Re: 2.5.47-ac5:undefined reference to `boot_gdt_table'

["J.E.J. Bottomley" <James.Bottomley@steeleye.com>]

>   	ld -m elf_i386 -e stext -T arch/i386/vmlinux.lds.s arch/i386/kernel/
> head.o \ arch/i386/kernel/init_task.o  init/built-in.o --start-group
> usr/built-in.o  \ arch/i386/kernel/built-in.o  arch/i386/mm/built-in.o
>  \ arch/i386/mach-generic/built-in.o  kernel/built-in.o  mm/built-in.o
>  fs/built-in.o  \ ipc/built-in.o  security/built-in.o  crypto/
> built-in.o  drivers/built-in.o  \ sound/built-in.o  arch/i386/pci/
> built-in.o  net/built-in.o  lib/lib.a  \ arch/i386/lib/lib.a
> --end-group  -o .tmp_vmlinux1 \ arch/i386/kernel/built-in.o(.data+0x15a
> 5): In function `gdt_48': : undefined \
>                 reference to `boot_gdt_table' make: ***
> [.tmp_vmlinux1] Error 1

I think this is because -ac5 has X86_TRAMPOLINE dependent on X86_LOCAL_APIC.  
If you change

config X86_TRAMPOLINE
	bool
	depends on SMP || (VOYAGER && SMP) || X86_LOCAL_APIC

to

	depends on SMP

in arch/i386/Kconfig

does this fix the problem?

Alan: I'm just getting -ac5 up and running on voyager now, so I'll send in 
this as part of the rebased patches.

James