error compiling yum source

hello,
I am encountering an error compiling yum source, 3.2.X Branch - yum-3_2_X.
i used command in /yum:  ./yummain install sip


error:
Setting up Install Process
Parsing package install arguments
Traceback (most recent call last):
 File "./yummain.py", line 236, in <module>
   user_main(sys.argv[1:], exit_code=True)
 File "./yummain.py", line 229, in user_main
   errcode = main(args)
 File "./yummain.py", line 104, in main
   result, resultmsgs = base.doCommands()
 File "/home/pranjal/yum/yum/cli.py", line 344, in doCommands
   return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd,
self.extcmds)
 File "/home/pranjal/yum/yum/yumcommands.py", line 175, in doCommand
   return base.installPkgs(extcmds)
 File "/home/pranjal/yum/yum/cli.py", line 576, in installPkgs
   self.install(pattern=arg)
 File "/home/pranjal/yum/yum/yum/__init__.py", line 2592, in install
   continue
NameError: global name 'tx_return' is not defined

-- 
--Regards
--Pranjal Pandit