+ifeq ($(USE_EXTRACTPDFMARK),yes)
+LILYPOND_BOOK_LILYPOND_FLAGS+= \
+-dfont-export-dir=$(top-build-dir)/out-fonts \
+-dgs-never-embed-fonts
+endif
+
+ifdef QUIET_BUILD
+LILYPOND_BOOK_WARN = --loglevel=NONE
+else
+LILYPOND_BOOK_WARN = --loglevel=WARN
+endif
+