Index: configure.ac
===================================================================
--- configure.ac
+++ configure.ac	2008-07-08 07:19:39.000000000 +0200
@@ -224,6 +224,7 @@
 
 AM_CONDITIONAL(HAVE_LDAP, test x$ldap = xtrue)
 AM_CONDITIONAL(HAVE_PASSWD, test x$flatfile = xtrue)
+AC_SUBST(LBFLAGS)
 
 AC_CONFIG_FILES(Makefile
 doc/Makefile