Error building from sources

[asettico]

Hi all,
I'm experiencing a build error while running make. Here is the message 
(sorry for the line truncation):

make[1]: *** No rule to make target `iaudio_bl_flash.bmp', needed by 
`iaudio_bl_flash.h'.  Stop.
make: *** [tools] Error 2

I configured the environment for iPod Video 64 MB, without applying patches. 
I download the daily sources tar ball.

Thanks for the attention.
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 ,= ,-_-. =.  asettico ~ [ http://rossomaltese.it/   ]
((_/)o o(\_)) OpenPGP ~~ [ 1024D/1CB926BA 2003-11-29 ]
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