Building hdf5-1.10.5 with MPI on Linux.
/usr/lib/x86_64-linux-gnu/libhdf5_mpich.so.10 -> libhdf5_mpich.so.10.1.0 is created but the link from libhdf5_mpich.so is not. So h5cc and ld respond:
> undefined reference toH5Pset_fapl_mpio’> /usr/bin/ld: cannot find -lhdf5_mpichand> attempt to open /usr/lib/x86_64-linux-gnu/libhdf5_mpich.so failed`