Bison on windows does not produce an output file.
This is the error message I get.
m4_define([b4_percent_define(lr.keep_unreachable_states)], [[false]]) m4_define([b4_rhs_min], [[-1]]) m4_define([b4_pact_min], [[-5]]) m4_define([b4_conflicting_rules], [[ 0]])
I have solved this question myself, this is for others.