我已经通过vcpkg安装了boost-program-options版本1.78。当我使用
clang++
和-std=c++20
进行编译时,会出现以下错误。但是当我使用g++
进行编译时,不会出现这种情况。根据此链接,std::unary_function
自C++11以来已被弃用。In file included from /home/david/C/vcpkg/installed/x64-linux/include/boost/program_options/variables_map.hpp:12:
In file included from /home/david/C/vcpkg/installed/x64-linux/include/boost/any.hpp:20:
In file included from /home/david/C/vcpkg/installed/x64-linux/include/boost/type_index.hpp:29:
In file included from /home/david/C/vcpkg/installed/x64-linux/include/boost/type_index/stl_type_index.hpp:47:
/home/david/C/vcpkg/installed/x64-linux/include/boost/container_hash/hash.hpp:132:33: warning: 'unary_function<const std::error_category *, unsigned long>' is deprecated [-Wdeprecated-declarations]
struct hash_base : std::unary_function<T, std::size_t> {};
^
/home/david/C/vcpkg/installed/x64-linux/include/boost/container_hash/hash.hpp:692:18: note: in instantiation of template class 'boost::hash_detail::hash_base<const std::error_category *>' requested here
: public boost::hash_detail::hash_base<T*>
^
/home/david/C/vcpkg/installed/x64-linux/include/boost/container_hash/hash.hpp:420:24: note: in instantiation of template class 'boost::hash<const std::error_category *>' requested here
boost::hash<T> hasher;
^
/home/david/C/vcpkg/installed/x64-linux/include/boost/container_hash/hash.hpp:551:9: note: in instantiation of function template specialization 'boost::hash_combine<const std::error_category *>' requested here
hash_combine(seed, &v.category());
^
/bin/../lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/bits/stl_function.h:124:7: note: 'unary_function<const std::error_category *, unsigned long>' has been explicitly marked deprecated here
} _GLIBCXX11_DEPRECATED;
^
/bin/../lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/x86_64-redhat-linux/bits/c++config.h:2340:32: note: expanded from macro '_GLIBCXX11_DEPRECATED'
# define _GLIBCXX11_DEPRECATED _GLIBCXX_DEPRECATED
^
/bin/../lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/x86_64-redhat-linux/bits/c++config.h:2331:46: note: expanded from macro '_GLIBCXX_DEPRECATED'
# define _GLIBCXX_DEPRECATED __attribute__ ((__deprecated__))
为什么boost库使用被废弃的标准部分?忽略这些警告并使用-Wno-deprecated-declarations
是否有错误?