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make: explicit build dir, separate stage1 target so it can be called easier

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vmttmv
2025-10-25 19:52:39 +03:00
parent dd68fd805f
commit dd37ba8ed6
1 changed files with 16 additions and 9 deletions
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25
Makefile
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@@ -4,25 +4,32 @@ LD = ld
QEMU = qemu-system-i386 QEMU = qemu-system-i386
IMG_SIZE = 1440k IMG_SIZE = 1440k
BUILD_DIR = build
BOOT_SRC = bootloader/boot.asm BOOT_SRC = bootloader/boot.asm
BOOT_BIN = build/boot.bin BOOT_BIN = $(BUILD_DIR)/boot.bin
BOOT_IMG = build/boot.img BOOT_IMG = $(BUILD_DIR)/boot.img
KERNEL_SRC = kernel/kmain.c KERNEL_SRC = kernel/kmain.c
KERNEL_BIN = build/kernel.bin KERNEL_BIN = $(BUILD_DIR)/kernel.bin
DISK_IMG = build/disk.img DISK_IMG = $(BUILD_DIR)/disk.img
all: $(BOOT_IMG) $(KERNEL_BIN) $(DISK_IMG) all: $(BOOT_IMG) $(KERNEL_BIN) $(DISK_IMG)
$(BOOT_BIN): $(BOOT_SRC) stage1: $(BOOT_IMG)
$(BUILD_DIR):
mkdir -p $@
$(BOOT_BIN): $(BOOT_SRC) | $(BUILD_DIR)
$(AS) -f bin -o $@ $< $(AS) -f bin -o $@ $<
$(BOOT_IMG): $(BOOT_BIN) $(BOOT_IMG): $(BOOT_BIN)
cp $(BOOT_BIN) $@ cp $(BOOT_BIN) $@
truncate -s $(IMG_SIZE) $@ truncate -s $(IMG_SIZE) $@
$(KERNEL_BIN): $(KERNEL_SRC) $(KERNEL_BIN): $(KERNEL_SRC) | $(BUILD_DIR)
$(CC) -ffreestanding -c $< -o build/kernel.o $(CC) -ffreestanding -c $< -o $(BUILD_DIR)/kernel.o
$(LD) -T bootloader/linker.ld -o $@ build/kernel.o $(LD) -T bootloader/linker.ld -o $@ $(BUILD_DIR)/kernel.o
$(DISK_IMG): $(BOOT_IMG) $(KERNEL_BIN) $(DISK_IMG): $(BOOT_IMG) $(KERNEL_BIN)
dd if=$(BOOT_IMG) of=$@ bs=512 seek=4 dd if=$(BOOT_IMG) of=$@ bs=512 seek=4
@@ -32,4 +39,4 @@ run: $(DISK_IMG)
$(QEMU) -drive file=$<,format=raw,if=floppy $(QEMU) -drive file=$<,format=raw,if=floppy
clean: clean:
rm -rf build rm -rf $(BUILD_DIR)