LN_SRC_TO_BUILD not found

[Malte Meyn]

Hi list,

I’d like to build changes.pdf following the instructions from CG 4.6.2 
(subsection “Building a single document”) but it fails with the error 
message “LN_SRC_TO_BUILD@: Command not found”. Complete output (after 
make-ing the binary and cd-ing to build/Documentation):

$ make out=www out-www/changes.pdf
mkdir -p ./out-www
touch ./out-www/dummy.dep
echo '*' > ./out-www/.gitignore
/usr/bin/python2 -tt 
/home/malte/lilypond/scripts/build/create-version-itexi.py > 
out-www/version.itexi
make --no-builtin-rules -C pictures out=www WWW-1
make[1]: Entering directory 
'/home/malte/lilypond/build/Documentation/pictures'
mkdir -p ./out-www
touch ./out-www/dummy.dep
echo '*' > ./out-www/.gitignore
make[1]: LN_SRC_TO_BUILD@: Command not found
make[1]: *** 
[/home/malte/lilypond/./Documentation/pictures/GNUmakefile:35: 
out-www/slur-esthetics.png] Error 127
make[1]: Leaving directory 
'/home/malte/lilypond/build/Documentation/pictures'
make: *** [/home/malte/lilypond/./Documentation/GNUmakefile:220: 
out-www/pictures] Fehler 2

Does anyone know what’s going on here? Maybe Dan? (commit c6dc1d63 
changes something that contains this LN_SRC_TO_BUILD)

TIA,
Malte