# rules for directories with MusicXML files.
-MUSICXML_FILES := $(call src-wildcard,*.xml)
-# LY_FILES=$(addprefix $(outdir)/, $(addsuffix .ly, $(MUSICXML_FILE)))
-# LY_FILES = $(MUSICXML_FILES:%.xml=$(outdir)/%.ly)
-LY_FILES = $(MUSICXML_FILES:%.xml=$(outdir)/%.ly)
+MUSICXML_FILES = $(call src-wildcard,*.xml)
+MUSICMXL_FILES = $(call src-wildcard,*.mxl) # Allow .mxl for compressed files
+OUT_LY_FILES = $(sort ${MUSICXML_FILES:%.xml=$(outdir)/%.ly} ${MUSICMXL_FILES:%.mxl=$(outdir)/%.ly})
+OUT_FILES = $(OUT_LY_FILES)
-
-OUT_FILES = $(LY_FILES)
-
-EXTRA_DIST_FILES +=$(MUSICXML_FILES)
+EXTRA_DIST_FILES += $(MUSICXML_FILES) $(MUSICMXL_FILES) $(call src-wildcard,*.broken)