ARCHIVEDIR := archive
PROGRAMSDIR := programs
FILESDIR := files

PROGRAMDIRS := $(wildcard $(PROGRAMSDIR)/*)
PROGRAMBINS := $(patsubst $(PROGRAMSDIR)/%,$(ARCHIVEDIR)/%,$(PROGRAMDIRS))

OUT = initrd.tar

all: ${PROGRAMBINS}
	tar -cf $(OUT) -C $(ARCHIVEDIR) .

.PHONY: $(ARCHIVEDIR)/%
$(ARCHIVEDIR)/% : $(PROGRAMSDIR)/%
	$(MAKE) -C $< OUT=../../$@ ABIDIR=$(ABIDIR)