From simon.urbanek at r-project.org  Mon Jun 11 03:43:46 2012
From: simon.urbanek at r-project.org (Simon Urbanek)
Date: Sun, 10 Jun 2012 21:43:46 -0400
Subject: [Rd] Multiple sub-architecture: linking issue
In-Reply-To: <20437.18630.682894.836483@max.nulle.part>
References: <4FD1D38B.5040504@cbio.uct.ac.za>
	<20437.18630.682894.836483@max.nulle.part>
Message-ID: <C7975ECC-8085-4A18-9BC8-A18F093F7416@r-project.org>


On Jun 10, 2012, at 9:24 PM, Dirk Eddelbuettel wrote:

> 
> On 8 June 2012 at 12:27, Renaud Gaujoux wrote:
> | PS: Dirk do you want me to post this on the Rcpp list for record?
> 
> Yes, that generally is where Rcpp questions / comments / hints should go. 
> 
> As for multi-arch builds, I am not sure we even thought about supporting this so if
> it breaks your use of Rcpp and related packages, you get to keep the pieces.
> That said, I'd be interested in supporting it eventually but I guess I want
> to first understand better how/if it is supported (on Linux) by R itself.
> 

R itself of course supports it and essentially all packages (including Rcpp ;)) have to because we require it on Windows and OS X since all binaries there are multi-lib. As far as R is concerned it works equally well on Linux - the problem there is more on the side of distributions, because it is more unusual to have multi-lib Linux (originally it was used on Linux only to get 3rd party [mostly proprietary] 32-bit binaries working on 64-bit systems and that is now less of an issue). As I said in the original post it works reasonably well on Debian (not for all libraries since only a subset is available, but all the basic ones) -- there were shakeups in Ubuntu which were messing with the multilib support, so I don't know the current status but I can check at work tomorrow (probably not for something as ancient as natty, though).

Cheers,
Simon


> 
> -- 
> Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
> 
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[Rd] Multiple sub-architecture: linking issue
Simon Urbanek