Jeff is right-- if you've already confirmed ompi, just use the ompi specific arguments to get the MPI LDFLAGS out. I withdraw the comment about adding a feature to ompi_info.
It is unfortunate, but true, that the mpi compiler wrappers give no hint of the existence of -show, --showme:link, etc before passing on the --help argument to the underlying compilers. Granted on a proper installation, 'man mpif90' will tell you about the -show switches, but there's an awful lot of private installations of mpi where $mpiprefix/man doesn't end up in the manpath and $mpiprefix/bin doesn't end up in the regular PATH. Ben
