-MF_FILES := $(wildcard *.mf)
-FONT_FILES = $(wildcard *[0-9].mf)
+MF_FILES := $(call src-wildcard,*.mf)
EXTRA_DIST_FILES += $(MF_FILES)
MF_TFM_FILES = $(addprefix $(outdir)/, $(FONT_FILES:.mf=.tfm))
MF_DVI_FILES = $(addprefix $(outdir)/, $(FONT_FILES:.mf=.dvi))