Re: ARM undefined symbols. Again.

[Russell King <rmk+lkml@arm.linux.org.uk>]

On Tue, Feb 08, 2005 at 08:05:01PM +0000, Russell King wrote:
> On Tue, Feb 08, 2005 at 08:42:43PM +0100, Sam Ravnborg wrote:
> > On Mon, Feb 07, 2005 at 11:43:59AM +0000, Russell King wrote:
> > > 
> > > Maybe we need an architecture hook or something for post-processing
> > > vmlinux?
> > Makes sense.
> > For now arm can provide an arm specific cmd_vmlinux__ like um does.
> > 
> > The ?= used in Makefile snippet below allows an ARCH to override the
> > definition of quiet_cmd_vmlinux__ and cmd_vmlinux__
> 
> Great - I'll merge your previous idea with this one and throw a patch
> here.

Well, this was a great idea until you find that this is also used for
linking the intermediate vmlinux objects for kallsyms, and kallsyms
uses weak (== undefined) symbols:

  LD      .tmp_vmlinux1
.tmp_vmlinux1: error: undefined symbol(s) found:
         w kallsyms_addresses
         w kallsyms_markers
         w kallsyms_names
         w kallsyms_num_syms
         w kallsyms_token_index
         w kallsyms_token_table

Maybe kallsyms needs to provide an empty object with these symbols
defined for the first linker pass, instead of using weak symbols?

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 PCMCIA      - http://pcmcia.arm.linux.org.uk/
                 2.6 Serial core