Compiling 1_62_0_b1 gives errors in Fiber about requiring C++1

[Tony Lewis <tonyelewis@…>]

I tried to compile Boost 1_62_0_b1 but got lots of errors in the new Fiber library like this:

gcc.compile.c++ bin.v2/libs/fiber/build/gcc-5.2.1/release/link-static/threading-multi/algo/algorithm.o
In file included from /usr/include/c++/5/chrono:35:0,
                 from ./boost/fiber/algo/algorithm.hpp:10,
                 from libs/fiber/src/algo/algorithm.cpp:7:
/usr/include/c++/5/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental
, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support for the \
  ^
In file included from ./boost/fiber/algo/algorithm.hpp:15:0,
                 from libs/fiber/src/algo/algorithm.cpp:7:
./boost/fiber/properties.hpp:40:5: warning: identifier ‘nullptr’ is a keyword in C++11 [-Wc++0x-compat]
     algo::algorithm *   algo_{ nullptr };
     ^
./boost/fiber/properties.hpp:45:5: warning: identifier ‘noexcept’ is a keyword in C++11 [-Wc++0x-compat]
     void notify() noexcept;
     ^
In file included from ./boost/context/detail/apply.hpp:19:0,
                 from ./boost/fiber/context.hpp:20,
                 from libs/fiber/src/algo/algorithm.cpp:9:
./boost/context/detail/index_sequence.hpp:38:5: warning: identifier ‘constexpr’ is a keyword in C++11 [-Wc++0x-compat]
     static constexpr std::size_t size() {
     ^
In file included from ./boost/fiber/context.hpp:20:0,
                 from libs/fiber/src/algo/algorithm.cpp:9:
./boost/context/detail/apply.hpp:32:5: warning: identifier ‘decltype’ is a keyword in C++11 [-Wc++0x-compat]
     -> decltype( invoke( std::forward< Fn >( fn), std::get< I >( std::forward< Tpl >( tpl) ) ... ) )
     ^

I was using commands like:

./bootstrap.sh --prefix=/my/dest/dir
./b2 --layout=tagged variant=release

...and I saw these problems under both GCC 5.2.1 and Clang 3.6.2 (on Ubuntu 15.10, Linux 4.2.0-42-generic, x86_64).

[olli]

CXX11-Fetaure checks applied to fiber/build/Jamfile.v2 - should prevent building boost.fiber if feature check fails

[Tony Lewis <tonyelewis@…>]

Thanks for this.

Is there some way that a new Boost beta .tar.gz can be packaged so that we can confirm that this problem definitely won't slip into the full 1.62.0 release?