problema di compilazione

[Alessandra]

Ciao a tutti!
sto provando a compilare la nuova versione di Grass
e ne l cercare di risolvere le dipende si verifica il seguente problema:

dpkg -i /home/topogis/ge_grass/requirement/tcl8.3_8.3.5-5_i386.deb
(Reading database ... 76859 files and directories currently installed.)
Preparing to replace tcl8.3 8.3.5-5 (using .../tcl8.3_8.3.5-5_i386.deb) ...
Unpacking replacement tcl8.3 ...
Setting up tcl8.3 (8.3.5-5) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "it_IT:it:en_GB:en",
        LC_ALL = (unset),
        LANG = "it_IT.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

come posso risolverlo?
grazie
ciao


-- 
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Alessandra