Makefile

   1 AS = yasm
   2 LD = i686-elf-ld
   3 CC = i686-elf-gcc
   4
   5 GIT_REV = $(shell git rev-parse --short HEAD)
   6
   7 KERNEL_OBJ = kernel/entry.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
   8
   9 all: boot.img kernel/kernel.elf
  10
  11 boot.img: boot/x86/boot kernel/kernel.bin
  12         cat boot/x86/boot kernel/kernel.bin > $@
  13         truncate -s1440K $@
  14
  15 boot/x86/boot: boot/x86/boot.s boot/x86/a20.s boot/x86/protected.s boot/x86/print.s
  16         $(AS) -f bin boot/x86/boot.s -o $@
  17
  18 kernel/kernel.bin: ${KERNEL_OBJ}
  19         $(LD) -o $@ -T kernel/linker.ld ${KERNEL_OBJ}
  20
  21 kernel/entry.o: kernel/entry.s
  22         $(AS) -f elf kernel/entry.s -o $@
  23
  24 kernel/arch/x86/tty/tty.o: kernel/arch/x86/tty/tty.c
  25         $(CC) -std=gnu89 -g -o $@ -Iinclude/arch/x86 -ffreestanding -c kernel/arch/x86/tty/tty.c
  26
  27 kernel/drivers/irq/i8259a.o: kernel/drivers/irq/i8259a.c
  28         $(CC) -std=gnu89 -g -o $@ -Iinclude/arch/x86 -ffreestanding -c kernel/drivers/irq/i8259a.c
  29
  30 kernel/arch/x86/irq/idt.o: kernel/arch/x86/irq/idt.c
  31         $(CC) -std=gnu89 -g -o $@ -Iinclude/arch/x86 -ffreestanding -c kernel/arch/x86/irq/idt.c
  32
  33 kernel/arch/x86/irq/sample_handler.o: kernel/arch/x86/irq/sample_handler.c
  34         $(CC) -std=gnu89 -g -o $@ -Iinclude/arch/x86 -ffreestanding -mgeneral-regs-only -c kernel/arch/x86/irq/sample_handler.c
  35
  36 kernel/kernel.o: kernel/kernel.c
  37         $(CC) -std=gnu89 -g -o $@ -Iinclude/arch/x86 -ffreestanding -DGIT_COMMIT=\"$(GIT_REV)\" -c kernel/kernel.c
  38
  39 kernel/kernel.elf: kernel/kernel.bin
  40         $(LD) -o $@ -T kernel/linker.ld ${KERNEL_OBJ} --oformat=elf32-i386
  41
  42 clean:
  43         rm boot/x86/boot kernel/kernel.bin kernel/kernel.elf ${KERNEL_OBJ} boot.img
  44
  45 .PHONY: all clean