[Rcpp-devel] namespace error

[Romain Francois]

Le 04/06/11 14:53, soeren.vogel at uzh.ch a écrit :
> On 02.06.2011, at 22:51, Laurent Gatto wrote:
>
>> On 2 June 2011 20:39,<soeren.vogel at uzh.ch>  wrote:
>>> On 02.06.2011, at 18:50, Dirk Eddelbuettel wrote:
>>>
>>>> On 2 June 2011 at 18:37, soeren.vogel at uzh.ch wrote:
>>>>
>>>> When R CMD CHECKing the package, I repeatedly get the error:
>>>> |
>>>> | Error: .onLoad failed in loadNamespace() for 'GUTS', details:
>>>> |   call: value[[3L]](cond)
>>>> |   error: failed to load module mod_guts from package GUTS
>>>> | Execution halted
>>>> | A namespace must be able to be loaded with just the base namespace
>>>> | loaded: otherwise if the namespace gets loaded by a saved object, the
>>>> | session will be unable to start.
>>
>> You have good chances to get rid of it using the latest svn version of Rccp:
>
> Thanks for the advice. Unfortunately, it doesn't work. I've downloaded and installed the latest version, made an Rcpp.package.skeleton("Foo", module=TRUE), and run R CMD CHECK Foo, resulting on a slightly different but still persistent warning:
>
> ** checking whether the name space can be loaded with stated dependencies ... WARNING
> Error: .onLoad failed in loadNamespace() for 'Foo', details:
>    call: value[[3L]](cond)
>    error: failed to load module yada from package Foo
> could not find function "getClass"
> Execution halted
> A namespace must be able to be loaded with just the base namespace
> loaded: otherwise if the namespace gets loaded by a saved object, the
> session will be unable to start.
> Probably some imports need to be declared in the NAMESPACE file.
>
> However, the package works and I think a solution is not urgent.
>
> *S*

Do you get this warning if you add this line in the NAMESPACE file of 
the generated package:

import(methods)

Romain

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Romain Francois
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