I'd like to suggest to remove the sysctl function from glibc in rawhide
this week.  It's been deprecated upstream, but I think it's more
convenient to us to remove it in a mid-year release cycle, separate from
the GCC rebase.

On some architectures (notable aarch64), the sysctl function is just a
stub because the kernel does not support the system call.  This requires
the right magic configure checks (autoconf handles it correctly, others
do not).  Some packages also have kernel (header) versions which are
quite broken (see openrdate).  Removing this function should trigger the
appropriate fallback paths in those packages.

The change would only affect compiling and linking new binaries.
Existing binaries will continue to run, subject to the availability of
the system call.

Comments?

Thanks,
Florian
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