make[1]: Leaving directory `/usr/src/linux/arch/x86_64/ia32'
ld -m elf_x86_64 -T /usr/src/linux/arch/x86_64/vmlinux.lds -e stext 
arch/x8                 o arch/x86_64/kernel/head64.o 
arch/x86_64/kernel/init_task.o init/main.o in                 /do_mounts.o \
         --start-group \
         arch/x86_64/kernel/kernel.o kernel/kernel.o mm/mm.o fs/fs.o 
ipc/ipc                 /mm.o arch/x86_64/ia32/ia32.o  \
          drivers/acpi/acpi.o drivers/char/char.o drivers/block/block.o 
driv                 rivers/net/net.o drivers/net/fc/fc.o 
drivers/net/appletalk/appletalk.o driv 
vers/ide/idedriver.o drivers/scsi/scsidrv.o 
drivers/message/fusion/fusion.o                 iver.o 
drivers/pci/driver.o drivers/net/pcmcia/pcmcia_net.o drivers/video/v 
              b/usbdrv.o drivers/usb/gadget/built-in.o 
drivers/media/media.o drivers/md/m
         net/network.o \
         /usr/src/linux/arch/x86_64/lib/lib.a /usr/src/linux/lib/lib.a \
         --end-group \
         -o vmlinux
drivers/acpi/acpi.o(.text.init+0x970): In function `acpi_bus_init':
: undefined reference to `acpi_pic_set_level_irq'
make: *** [vmlinux] Error 1



PS- Is there an amd64 tree somewhere like the PPC tree?

-- 
Once you have their hardware. Never give it back.
(The First Rule of Hardware Acquisition)
Sam Flory  <sflory@rackable.com>