cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations search/tfind.c -o search/tfind -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
search/tfind.c:11:1: error: unknown type name 'posix_tnode'
   11 | posix_tnode *(*foo)(const void *, posix_tnode *const *, int(*)(const void *, const void *)) = tfind;
      | ^
search/tfind.c:11:35: error: unknown type name 'posix_tnode'
   11 | posix_tnode *(*foo)(const void *, posix_tnode *const *, int(*)(const void *, const void *)) = tfind;
      |                                   ^
2 errors generated.