[Rd] rscproxy version conflict

[Simon Urbanek]

On Dec 22, 2008, at 15:30 , Erich Neuwirth wrote:

> We found out about this problem only a few days ago.
> The reason is that the official binary packages were compiled with
> 2.8.1, but the distributed Windows binary of R was still 2.8.0.
> rscproxy needs to be compiled for the correct version of R.
> Now with R 2.8.1 being release officially the problem should  
> disappear,
> but we (which is mostly Thomas Baier, the mastermind behind rcom and
> R(D)COM server) will try to find a way to avoid this problem with the
> next R update.
>
> Before R 2.8.0, rproxy.dll distributed with R itself was
> supplying the underlying mechanism for the rcom package and R(D)COM
> server. rproxy.dll was removed from R itself, and rscproxy is the
> current substitute. rproxy.dll, being part of R itself, always matched
> the R version to the very last digit. With rscproxy, it is more
> difficult to stay in sync.
>
>

FWIW: technically, you don't have to match the patch level version.  
Although default DLL checks usually require perfect match, it should  
be safe to require that R version lies in [x.y.z, x.y+1.0)  where  
x.y.z is the R version that the interfacing DLL was compiled against.  
(And hence it is safe to use R x.y.0 as the base for compilation until  
R x.y+1.0 is released).

Cheers,
Simon


>
>
> meerman wrote:
>> After installing the package 'rscproxy' downloaded from the CRAN  
>> server, I
>> get the following error message from R 2.8.0 about a version  
>> conflict :
>>
>>
>>
>>
>>
>> package 'rscproxy' successfully unpacked and MD5 sums checked
>>
>>
>>
>> The downloaded packages are in
>>
>>         C:\Documents and Settings\John Meerman\Local
>>
>> Settings\Temp\RtmpbK9mxN\downloaded_packages
>>
>> updating HTML package descriptions
>>
>>> local({pkg <- select.list(sort(.packages(all.available = TRUE)))
>>
>> + if(nchar(pkg)) library(pkg, character.only=TRUE)})
>>
>> *Warning message:
>>
>> package 'rscproxy' was built under R version 2.8.1 *>
>>
>>
>>
>> This prevents me e.g. to use the R (D)COM 3.0 server.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> John Meerman
>>
>>
>>
>>
>> 	[[alternative HTML version deleted]]
>>
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>
> -- 
> Erich Neuwirth, University of Vienna
> Faculty of Computer Science
> Computer Supported Didactics Working Group
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