[Bug target/64008] [SH] sh4-linux configured compiler rejects -m4-nofpu

[kkojima at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64008

--- Comment #1 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #0)
> Kaz, do you have any idea why these SUPPORT_SH* macros are needed?  Why
> isn't just every CPU/FPU type marked as supported?

I have no idea for those macros.  Some historical reason?