# rules for directories with html files.
LILYPOND_BOOK_COMMAND = LILYPOND_VERSION=$(TOPLEVEL_VERSION) \
+ PDFTEX=$(PDFTEX) PDFLATEX=$(PDFLATEX) \
$(PYTHON) $(LILYPOND_BOOK) $(LILYPOND_BOOK_INCLUDES) \
--process='$(LILYPOND_BOOK_PROCESS) \
$(LILYPOND_BOOK_LILYPOND_FLAGS)' --output=$(outdir) \