cc -O2 -pipe -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dlfcn/dladdr.c -o dlfcn/dladdr -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lstdthreads -lcrypt
dlfcn/dladdr.c:5:34: error: unknown type name 'Dl_info_t'; did you mean '__ino_t'?
    5 | int (*foo)(const void *restrict, Dl_info_t *restrict) = dladdr;
      |                                  ^~~~~~~~~
      |                                  __ino_t
/usr/include/sys/_types.h:124:20: note: '__ino_t' declared here
  124 | typedef __uint64_t      __ino_t;        /* inode number */
      |                         ^
dlfcn/dladdr.c:5:57: error: use of undeclared identifier 'dladdr'
    5 | int (*foo)(const void *restrict, Dl_info_t *restrict) = dladdr;
      |                                                         ^
2 errors generated.