[boost] [config] Macro for detecting thread_local storage support

Subject: [boost] [config] Macro for detecting thread_local storage support
From: Kyle Lutz (kyle.r.lutz_at_[hidden])
Date: 2014-12-29 18:06:00

I have looked but been unable to find any macro in Boost.Config for
detecting compiler support for the C++11 thread_local storage
specifier. Does such functionality exist?

I would like to use something like this to automatically detect
compiler support for thread_local for use by the proposed
Boost.Compute library. Currently I rely on the users defining
BOOST_COMPUTE_HAVE_THREAD_LOCAL in order to enable support. Hopefully
there is a better way?

-kyle