depends -sub CXX gcc &&
# TODO: add openmpix spell in system
# TODO: add measures to ensure consistent hwloc among openmpi and users
# Any dependent on hwloc might need rebuild after update.
depends hwloc --with-hwloc=external &&
optional_depends -sub FORTRAN gcc \
                  '--enable-mpi-fortran' \
                 '--disable-mpi-fortran' \
                 'Fortran support'
