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Only build files that have changed

This commit is contained in:
Ry 2022-11-02 11:31:14 -07:00
parent 7197016ae7
commit 0904ad4d99
1 changed files with 7 additions and 8 deletions
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13
Makefile
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@ -4,21 +4,20 @@ FILES = src/int21.s \
src/kernel.s src/kernel.s
.PHONY: all qemu clean .PHONY: all qemu clean
all: prepare boot kernel img all: obj/boot.o obj/kernel.o $(TARGET)
qemu: all qemu: all
qemu-system-i386 -fda $(TARGET) qemu-system-i386 -fda $(TARGET)
prepare: obj/boot.o: src/boot.s
mkdir -p obj @mkdir -p obj
boot: src/boot.s
nasm -I. -Isrc src/boot.s -o obj/boot.o nasm -I. -Isrc src/boot.s -o obj/boot.o
kernel: $(FILES) obj/kernel.o: $(FILES)
@mkdir -p obj
nasm -I. -Isrc src/kernel.s -o obj/kernel.o nasm -I. -Isrc src/kernel.s -o obj/kernel.o
img: $(TARGET):
cat obj/boot.o obj/kernel.o > $(TARGET) cat obj/boot.o obj/kernel.o > $(TARGET)
clean: clean: