Makefile

   1 export CROSS_COMPILE = i686-elf-
   2 export AS = yasm
   3 export CC = gcc
   4 export QEMU = qemu-system-i386 -monitor stdio -cpu pentium2
   5 export GIT_REV = $(shell git describe --long HEAD)
   6 export REAL_CC = $(CROSS_COMPILE)$(CC)
   7 export CFLAGS
   8 export LDFLAGS
   9 export ASFLAGS
  10 MAKEFLAGS += -rR
  11
  12 default: kernel/kernel.elf bootloader
  13 all: default boot/x86/disk.img
  14 run: all
  15         $(QEMU) -drive file=boot/x86/disk.img,format=raw,throttling.iops-total=100
  16 debug: all
  17         $(QEMU) -s -S -drive file=boot/x86/disk.img,format=raw,throttling.iops-total=100
  18
  19 kernel/kernel.elf:
  20         $(MAKE) -C kernel
  21 bootloader:
  22         $(MAKE) -C boot/x86
  23
  24 boot/x86/disk.img: bootloader boot/x86/disk.dump kernel/kernel.elf
  25         truncate -s1G boot/x86/disk.img
  26         sfdisk boot/x86/disk.img < boot/x86/disk.dump
  27         mkfs.fat -F 32 --offset 2048 boot/x86/disk.img
  28         dd if=boot/x86/mbr of=boot/x86/disk.img bs=440 count=1 conv=notrunc
  29         dd if=boot/x86/vbr-fat32 of=boot/x86/disk.img bs=1 skip=90 seek=1048666 conv=notrunc
  30         mcopy -i boot/x86/disk.img@@1M boot/x86/stage3/LOADER.BIN ::.
  31         mcopy -i boot/x86/disk.img@@1M kernel/kernel.elf ::./KERNEL.ELF
  32
  33 clean:
  34         $(MAKE) -C boot/x86 clean
  35         $(MAKE) -C kernel clean
  36
  37 # Even though kernel.elf is a real target, it's considered phony so that the
  38 # kernel Makefile is always run. We don't check is the kernel binary up-to-date
  39 # here because we want to be more recursive.
  40 .PHONY: default all clean run debug bootloader kernel/kernel.elf