Pretty clear that its a dual abi issue, libfplll discovers your system libqd and decides to link against it. But your system is new enough to use the new cxx11 abi, whereas the Sage-built gcc is not. Hence linking fails with undefined std::__cxx11 symbols, as expected.
This is probably going to become a big issue for us soon when more distros switch to the new cxx11 abi. I've opened http://trac.sagemath.org/ticket/20350 A workaround for now would be to uninstall your libqd-devel package while compiling libfplll, or prevent Sage from building its own gcc (you probably don't have gfortran installed) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
