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Subject: Re: [OMPI users] Pb in configure script when using ifort with "-fast" + link of opal_wrapper
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-06-03 12:04:52


Rainer and I are still iterating on the trunk solution (we moved to an
hg branch just for convenience for the moment).

Note that the Fortran flags aren't too important to OMPI. We *only*
use them in configure. OMPI doesn't contain any Fortran 77 code at
all, and the F90 module is extremely minimalistic (generally one-line
subroutines to call the C counterpart). So a workaround for the
moment -- until we can figure out the problem -- might be to remove
the -fast from the FFLAGS and FCFLAGS.

On Jun 3, 2009, at 11:34 AM, Rainer Keller wrote:

> Dear Michel,
> per the naming convention test in configure:
> ifort -fast
> will turn on -xHOST -O3 -ipo -no-prec-div -static,
> of which -ipo turns on interprocedural optimizations for multiple
> files.
> Here the compiled object file does not contain the symbols searched
> for in the
> configure-tests.
>
> Looking into the simple test-case in configure and the options that
> one has to
> figure out the naming convention using compilation (-c), I don't see
> an other
> other than disabling -fast & -ipo for intel-fortan compilers.
>
> Please check trunk in commit r21363.
>
>
> On Wednesday 03 June 2009 09:29:09 am DEVEL Michel wrote:
> > In fact I forgot to put back to '-fast -C' the FCFLAGS variable
> (from
> > '-O3 -C'). There is still an error (many opal_*_* subroutines not
> found
> > during the ipo step) at the same place, coming from the fact that
> > "ld: attempted static link of dynamic object
> > `../../../opal/.libs/libopen-pal.so'
> > although I put --enable-static in the configure step...
>
> > Any idea of how to make the static libraries ?
>
> In order to statically link at least the intel-libraries, please add
> -static-intel (in previous intel compilers called -i-static)
> to LDFLAGS
>
> With best regards,
> Rainer
> --
> ------------------------------------------------------------------------
> Rainer Keller, PhD Tel: +1 (865) 241-6293
> Oak Ridge National Lab Fax: +1 (865) 241-4811
> PO Box 2008 MS 6164 Email: keller_at_[hidden]
> Oak Ridge, TN 37831-2008 AIM/Skype: rusraink
>
>
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-- 
Jeff Squyres
Cisco Systems