Hi Jeff,
I am willing to help test OpenMPI with the NAG compiler from time to time but
not sure how. If you could give me specific instructions I am very happy to
help.
As for this technical issue, I did some research online. It appears that a
later version of Libtool (probably 2.2.10+) added support to NAG Fortran
compiler. There are discussions at
http://lists.gnu.org/archive/html/bug-libtool/2010-09/msg00002.html
The relevant section of code (which I found from Libtool 2.4) looks like:
nagfor*)
# NAG Fortran compiler
_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,'
_LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
;;
The basic idea here is that nagfor calls gcc (not ld directly) for linking so
there are two stages of parameter passing, so the rather strange looking
'-Wl,-Wl,,' flag.
I can see that in OpenMPI 1.5.3 source, the $OPENMPI_DIR/config/libtool.m4 file
does not contain the above code. I have not nuch experience using Libtool so I
don't know how to fix this. Simply adding the new code does not seem to work.
Best regards,
Ning
List-Post: users@lists.open-mpi.org
Date: Thu, 7 Jul 2011 20:32:21 -0400
From: Jeff Squyres<jsquy...@cisco.com>
Subject: Re: [OMPI users] OpenMPI with NAG compiler and gcc 4.6
Sorry for the delay in replying.:-\
I'm afraid we don't test with the NAG compiler.:-(
Would this be something that the NAG would be willing to do for the Open MPI
community? Companies like Absoft do -- we have a light test suite that can be
fully automated (i.e., run via cron). Ping me offline if you would be able to
do this.
I suspect that the version of Libtool we're using doesn't fully understand the
NAG compiler. We get many of the compile-time options by extracting them from
Libtool.
We use Libtool 2.2.6b for OMPI v1.5. Do you know if that version of Libtool
supports the NAG compiler well, or if a more recent version supports it better?
Libtool made some fairly major changes late in the 2.2.x series that we don't
really want to have to adapt to in the v1.5 series if we don't have to (i.e.,
we planned to adapt to them for the v1.7 series). But perhaps we could patch
our Libtool for NAG...?
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