how to run make check at 64-bit?

[Jack Howarth]

FX,
   When I try...

make check-gfortran RUNTESTFLAGS="--target_board=unix{,-m64}"

...it errors out with...

                === gfortran tests ===

Schedule of variations:
    unix-m64

Running target unix-m64
ERROR: couldn't load description file for unix-m64
make: [check-gfortran] Error 1 (ignored)

Also is unix what you used on linux? I don't see a baseboard in
dejagnu for linux or darwin.
             Jack