--- /usr/portage/sys-libs/libstdc++-v3/libstdc++-v3-3.3.6.ebuild	2009-10-23 21:36:42.000000000 +0200
+++ /usr/local/portage/sys-libs/libstdc++-v3/libstdc++-v3-3.3.6.ebuild	2010-09-03 00:24:09.620086654 +0200
@@ -149,6 +149,7 @@
 		--disable-checking \
 		--enable-cstdio=stdio \
 		--enable-__cxa_atexit \
+		--enable-symvers=gnu \
 		$(use_enable multilib) \
 		$(use_enable nls) \
 		$(use_with !nls included-gettext) \