https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Luke Dashjr from comment #11) > Simply upgrading to GCC 8.2.0 failed due to the multiple-definition of > __x86_return_thunk, so I successfully built only the C compiler with the > non-thunking defaults; from there, I rebuilt glibc again without thunking, > then rebuilt the full GCC with thunking re-enabled, and glibc again with > thunking re-enabled. > > My most recent issue was with building distcc and libiberty.a, which I > solved by removing binutils-libs and installing it again from scratch (a > simple rebuild failed due to the multiple-definition of __x86_return_thunk > in the existing library). Where did you get your glibc?
