SRC = $(wildcard [[:digit:]][[:digit:]])
TMP = $(filter-out makefile $(wildcard *.mk) $(SRC),$(wildcard *))

all: $(SRC)

clean:
	-rm -frv $(TMP)

$(SRC):
	@printf "%80s\n \t$@\n%80s\n" | tr ' ' '#'
	@make -f $@ | grep -v '^make.*direct.*'

.PHONY: all clean $(SRC)