Re: "Undefined symbols"

[xinant at cognigine dot com (Xinan Tang)]

Hi Nick,

Nick Clifton wrote:

> 
> L31 is a local label, which may be why it is being ignored by the
> linker.
> 
> You could try adding "--trace-symbol L31" to your linker command line
> to see if this helps.


   Thanks for your tips.

   I have found the solution. Basically, adding such a piece of code in

   `elf32-target.c' (target is our target name like elf32-mips.c)

________________________________________________________________________

   if (bfd_is_und_section (symbol->section) && (abfd == (bfd *) NULL)) {
         return bfd_reloc_undefined;
    }
    return bfd_reloc_ok;

__________________________________________________________________________

  Therefore, when linker tries to resolve a relocated symbol at last pass,

it will first check whether the symbol is still in the `UND' section.
If that is the case, it will return an undefined error.

Thanks

--Xinan