find $(outdir)/music-glossary/ -name '*'.png -o -name '*'.ly | xargs rm -f
# symbolic links to save space
(cd $(outdir)/music-glossary/ ; ln -sf ../*.png ../*.ly . )
find $(outdir)/music-glossary/ -name '*'.png -o -name '*'.ly | xargs rm -f
# symbolic links to save space
(cd $(outdir)/music-glossary/ ; ln -sf ../*.png ../*.ly . )