OBJCOPY=objcopy
 LIBGCC := $(shell $(CC) -print-libgcc-file-name) # To benefit from FP/64bits artihm.
 EXTRA := $(shell [ -f ../userland/userprogs.kimg ] && echo ../userland/userprogs.kimg)
 
 all: sos_qemu.img termslave
 
 -include ../.mkvars
 
 # The image is the simple concatenation of the boot sector and the kernel
 # It may be use in bochs or on a real floppy, but NOT in qemu (see below)
 sos_bsect.img: bsect.bin sos.bin
         cat $^ > $@
         @echo "You can use the $@ image in bochs or on a real floppy (NOT qemu)"
 
 # For qemu, the trick is to tell it we have *more* than 1440 sectors (720kB).
 # Rtherwise the qemu disk geometry will be configured to be that of a 720kB
 # floppy, while our boot sector assumes it to be 1.44MB
 sos_qemu.img: sos_bsect.img
         # Padding with 0s after the bsect/kernel image
         cat $< /dev/zero | dd of=$@ bs=1k count=1440
         @echo "You can use the $@ image in qemu, bochs, or on a real floppy"
 
 # we extract the boot sector from the main ELF binary
 bsect.bin: sos_bsect.elf
         $(OBJCOPY) -v -O binary -j .bootsect $< $@
 
 # we extract the kernel code from the main ELF binary
 sos.bin: sos_bsect.elf
         $(OBJCOPY) -v -O binary -R .bootsect $< $@
 
 # The main ELF binary contains the boot sector and the kernel code
 # linked together (hence we deal with a SINGLE image that we split
 # above) because they share some symbol definitions
 sos_bsect.elf: bootsect.o compile_kernel
         $(LD) --warn-common -T ./sos_bsect.lds -o $@ \
                 bootsect.o $(wildcard ../hwcore/*.o ../drivers/*.o ../sos/*.o)\
                 $(EXTRA) $(LIBGCC)
 
 compile_kernel:
         $(MAKE) -C ..
 
 termslave: termslave.c
         cc -Wall -o $@ $<
 
 clean:
         $(RM) *.img *.elf *.bin *~ *.o *.out termslave