Problems witch samba instalation !!!

[Jorge Yuri de Lion Yaname]

    I'm from Brazil. I'm sorry, but my english is more less. When gone
install
the Samba, in my HP-UX 10.20, of the error, after of "./configure":

    checking configure sumary
    ERROR: No locking available. Running Samba would be unsafe
    configure: error: summary failue. Aborting config.

    Waiting the answer,

    Jorge Yuri de Lion Yamane - Bauru - Brazil