Re: [Boost-build] How can I pass the property-set as a parameter to a rule call from source section of target?

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-03-01 02:57:33

On Wednesday 01 March 2006 02:22, Daniel Einspanjer wrote:
> I'd like to be able to declare the sources of a target like this:
>
> rule get_extra_source ( properties )
> {
>     local cust_name = [ $(properties).get <customer> ] ;
>     return [ glob fubar-$(cust_name).cpp ] ;
> }
> exe fubar
>
>     : # sources
>
>         foo.cpp
>         bar.cpp
>         [ get_extra_source ]
>     ;

Just indirect conditional requirements together with the <source> feature:

    rule get_extra_source ( properties * )
    {
       local cust_name = [ feature.get-values <customer> : $(properties) ] ;
       local s = [ glob fubar-$(cust_name).cpp ] ;
       return <source>$(s) ;
    }

    exe foobar : foo.cpp : <conditional>@get_extra_source ;

You can find a simpler example attached.

Aren't indirect conditional requirements cool?

HTH,
Volodya

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