| |
| # Reference: http://gcc.gnu.org/projects/cxx0x.html |
| |
| set(_cmake_oldestSupported "(__GNUC__ * 100 + __GNUC_MINOR__) >= 407") |
| |
| set(GNU49_CXX14 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 409 && __cplusplus > 201103L") |
| set(_cmake_feature_test_cxx_contextual_conversions "${GNU49_CXX14}") |
| set(_cmake_feature_test_cxx_attribute_deprecated "${GNU49_CXX14}") |
| set(_cmake_feature_test_cxx_decltype_auto "${GNU49_CXX14}") |
| set(_cmake_feature_test_cxx_digit_separators "${GNU49_CXX14}") |
| set(_cmake_feature_test_cxx_generic_lambdas "${GNU49_CXX14}") |
| set(_cmake_feature_test_cxx_lambda_init_captures "${GNU49_CXX14}") |
| # GNU 4.3 supports binary literals as an extension, but may warn about |
| # use of extensions prior to GNU 4.9 |
| # http://stackoverflow.com/questions/16334024/difference-between-gcc-binary-literals-and-c14-ones |
| set(_cmake_feature_test_cxx_binary_literals "${GNU49_CXX14}") |
| # The feature below is documented as available in GNU 4.8 (by implementing an |
| # earlier draft of the standard paper), but that version of the compiler |
| # does not set __cplusplus to a value greater than 201103L until GNU 4.9: |
| # http://gcc.gnu.org/onlinedocs/gcc-4.8.2/cpp/Standard-Predefined-Macros.html#Standard-Predefined-Macros |
| # http://gcc.gnu.org/onlinedocs/gcc-4.9.0/cpp/Standard-Predefined-Macros.html#Standard-Predefined-Macros |
| # So, CMake only reports availability for it with GNU 4.9 or later. |
| set(_cmake_feature_test_cxx_return_type_deduction "${GNU49_CXX14}") |
| |
| # Introduced in GCC 4.8.1 |
| set(GNU481_CXX11 "((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 40801) && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_decltype_incomplete_return_types "${GNU481_CXX11}") |
| set(_cmake_feature_test_cxx_reference_qualified_functions "${GNU481_CXX11}") |
| set(GNU48_CXX11 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 408 && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_alignas "${GNU48_CXX11}") |
| # The alignof feature works with GNU 4.7 and -std=c++11, but it is documented |
| # as available with GNU 4.8, so treat that as true. |
| set(_cmake_feature_test_cxx_alignof "${GNU48_CXX11}") |
| set(_cmake_feature_test_cxx_attributes "${GNU48_CXX11}") |
| set(_cmake_feature_test_cxx_inheriting_constructors "${GNU48_CXX11}") |
| set(_cmake_feature_test_cxx_thread_local "${GNU48_CXX11}") |
| set(GNU47_CXX11 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 407 && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_alias_templates "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_delegating_constructors "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_extended_friend_declarations "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_final "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_noexcept "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_nonstatic_member_init "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_override "${GNU47_CXX11}") |
| set(_cmake_feature_test_cxx_user_literals "${GNU47_CXX11}") |
| # NOTE: C++11 was ratified in September 2011. GNU 4.7 is the first minor |
| # release following that (March 2012), and the first minor release to |
| # support -std=c++11. Prior to that, support for C++11 features is technically |
| # experiemental and possibly incomplete (see for example the note below about |
| # cxx_variadic_template_template_parameters) |
| # TODO: Should be supported by GNU 4.6 |
| set(GNU46_CXX11 "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}") |
| set(_cmake_feature_test_cxx_defaulted_move_initializers "${GNU46_CXX11}") |
| set(_cmake_feature_test_cxx_enum_forward_declarations "${GNU46_CXX11}") |
| set(_cmake_feature_test_cxx_nullptr "${GNU46_CXX11}") |
| set(_cmake_feature_test_cxx_range_for "${GNU46_CXX11}") |
| set(_cmake_feature_test_cxx_unrestricted_unions "${GNU46_CXX11}") |
| # TODO: Should be supported by GNU 4.5 |
| set(GNU45_CXX11 "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_explicit_conversions "${GNU45_CXX11}") |
| set(_cmake_feature_test_cxx_lambdas "${GNU45_CXX11}") |
| set(_cmake_feature_test_cxx_local_type_template_args "${GNU45_CXX11}") |
| set(_cmake_feature_test_cxx_raw_string_literals "${GNU45_CXX11}") |
| # TODO: Should be supported by GNU 4.4 |
| set(GNU44_CXX11 "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_auto_type "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_defaulted_functions "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_deleted_functions "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_generalized_initializers "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_inline_namespaces "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_sizeof_member "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_strong_enums "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_trailing_return_types "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_unicode_literals "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_uniform_initialization "${GNU44_CXX11}") |
| set(_cmake_feature_test_cxx_variadic_templates "${GNU44_CXX11}") |
| # TODO: If features are ever recorded for GNU 4.3, there should possibly |
| # be a new feature added like cxx_variadic_template_template_parameters, |
| # which is implemented by GNU 4.4, but not 4.3. cxx_variadic_templates is |
| # actually implemented by GNU 4.3, but variadic template template parameters |
| # 'completes' it, so that is the version we record as having the variadic |
| # templates capability in CMake. See |
| # http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2555.pdf |
| # TODO: Should be supported by GNU 4.3 |
| set(GNU43_CXX11 "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_decltype "${GNU43_CXX11}") |
| set(_cmake_feature_test_cxx_default_function_template_args "${GNU43_CXX11}") |
| set(_cmake_feature_test_cxx_long_long_type "${GNU43_CXX11}") |
| set(_cmake_feature_test_cxx_right_angle_brackets "${GNU43_CXX11}") |
| set(_cmake_feature_test_cxx_rvalue_references "${GNU43_CXX11}") |
| set(_cmake_feature_test_cxx_static_assert "${GNU43_CXX11}") |
| # TODO: Should be supported since GNU 3.4? |
| set(_cmake_feature_test_cxx_extern_templates "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| # TODO: Should be supported forever? |
| set(_cmake_feature_test_cxx_func_identifier "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_variadic_macros "${_cmake_oldestSupported} && __cplusplus >= 201103L") |
| set(_cmake_feature_test_cxx_template_template_parameters "${_cmake_oldestSupported} && __cplusplus >= 199711L") |