def doProcess(self, recipe):
        self.tagList = []
        self.buildReqsComputedForTags = set()
        self.suggestBuildRequires = set()
        # read the system and %(destdir)s tag databases
        for directory in (recipe.macros.destdir+'/etc/conary/tags/',
                          '/etc/conary/tags/'):
            if os.path.isdir(directory):
                for filename in os.listdir(directory):
                    path = util.joinPaths(directory, filename)
                    self.tagList.append(tags.TagFile(path, recipe.macros, True))
        self.fullReqs = self.recipe._getTransitiveBuildRequiresNames()
        _addInfo.doProcess(self, recipe)