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Makefile
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Makefile
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ASM=nasm
CC=gcc
CC16=/usr/bin/watcom/binl/wcc
LD16=/usr/bin/watcom/binl/wlink
SRC_DIR=src
TOOLS_DIR=tools
BUILD_DIR=build
.PHONY: all floppy_image kernel bootloader clean always tools_fat
all: floppy_image tools_fat
#
# Floppy image
#
floppy_image: $(BUILD_DIR)/main_floppy.img
$(BUILD_DIR)/main_floppy.img: bootloader kernel
dd if=/dev/zero of=$(BUILD_DIR)/main_floppy.img bs=512 count=2880
mkfs.fat -F 12 -n "NBOS" $(BUILD_DIR)/main_floppy.img
dd if=$(BUILD_DIR)/stage1.bin of=$(BUILD_DIR)/main_floppy.img conv=notrunc
mcopy -i $(BUILD_DIR)/main_floppy.img $(BUILD_DIR)/stage2.bin "::stage2.bin"
mcopy -i $(BUILD_DIR)/main_floppy.img $(BUILD_DIR)/kernel.bin "::kernel.bin"
mcopy -i $(BUILD_DIR)/main_floppy.img test.txt "::test.txt"
#
# Bootloader
#
bootloader: stage1 stage2
stage1: $(BUILD_DIR)/stage1.bin
$(BUILD_DIR)/stage1.bin: always
$(MAKE) -C $(SRC_DIR)/bootloader/stage1 BUILD_DIR=$(abspath $(BUILD_DIR))
stage2: $(BUILD_DIR)/stage2.bin
$(BUILD_DIR)/stage2.bin: always
$(MAKE) -C $(SRC_DIR)/bootloader/stage2 BUILD_DIR=$(abspath $(BUILD_DIR))
#
# Kernel
#
kernel: $(BUILD_DIR)/kernel.bin
$(BUILD_DIR)/kernel.bin: always
$(MAKE) -C $(SRC_DIR)/kernel BUILD_DIR=$(abspath $(BUILD_DIR))
#
# Tools
#
tools_fat: $(BUILD_DIR)/tools/fat
$(BUILD_DIR)/tools/fat: always $(TOOLS_DIR)/fat/fat.c
mkdir -p $(BUILD_DIR)/tools
$(CC) -g -o $(BUILD_DIR)/tools/fat $(TOOLS_DIR)/fat/fat.c
#
# Always
#
always:
mkdir -p $(BUILD_DIR)
#
# Clean
#
clean:
$(MAKE) -C $(SRC_DIR)/bootloader/stage1 BUILD_DIR=$(abspath $(BUILD_DIR)) clean
$(MAKE) -C $(SRC_DIR)/bootloader/stage2 BUILD_DIR=$(abspath $(BUILD_DIR)) clean
$(MAKE) -C $(SRC_DIR)/kernel BUILD_DIR=$(abspath $(BUILD_DIR)) clean
rm -rf $(BUILD_DIR)/*