[Dune] Transition from SmartPointer to shared_ptr

[Christian Engwer]

On Thu, Oct 15, 2009 at 05:11:02PM +0200, Carsten Gräser wrote:
> Jö Fahlke schrieb:
> > Am Thu, 15. Oct 2009, 15:30:38 +0200 schrieb Markus Blatt:
> >> If we think that some tr1 stuff is absolutely necessary, we might
> >> think of dropping support for some older compilers instead.
> > 
> > Well, we don't exactly need to drop support.  We would need to add a
> > dependency on boost for those compilers not implementing tr1 themselves.
> > 
> > Btw, what are the reasons for supporting the old compilers?  Do they compile
> > faster?  Are there installations which have only the old ones?  Other reasons?
> 
> In my opinion the only reason is that there might be users that still use these
> compiler version. Regarding gcc we claim to be compatible with version 3.4.1
> which is more than 5 years old. The last release of the 3.4 series is still
> more then 3.5 years old and a tr1 subset is present in 4.0.0 since 4.5 years.
> If the situation is similar with other compilers (what about icc?) it is
> a reasonable option to drop compatibility - especially if the boost implementation
> can be used as drop in.
> 
> We also could do a user poll on the list to see who uses these old compilers
> - perhaps this is simply no problem.

Especially if you go to cluster installations they often use _very_
old compilers.

Christian

> 
> Carsten
> 
> 
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