AS = sdasz80
CC = sdcc
AR = sdar

BUILD = .build

TARGET = crt
OPT = s

CFLAGS = -mz80 -D__SDCC__ -Iinclude
ASFLAGS = -plosgff

SRC = \
src/crt0.s \
src/bios.s \
src/_mulint.s \
src/random.c \
src/console.c \
src/convert.c \

OBJ_1 = $(notdir $(SRC:.c=.rel))
OBJ_2 = $(notdir $(OBJ_1:.s=.rel))
OBJ = $(addprefix $(BUILD)/, $(OBJ_2))
vpath %.c $(sort $(dir $(SRC)))
vpath %.s $(sort $(dir $(SRC)))

.PHONY: all clean

all: $(BUILD) $(BUILD)/$(TARGET).a

$(BUILD)/%.rel: %.c Makefile | $(BUILD)
	$(CC) -c $(CFLAGS) $< -o $@

$(BUILD)/%.rel: %.s Makefile | $(BUILD)
	$(AS) $(ASFLAGS) $@ $<

$(BUILD)/$(TARGET).a: $(OBJ)
	$(AR) rcs $@ $(OBJ)

$(BUILD):
	mkdir $@

clean:
	rm -fr $(BUILD)