MathOS/Makefile at main · ProxyCipher/MathOS · GitHub

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CC = gcc
AS = nasm
LD = ld
CFLAGS = -m32 -ffreestanding -Wall -nostartfiles -fno-builtin -nostdlib
ASFLAGS = -f elf32
LDFLAGS = -m elf_i386 -T linker.ld

SRC_DIR = src
OBJ_DIR = obj

C_SOURCES := $(shell find $(SRC_DIR) -type f -name '*.c' 2>/dev/null)
ASM_SOURCES := $(shell find $(SRC_DIR) -type f -name '*.s' 2>/dev/null)

OBJ_FILES := $(C_SOURCES:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o) \
			 $(ASM_SOURCES:$(SRC_DIR)/%.s=$(OBJ_DIR)/%.o)

KERNEL_BIN = MathOS.bin
ISO_DIR = iso
ISO_FILE = MathOS.iso

.PHONY: all compile iso run clean

all: $(KERNEL_BIN)

compile: $(KERNEL_BIN)

$(KERNEL_BIN): $(OBJ_FILES)
	@echo "[+] Linking $@"
	@$(LD) $(LDFLAGS) -o $@ $^

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
	@mkdir -p $(dir $@)
	@echo "[+] Compiling $< to $@"
	$(CC) $(CFLAGS) -c $< -o $@

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.s
	@mkdir -p $(dir $@)
	@echo "[+] Compiling $< to $@"
	$(AS) $(ASFLAGS) -o $@ $<

iso: $(KERNEL_BIN)
	@mkdir -p $(ISO_DIR)/boot/grub
	cp $(KERNEL_BIN) $(ISO_DIR)/boot/
	cp grub.cfg $(ISO_DIR)/boot/grub/
	@echo "[+] Creating ISO $(ISO_FILE)"
	grub-mkrescue --output=$(ISO_FILE) $(ISO_DIR)

run: iso
	qemu-system-i386 -boot d -cdrom $(ISO_FILE) -m 512 -vga std

clean:
	rm -rf $(OBJ_DIR) $(KERNEL_BIN) $(ISO_DIR) $(ISO_FILE)