> | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> --
> Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
>
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