Bug#849764: libdeal.ii-dev: fatal error: mpi.h: No such file or directory

[Matthias Maier]

All,

the problem is the following.

Back when deal.II was built [1] the location of the MPI headers was at

  MPI_INCLUDE_DIRS: /usr/lib/openmpi/include/openmpi;[...];/usr/lib/openmpi/include

this was found during configure time and recorded in the
deal.IIConfig.cmake file that gets installed to

  /usr/share/cmake/deal.II/deal.IIConfig.cmake

Now, this location changed on disc [2] for the newest openmpi version in
stretch - it is now:

  MPI_INCLUDE_DIRS = /usr/lib/x86_64-linux-gnu/openmpi/include/openmpi;[...];/usr/lib/x86_64-linux-gnu/openmpi/include

(As correctly picked up by configuring the source package.)

We have to recompile deal.II yet another time to reflect these changes in
the configuration. :-/

Best,
Matthias



[1] https://buildd.debian.org/status/fetch.php?pkg=deal.ii&arch=amd64&ver=8.4.2-2&stamp=1481120232&raw=0

[2]
openmpi (2.0.2~git.20161225-8) unstable; urgency=medium

  * Multiarch support. Closes: #833728, #842881.

 -- Alastair McKinstry <mckinstry at debian.org>  Sat, 17 Dec 2016 14:17:24 +0000