[Bug target/84829] -mieee-fp causes to link with -lieee but that is no longer available

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84829

--- Comment #6 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> -mieee-fp does affect code generation on x86 and m68k, but I don't see how
> it is related to any changes in glibc.
> And besides code generation changes it affects whether -lieee is linked in
> or not.

It matters from the users' point of view.  I think it's better to give them a
build error when they use unsupported functionality, rather than giving the
wrong results at run time.  The overloaded nature of -mieee-fp makes this
difficult to achieve, though.