Re: [boost] Boost and exceptions

Subject: Re: [boost] Boost and exceptions
From: Daniel James (dnljms_at_[hidden])
Date: 2012-06-23 16:28:09

On 23 June 2012 21:05, Dave Abrahams <dave_at_[hidden]> wrote:
>
> on Sat Jun 23 2012, Mathias Gaunard <mathias.gaunard-AT-ens-lyon.org> wrote:
>
>> On 06/22/2012 08:33 PM, Dave Abrahams wrote:
>>
>>> Good question.  We do have two problematic dependency loops in Boost, but
>>> it's not caused by this sort of header structure:
>>>
>>>       http://f.cl.ly/items/343N460u3b3039091C0g/deps.pdf
>>>
>>
>> What are the loops here?
>> What do the colored boxes and arrows mean?
>
> Each set of same-colored boxes is a SCC in the build dependency graph.
> Heavy black arrows are direct dependencies. Dashed arrows are
> dependencies introduced by usage-requirements (such as these:
> https://github.com/boost-lib/math/blob/master/CMakeLists.txt#L96).  The
> blue ones are members of a transitive reduction of those usage
> dependencies.  Ignoring the gray ones *might* make the structure easier
> to see.

Is this something we should be doing something about? I guess the
Boost.Math circle could possibly be broken by splitting Boost.Math
into smaller modules (obviously up to John).

>> Also this doesn't seem to cover all of Boost.
>
> You don't want to see that graph :-).  It looks something like
> http://f.cl.ly/items/3V2I3A103K1Y45113s3w/source-deps.pdf

That's pretty crazy. Do you know if separating test dependencies would
make much of a difference?