add C++26 version/header marcos #519
Description
Please add support for C++26 in boost/config/detail. I hope it is not too late for 1.89.
cxx_composite.hpp
#if defined(BOOST_NO_CXX23)\
|| defined(BOOST_NO_CXX26_HDR_CONTRACTS)\
|| defined(BOOST_NO_CXX26_HDR_DEBUGGING)\
|| defined(BOOST_NO_CXX26_HDR_HAZARD_POINTER)\
|| defined(BOOST_NO_CXX26_HDR_HIVE)\
|| defined(BOOST_NO_CXX26_HDR_INPLACE_VECTOR)\
|| defined(BOOST_NO_CXX26_HDR_LINALG)\
|| defined(BOOST_NO_CXX26_HDR_RCU)\
|| defined(BOOST_NO_CXX26_HDR_SIMD)\
|| defined(BOOST_NO_CXX26_HDR_TEXT_ENCODING)
# define BOOST_NO_CXX26
#endif
suffix.hpp
#if (!defined(__has_include) || (BOOST_CXX_VERSION < 202400L))
# define BOOST_NO_CXX26_HDR_CONTRACTS
# define BOOST_NO_CXX26_HDR_DEBUGGING
# define BOOST_NO_CXX26_HDR_HAZARD_POINTER
# define BOOST_NO_CXX26_HDR_HIVE
# define BOOST_NO_CXX26_HDR_INPLACE_VECTOR
# define BOOST_NO_CXX26_HDR_LINALG
# define BOOST_NO_CXX26_HDR_RCU
# define BOOST_NO_CXX26_HDR_SIMD
# define BOOST_NO_CXX26_HDR_TEXT_ENCODING
#else
#if (!__has_include(<contracts>) || !defined(__cpp_lib_contracts) || (__cpp_lib_contracts < 202502L)) && !defined(BOOST_NO_CXX26_HDR_CONTRACTS)
# define BOOST_NO_CXX26_HDR_CONTRACTS
#endif
#if (!__has_include(<debugging>) || !defined(__cpp_lib_debugging) || (__cpp_lib_debugging < 202311L)) && !defined(BOOST_NO_CXX26_HDR_DEBUGGING)
# define BOOST_NO_CXX26_HDR_DEBUGGING
#endif
#if (!__has_include(<hazard_pointer>) || !defined(__cpp_lib_hazard_pointer) || (__cpp_lib_hazard_pointer < 202306L)) && !defined(BOOST_NO_CXX26_HDR_HAZARD_POINTER)
# define BOOST_NO_CXX26_HDR_HAZARD_POINTER
#endif
#if (!__has_include(<hive>) || !defined(__cpp_lib_hive ) || (__cpp_lib_hive < 202502L)) && !defined(BOOST_NO_CXX26_HDR_HIVE)
# define BOOST_NO_CXX26_HDR_HIVE
#endif
#if (!__has_include(<inplace_vector>) || !defined(__cpp_lib_inplace_vector ) || (__cpp_lib_inplace_vector < 202406L)) && !defined(BOOST_NO_CXX26_HDR_INPLACE_VECTOR)
# define BOOST_NO_CXX26_HDR_INPLACE_VECTOR
#endif
#if (!__has_include(<linalg>) || !defined(__cpp_lib_linalg) || (__cpp_lib_linalg < 202311L)) && !defined(BOOST_NO_CXX26_HDR_LINALG)
# define BOOST_NO_CXX26_HDR_LINALG
#endif
#if (!__has_include(<rcu>) || !defined(__cpp_lib_rcu) || (__cpp_lib_rcu < 202306L)) && !defined(BOOST_NO_CXX26_HDR_RCU)
# define BOOST_NO_CXX26_HDR_RCU
#endif
#if (!__has_include(<simd>) || !defined(__cpp_lib_simd) || (__cpp_lib_simd < 202411L)) && !defined(BOOST_NO_CXX26_HDR_SIMD)
# define BOOST_NO_CXX26_HDR_SIMD
#endif
#if (!__has_include(<text_encoding>) || !defined(__cpp_lib_text_encoding) || (__cpp_lib_text_encoding < 202306L)) && !defined(BOOST_NO_CXX26_HDR_TEXT_ENCODING)
# define BOOST_NO_CXX26_HDR_TEXT_ENCODING
#endif
#endif
thx
Gero