[Help-glpk] How to find all solutions of binary problem?

[davidpfilter-gnu]

I searched the archives for "multiple solutions" and
found good info for real-valued solutions but none for
ILP. Is it possible to get glpsol to generate all
binary solutions?

btw, my problem involves up to 56 binary vars where
the constraints have real-valued coefficients and
limits, and the objective fn minimizes the sum of the
vars.

   -dp-