R devel - Aug 2011 - build 32-bit R on x86_64?

Dear R-Devel,

I'm using Ubuntu on an x86_64 machine and would like to have both the
32-bit and 64-bit versions of R built from source.  By default,
following the usual build procedures yields 64 bit R.  Looking at
[these](http://cran.r-project.org/doc/manuals/R-admin.html#Sub_002darchitectures),
I thought I could build 32-bit R by executing

r_arch=32 ./configure

and building R like usual (make).  However, after seeing this error message,

/usr/bin/install: cannot create regular file
`../../include/32/Rconfig.h': No such file or directory

I realize I am misunderstanding the instructions.  Could someone
please clarify how I could go about compiling both 32-bit and 64-bit
versions of R on my Linux machine?  Thank you!

-- Vinh

The architecture is called i386. Try

r_arch=i386 ./configure

That should work.
Cheers
Joris

On Wed, Aug 10, 2011 at 1:40 AM, Vinh Nguyen <vqnguyen at uci.edu>
wrote:
> Dear R-Devel,
>
> I'm using Ubuntu on an x86_64 machine and would like to have both the
> 32-bit and 64-bit versions of R built from source. ?By default,
> following the usual build procedures yields 64 bit R. ?Looking at
>
[these](http://cran.r-project.org/doc/manuals/R-admin.html#Sub_002darchitectures),
> I thought I could build 32-bit R by executing
>
> r_arch=32 ./configure
>
> and building R like usual (make). ?However, after seeing this error
message,
>
> /usr/bin/install: cannot create regular file
> `../../include/32/Rconfig.h': No such file or directory
>
> I realize I am misunderstanding the instructions. ?Could someone
> please clarify how I could go about compiling both 32-bit and 64-bit
> versions of R on my Linux machine? ?Thank you!
>
> -- Vinh
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>


-- 
Joris Meys
Statistical consultant

Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control

tel : +32 9 264 59 87
Joris.Meys at Ugent.be
-------------------------------
Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php

Hi Vinh,

On 9 August 2011 at 16:40, Vinh Nguyen wrote:
| Dear R-Devel,
| 
| I'm using Ubuntu on an x86_64 machine and would like to have both the
| 32-bit and 64-bit versions of R built from source.  By default,
| following the usual build procedures yields 64 bit R.  Looking at
|
[these](http://cran.r-project.org/doc/manuals/R-admin.html#Sub_002darchitectures),
| I thought I could build 32-bit R by executing
| 
| r_arch=32 ./configure
| 
| and building R like usual (make).  However, after seeing this error message,
| 
| /usr/bin/install: cannot create regular file
| `../../include/32/Rconfig.h': No such file or directory
| 
| I realize I am misunderstanding the instructions.  Could someone
| please clarify how I could go about compiling both 32-bit and 64-bit
| versions of R on my Linux machine?  Thank you!

I do not think that multiarch build (ie 32 and 64 at the same time) are fully
supported yet on Ubuntu or Debian. It is coming, but just like a number of
other things, not exactly overnight. It is a release goal.

In the meantime, you can always use virtualization. I have a Debian 32-bit
system and an Ubuntu 32-bit system in KVM virtualization on my Ubuntu 64-bit
server.  That works well.  Kvm, or Xen, or Virtualbox, or Vmware, ... all
offer fairly decent virtualization.  

Debian/Ubuntu specific questions are even more welcome on r-sig-debian.

Dirk

-- 
Two new Rcpp classes scheduled for New York and San Francisco, details at
http://dirk.eddelbuettel.com/blog/2011/08/04#rcpp_classes_2011-09_and_2011-10