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CC := i686-elf-gcc
AS := nasm
QEMU := qemu-system-x86_64
LIMINE ?= /opt/homebrew/share/limine
CFLAGS := -std=c11 -ffreestanding -O0 -g -Wall -Wextra -Iinclude -MMD -MP
ASFLAGS := -felf32
LDFLAGS := -T linker.ld -ffreestanding -O0 -nostdlib
LDLIBS := -lgcc
BUILD := build
OBJ := $(BUILD)/obj
ISO := $(BUILD)/iso
BIN := $(BUILD)/macaroni.bin
IMAGE := $(BUILD)/macaroni.iso
SRCS := $(shell find src -name '*.c' -o -name '*.asm')
OBJS := $(SRCS:src/%=$(OBJ)/%.o)
LIMINE_FILES := limine-bios-cd.bin limine-bios.sys limine-uefi-cd.bin
.PHONY: all bin demo clean
all: $(IMAGE)
bin: $(BIN)
demo: $(IMAGE)
$(QEMU) -chardev file,id=char0,path=/tmp/serial.log,signal=off -serial chardev:char0 -cdrom $<
clean:
rm -rf $(OBJ) $(ISO) $(BIN) $(IMAGE)
$(OBJ)/%.c.o: src/%.c
@mkdir -p $(@D)
$(CC) $(CFLAGS) -c $< -o $@
$(OBJ)/%.asm.o: src/%.asm
@mkdir -p $(@D)
$(AS) $(ASFLAGS) $< -o $@
$(BIN): $(OBJS) linker.ld
$(CC) $(LDFLAGS) $(OBJS) -o $@ $(LDLIBS)
$(ISO)/limine.conf:
@mkdir -p $(@D)
printf 'timeout: 0\n/macaroni\n protocol: multiboot1\n kernel_path: boot():/macaroni.bin\n' > $@
$(IMAGE): $(BIN) $(ISO)/limine.conf
cp $(BIN) $(addprefix $(LIMINE)/,$(LIMINE_FILES)) $(ISO)/
xorriso -as mkisofs -R -r -J -b limine-bios-cd.bin -no-emul-boot \
-boot-load-size 4 -boot-info-table --efi-boot limine-uefi-cd.bin \
-efi-boot-part --efi-boot-image --protective-msdos-label \
$(ISO) -o $@
limine bios-install $@
-include $(OBJS:.o=.d)
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