Cannot generate a pdf or html from doc/cloog.texi

[pal-stdr]

Hello

According to the Cloog Manual "5 Documentation", I have tried to generate the pdf doc for cloog version 0.21.1. But it is giving me following error.

texi2pdf cloog.texi 
This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019/Debian) (preloaded format=pdfetex)
 restricted \write18 enabled.
entering extended mode

(./cloog.texi (/usr/share/texmf/tex/texinfo/texinfo.tex
Loading texinfo [version 2019-09-20.22]: pdf, fonts, markup, glyphs,
page headings, tables, conditionals, indexing, sectioning, toc, environments,
defuns, macros, cross references, insertions, localization, formatting,
and turning on texinfo input format.)
./cloog.texi:38: I can't find file `gitversion.texi'.
@temp ->@input gitversion.texi 
                               
@includezzz ...and @input #1 }@expandafter }@temp 
                                                  @popthisfilestack 
l.38 @include gitversion.texi
                             
(Press Enter to retry, or Control-D to exit)
Please type another input file name
./cloog.texi:38: Emergency stop.
@temp ->@input gitversion.texi 
                               
@includezzz ...and @input #1 }@expandafter }@temp 
                                                  @popthisfilestack 
l.38 @include gitversion.texi
                             
./cloog.texi:38:  ==> Fatal error occurred, no output PDF file produced!
Transcript written on cloog.log.
/usr/bin/texi2dvi: pdfetex exited with bad status, quitting.

Also I have tried makeinfo --html --no-split cloog.texi. But no luck.

Later I have found an pdf online doc v0.16.0. Now my questions are

1. How can I resolve the pdf doc gen issue for latest cloog 0.21.0 version?
2. If I can't, would it be okay to follow the online pdf v0.16.0?

Thanks in advance!