Sorry, malformed copy/paste. It killed the sequence "A and made an ä out of it.
+#undef LINK_LIBGCC_SPEC
+#define LINK_LIBGCC_SPEC "%{m64:" "-R /usr/gcc/4.8/lib/"ARCH64_SUBDIR":/usr/gcc/lib/"ARCH64_SUBDIR" %D" "}%{!m64:" "-R /usr/gcc/4.8/lib:/usr/gcc/lib %D" "}"