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Subject: Re: [Boost-users] [boost-build] building dependencies that use makefiles
From: Mauricio Carneiro (carneiro_at_[hidden])
Date: 2014-03-24 13:55:58

interesting, thank you again!

Mauricio Carneiro, Ph.D.

On Mon, Mar 24, 2014 at 11:40 AM, Steven Watanabe <watanabesj_at_[hidden]>wrote:

> On 03/24/2014 05:22 AM, Mauricio Carneiro wrote:
> >
> > I thought that the application would learn from the library's dependency
> on
> > multi-threading and automatically turn it on, but it didn't. I tried
> moving
> > the <threading>multi to the requirements (together with the
> > <include>htslib) but that didn't do it either. Do you have any insights
> on
> > this?
> >
> You mean that you put <threading>multi in the /usage/
> requirements? Only free features work in usage requirements.
> In theory, I'd like it to work for non-free features, but when
> features can propagate in both directions, figuring out what
> properties to use for a target is a nightmare. I'm not even
> sure that it would be a good idea if I could implement it,
> as I'm afraid that the surprises that it would cause
> might be worse than problems like yours. Anyway, the
> workaround is to use <threading>multi on your application,
> as you found.
> In Christ,
> Steven Watanabe
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