[U-Boot] weak functions versus conditional compile

[Mike Frysinger]

On Monday 17 November 2008 16:17:54 Graeme Russ wrote:
> I have a quick question I would like the groups opinion on:
>
> What is the rule-of-thumb for defining a function as weak versus using
> conditional compilation (or #defines)?
>
> For example, I am doing some work on cleaning up the structure and design
> of the i386 / sc520 code. Specifically, some functionality such as
> interrupts, timers and CPU reset have more 'powerful' implementations in
> the sc520.
>
> Should I declare these functions as weak in the core i386 code and use a
> config #define to override or should I seperate the functions out into
> seperate source files and use conditional compilation?

i wonder if weak functions that are always satisfied and used unconditionally 
result in larger code, or if this is only a problem for people whose linkers 
lack lazy relaxation support ?
-mike
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