cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations search/tsearch.c -o search/tsearch -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
search/tsearch.c:11:1: error: unknown type name 'posix_tnode'
 posix_tnode *(*foo)(const void *, posix_tnode **, int(*)(const void *, const void *)) = tsearch;
 ^~~~~~~~~~~
search/tsearch.c:11:35: error: unknown type name 'posix_tnode'
 posix_tnode *(*foo)(const void *, posix_tnode **, int(*)(const void *, const void *)) = tsearch;
                                   ^~~~~~~~~~~