[MacPorts] #55153: armadillo @8.200.1 +arpack: 'mpi.h' file not found

[MacPorts]

#55153: armadillo @8.200.1 +arpack: 'mpi.h' file not found
----------------------------+-----------------------
 Reporter:  majoc-at-astro  |      Owner:
     Type:  defect          |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.4.2
 Keywords:                  |       Port:  armadillo
----------------------------+-----------------------
 Log from last Friday's build run to be attached.  Here's the top bit:
 {{{
 :info:build In file included from
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_armadillo/armadillo/work/armadillo-8.200.1/src/wrapper.cpp:51:
 :info:build In file included from /opt/local/include/hdf5.h:22:
 :info:build /opt/local/include/H5public.h:59:13: fatal error: 'mpi.h' file
 not found
 :info:build #   include <mpi.h>
 :info:build             ^~~~~~~
 :info:build 1 error generated.
 }}}
 This is on macOS 10.12 with Xcode 9.0, with arpack
 @3.4.0_2+accelerate+gcc6 having already been successfully built; it occurs
 also on 10.11 with Xcode 8.3.3, and first started in early September.
 Annoyingly, it only seems to happen in production builds, and it
 consistently fails to fail when attempted on a build which is otherwise
 empty.

 Please let me know if there's any more information you need, or what other
 tests to make.  Please see also https://trac.macports.org/ticket/55080,
 which started failing the same way at the same time, but which does fail
 on an empty build.

--
Ticket URL: <https://trac.macports.org/ticket/55153>
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