Re: 2.5.14-dj1: misc.o: undefined reference to `__io_virt_debug'

From: Adrian Bunk (
Date: Tue May 07 2002 - 14:44:41 EST

On Tue, 7 May 2002, Dave Jones wrote:

> On Tue, May 07, 2002 at 08:36:09PM +0200, Adrian Bunk wrote:
> > misc.o: In function `puts':
> > misc.o(.text+0x1c46): undefined reference to `__io_virt_debug'
> > misc.o(.text+0x1c7c): undefined reference to `__io_virt_debug'
> > misc.o(.text+0x1ca9): undefined reference to `__io_virt_debug'
> > misc.o(.text+0x1cde): undefined reference to `__io_virt_debug'
> Odd. Repeatable after a make distclean ?

Yes, it's repeatable with a clean kernel source.

> I always build my test kernels with CONFIG_DEBUG_IOVIRT=y, and I
> haven't seen this happen.

But you build without CONFIG_MULTIQUAD?

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
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

<-- snip -->



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