Re: [jamboost] Re: [BBv2] fix for response file regeneration

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-10-21 01:26:08

On Thursday 20 October 2005 19:46, David Abrahams wrote:
> Vladimir Prus <ghost_at_[hidden]> writes:
> > The first problem can be only handled by build signatures -- computing
> > MD5 of all build properties, storing them to a file, and forcing rebuild
> > when stored MD5 of a file is different.
>
> FWIW, MD5 is not needed. We could just write some bjam code to the
> file, such as:
>
> build-properties = <feature1>value1 <feature2>value2 ... ;
>
> Then load that file and compare values.

Yes. The hard part is not MD5, though. It's creating the file, deciding 
*where* to create it, and associated machinery. 

We have MD5 builtin, so storing MD5 as opposed to list of properties is very 
simple.

- Volodya

-- 
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build V2: http://boost.org/boost-build2