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I would like to try some of the new features that will make it to the C++2014 revision like std::make_unique and the std::filesystem functionnalities. I use ubuntu 14.04 and GCC/G++ 4.8 (with libstdc++-4.8-dev installed), and the flag -std=c++1y set. But there is no std::make_unique when including <tr1/memory>, and no <experimental/...> headers.
What do I need to do to be able to use some of those new features ?
Thanks !
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0 released, full of improved C++11 and C++14 features. GCC 4.9. 0 is now available, with further improved C++11 and C++14 conformance.
My target platform (RHEL 7) ships with G++ 4.8. 5, which does not support C++14 completely. It provides the -std=c++11 option for C++11 support, and the -std=c++1y option for “The next revision of the ISO C++ standard, tentatively planned for 2017.
GCC supports the original ISO C++ standard published in 1998, and the 2011, 2014, 2017 and mostly 2020 revisions. The original ISO C++ standard was published as the ISO standard (ISO/IEC 14882:1998) and amended by a Technical Corrigenda published in 2003 (ISO/IEC 14882:2003).
Status of Experimental C++11 Support in GCC 4.8GCC provides experimental support for the 2011 ISO C++ standard. This support can be enabled with the -std=c++11 or -std=gnu++11 compiler options; the former disables GNU extensions.
<tr1/memory> is not a C++14 standard header. You simply want <memory>. Same for <dynarray>.
However, neither are supported in GCC 4.8. You need to upgrade to GCC 4.9 or clang 5.
The GCC compiler support status for C++1y can be checked on the Language Features status page, and the library support on the Library Support status page.
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