Thats all. (un)fortunately I see NO error message.
Here's the 'make doc' error I see:
Command: DEPTH=../../ TOP_SRC_DIR=/home/fede/src/lilypond-git
PERL_UNICODE=SD texi2html --prefix=index --split=section
--error-limit=0 -I /home/fede/src/lilypond-git/Documentation/it -I
/home/fede/src/lilypond-git/Documentation/pictures -I
out-www/it/usage/ -I ./out-www/en -I
/home/fede/src/lilypond-git/Documentation/en -I
/home/fede/src/lilypond-git/Documentation/en/included -I ./out-www
-I /home/fede/src/lilypond-git/Documentation
--init-file=/home/fede/src/lilypond-git/Documentation/lilypond-texi2html-lang.init
--document-language=it
--init-file=/home/fede/src/lilypond-git/Documentation/lilypond-texi2html.init
--output=out-www/it/usage/ out-www/it/usage.texi
** Node following `Variabili d'ambiente' in menu `Relocation' and
in sectionning `Riposizionamento' differ
** `Riposizionamento' doesn't appear in menus
** `Uso da linea di comando' is up for `Riposizionamento', but has
no menu entry for this node
** No node following `Riposizionamento' in menu, but `LilyPond in
una gabbia chroot' follows in sectionning
*** Unknown node in menu entry `Relocation' (in
out-www/it/usage/running.texi l. 59)
Max error number exceeded
Probably that error message is from _your_
Documentation/out-www/it/usage.splittexi.log.
Now let's have a look at _my_
Documentation/out-www/it/usage.splittexi.log:
[...]
Please quote the entire contents of that file on your system.
Which versions of makeinfo / texi2html are installed on your system?
(texi2html --version, makeinfo --version)
Do you work on translations of manuals in the 'master' branch?