*** Fortran compiler
checking for x86_64-pc-linux-gnu-gfortran... x86_64-pc-linux-gnu-gfortran
checking whether we are using the GNU Fortran compiler... no
checking whether x86_64-pc-linux-gnu-gfortran accepts -g... no
configure: WARNING: Open MPI now ignores the F77 and FFLAGS environment variables; only the FC and FCFLAGS environment variables are used.
checking whether ln -s works... yes
checking if Fortran compiler works... no
**********************************************************************
* It appears that your Fortran compiler is unable to produce working
* executables.  A simple test application failed to properly
* execute.  Note that this is likely not a problem with Open MPI,
* but a problem with the local compiler installation.  More
* information (including exactly what command was given to the
* compiler and what error resulted when the command was executed) is
* available in the config.log file in the Open MPI build directory.
**********************************************************************
configure: error: Could not run a simple Fortran program.  Aborting.