Re: [Qemu-devel] [PATCH] signrom.sh: portability fix

[Jan Kiszka]

On 2009-07-17 16:37, Alexander Graf wrote:
> 
> On 17.07.2009, at 15:23, Christoph Egger wrote:
> 
>>
>> Hi!
>>
>> Attached patch makes signrom.sh working on NetBSD.
>> The output of the 'od' command leads to a syntax error
>> which breaks the build.
> 
> So why replace the $(( ... )) calculation with expr then? A few lines
> below there's another $(( )) that apparently works.

Picking up this old topic again: Forking expr in this tight loop is a
very bad idea. It makes signing a fairly long running step of the build
process for any non-trivial rom (I'm about to add one of those).

Can you please provide an example output for the ${nums} variable that
used to break for you so that we can find a fork-free algorithm?

Thanks,
Jan

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