Re: [power-ieee128] RFH: LTO broken

[Thomas Koenig via Gcc-patches]

Hi Jakub,

So, the following patch adds -fbuilding-libgfortran option and uses
it together with TARGET_GLIBC_M* checks to decide whether to use
libquadmath APIs (for the IEEE quad kind=16 if -fbuilding-libgfortran
and not glibc or glibc is older than 2.32) or glibc 2.32 APIs
(otherwise).  This way, libgfortran uses solely the libquadmath APIs
on glibc < 2.32 and __*ieee128 APIs on glibc 2.32, while user code
always uses the latter.

Ok for power-ieee128?

OK!

Best regards

        Thomas