blob: 258638f29cf1ec8476bf60b2d68b01d3312748b1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
OUT_DIR = out
SRC = src
BUILD = build
TARGET = i686-elf
ISO = myos
ASM := $(sort $(shell find $(SRC) -name '*.s'))
C := $(sort $(shell find $(SRC) -name '*.c'))
INCLUDE_DIR = $(SRC)/include
INCLUDES := -I$(INCLUDE_DIR)
ASSEMBLER = $(TARGET)-as
CC = $(TARGET)-gcc
CFLAGS = $(INCLUDES) -std=gnu99 -ffreestanding -O2 -Wall -Wextra
TEST_FLAGS = -nographic
LINK_FILE = linker.ld
LDFLAGS = -O2 -nostdlib -lgcc -ffreestanding
OBJS =
C_OBJS := $(C:$(SRC)/%.c=$(BUILD)/%.o)
ASM_OBJS := $(ASM:$(SRC)/%.s=$(BUILD)/%.o)
CRTBEGIN_OBJ := $(shell $(CC) $(CFLAGS) -print-file-name=crtbegin.o)
CRTEND_OBJ := $(shell $(CC) $(CFLAGS) -print-file-name=crtend.o)
CRTI_OBJ = $(BUILD)/header/crti.o
CRTN_OBJ = $(BUILD)/header/crtn.o
OBJS += $(CRTI_OBJ) $(CRTBEGIN_OBJ)
OBJS += $(C_OBJS) $(ASM_OBJS)
OBJS += $(CRTEND_OBJ) $(CRTN_OBJ)
INTERNAL_OBJS = $(CRTI_OBJ) $(ASM_OBJS) $(C_OBJS) $(CRTN_OBJ)
DEPS := $(OBJS:.o=.d)
.PHONY: all
all: $(OUT_DIR)/$(ISO).iso
run: all
qemu-system-i386 -cdrom $(OUT_DIR)/$(ISO).iso
$(OUT_DIR)/$(ISO).iso : $(OUT_DIR)/isodir/boot/$(ISO).bin
grub-mkrescue -o $@ $(OUT_DIR)/isodir
$(OUT_DIR)/isodir/boot/$(ISO).bin : $(OBJS)
$(CC) -T $(SRC)/$(LINK_FILE) -o $@ $(LDFLAGS) $^
$(BUILD)/%.o: $(SRC)/%.s
mkdir -p $(BUILD)
mkdir -p $(@D)
$(ASSEMBLER) $^ -o $@
$(BUILD)/%.o: $(SRC)/%.c
mkdir -p $(BUILD)
mkdir -p $(@D)
$(CC) $(CFLAGS) -c $^ -o $@
clean:
rm -rf $(INTERNAL_OBJS)
rm -rf $(OUT_DIR)/$(ISO).iso
rm -rf $(OUT_DIR)/isodir/boot/$(ISO).bin
|
