kernel/Makefile

   1 KERNEL_OBJ = kernel.o entry.o
   2
   3 include drivers/Makefile
   4 include arch/x86/Makefile
   5
   6 ASFLAGS_BASE = -f elf -g dwarf2
   7 CFLAGS_BASE = -fgnu89-inline -ffreestanding -nostdlib -Iinclude \
   8               -Iinclude/arch/x86 -g -DGIT_COMMIT=\"$(GIT_REV)\" \
   9               -O2 -flto
  10 LDFLAGS_BASE = -ffreestanding -nostdlib -lgcc -g -flto
  11
  12 kernel.elf kernel.dbg: $(KERNEL_OBJ)
  13         $(REAL_CC) $(LDFLAGS_BASE) $(LDFLAGS) -T linker.ld $^ -o $@
  14         $(CROSS_COMPILE)objcopy --only-keep-debug kernel.elf kernel.dbg
  15         $(CROSS_COMPILE)objcopy --add-gnu-debuglink=kernel.dbg kernel.elf
  16         $(CROSS_COMPILE)strip --strip-unneeded kernel.elf
  17
  18 clean:
  19         -rm $(KERNEL_OBJ) kernel.elf kernel.dbg
  20
  21 # Implicit rules
  22 %.o: %.c
  23         $(REAL_CC) $(CFLAGS_BASE) $(CFLAGS) -c $< -o $@
  24
  25 %.o: %.s
  26         $(AS) $(ASFLAGS_BASE) $(ASFLAGS) $< -o $@
  27
  28 .PHONY: clean