cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wchar/wcscasecmp_l.c -o wchar/wcscasecmp_l -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
wchar/wcscasecmp_l.c:5:58: error: 'wcscasecmp_l' undeclared here (not in a function); did you mean 'wcscasecmp'?
 int (*foo)(const wchar_t *, const wchar_t *, locale_t) = wcscasecmp_l;
                                                          ^~~~~~~~~~~~
                                                          wcscasecmp