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ARCH=i686-elf-
export CC=$(ARCH)gcc
export AS=$(ARCH)as
export CFLAGS=-ffreestanding -O2 -Wall -Wextra -fstack-protector-all
MKDIR=mkdir -p
RM=rm -rf
CP=cp
QEMU=qemu-system-x86_64
#QEMU_DEBUG=-d int -D qemu.log
SOURCE_DIR=src
BUILD_DIR=${CURDIR}/build
ISO_DIR=isodir
AS_SOURCE_DIR=$(SOURCE_DIR)/as
C_SOURCE_DIR=$(SOURCE_DIR)/c
export AS_OBJECT_DIR=$(BUILD_DIR)/as
export C_OBJECT_DIR=$(BUILD_DIR)/c
TARGET=myos
BINARY=$(BUILD_DIR)/$(TARGET).bin
ISO=$(TARGET).iso
CRTI_OBJ=crti.o
CRTN_OBJ=crtn.o
AS_OBJ=boot.o irq.o paging.o
C_OBJ=gdt.o heap.o idt.o kernel.o keyboard.o keymap.o stdio.o string.o tty.o vga.o irq.o stack_protector.o timer.o paging.o
export C_OBJECTS=$(patsubst %,$(C_OBJECT_DIR)/%,$(C_OBJ))
AS_OBJECT=$(patsubst %,$(AS_OBJECT_DIR)/%,$(AS_OBJ))
CRTI_OBJECT=$(patsubst %,$(AS_OBJECT_DIR)/%,$(CRTI_OBJ))
CRTN_OBJECT=$(patsubst %,$(AS_OBJECT_DIR)/%,$(CRTN_OBJ))
export AS_OBJECTS=$(AS_OBJECT) $(CRTI_OBJECT) $(CRTN_OBJECT)
CRTBEGIN_OBJECT=$(shell $(CC) -print-file-name=crtbegin.o)
CRTEND_OBJECT=$(shell $(CC) -print-file-name=crtend.o)
OBJ=$(CRTI_OBJECT) $(CRTBEGIN_OBJECT) $(AS_OBJECT) $(C_OBJECTS) $(CRTEND_OBJECT) $(CRTN_OBJECT)
.PHONY: all compile run run-iso clean
all: compile
$(BINARY): $(OBJ)
$(CC) -T $(SOURCE_DIR)/linker.ld -o $(BINARY) $(CFLAGS) -nostdlib -lgcc $(OBJ)
compile:
./headers.sh
$(MKDIR) $(AS_OBJECT_DIR)
$(MKDIR) $(C_OBJECT_DIR)
$(MAKE) --directory $(AS_SOURCE_DIR)
$(MAKE) --directory $(C_SOURCE_DIR)
$(MAKE) $(BINARY)
$(ISO): $(BINARY)
grub-file --is-x86-multiboot $(BINARY)
mkdir -p $(ISO_DIR)/boot/grub
$(CP) $(BINARY) $(ISO_DIR)/boot/$(TARGET).bin
$(CP) $(SOURCE_DIR)/grub.cfg $(ISO_DIR)/boot/grub/grub.cfg
grub-mkrescue -o $(ISO) $(ISO_DIR)
run: compile
$(QEMU) -kernel $(BINARY) $(QEMU_DEBUG)
run-iso: compile
$(MAKE) $(ISO)
$(QEMU) -cdrom $(ISO)
clean:
$(RM) $(BUILD_DIR) $(ISO_DIR) $(ISO)
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