How to generate octave pdf document

[Peng Yu]

Hi,

It say on http://www.gnu.org/software/octave/docs.html,

"You can also use those same source files to create a printed copy of
the manual,..."

/tmp$ texi2pdf  /opt/local/share/info/octave.info
This is pdfTeX, Version 3.1415926-1.40.11 (TeX Live 2010)
 restricted \write18 enabled.
entering extended mode
(/opt/local/share/info/octave.info
/opt/local/share/info/octave.info:34: Text line contains an invalid character.
l.34 Node: Top^^?
                 838
? q


I tried the above command and got errors. Could anybody let me know
how to generate the pdf copy?

-- 
Regards,
Peng