[patch #7074] shared_ptr & weak_ptr from boost

[Peter Simons]

Update of patch #7074 (project autoconf-archive):

                  Status:                    None => Postponed              
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #2:

Hi Piotr,

there seems to be a certain overlap between these macros and the AX_BOOST_*
family of macros. It is possible to use, say AX_BOOST_BASE, to test for a
specific version of the Boost libraries, which is pretty much equivalent to
testing for the existence of the individual Boost headers: it's been well
documented which headers were added in which version. It's not obvious to me
what extra-value your macros add compared to that generic solution.

There is a whole other can of worms, namely the fact that shared_ptr<> is now
a part of the C++ TR1 standard. IMHO, a macro that addresses this class
specifically should be able to recognize different shared_ptr<> providers --
say TR1 vs. Boost -- and allow users to switch between either version
transparently.

If you feel that this is a topic that you'd be interested in, we'd greatly
appreciate a new submission!

Take care,
Peter

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