TARGET_SUBMAKE = $(shell \
	$(PROG_FIND) \
	. \
	-mindepth 2 \
	-type f \
	-name Makefile \
	-printf '%h\n' \
)

TARGET_SRC = $(shell \
	$(PROG_FIND) \
	. \
	-maxdepth 1 \
	-type f \
	-name '*.a65' \
	-printf '%f\n' \
)

TARGET_OBJ = $(patsubst \
	%.a65, \
	$(DIR_BUILD)/$(PROJECT_NAME)/%.o, \
	$(TARGET_SRC) \
)

.PHONY: all $(PROJECT_NAME) $(TARGET_SUBMAKE)

build-dir:
	$(PROG_MKDIR) \
	    $(DIR_BUILD)/$(PROJECT_NAME)

$(DIR_BUILD)/$(PROJECT_NAME)/%.o : %.a65
	$(PROG_AS) \
	    -o $@ \
	    $<

$(TARGET_SUBMAKE):
	$(PROG_MAKE) \
	    -C $@ \
	    MAKEFILE_DEF=$(MAKEFILE_DEF) \
	    MAKEFILE_COMMON=$(MAKEFILE_COMMON) \
	    DIR_BUILD=$(DIR_BUILD)

$(PROJECT_NAME): build-dir $(TARGET_SUBMAKE) $(TARGET_OBJ)

all: $(PROJECT_NAME)