P2: Important Building qtwebengine with LLVM 17 fails, as such:
In file included from /var/tmp/portage/dev-qt/qtwebengine-5.15.12_p20240122/work/qtwebengine-5.15.12_p20240122/src/3rdparty/ninja/src/build.cc:15: /var/tmp/portage/dev-qt/qtwebengine-5.15.12_p20240122/work/qtwebengine-5.15.12_p20240122/src/3rdparty/ninja/src/build.h:181:3: error: no template named 'auto_ptr' 181 | auto_ptr<CommandRunner> command_runner_; | ^ /var/tmp/portage/dev-qt/qtwebengine-5.15.12_p20240122/work/qtwebengine-5.15.12_p20240122/src/3rdparty/ninja/src/build.cc:444:29: error: use of undeclared identifier 'mem_fun'; did you mean 'mem_fn'? 444 | if (find_if(begin, end, mem_fun(&Node::dirty)) == end) { | ^~~~~~~ | mem_fn /usr/include/c++/v1/__functional/mem_fn.h:51:1: note: 'mem_fn' declared here 51 | mem_fn(_Rp _Tp::* __pm) _NOEXCEPT | ^ 2 errors generated.
This is quite an issue for me, personally, as my system actually has several things that depend on updating this component.