emerge sys-cluster/openmpi-2.0.2[fortran] lacks at least to install /usr/include/mpif.h I cannot build sci-libs/hdf5 with it. I know Fortran is short for formula translator, it's old and there are 2 or 3 main releases, that's it. Well except for a more very very special file - I don't remember the name, but it was much longer than just mpi.fh or mpif.h i couldn't find any fortran includes, that hdf5 complaint about while doing configure, so I installed sys-cluster/mpich2 as ALTERNATIVE to get virtual/mpi and built hdf5 with that, which worked an gave me /usr/include/mpif.h among others. Sorry, I can not give you more Information, as I would have to break my system to make more investigation. Reproducible: Didn't try Steps to Reproduce: 1.emerge sys-cluster/openmpi-2.0.2[fortran] 2. 3. Actual Results: crucial fortran headers for mpi missing, I have not checked the libs. Expected Results: basic fortan mpi support
4.0.5-r1 installs it properly