--- a/net-fs/samba/samba-4.19.0.ebuild	
+++ a/net-fs/samba/samba-4.19.0.ebuild	
@@ -159,6 +159,8 @@ pkg_setup() {
 
 	python-single-r1_pkg_setup
 
+	append-ldflags -Wl,--undefined-version
+
 	SHAREDMODS="$(usev !snapper '!')vfs_snapper"
 	if use cluster ; then
 		SHAREDMODS+=",idmap_rid,idmap_tdb2,idmap_ad"