cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dlfcn/dladdr.c -o dlfcn/dladdr -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
dlfcn/dladdr.c:5:34: error: unknown type name 'Dl_info_t'
    5 | int (*foo)(const void *restrict, Dl_info_t *restrict) = dladdr;
      |                                  ^
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.