Index: m4/ldap.m4
===================================================================
--- m4/ldap.m4
+++ m4/ldap.m4
@@ -46,14 +46,14 @@
 #else
 #include <ldap.h>
 #endif
-],[ldap_open("foobar",1234);],
+],[ldap_open("foobar",1234);ber_alloc();],
                 [gnupg_cv_func_ldap_init=yes],[gnupg_cv_func_ldap_init=no])
     AC_MSG_RESULT([$gnupg_cv_func_ldap_init])
 
     if test $gnupg_cv_func_ldap_init = no; then
       AC_MSG_CHECKING([whether I can make LDAP be sane with lber.h])
       AC_TRY_LINK([#include <lber.h>
-#include <ldap.h>],[ldap_open("foobar",1234);],
+#include <ldap.h>],[ldap_open("foobar",1234);ber_alloc();],
          [gnupg_cv_func_ldaplber_init=yes],[gnupg_cv_func_ldaplber_init=no])
       AC_MSG_RESULT([$gnupg_cv_func_ldaplber_init])
     fi