"clang++-17"   -fvisibility-inlines-hidden -Wno-c99-extensions -std=c++20 -stdlib=libc++ -isystem/usr/include/libcxxabi -fPIC -pthread -O0 -fno-inline -Wall -fvisibility=hidden -m64 --target=x86_64-pc-linux  -DBOOST_ALL_NO_LIB=1 -DBOOST_COBALT_USE_STD_PMR=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_LIB=1 -DBOOST_URL_DYN_LINK=1 -DBOOST_URL_NO_LIB=1 -DBOOST_URL_SOURCE   -I".." -I"/var/boost/run/boost_root/libs/assert/include" -I"/var/boost/run/boost_root/libs/core/include" -I"/var/boost/run/boost_root/libs/mp11/include" -I"/var/boost/run/boost_root/libs/optional/include" -I"/var/boost/run/boost_root/libs/predef/include" -I"/var/boost/run/boost_root/libs/system/include" -I"/var/boost/run/boost_root/libs/throw_exception/include" -I"/var/boost/run/boost_root/libs/type_traits/include" -I"/var/boost/run/boost_root/libs/url/include" -I"/var/boost/run/boost_root/libs/variant2/include" -I"/var/boost/run/boost_root/libs/winapi/include"  -c -o "/var/boost/run/results/boost/bin.v2/libs/url/build/clang-linux-17~c++20~lc/debug/x86_64/debug-symbols-off/threading-multi/visibility-hidden/segments_encoded_view.o" "/var/boost/run/boost_root/libs/url/src/segments_encoded_view.cpp"

In file included from /var/boost/run/boost_root/libs/url/src/segments_encoded_view.cpp:13:
In file included from ../boost/url/segments_encoded_view.hpp:16:
In file included from ../boost/url/segments_encoded_base.hpp:16:
In file included from ../boost/url/pct_string_view.hpp:18:
../boost/url/grammar/string_view_base.hpp:867:16: error: use of undeclared identifier 'hash_value'
        return hash_value(s.s_);
               ^
1 error generated.