[Debian-med-packaging] SSE3 issue with iqtree when trying to enable i386 (Was: Help with new version of iqtree needed)

[Andreas Tille]

Dear Tung,

On Fri, Mar 11, 2016 at 08:43:03AM +0000, Tung Nguyen wrote:
> Then we will provide a compiler flag to remove the SSE requirement. We also
> have non-sse code for the same functions, so this should be easy.

Sounds good.  Am I understand you correctly that this is possible even
right now?  If so, what exact flags do I need to use?

Kind regards

      Andreas.
 
> On Thu, Mar 10, 2016, 22:02 Andreas Tille <tille at debian.org> wrote:
> 
> > Hi,
> >
> > On Thu, Mar 10, 2016 at 09:56:53PM +0100, Gert Wollny wrote:
> > > Hi all,
> > >
> > > On Thu, 2016-03-10 at 19:20 +0000, Tung Nguyen wrote:
> > > > Maybe we will provide a flag to disable the SSE instructions
> > > > completely for use on i386. However, if the patch from Gert works
> > > > well then it would be the best solution.
> > >
> > > The patch only provides an SSE2 code path for that one SSE3 instruction
> > > that was forced in the code, so it does not really help to get the code
> > > compile for the the lowest spec i386 hardware supported by Debian.
> > >
> > > Providing a code path without any SSE could also be interesting if you
> > > think of getting the code ported to other architectures (ARM, PowerPC,
> > > ...).
> >
> > If you could really come up without any requirement for SSE this would
> > be great since the goal of Debian is to support all those architectures
> > if possible.
> >
> > If you could confirm this attempt I might go for an amd64 package
> > exclusively for the moment and wide the number of architectures later
> > in a clean way.
> >
> > Kind regards
> >
> >        Andreas.
> >
> > --
> > http://fam-tille.de
> >

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