31 lines
903 B
Makefile
31 lines
903 B
Makefile
CC = gcc
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LD = ld
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CFLAGS = -m32 -ffreestanding -fno-pie -fno-stack-protector -fno-builtin -Wall -Wextra -Werror -Wshadow -std=c23
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LDFLAGS = -m elf_i386 -Ttext 0x100000 -nostdlib
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all: .build/nub-os.iso
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clean:
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@rm -r .build 2>/dev/null || true
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build-dir:
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mkdir .build 2>/dev/null || true
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.build/nub-os.iso: build-dir .build/kernel
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mkdir -p .build/iso/boot/grub
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cp grub.cfg .build/iso/boot/grub
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cp .build/kernel .build/iso/boot/
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grub-mkrescue -o .build/nub-os.iso .build/iso/
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.build/kernel: build-dir .build/boot.o .build/kernel.o .build/vga.o
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$(LD) $(LDFLAGS) -Ttext 0x100000 -o .build/kernel .build/boot.o .build/kernel.o .build/vga.o
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.build/kernel.o: build-dir src/kernel.c
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$(CC) $(CFLAGS) -c -o .build/kernel.o src/kernel.c
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.build/vga.o: build-dir src/vga.c
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$(CC) $(CFLAGS) -c -o .build/vga.o src/vga.c
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.build/boot.o: build-dir src/boot.asm
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nasm -f elf32 -o .build/boot.o src/boot.asm
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