[Bug 2112391] Re: Enable Rust compiler(s) for using IEEE long-double-format on ppc64el starting with 25.10

[Frank Heimes]

Hi Zixing, yes, I see that the general support for that is in.
But it seems to be flagged as "nightly-only experimental" - but I'm not sure what that means.

The idea is to use that "by default" on ppc64el starting with 25.10.
(See also https://launchpad.net/ubuntu/+source/llvm-toolchain-19/1:19.1.7-5ubuntu1
"On ppc64el configure --with-long-double-format=ieee for upcoming distros")
That's where I am unsure if that is already the case.

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https://bugs.launchpad.net/bugs/2112391

Title:
  Enable Rust compiler(s) for using IEEE long-double-format on ppc64el
  starting with 25.10

Status in The Ubuntu-power-systems project:
  New
Status in rustc package in Ubuntu:
  New

Bug description:
  Starting with 25.10, the gcc defaults got changed to use IEEE 754 standard for 128-bit floats:
  LP#2072487 gcc: investigate if we should enable IEEE 754 standard 128-bit floats by default
  This now needs to be done for the Rust compiler(s) as well.

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