[Pkg-openmpi-maintainers] Bug#752785: Fwd: Bug#752785: openmpi: Please add mpi.pc

[Alastair McKinstry]

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Thanks to Jeff Squyres for the note below.
I've tested and mpi.pc -> ompi.pc is not sufficient for Fortran, just C.

There seem to be two approaches:
(1) foo-f90.pc etc. versions of the pc packages.
(2) adding fflags, fcflags, etc. to the pc packages.

(2) seems to be used in most packages that support fortran; adding
variables that match
the GNU configure, etc. conventions: ie. FFLAGS, FCFLAGS, CXXFLAGS, etc.
Approach (1) has the semantic problem of using 'pkg-config --cflags
ompi-f90" to get Fortran, not C, flags.
There is the minor bug that `pkg-config --variables=fflags --libs mpi`
doesn't work as an alternative,
for which I've submitted a report against pkg-config.

So I will create a patch to enhance ompi.pc by adding fflags, etc. support.
For libs, this has the problem of requiring "-lmpi_f90" on the libs line
even if F90 is not being
used (for example), but adding "-Wl,--as-needed" _should_ clear this.
(Work testing this is required).

regards
Alastair



- -------- Original Message --------
Subject:     Bug#752785: openmpi: Please add mpi.pc
Date:     Thu, 26 Jun 2014 16:08:19 +0000
From:     Jeff Squyres (jsquyres) <jsquyres at cisco.com>
To:     mckinstry at debian.org <mckinstry at debian.org>



Google alerts found this bug for me...

Don't forget about "mpifort", which is the replacement for
now-deprecated mpif77 and mpif90.

I don't remember offhand whether MPICH supports mpifort or not, but Open
MPI has deprecated mpif77 and mpif90 in favor of the name "mpifort".

- -- 
Jeff Squyres
jsquyres at cisco.com
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/



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