Re: [boost] backward/hash_set (g++ 4.3.0)

From: Doug Gregor (dgregor_at_[hidden])
Date: 2007-10-30 14:19:43

On Oct 30, 2007, at 1:54 PM, Ralf W. Grosse-Kunstleve wrote:

>> A stupid question: Why do you use __GLIBCXX__ instead of __GNUC__ and
>> __GNUC_MINOR__ as described on
>> http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html?
>
> I was just following the precedence in boost/config/stdlib/ 
> libstdcpp3.hpp:
>
> #if defined(__GLIBCXX__) || (defined(__GLIBCPP__) &&  
> __GLIBCPP__>=20020514) // GCC >= 3.1.0
>
> This is what's currently in the boost svn.
> With trial-and-error I found out that __GLIBCPP__ is not defined by
> the "experimental" g++ 4.3.0 from the gcc svn trunk.
>
> I don't know what's the best set of #ifdefs in the long run. I'd leave
> that to people more knowledgeable about the future g++ development  
> path
> (e.g. Doug).

__GLIBCXX__ is the macro that will be used in all future releases.  
__GLIBCPP__ will no longer be used.

        - Doug