boost 1.74 doesn't actually conform to c++20

[pillowtrucker]

エラーの内容 | Describe the build error

FAILED: OpenSiv3D/Linux/CMakeFiles/Siv3D.dir/__/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp.o 
/nix/store/ld6dvi0n7qai3gzdrb85ykj4s4r0h4r7-clang-wrapper-18.1.1/bin/clang++ -DAS_USE_NAMESPACE -DMUPARSER_STATIC -DWITH_MINIAUDIO -DWITH_NOSOUND -D_GLFW_X11 -D_UNICODE -D__LINUX_ALSA__ -I/home/wrath/GAME/OpenSiv3D/Linux -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/include -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/include/ThirdParty -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/Siv3D-Platform/Linux -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/Siv3D-Platform/macOS_Linux -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/Siv3D-Platform/OpenGL4 -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/Siv3D-Platform/OpenGLES3 -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/ThirdParty -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/ThirdParty/asio -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/ThirdParty/freetype -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/ThirdParty/skia -I/home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/src/ThirdParty/soloud/include -I/nix/store/gbycgp5065ch9ld2m7ws9zsn2x206z1v-opencv-4.9.0/include/opencv4 -I/nix/store/npsd46p4h7i0jdvll62zm8qjgx30i8m3-opusfile-0.12-dev/include/opus -I/nix/store/nmvh6xnj2znv5cjw48mhqmpwz0jsqa4r-libopus-1.5.1-dev/include/opus -I/nix/store/1f0gg0j5z1s4k75z2dwhh0m8cps8rk8c-soundtouch-2.3.2/include/soundtouch -I/nix/store/1rfyg1am0sqclfn4i21whpbf3s8msgna-gtk+3-3.24.41-dev/include/gtk-3.0 -I/nix/store/prdsa3f411y7kmd5w0kyaf9cwj635mc3-at-spi2-core-2.50.2-dev/include/atk-1.0 -I/nix/store/z1xzvmw2bzzk3x403zab39lq0r2sxbkw-glib-2.78.4-dev/include/glib-2.0 -I/nix/store/q6jyzkl2f1capj5yc0rq65i0zfm9b82k-glib-2.78.4/lib/glib-2.0/include -I/nix/store/y66wf2widknj05vg13lcmipdsl9xzlk0-cairo-1.18.0-dev/include/cairo -I/nix/store/ic5wzcpy0mbj7qpxg05j8zdihh3yc986-libpng-apng-1.6.43-dev/include/libpng16 -I/nix/store/fbz0bx2sixjn963jqkjjphdcrm3ig268-gdk-pixbuf-2.42.10-dev/include/gdk-pixbuf-2.0 -I/nix/store/m1kx60ln0zyg4nywl8yrpl6zy0g10srl-pango-1.51.2-dev/include/pango-1.0 -I/nix/store/86flfz614gqln2znq398351jkbx93cd4-harfbuzz-8.3.0-dev/include/harfbuzz -I/nix/store/6lwpqjzka4lpjm3j0mljknla9a2h8lmy-util-linux-minimal-2.39.3-dev/include/uuid -g -std=c++20 -Wall -Wextra -Wno-unknown-pragmas -fPIC -msse4.1 -fcolor-diagnostics -g3 -O0 -pg -DDEBUG -MD -MT OpenSiv3D/Linux/CMakeFiles/Siv3D.dir/__/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp.o -MF OpenSiv3D/Linux/CMakeFiles/Siv3D.dir/__/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp.o.d -o OpenSiv3D/Linux/CMakeFiles/Siv3D.dir/__/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp.o -c /home/wrath/GAME/OpenSiv3D/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp
In file included from /home/wrath/GAME/OpenSiv3D/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp:12:
In file included from /home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/include/Siv3D/FileSystem.hpp:13:
In file included from /home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/include/Siv3D/Common.hpp:14:
In file included from /home/wrath/GAME/OpenSiv3D/Linux/../Siv3D/include/Siv3D/Types.hpp:13:
In file included from /nix/store/j3027vyh2blzvwpn32nvc4fpfhqzi8x9-libcxx-18.1.1-dev/include/c++/v1/cstdint:143:
In file included from /nix/store/j3027vyh2blzvwpn32nvc4fpfhqzi8x9-libcxx-18.1.1-dev/include/c++/v1/__assert:13:
In file included from /nix/store/j3027vyh2blzvwpn32nvc4fpfhqzi8x9-libcxx-18.1.1-dev/include/c++/v1/__assertion_handler:13:
In file included from /nix/store/j3027vyh2blzvwpn32nvc4fpfhqzi8x9-libcxx-18.1.1-dev/include/c++/v1/__config:517:
/nix/store/gzxqm8dyfirbysqjhh78ivam62ll0m87-glibc-2.39-5-dev/include/features.h:414:4: warning: _FORTIFY_SOURCE requires compiling with optimization (-O) [-W#warnings]
  414 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^
In file included from /home/wrath/GAME/OpenSiv3D/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.cpp:13:
In file included from /home/wrath/GAME/OpenSiv3D/Siv3D/src/Siv3D-Platform/Linux/Siv3D/ChildProcess/ChildProcessDetail.hpp:14:
In file included from include/boost/process/child.hpp:25:
In file included from include/boost/process/posix.hpp:8:
In file included from include/boost/process/detail/posix/fd.hpp:15:
In file included from include/boost/process/detail/used_handles.hpp:15:
In file included from include/boost/process/detail/posix/asio_fwd.hpp:10:
In file included from include/boost/asio/ts/netfwd.hpp:29:
In file included from include/boost/asio/execution/blocking.hpp:19:
include/boost/asio/detail/type_traits.hpp:89:7: error: no member named 'result_of' in namespace 'std'; did you mean '::boost::result_of'?
   89 | using std::result_of;
      |       ^~~~~
include/boost/utility/result_of.hpp:61:29: note: '::boost::result_of' declared here
   61 | template<typename F> struct result_of;
      |                             ^
1 warning and 1 error generated.

再現方法 | To Reproduce

try to build OpenSiv3D with -std=c++20

ビルド環境 | Develop environment (please complete the following information):

• OS: nixos (linux)
• 開発環境 | IDE: compiler: llvm-18.1

備考 | Additional context