#2207: support all of C++11 in Cactus or the Einstein Toolkit ---------------------------------+------------------------- Reporter: Roland Haas | Type: enhancement Status: new | Priority: minor Milestone: | Component: Cactus Version: development version | Keywords: ---------------------------------+------------------------- We are currently allowing a subset of C++11 to be used in Cactus and the Einstein Toolkit. Looking at configure.in the supported features are:

* the auto specifier * C++ lambdas * C++ range based for

To support all interesting features one would need at least icpc 15 as well as g++ 4.8 and clang 3.3.

== Compiler support ==

The major compilers provide the following information on the features they support:

* [[http://en.cppreference.com/w/cpp/compiler_support%7COverview on cppreference.com]] * [[http://software.intel.com/en-us/articles/c0x-features-supported-by- intel-c-compiler|Features supported by Intel compilers]] * [[http://gcc.gnu.org/projects/cxx0x.html%7CFeatures supported by gcc compilers]] * [[http://clang.llvm.org/cxx_status.html%7CFeatures supported by clang compilers]]

This summarizes the specific C++11 **language** features.

|| ||= Description =||= GCC version =||= Intel version =||= Clang version =||= Notes =|| ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2008/n2672.htm|N2672]] =|| initializer lists || 4.4 || 14.0 || 3.1 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Initializer_lists%7C(1)]] [[http://en.wikipedia.org/wiki/C%2B%2B11#Uniform_initialization%7C(2)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2242.pdf|N2242]] \ [[http://www .open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2555.pdf|N2552]] =|| variadic templates || 4.3 \ 4.4 || 12.1 || 2.9 || Wikipedia: [[http://en.wikipedia.org/wiki/Variadic_template%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2004/n1737.pdf|N1737]] \ [[http://www .open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1984.pdf|N1984]] =|| ''auto'' type || 4.4 || 12.0 || 2.9 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Type_inference%7C(1)]] || ||= [[http://www.open- std.org/JTC1/SC22/WG21/docs/papers/2009/n2930.html|N2930]] =|| range-based for loops || 4.6 || 13.0 || 3.0 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Range-based_for_loop%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf|N2431]] =|| ''nullptr'' constant || 4.6 || 12.1 || 3.0 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Null_pointer_constant%7C(1)]] || ||= [[http://www.open- std.org/JTC1/SC22/WG21/docs/papers/2009/n2927.pdf|N2927]] =|| lambda functions || 4.5 || 12.0 || 3.1 || Wikipedia: [[http://en.wikipedia.org/wiki/Anonymous_function#C.2B.2B_.28since_C.2B.2B11.2...)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2010/n3052.html|N3052]] =|| lambda function conversions || ? || 13.0 || ? || || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2008/n2761.pdf|N2761]] =|| standardized attributes || 4.8 || 12.1 || 3.3 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Attributes%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2006/n1986.pdf|N1986]] =|| delegating constructors || 4.7 || 14.0 || 3.0 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Object_construction_improvement%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.html|N2118]] =|| rvalue references || 4.3 || 12.0 || 2.9 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Rvalue_references_and_move_constructo...)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm|N2346]] =|| defaulted and deleted methods || 4.4 || 12.0 || 2.9, 3.0 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Explicitly_defaulted_and_deleted_spec...)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm|N2442]] =|| raw string literals || 4.5 || 14.0 || 3.0 || Stackoverflow: [[http://stackoverflow.com/a/5460235%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2235.pdf|N2235]] =|| generalized constant expressions || 4.6 || 14.0 || 3.1 || Wikipedia: [[http://en.wikipedia.org/wiki/C++11#constexpr_.E2.80.93_Generalized_constant_...)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2343.pdf|N2343]] \ [[http://www .open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3276.pdf|N3276]] =|| declared type of an expression || 4.3 \ 4.8.1 || 12.0 || 2.9 \ 3.1 || Wikipedia: [[http://en.wikipedia.org/wiki/Decltype%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2437.pdf|N2437]] =|| explicit conversion operators || 4.5 || 13.0 || 3.0 || Stroustrup 4th edition, 18.4.2 || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2005/n1757.html|N1757]] =|| right angle brackets || 4.3 || 11.1 || 2.9 || ''>>'' for template arguments || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2011/n3272.htm|N3272]] =|| override and final || 4.7 || 14.0 || 3.0 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Explicit_overrides_and_final%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2258.pdf|N2258]] =|| template aliases || 4.7 || 12.1 || 3.0 || Wikipedia: [[http://en.wikipedia.org/wiki/C%2B%2B11#Alias_templates%7C(1)]] || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2010/n3053.html|N3053]] =|| move special member functions || 4.6 || 14.0 || 3.0 || || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2008/n2659.htm|N2659]] =|| thread-local storage || 4.8 || 15.0 || 3.3 || || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2341.pdf|N2341]] =|| Alignment support || 4.8 || 15.0 || 3.3 || || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2008/n2756.htm|N2756]] =|| Non-static data member initializers || 4.7 || 14.0 || 3.0 || || ||= [[http://www.open- std.org/jtc1/sc22/wg21/docs/papers/2007/n2347.pdf|N2347 ]] || Strongly- typed enums || 4.4 || 14.0 || 2.9 || ||

This summarizes the specific C++11 **library** features.

||= Description =||= libstdc++ version =||= libc++ version =||= Notes =|| || ''std::begin'', ''std::end'' || 4.5 || * || || || smart pointers || <4.5 || * || Wikipedia: [[http://en.wikipedia.org/wiki/Smart_pointer#C.2B.2B_smart_pointers%7C(1)]] \ Conversion between smart pointers to convertible types is not supported until libstdc++-4.6.1 || || ''std::map::emplace'' || 4.8 || || || || ''std::vector::emplace'' || <4.5 || * || || || ''<regex>'' || 4.9 || || cplusplus.com: [[http://www.cplusplus.com/reference/regex/%7C(1)]] || || ''<type_traits>'' || <4.5 || || cplusplus.com: [[http://www.cplusplus.com/reference/type_traits/%7C(1)]] || || ''<chrono>'' || 4.4 || || Stroustrup 4th edition || || ''<atomic>'' || 4.5 || || cplusplus.com: [[http://www.cplusplus.com/reference/atomic/%7C(1)]] \ std::atomic::exchange does not compile for pointer types with Intel 13 (works with Intel 14) || || ''std::array'' || <4.6 || || || || ''std::to_string'' || || || || || ''std::unordered_map'' || || || || || || ''std::function'' || <=4.6 || || || * First version unknown; libc++ claims [[http://libcxx.llvm.org/index.html #dir-structure|full support]] for all C++11 features.\ See the [[https://gcc.gnu.org/onlinedocs/gcc-4.6.4/libstdc++/manual/manual/status.html... documentation]] (under 20.9.4.3) for a list of unsupported traits.