https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119244
--- Comment #20 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #18) > I think s390x-linux is similar to aarch64-linux here, neither has > libquadmath support. However, libquadmath works fine on aarch64-darwin, so it is a possible --as-needed solution for the C23 interfaces (that is what I'm doing at the moment) > Just long double is always IEEE quad on aarch64-linux and on s390x-linux it > is configurable, one can choose between IEEE double and IEEE quad and for > the latter needs some glibc support (though years older than the *f128 APIs). I'll extend my logic to match what you put in comment #16, it would be good to cover the case where long double == 128b ieee754.
