On 7 Sep 2004, Peter Dalgaard wrote:
> "M. Edward Borasky" <[EMAIL PROTECTED]> writes:
>
> > I just got R-2.0.0 alpha running on my Gentoo Linux system. The only
> > issue I had was that if I do "--with-lapack" in the "configure", "make
> > check" fails very early.
It would have been helpful to say where, exactly.
> Once I removed that option, "make check-all"
> > passed. I have both "blas-atlas" and "lapack-atlas" installed on my
> > system. The Atlas version is 3.6.0.
>
> Hmm, but would the linker know where to find them? Also, there could
> be an issue with dynamic vs. static libraries. Any configure experts
> around?
(Well, I wrote that part of configure, amongst others.) R-admin does warn
against using --with-lapack:
Provision is made for using an external LAPACK library, principally to
cope with BLAS libraries which contain a copy of LAPACK ...
Note that lapack-atlas is probably not a complete lapack, and if it is, it
may not be bug-fixed ...
If you do use @option{--with-lapack}, be aware of potential problems
with bugs in the LAPACK 3.0 sources (or in the posted corrections to
those sources).
So all I can conclude from this is that Gentoo's libraries are not
sufficient.
When I do this, I have to be very careful how I build LAPACK, using
-fforce-store where R does. It then works but I see negligible
performance boost (Goto's BLAS is better than ATLAS, anyway).
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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