Re: Relevant properties

From: David Abrahams (dave_at_[hidden])
Date: 2004-10-06 07:20:44

Vladimir Prus <ghost_at_[hidden]> writes:

> David Abrahams wrote:
>> Vladimir Prus <ghost_at_[hidden]> writes:
>> > exe foo : foo.cpp : <relevant-feature>none ;
>>
>> I am not fond of the name "relevant-feature." I suggest:
>>
>> exe foo : foo.cpp : <build-subdirectory>none
>
> 1. The build directory is still used, in my proposal. That is, targets are 
> placed in "bin", not in ".".

That's why it says "subdirectory"

> 2. How do we specify that we want some specific property in path. E.g.
>
> exe foo : foo.cpp : <relevant-feature>doc-format ;

<build-subdirectory>doc-format

> The <build-subdirectory> does not sound good in that context.

Why not?

I'm warming to relevant-feature a bit, but it's still obtuse. I know
I came up with the term, but I never expected it to be in a prominent
place in the system's UI.

>> That said, is this really something we want to set on a
>> target-by-target basis?
>
> Sometimes so, sometimes not. One use case is files produced by a
> parser generator -- if we add the generated files to CVS, we want
> Boost.Build to use "bin" path. If we don't add them to CVS, we want
> "bin/gcc/whatever" path.
>
> As I've mentioned, with <relevant-feature> it's still possible do
> this this on per-generator basic -- the generator will add
> <relevant-feature> properties just before creating the dependency
> graph.

OK.
-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com