Re: [Boost-build] Lastest BB v2 CVS seems slower to start up than 1.33.1

From: Eoin (eoin-keyword-boost.jam.dca6c0_at_[hidden])
Date: 2006-08-18 12:31:53

Reece Dunn wrote:
> Eoin wrote:
>
>   
>> Hello, I recently started using the latest CVS version of Boost to test 
>> my most recent project and ensure it's compatible, in the process of 
>> doing so I've gotten the impression that the latest CVS version of 
>> Boost.Build v2 is slower to get going over the one in 1.33.1; 
>> specifically there is a longer pause between when you execute bjam and 
>> when it prints "warning: Python location is not configured" and the 
>> other initial messages.
>>     
>
> This is a known issue.
>
>   
>> Just thought I'd share this to see if anyone else has noticed the same 
>> behavior or perhaps instead I've done something wrong with my setup.
>>     
>
> It is not your setup. When invoking the top-level Jamfile.v2 script in the
> Boost directory, BBv2 is globbing for header files to setup a header target,
> allowing you to install the headers through BBv2. This is one of the things
> that is causing the slowing. There was a thread on this a short while back.
>
> There have also been people who are using a different hashing algorithm
> to the one that bjam currently uses which is reported to improve the
> speed.
>
> Other things can be used to speed up BBv2, but ultimately, the bjam
> language isn't designed for what BBv2 is doing - BBv2 is pushing the
> bjam language to its limits. This is one of the motivations for moving
> Boost.Build to Python.
>   
Thanks for the response, while its a pity that things are slower it is 
promising that an alternative is being investigated, I look forward to 
the future of BBv2.

Kind regards, Eoin.