[Bug libstdc++/115481] HAVE_* for long double math functions wrong for avrlibc (target AVR)

[dv at vollmann dot ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115481

--- Comment #7 from dv at vollmann dot ch ---
On 7/23/24 11:19, redi at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115481
> 
> --- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> Oh it looks like 2.2.0 is *very* new (but 2.1.0 is quite old so Fedora is quite
> outdated).

Debian stable also ships 2.0.0 ...
I believe libstdc++ should at least build on top of 2.0.0.
And I think the linker error that happens with my patch
(<https://gcc.gnu.org/pipermail/gcc-patches/2024-June/654980.html>)
also should not happen with 2.0.0.

I think not providing ::*f, ::*l, std::*f and std::*l for 2.0.0
and not providing ::*l and std::*l for 2.1.0 is ok.

   Detlef