53 lines
1.5 KiB
Makefile
53 lines
1.5 KiB
Makefile
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EMULATOR = qemu-system-i386
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AS = ${HOME}/opt/cross/bin/i686-elf-as
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CC = ${HOME}/opt/cross/bin/i686-elf-gcc
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CFLAGS = -std=gnu99 -ffreestanding -O2 -Wall -Wextra
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OFILES = $(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o
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SRC_DIR = src
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BUILD_DIR = build
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CRTBEGIN_OBJ = $(shell $(CC) $(CFLAGS) -print-file-name=crtbegin.o)
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CRTEND_OBJ = $(shell $(CC) $(CFLAGS) -print-file-name=crtend.o)
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CRTI_OBJ = $(BUILD_DIR)/crti.o
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CRTN_OBJ = $(BUILD_DIR)/crtn.o
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OBJ_LINK_LIST = $(CRTI_OBJ) $(CRTBEGIN_OBJ) $(OFILES) $(CRTEND_OBJ) $(CRTN_OBJ)
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INTERNAL_OBJS = $(CRTI_OBJ) $(OFILES) $(CRTN_OBJ)
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all: clean build
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build: build_kernel run
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run:
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$(EMULATOR) -kernel $(BUILD_DIR)/myos.bin
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build_kernel: $(OBJ_LINK_LIST)
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$(CC) -T $(SRC_DIR)/kernel/arch/i386/linker.ld -o $(BUILD_DIR)/myos.bin \
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-ffreestanding -O2 -nostdlib $(OBJ_LINK_LIST) -lgcc
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build_x86_64:
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$(AS) $(SRC_DIR)/cgc/x86_64/crti.s -o $(BUILD_DIR)/crti_64.o
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$(AS) $(SRC_DIR)/cgc/x86_64/crtn.s -o $(BUILD_DIR)/crtn.o
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clean:
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rm -f $(BUILD_DIR)/myos.bin $(INTERNAL_OBJS)
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$(BUILD_DIR)/kernel.o:
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$(CC) -c $(SRC_DIR)/kernel/kernel.c -o $(BUILD_DIR)/kernel.o $(CFLAGS)
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$(BUILD_DIR)/kterm.o:
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$(CC) -c $(SRC_DIR)/kernel/arch/i386/tty/kterm.c -o $(BUILD_DIR)/kterm.o $(CFLAGS)
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$(BUILD_DIR)/boot.o:
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$(AS) $(SRC_DIR)/kernel/arch/i386/boot.s -o $(BUILD_DIR)/boot.o
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$(BUILD_DIR)/crti.o:
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$(AS) $(SRC_DIR)/kernel/arch/i386/crti.s -o $(BUILD_DIR)/crti.o
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$(BUILD_DIR)/crtn.o:
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$(AS) $(SRC_DIR)/kernel/arch/i386/crtn.s -o $(BUILD_DIR)/crtn.o
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