[MacPorts] #39476: arpack's openmpi variant conflicts with gcc45

[MacPorts]

#39476: arpack's openmpi variant conflicts with gcc45
---------------------+---------------------
  Reporter:  mk@…    |      Owner:  mmoll@…
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.1.3
Resolution:          |   Keywords:
      Port:  arpack  |
---------------------+---------------------

Comment (by dstrubbe@…):

 This is interference from another OpenMPI installation:

 {{{
 configure:16364: checking for mpif77
 configure:16380: found /usr/bin/mpif77
 configure:16391: result: mpif77
 configure:16409: checking for MPI_Init
 configure:16416: mpif77 -o conftest -O2 -m64 /usr/lib/libblas.dylib
 /usr/lib/liblapack.dylib conftest.f  >&5
 --------------------------------------------------------------------------
 Unfortunately, this installation of Open MPI was not compiled with
 Fortran 77 support.  As such, the mpif77 compiler is non-functional.

 --------------------------------------------------------------------------
 }}}

 Apparently we have to set MPIF77 explicitly to avoid this. I had thought
 setting F77 would be enough, but apparently not. Attached patch
 accomplishes this.

-- 
Ticket URL: <https://trac.macports.org/ticket/39476#comment:14>
MacPorts <http://www.macports.org/>
Ports system for OS X