AC_DEFUN([PANDORA_WARNINGS],[
m4_define([PW_LESS_WARNINGS],[no])
m4_define([PW_WARN_ALWAYS_ON],[no])
- m4_foreach_w([pw_arg],$@,[
+ ifdef([m4_define],,[define([m4_define], defn([define]))])
+ ifdef([m4_undefine],,[define([m4_undefine], defn([undefine]))])
+ m4_foreach([pw_arg],$*,[
m4_case(pw_arg,
[less-warnings],[
m4_undefine([PW_LESS_WARNINGS])