Trying to debug acpi.ko - missing db_readline link

[Nate Lawson]

John wrote:
> I'm trying to follow the procedures for debugging ACPI, and I've
> followed the instructions to create a module with debugging enabled,
> but I can't load it - I get the following error message:
> 
> link_elf: symbol db_readline undefined
> KLD file acpi.ko - could not finalize loading
> 
> Anyone able to kick-start me to the next level?

You need to build the kernel with options KDB (and also options DDB or 
GDB if you want to use either of them).

-- 
Nate