blob: 0a86795e74df650e2cbf30b04eb6a3df72a746d9 (
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
|
CC = i686-elf-gcc
AS = i686-elf-as
CFLAGS =
MKDIR = mkdir -p
RM = rm -rf
CP = cp
SOURCE_DIR = src
BUILD_DIR = build
ISO_DIR = isodir
AS_SOURCE = boot.s
C_SOURCE = kernel.c
OBJ_FILES = boot.o kernel.o
CRTBEGIN_OBJ:=$(shell $(CC) -print-file-name=crtbegin.o)
CRTEND_OBJ:=$(shell $(CC) -print-file-name=crtend.o)
OBJ = $(BUILD_DIR)/crti.o $(CRTBEGIN_OBJ) $(patsubst %,$(BUILD_DIR)/%,$(OBJ_FILES)) $(CRTEND_OBJ) $(BUILD_DIR)/crtn.o
# Creating iso file
.PHONY: all
all: $(BUILD_DIR)/myos.bin
grub-file --is-x86-multiboot $(BUILD_DIR)/myos.bin
mkdir -p $(ISO_DIR)/boot/grub
$(CP) $(BUILD_DIR)/myos.bin $(ISO_DIR)/boot/myos.bin
$(CP) $(SOURCE_DIR)/grub.cfg $(ISO_DIR)/boot/grub/grub.cfg
grub-mkrescue -o myos.iso $(ISO_DIR)
# Linking object files
$(BUILD_DIR)/myos.bin: $(OBJ)
$(MKDIR) $(BUILD_DIR)
$(CC) -T $(SOURCE_DIR)/linker.ld -o $(BUILD_DIR)/myos.bin -ffreestanding -O2 -nostdlib $(OBJ) -lgcc
# Compiling as sources
$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.s
$(MKDIR) $(BUILD_DIR)
$(AS) $< -o $@
# Compiling C sources
$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.c
$(MKDIR) $(BUILD_DIR)
$(CC) -c $< -o $@ -std=gnu99 -ffreestanding -O2 -Wall -Wextra
# Cleaning
.PHONY: clean
clean:
$(RM) $(BUILD_DIR) $(ISO_DIR) myos.iso
|
