clang -O2  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations libintl/dcgettext_l.c -o libintl/dcgettext_l -D_POSIX_C_SOURCE=202405L  -lm  -lintl
libintl/dcgettext_l.c:5:47: error: type specifier missing, defaults to 'int' [-Werror,-Wimplicit-int]
char *(*foo)(const char *, const char *, int, locale_t) = dcgettext_l;
                                              ^
libintl/dcgettext_l.c:5:59: error: use of undeclared identifier 'dcgettext_l'; did you mean 'dcgettext'?
char *(*foo)(const char *, const char *, int, locale_t) = dcgettext_l;
                                                          ^~~~~~~~~~~
                                                          dcgettext
/usr/include/libintl.h:56:7: note: 'dcgettext' declared here
char *dcgettext(const char *, const char *, int) __format_arg(2);
      ^
libintl/dcgettext_l.c:5:9: error: incompatible pointer types initializing 'char *(*)(const char *, const char *, int, int)' with an expression of type 'char *(const char *, const char *, int)' [-Werror,-Wincompatible-pointer-types]
char *(*foo)(const char *, const char *, int, locale_t) = dcgettext_l;
        ^                                                 ~~~~~~~~~~~
3 errors generated.