[Bug libstdc++/115907] Libstdc++ and GCC itself should avoid glibc above 2.34 dependency

[unlvsur at live dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115907

--- Comment #31 from cqwrteur <unlvsur at live dot com> ---
> Why not?  It has to pull libraries and headers from somewhere (note that I
> do not know what "crossback" means).
> 
> Note that there is desire to not predefine _GNU_SOURCE in C++ modes.  See
> the PRs Andrew referenced.


https://github.com/trcrsired/gcc-releases/releases

This one
x86_64-pc-linux-gnu.tar.xz in 20240707-x86_64-w64-mingw32

The compiler builds on arch linux. runs on windows. produces binaries works on
linux again. This is crossback compilation.