Makefile for ARMv8 semihosting

Makefile

TARGET = test.elf                                                                                                                                        

CROSS_COMPILE = aarch64-elf-
CC = $(CROSS_COMPILE)gcc
LD = $(CROSS_COMPILE)ld

CSRC = init.c trap.c
ASM_SRC = entry.S trap.S

CFLAGS += -mcpu=cortex-a53
CFLAGS += -specs=rdimon.specs
CFLAGS += -nostartfiles
CFLAGS += -g -DDEBUG
CFLAGS += -Wall -Wextra -Werror -Wpedantic
LDFLAGS += -T./kernel.ld

QEMU = QEMU_AUDIO_DRV=none qemu-system-aarch64

QEMU_OPTS += -semihosting -nographic
QEMU_OPTS += -cpu cortex-a53 -smp 1
QEMU_OPTS += -monitor null -serial null -parallel null
QEMU_OPTS += -machine virt -m 2G


.PHONY: all clean qemu debug

all: $(TARGET)

%.elf: $(CSRC) $(ASM_SRC)
        $(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $^

qemu: $(TARGET)
        $(QEMU) $(QEMU_OPTS) -kernel $<
        @stty isig icanon echo

debug: $(TARGET)
        $(QEMU) $(QEMU_OPTS) -S -s -kernel $<
        @stty isig icanon echo

clean:
        @rm -f $(TARGET)