tuliom added a comment.

In D139450#3981486 <https://reviews.llvm.org/D139450#3981486>, @qiucf wrote:

> Thanks for the patch! But does libc++ support to be built with 
> `-mabi=ieeelongdouble` now?

@qiucf libc++ can be built with `-mabi=ieeelongdouble`, but it supports only a 
single long double format, i.e. if it's built with `-mabi=ieeelongdouble`, it 
won't support IBM double-double and vice versa.
This is already being used in Fedora Rawhide at the moment.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D139450/new/

https://reviews.llvm.org/D139450

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