"Tom Kent via Boost-Testing" <boost-testing@lists.boost.org> wrote:

On Wed, Feb 22, 2017 at 1:16 PM, John Maddock via Boost-Testing <
boost-testing@lists.boost.org> wrote:

Nearly all the Teeks clang tests are in C++98 mode in-spite of their
names

...

Hmm, that's alarming. Any clang or user-config.jam experts out there who
can tell me what switches are needed to get C++11/14/1x/1y/1z/etc support
to turn on?

I believe you need to add <cxxflags> or <compileflags> plus quotes to user-config.jam.

Example:
using clang : 3.5~c++14 : clang++-3.5 : <cxxflags>"-Wno-c99-extensions -std=c++14" ;