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