Makefile

   1 export AS = yasm
   2 ASFLAGS = -g dwarf2 -f elf
   3 export CC = i686-elf-gcc
   4 QEMU = qemu-system-i386 -monitor stdio
   5
   6 export GIT_REV = $(shell git describe --long HEAD)
   7
   8 CFLAGS = -g -fgnu89-inline -Ikernel/include -Ikernel/include/arch/x86 -ffreestanding -DGIT_COMMIT=\"$(GIT_REV)\"
   9
  10 KERNEL_OBJ = kernel/entry.o kernel/arch/x86/halt.o kernel/arch/x86/tty/tty.o kernel/drivers/irq/i8259a.o kernel/arch/x86/irq/idt.o kernel/arch/x86/irq/sample_handler.o kernel/kernel.o
  11
  12 BOOTLOADER_OBJ = boot/x86/mbr boot/x86/vbr-fat32 boot/x86/stage3/LOADER.BIN boot/x86/stage3/loader.elf
  13
  14 default: kernel/kernel.elf bootloader
  15
  16 all: default boot/x86/disk.img
  17
  18 bootloader: $(BOOTLOADER_OBJ)
  19
  20 run: all
  21         $(QEMU) boot/x86/disk.img
  22
  23 debug: all
  24         $(QEMU) -s -S boot/x86/disk.img
  25
  26 boot/x86/mbr: boot/x86/mbr.s
  27 boot/x86/vbr-fat32: boot/x86/vbr-fat32.s boot/x86/fat32/*.s
  28 boot/x86/stage3/LOADER.BIN: boot/x86/stage3/*.s boot/x86/stage3/*.c boot/x86/fat32/*.s boot/x86/stage3/stage3.ld
  29 boot/x86/stage3/loader.elf: boot/x86/stage3/*.s boot/x86/stage3/*.c boot/x86/fat32/*.s boot/x86/stage3/stage3.ld
  30 $(BOOTLOADER_OBJ):
  31         $(MAKE) -C boot/x86
  32
  33 boot/x86/disk.img: boot/x86/mbr boot/x86/vbr-fat32 boot/x86/stage3/LOADER.BIN boot/x86/disk.dump kernel/kernel.elf
  34         truncate -s1G boot/x86/disk.img
  35         sfdisk boot/x86/disk.img < boot/x86/disk.dump
  36         mkfs.fat -F 32 --offset 2048 boot/x86/disk.img
  37         dd if=boot/x86/mbr of=boot/x86/disk.img bs=440 count=1 conv=notrunc
  38         dd if=boot/x86/vbr-fat32 of=boot/x86/disk.img bs=1 skip=90 seek=1048666 conv=notrunc
  39         mcopy -i boot/x86/disk.img@@1M boot/x86/stage3/LOADER.BIN ::.
  40         mcopy -i boot/x86/disk.img@@1M kernel/kernel.elf ::./KERNEL.ELF
  41
  42 kernel/arch/x86/irq/sample_handler.o: kernel/arch/x86/irq/sample_handler.c
  43         $(CC) $(CFLAGS) -mgeneral-regs-only -c $< -o $@
  44
  45 kernel/kernel.elf: $(KERNEL_OBJ)
  46         $(CC) -ffreestanding -nostdlib -o $@ -T kernel/linker.ld ${KERNEL_OBJ} -lgcc
  47         i686-elf-objcopy --only-keep-debug kernel/kernel.elf kernel/kernel.dbg
  48         i686-elf-objcopy --add-gnu-debuglink=kernel/kernel.dbg kernel/kernel.elf
  49         i686-elf-strip --strip-unneeded kernel/kernel.elf
  50
  51 clean:
  52         -rm kernel/kernel.{dbg,elf} ${KERNEL_OBJ}
  53         cd boot/x86 && $(MAKE) clean
  54
  55 .PHONY: default all clean run debug bootloader