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SubjectRe: 2.5.14-dj1: misc.o: undefined reference to `__io_virt_debug'
> Compiling misc.c with -O0 gives a better error message:
> <-- snip -->
> ...
> ld -m elf_i386 -Ttext 0x100000 -e startup_32 -o bvmlinux head.o misc.o
> piggy.o
> misc.o: In function `outb_quad':
> misc.o(.text+0x289c): undefined reference to `__io_virt_debug'
> make[2]: *** [bvmlinux] Error 1
> make[2]: Leaving directory
> `/home/bunk/linux/kernel-2.5/linux-2.5.14-modular/arch/i386/boot/compressed'

Seems like you're not linking in lib/iodebug.c for some reason.

outb_quad calls readb, which calls __io_virt, which calls __io_virt_debug,
which is defined in iodebug.c


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