[Pkg-openmpi-maintainers] Bug#459070: Bug#459070: Bug#459070: /usr/include/openmpi is missing (mpi.h isn't in /usr/include/**)

[Dirk Eddelbuettel]

On 4 January 2008 at 15:08, Manuel Prinz wrote:
| Hi all!
| 
| Am Freitag, den 04.01.2008, 13:52 +0100 schrieb Ondrej Certik:
| > On Jan 4, 2008 1:40 PM, Dirk Eddelbuettel <edd at debian.org> wrote:
| > > Ondrej Certik wrote:
| > > | In the last bug I reported:
| > > |
| > > | http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=457088
| > > |
| > > | I was told, that the mpi.h is in /usr/include/openmpi
| 
| No, you were told that it is in /usr/include/mpi. That's where mpi.h
| lives, in all Debian MPI packages out there. (Except MPICH, but that's a
| different story.)
| 
| > > | However, in the clean environment, the libopenmpi-dev package fails to put mpi.h into
| > > | /usr/include/openmpi.
| 
| It does so because that's not the place where mpi.h can be found, see
| above.
| 
| > > | How about just using plain "ln -s"? Like this:
| > > | ln -s /usr/lib/openmpi/include/ /usr/include/openmpi
| 
| This would break every other MPI implementation in Debian and therefore
| is not an option at all. That's what update-alternatives is for.
| 
| > > Someone really needs to fix update-alternatives.
| > 
| > Right. We should try to fix the real bug (update-alternatives).
| 
| The bug has a patch and is pending. It should be fixed within the next
| dpkg uploads. I experienced very harsh words while working on this
| issue. It wasn't fun but it's resolved. However, in this case,
| update-alternatives is not to blame. You're looking for mpi.h at the
| wrong place.
| 
| > Do you have some idea, where the problem is?
| 
| See above. Using /usr/include/mpi should be totally fine. It also allows
| LAM users (or others) to port your package in case they need it. In
| other words: Don't make OpenMPI a requirement if you don't have to.

In fact this is critically important because Open MPI exists only a handful
architectures.  I maintain packages that have Build-Depends on Open MPI where
available and on LAM where not.
 
| If this does not solve your problem, I'll be glad to help you with your
| package.

Seconded. Ondrej, feel free to study other packages setup for builds under
the MPI packages. 

Dirk

-- 
Three out of two people have difficulties with fractions.