Building from source fails on Fedora 40

[silvigon]

Was able to reproduce this on the live environment of a Fedora 40 image, where building according to the instructions produces the following error:

In file included from /home/liveuser/Ripes/external/VSRTL/external/cereal/include/cereal/archives/json.hpp:56,
                 from /home/liveuser/Ripes/external/VSRTL/graphics/vsrtl_componentgraphic.cpp:14:
/home/liveuser/Ripes/external/VSRTL/external/cereal/include/cereal/external/rapidjson/document.h: In member function ‘rapidjson::GenericStringRef<CharType>& rapidjson::GenericStringRef<CharType>::operator=(const rapidjson::GenericStringRef<CharType>&)’:
/home/liveuser/Ripes/external/VSRTL/external/cereal/include/cereal/external/rapidjson/document.h:319:82: error: assignment of read-only member ‘rapidjson::GenericStringRef<CharType>::length’
  319 |     GenericStringRef& operator=(const GenericStringRef& rhs) { s = rhs.s; length = rhs.length; }
      |                                                                           ~~~~~~~^~~~~~~~~~~~
make[2]: *** [external/VSRTL/graphics/CMakeFiles/vsrtl_gfx_lib.dir/build.make:137: external/VSRTL/graphics/CMakeFiles/vsrtl_gfx_lib.dir/vsrtl_componentgraphic.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:990: external/VSRTL/graphics/CMakeFiles/vsrtl_gfx_lib.dir/all] Error 2
make: *** [Makefile:136: all] Error 2