--- /usr/portage/net-fs/samba/samba-3.4.8.ebuild	2010-08-16 03:08:49.000000000 +0200
+++ /usr/portage/net-fs/samba/samba-3.4.8-r1.ebuild	2010-08-30 23:22:02.243982070 +0200
@@ -176,6 +176,7 @@
 		$(use_with aio aio-support) \
 		--with-sendfile-support \
 		$(use_with winbind) \
+		$(use_with winbind shared-modules=idmap_rid,idmap_hash) \
 		--without-included-popt \
 		--without-included-iniparser
 }