From ripley at stats.ox.ac.uk  Wed May  4 19:15:19 2005
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Wed May  4 19:15:29 2005
Subject: [Rd] make hanging during compile of r-patched/R-devel on Fedora
	Core 3
In-Reply-To: <4278F136.4010108@ucl.ac.uk>
References: <4278C673.7000101@ucl.ac.uk>
	<1115220570.23994.8.camel@horizons.localdomain>
	<4278F136.4010108@ucl.ac.uk>
Message-ID: <Pine.LNX.4.61.0505041813150.8728@gannet.stats>

On Wed, 4 May 2005, Gavin Simpson wrote:

> I had a quick google search for this problem and found a discussion in the 
> redhat mailing list archives that discusses the issue and points to the 
> following bug:
>
> https://bugzilla.redhat.com/beta/show_bug.cgi?id=138447
>
> Which describes the behaviour I am experiencing.
>
> Basically, the LAPACK in FC3 is broken because it was compiled with gcc-3.4 
> and that introduced errors when -O2 optimisations were used to compile the 
> rpm. That bug was recently reopened so there may be the possibility of the 
> FC3 rpm being updated (the underlying problem has been fixed by compiling 
> with lower optimisation).

Yes, that _is_ described in R-admin, and R is itself careful to compile 
the critical routines with -ffloat-store.


-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
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


[Rd] make hanging during compile of r-patched/R-devel on Fedora Core 3
Prof Brian Ripley