so I chose the llvm toolchain by https://github.com/mstorsjo/llvm-mingw/releases
as in my previous experiment I added clang.exe and try to compile, it gave the message clang-18: Invalid argument
so I added clang-18.exe and try again, this time it complained about missing dlls, I started adding dlls expecting 100+ dlls but it only required 4 dlls wow!, two exe's plus four dlls, clang.exe, clang-18.exe, libclang-cpp.dll, libc++.dll, libLLVM.dll and libunwind.dll
I think that it's worth testing and see if there are any issues, the performance of the produced exe seems to be better than with the previous toolchain
now if we could only build FB with this toolchain
I tried, but it chokes when it tries to link to libgcc which is absent