AS_IF([test $ac_cv_redefine_hash_string = yes],[
AC_DEFINE(REDEFINE_HASH_STRING, 1, [if hash<string> needs to be defined])
])
AS_IF([test $ac_cv_redefine_hash_string = yes],[
AC_DEFINE(REDEFINE_HASH_STRING, 1, [if hash<string> needs to be defined])
])