https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78097 --- Comment #1 from Eric <edeveaud at pasteur dot fr> --- oops of course find /exe/gcc/4.9.4 -type l -name \*.so | xargs ldd | grep libgcc_s.so should be read find /exe/gcc/6.0.2 -type l -name \*.so | xargs ldd | grep libgcc_s.so