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From: Nicola Ken Barozzi <nicolaken@apache.org>
Subject: Re: override
Date: Thu, 07 Aug 2003 16:52:21 +0200
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Jose Alberto Fernandez wrote, On 07/08/2003 16.15:

> Some comments on the issues inside:
> 
> 
>>From: Nicola Ken Barozzi [mailto:nicolaken@apache.org]
...
>>Well, IMHO I personally don't see a real, strong, compelling 
>>reason to 
>>have targets have crosstalk between themselves, but I do have 
>>an equally 
>>strong need to import dependencies.
> 
> The escenario is that you have your tipical:
> 
> a
>    target compile depends=precompile
>    target precompile (do-nothing)
> 
> b
>    target precopile (very complex precompile lib)
> 
> build:
>    import (a,b)

Yes, this is the "incriminated" use-case.

> With cross-talk that is all you need to connect the two
> and get the required effect. Without cross-talk you would need to add
> more targets to build:
> 
>    target precompile depends=b.precompile
> 
> or
> 
>    override-target compile depends=b.precompile, super.compile
> 
> the question is how convinient is to have to thread all this interconnections
> by hand on the importing buildfile.

What about this:

  a @importable="only"
     target compile depends=precompile
     <!-- target precompile (do-nothing) -->

  b
     target precopile (very complex precompile lib)

  build:
     import (a,b)

It should work.

And manual intervention would kick in only in the case of multiple 
clashing precompile targets.

(hey, I said the same thing as in the reply to Costin but with a lot 
less words! Amusing...)

-- 
Nicola Ken Barozzi                   nicolaken@apache.org
             - verba volant, scripta manent -
    (discussions get forgotten, just code remains)
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