Re: [gentoo-dev] tr1 dependencies

[Ciaran McCreesh]

On Wed, 31 Jan 2007 23:26:06 +0000 Ciaran McCreesh
<ciaranm@×××××××.org> wrote:
| virtual/tr1-memory
| virtual/tr1-unordered-containers
| virtual/tr1-random
| virtual/tr1-regex
| 
| Rather a lot of work, and rather icky...

Looking at this some more... We're probably talking about needing the
following new style virtuals:

tr1-utilities (tuples and smart pointers)
tr1-containers (array and unordered associative containers)
tr1-call-wrappers (mem_fn, reference_wrapper, function, bind)
tr1-type-traits
tr1-numerics
tr1-regex
tr1-c-compatibility

The category names match up with the chapter names in "The C++ Standard
Library Extensions" (Pete Becker / Addison Wesley / 0-321-41299-0).

In terms of providers:

g++-4.1 has utilities, containers, call-wrappers and type-traits.

g++-4.2 adds c-compatibility and numerics.

boost has utilities, containers, call-wrappers, type-traits, numerics
and regex, but in the wrong namespaces. There's a boost tr1 wrapper
being developed, and everything I've seen that uses tr1 so far includes
the namespace using wrappers to make boost an option. Also note that
boost focuses more upon getting stuff to work with every single
compiler than upon decent performance or making things not take weeks
to compile -- most boost headers pull in several megs of other header
files, which *really* hurts compile times.

There are already quite a few packages out there using utilities and
containers.

So far tr2 isn't sufficiently standardised to be relevant to this
discussion.

-- 
Ciaran McCreesh
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