https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108143
--- Comment #10 from Gaius Mulley <gaius at gcc dot gnu.org> --- Created attachment 55917 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55917&action=edit Work in progress fix Here is a patch set (which needs some tidying up). It introduces a configure for LONGREAL as float128 when targetting ppc64le (or hosting on ppc64le). So far with this patch I've seen zero regression failures on gcc120 (ppc64le gnu-linux), (aarch64 gnu-linux) and (x86_64 gnu-linux) albeit I had to choose a git master from a few weeks back for aarch64 and x86_64 (still trying to understand why). Nevertheless I'm posting the patch here as a work in progress.