[boost] [config] Using SD-6 macros

Subject: [boost] [config] Using SD-6 macros
From: Edward Diener (eldiener_at_[hidden])
Date: 2015-06-12 11:21:00

I realize I may be late to the discussion, but what is the reason why 
Boost.config does not use the SD-6 macro functionality as the first 
check for all C11 and C14 related configuration options ?

Is it because Boost.config feels that the few current SD-6 
implementations are buggy ?

As I understand SD-6 the implementation of SD-6 itself can always be 
checked effortlessly by an #if defined(__SOME_SD6_MACRO) before 
attempting to use the functionality defined by SD-6, so for the majority 
of compilers which do not implement SD-6 functionality yet Boost.config 
can always and easily fall back on its current checks. But for those 
compilers which do implement SD-6 ( latest clang and gcc 5.1.0 ) surely 
using SD-6 is easier than the many clever ways which Boost.config 
currently finds out how compilers and standard libraries are configured.