--disable-dependency-tracking

[Ryan Schmidt]

On Sep 2, 2009, at 11:56, Toby Peterson wrote:

>> I don't know what dependency tracking does, but since the default  
>> is to
>> enable it, I assume it's useful for something. Does anybody know  
>> what it's
>> for or what consequences disabling it could have?
>
> The primary consequence is that builds would be faster. :-)

Ok. What does it do when it is enabled? Why did whoever designed the  
feature decide that most people would want it enabled?