https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100373
--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Richard Biener from comment #2) > Doesn't reproduce on x86_64-linux with bootstrapping with in-tree mpfr 4.1.0 it might well be some corner-case, but Darwin is PIC by default, so it might be worth trying --with-pic ? failing that, I'll have to figure out some way to debug it... (the CPU was not, in the end relevant, it was more that on the older machines I hadn't updated GMP & friends to newer versions.)