[coreboot] CONFIG_ about which messages to compile in

[ron minnich]

On Tue, Feb 10, 2009 at 9:03 AM, Peter Stuge <peter at stuge.se> wrote:
> Mart Raudsepp wrote:
>> The log level is now given with an argument, so it's trickier to
>> get the code excluded from the binary completely.
>
> Maybe split it up then? (But _only_ statics within the printk code!)

Actually it's not that hard.

You have a global , MAXLOGLEVEL. Turn printk into something like this:

#define printk(a, b, ...) if (a <= MAXLOGLEVEL) print(blah blah)

and then let the compiler optimize it all out.

It's kind of like if (0) { etc. etc. }

>> Likely can coerce gcc to do that with specially crafted code.
>
> I would prefer to avoid that.

This is very non-special

ron