The last bugid 82686 no longer applies really.
Thus https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85440 I may be making noises in the mail list(s) but I really am trying to figure out the mess. If older powerpc type hardware just does not work then such is life and I will go fetch an IBM Power server from somewhere and say goodbye to the old ppc970 platform. However it would be nice to at least look at the issue before kicking it aside as a waste of time. I'll have an old sparc system up in a rack for debian shortly. I won't hold my breath to see libquadmath work there but I can tell you the old old sources actually come from Sun Solaris and the OpenSolaris sources and very very old stuff from SunPro. Should be portable. Dennis