clang -O2  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations search/posix_tnode.c -o search/posix_tnode -D_POSIX_C_SOURCE=202405L  -lm  -lintl
search/posix_tnode.c:8:1: error: unknown type name 'posix_tnode'
posix_tnode* foo;
^
1 error generated.