dist.py 文件源码

def _set_global_opts_from_features(self):
        """Add --with-X/--without-X options based on optional features"""

        go = []
        no = self.negative_opt.copy()

        for name, feature in self.features.items():
            self._set_feature(name, None)
            feature.validate(self)

            if feature.optional:
                descr = feature.description
                incdef = ' (default)'
                excdef = ''
                if not feature.include_by_default():
                    excdef, incdef = incdef, excdef

                go.append(('with-' + name, None, 'include ' + descr + incdef))
                go.append(('without-' + name, None, 'exclude ' + descr + excdef))
                no['without-' + name] = 'with-' + name

        self.global_options = self.feature_options = go + self.global_options
        self.negative_opt = self.feature_negopt = no