id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
12805,Build time config is not consistent with compile time config macros.,Kohei Takahashi,John Maddock,"Some permissive compilers allow to use some of c++11 (or 14/1z/...) features as a extension: e.g. clang allows using of rvalue references in gnu++98 mode.
In that case, build time config (i.e. cxx11_rvalue_references) tells `yes` but `boost/config.hpp` defines `BOOST_NO_CXX11_RVALUE_REFERENCES` and `<utility>` doesn't define `std::move`, `std::forward`, and so on.
Thus, the regression tests that depending on macros will be issued and failure.

This is not only clang and rv-ref combination but also any other compiler and feature combinations: gcc allows lambda in gnu++98 mode but clang doesn't.

IMO, the build time config should be compliant compile time config than compiler error.
Any thoughts?",Support Requests,closed,To Be Determined,config,Boost Development Trunk,Problem,fixed,,