APPS := init

APPS_DIR := $(LUNA_ROOT)/apps
APPS_OBJ := $(APPS_DIR)/lib
APPS_BIN := $(APPS_DIR)/bin

REAL_APPS := $(patsubst %, $(APPS_BIN)/%, $(APPS))

ASMC := nasm
ASMFLAGS := -felf64

LD := x86_64-elf-ld
APP_LDFLAGS := -T$(APPS_DIR)/apps.ld -nostdlib

$(APPS_OBJ)/%.o: $(APPS_DIR)/%.asm
	@mkdir -p $(@D)
	$(ASMC) $(ASMFLAGS) -o $@ $^

$(APPS_BIN)/%: $(APPS_OBJ)/%.o
	@mkdir -p $(@D)
	$(LD) $(APP_LDFLAGS) -o $@ $^

apps-build: $(REAL_APPS)

apps-install: $(REAL_APPS)
	@mkdir -p $(LUNA_ROOT)/initrd/bin
	cp $(REAL_APPS) $(LUNA_ROOT)/initrd/bin

apps-clean:
	rm -f $(APPS_OBJ)/*
	rm -f $(APPS_BIN)/*