How to use the mk.conditions.values function in mk

relies on previous call to finalEvaluation() that fills usage maps
       in mk.__usageTracker.map!"""
    if config.verbose:
        sys.stdout.write('purging unused variables')
        sys.stdout.flush()
    toKill = []

    vars_to_keep = _getUneliminatableVars()

    # only purge options if we are not writing config file (if we are, an
    # option may be used by another makefile that shares same options file
    # even though the makefile used to generate the options doesn't use it):
    if (mk.vars['WRITE_OPTIONS_FILE'] != '1' or mk.vars['OPTIONS_FILE'] == ''):
        if mk.vars['FORMAT_NEEDS_OPTION_VALUES_FOR_CONDITIONS'] != '0':
            usedOpts = []
            for c in mk.conditions.values():
                usedOpts += [x.option.name for x in c.exprs]
            for o in mk.options:
                if ((o not in mk.__usageTracker.map) and (o not in usedOpts)
                    and (o not in vars_to_keep)):
                    toKill.append((mk.options, mk.__vars_opt, o))
        else:
            for o in mk.options:
                if o not in mk.__usageTracker.map and o not in vars_to_keep:
                    toKill.append((mk.options, mk.__vars_opt, o))

    for v in mk.cond_vars:
        if v not in mk.__usageTracker.map and v not in vars_to_keep:
            toKill.append((mk.cond_vars, mk.__vars_opt, v))
    for v in mk.make_vars:
        if v not in mk.__usageTracker.map and v not in vars_to_keep:
            toKill.append((mk.make_vars, mk.vars, v))

def dumpMakefile():
    print '\nVariables:'
    for v in mk.vars:
        print '  %-30s = %s' % (v, mk.vars[v])

    print '\nOptions:'
    for o in mk.options.values():
        print '  %-30s (default:%s,values:%s)' % (o.name, o.default, o.values)

    print '\nConditions:'
    for c in mk.conditions.values():
        print '  %-30s (%s)' % (c.name,c.exprs)

    print '\nConditional variables:'
    for v in mk.cond_vars.values():
        print '  %-30s' % v.name
        for vv in v.values:
            print '    if %-25s = %s' % (vv.cond.name, vv.value)

    print '\nTargets:'
    for t in mk.targets.values():
        print '  %s %s' % (t.type, t.id)
        for v in t.vars:
            print '    %-28s = %s' % (v, t.vars[v])

o = Struct()
        o.name = opt.name
        o.default = opt.default
        o.defaultStr = __stringify(o.default)
        o.desc = opt.desc
        o.descStr = __stringify(o.desc)
        o.values = opt.values
        o.values_desc = opt.values_desc
        if o.values != None: o.valuesStr = '[%s]' % ','.join(o.values)
        else: o.valuesStr = ''
        options.append(o.name, o)
    dict['options'] = options
    
    # Copy conditions:
    conditions = Container()
    for cond in mk.conditions.values():
        c = Struct()
        c.name = cond.name
        c.exprs = cond.exprs
        conditions.append(c.name, c)
        setattr(conditions, c.name, c)
    dict['conditions'] = conditions

    # Copy conditional variables:
    cond_vars = Container()
    for cv in mk.cond_vars.values():
        c = Struct()
        c.name = cv.name
        c.values = []
        for v in cv.values:
            vv = Struct()
            vv.value = v.value