Re: [Boost-build] [bbv2] RFC: Repeated usage requirements.

From: Emil Dotchevski (emildotchevski_at_[hidden])
Date: 2006-03-25 22:20:05

I second this message.

Though I have no experience with v1, I also often find myself having to 
duplicate requirements and usage requirements, and this I agree is prone to 
errors.

However, I think the concepts are different and should be kept separated; I 
think that the ideal solution would be if there was a way to write my own 
wrapper which duplicates them for me, however I don't know jam or bjam well 
enough to write this or even to tell whether it's possible or not... :|

--Emil
----- Original Message ----- 
From: "Rene Rivera" <grafik.list_at_[hidden]>
To: "Boost.Build developer's and user's list" <boost-build_at_[hidden]>
Sent: Saturday, March 25, 2006 12:44 PM
Subject: [Boost-build] [bbv2] RFC: Repeated usage requirements.

> I'm porting over my build system from BBv1 to BBv2, and to be nice, I'm
> trying to not hack things up too much. One of the patterns I'm seeing is
> that in writing library targets I end up duplicating many of the
> requirements into the usage-requirements.
>
> * That seems like a waste of typing resources :-)
>
> * It's prone to errors when I need to change one of them and forget to
> change the other.
>
> If it's not already possible to remove that duplication my suggestion
> would be to:
>
> 1. Allow both kinds of requirements in the requirements section.
>
> 2. To tag requirements that are both regular requirements and
> usage-requirements with <*>.
>
> For example:
>
> lib foo
>   :
>   funky.cpp
>   :
>   <define>COOL=1
>   <*><define>ENABLE_LOG=1
>   <threading>multi:<*><define>THREAD_SAFE=1
>   <link>shared:<define>BUILD_DLL=1
>   :
>   debug
>   :
>   <link>shared:<define>USE_DLL=1
>   ;
>
>
> Thoughts?
>
>
> --
> -- Grafik - Don't Assume Anything
> -- Redshift Software, Inc. - http://redshift-software.com
> -- rrivera/acm.org - grafik/redshift-software.com
> -- 102708583/icq - grafikrobot/aim - grafikrobot/yahoo
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