Re: [jamboost] The right configuration mechanism

From: Andrey Melnikov (melnikov_at_[hidden])
Date: 2005-08-12 19:01:00

David Abrahams wrote:
> Vladimir Prus <ghost_at_[hidden]> writes:
> 
> 
>>On Friday 05 August 2005 19:30, David Abrahams wrote:
>>
>>>> I'm not sure if ordinary users want to have all installed toolsets
>>>>configured. Opinions?
>>>
>>>How could it hurt to have them configured? It costs nothing
>>>AFAICT!
>>
>>Except execution time. IIRC, SCons used to search for all tools it
>>knows about and it was a performance problem. OTOH, we'll be
>>searching just for a few compilers, and not for bison/lex/f77 and
>>whatnot.
> 
> 
> Surely we can auto-configure everything that can be detected using the
> windows registry?
> 

We can find the real bottleneck only by profiling. IMO switching to 
registry won't help us a lot. I think that most of the initialization 
time is taken by other activities, and the registry isn't much faster 
than the environment.

Also we cannot rely on the registry even for MSVC because private 
installations don't use it.

Andrey