--- /dev/null
+--- drizzle/m4/readline.m4~ 2008-12-01 23:04:06.000000000 +0200
++++ drizzle/m4/readline.m4 2008-12-02 00:15:21.314639769 +0200
+@@ -33,12 +33,14 @@
+ ],
+ [
+ mysql_cv_new_rl_interface=yes
+- AC_DEFINE_UNQUOTED([USE_NEW_READLINE_INTERFACE], [1],
+- [used new readline interface (are rl_completion_func_t and rl_compentry_func_t defined)])
+ ],
+ [mysql_cv_new_rl_interface=no]
+ )
+ )
++ if test "$mysql_cv_new_rl_interface" = "yes"; then
++ AC_DEFINE_UNQUOTED([USE_NEW_READLINE_INTERFACE], [1],
++ [used new readline interface (are rl_completion_func_t and rl_compentry_func_t defined)])
++ fi
+ CFLAGS="${save_CFLAGS}"
+ ])
+