Re: [boost] Strange libstdc++ versions in travis-ci testers

Rene Rivera wrote:

On Thu, Jun 28, 2018 at 4:40 PM Peter Dimov via Boost wrote:

...

To detect the actual libstdc++ version, you should use the Boost.Config macro, as it's generally more reliable.

Why is it more reliable?

__GLIBCXX__ is a date, which is not very useful for determining the version. There's _GLIBCXX_RELEASE but that's only for 7 and up. Config uses __has_include to detect the version under Clang, __GNUC__ under g++.