ppc64el: IEEE 128-bit long double instead of IBM 128-bit long double
For the opening of trixie, both GCC and LLVM are prepared to change the
long double ABI from IBM 128-bit long double to IEEE 128-bit long
double. That is a change that other distros did long ago.
For reference, please see
https://developers.redhat.com/articles/2023/05/16/benefits-fedora-38-long-double-transition-ppc64le#
I'm proposing to do this "transition" inline, doing just no-change
binNMUs in most cases. long double in the ABI is not that common.
Afaiu, Fedora and OpenSUSE did it this way, and also Ubuntu is doing it
currently this way. Ubuntu also has a (maybe incomplete) list of
packages, which require binNMUs.
Matthias
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