how to build the documentation

[picca]

I am trying to build the documentation bug I have this error message.

$ ./make-docs.sh 
Running 'doxygen'...
Extracting data...
warning: failed to load external entity "doc/src/doxygen2xml.xsl"
cannot parse doc/src/doxygen2xml.xsl
processing escape sequences...
sed: impossible de lire doc/doc.xml: Aucun fichier ou dossier de ce type
Indexing...
warning: failed to load external entity "doc/doc.xml"
unable to parse doc/doc.xml
Generating HTML...
warning: failed to load external entity "doc/src/xml2html.xsl"
cannot parse doc/src/xml2html.xsl
Done.

some files are missing ?

[picca]

Could you change the mode of make-docs.sh which is not executable, Indeed if this is the right way to build the documentation :)