Something

  CC      drivers/scsi/ata_piix.o
  LD      drivers/scsi/sd_mod.o
  LD      drivers/scsi/built-in.o
  CC      drivers/serial/serial_core.o
  CC      drivers/serial/8250.o
  CC      drivers/serial/8250_pci.o
  CC      drivers/serial/8250_early.o
  LD      drivers/serial/built-in.o
  LD      drivers/serial/jsm/built-in.o
  LD      drivers/usb/atm/built-in.o
  LD      drivers/usb/class/built-in.o
  LD      drivers/usb/core/built-in.o
  CC      drivers/usb/host/pci-quirks.o
  LD      drivers/usb/host/built-in.o
  LD      drivers/usb/image/built-in.o
  LD      drivers/usb/input/built-in.o
  LD      drivers/usb/media/built-in.o
  LD      drivers/usb/media/podxtpro/built-in.o
  LD      drivers/usb/misc/built-in.o
  LD      drivers/usb/misc/sisusbvga/built-in.o
  LD      drivers/usb/mon/built-in.o
  LD      drivers/usb/net/built-in.o
  LD      drivers/usb/net/eagle/built-in.o
  LD      drivers/usb/storage/built-in.o
  LD      drivers/usb/built-in.o
  LD      drivers/usb/gadget/built-in.o
  LD      drivers/video/backlight/built-in.o
  CC      drivers/video/console/dummycon.o
  CC      drivers/video/console/vgacon.o
  LD      drivers/video/console/built-in.o
  LD      drivers/video/built-in.o
  LD      drivers/built-in.o
drivers/scsi/built-in.o: In function `do_drive_get_GTF': multiple definition of `do_drive_get_GTF'
drivers/ide/built-in.o: first defined here
ld: Warning: size of symbol `do_drive_get_GTF' changed from 554 in drivers/ide/built-in.o to 1290 in drivers/scsi/built-in.o
make[2]: *** [drivers/built-in.o] Error 1
make[1]: *** [drivers] Error 2
make[1]: Leaving directory `/usr/src/linux-source-2.6.15'
make: *** [stamp-build] Error 2