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

From: Daniel Einspanjer (deinspanjer_at_[hidden])
Date: 2006-03-01 09:51:55

Hehe Yes they are. thanks for the pointer.  I should have realized that was 
the right way of doing it. I was just suckered in by all the examples I saw 
of calling the [glob] rule in the source section of targets. ;)
Daniel

"Vladimir Prus" <ghost_at_[hidden]> wrote in message 
news:200603011057.33931.ghost_at_cs.msu.su...
> 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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