nl_langinfo [test $ac_use_included_regex = yes]
stdbool [test $ac_use_included_regex = yes]
stdint [test $ac_use_included_regex = yes]
-strcase [test $ac_use_included_regex = yes]
wchar [test $ac_use_included_regex = yes]
wcrtomb [test $ac_use_included_regex = yes]
wctype-h [test $ac_use_included_regex = yes]