depends -sub FORTRAN gcc  &&

optional_depends  gnuplot                 \
                  ''                      \
                  ''                      \
                  'for 2d and 3d graphs'  &&

optional_depends  readline                           \
                  '--with-readline'                  \
                  '--without-readline'               \
                  'for better command-line support'  &&

#
# Can't find the MPI libraries
#
#optional_depends  mpich2                                   \
#                  '--with-mpi'                             \
#                  '--without-mpi'                          \
#                  'for Message Passing Interface support'  &&

#
# Untested
#
optional_depends  atlas                                             \
                  '--with-blas'                                     \
                  '--without-blas'                                  \
                  'for automatically tuned linear algebra support'  &&

optional_depends  fftw                             \
                  '--with-fftw'                    \
                  '--without-fftw'                 \
                  'use the system-installed fftw'