Refusing to build binutils when the system version is newer

[ocaisa]

In easybuilders/easybuild-easyconfigs#16235 it would seem that the GCC build is failing because the version of binutils using to build glibc is too new compared to the binutils being used in the toolchain. In such a case it is probably best to recommend that the user consider filtering out binutils from the dependencies (at least for that toolchain and any others that use it as a base)

[ocaisa]

This could be done as part of the easyblock, where we might refuse to build binutils in this scenario or at least make a BFW warning about the potential issues

[boegel]

I wouldn't flat out refuse (or at least not without a "trust me, I know what I'm doing" option to opt out), but a big fat warning (ideally with a pointer to a dedicated page/section in the docs) makes sense