wolfssl-5.5.3 can not use mp_int

Question

i have configured using commond ./configure --enable-debug --disable-shared CFLAGS="-DWOLFSSL_PUBLIC_MP" && make && sudo make install referring to enter link description here

1: https://github.com/wolfSSL/wolfssl-examples/blob/master/ecc/ecc-params.c,but it didnot work,maybe is it the problem of my raspberryPi4? this is the test code

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdint.h>
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/wolfcrypt/ecc.h>
#include <wolfssl/wolfcrypt/sp_int.h>
int test() {
    #if defined(HAVAE_ECC)&&defined(WOLFSSL_PUBLIC_MP)
    mp_int p;
    mp_init(&p);
    ecc_key key;
    int ret;
    WC_RNG rng;
    wc_ecc_init(&key);
    wc_InitRng(&rng);
    int curveId = ECC_SECP521R1;
    int keySize = wc_ecc_get_curve_size_from_id(curveId);
    ret = wc_ecc_make_key_ex(&rng, keySize, &key, curveId);
    if (ret != MP_OKAY) {
    // error handling
    }
    char* str;
    int ret1 = mp_toradix(key.k, str, 10);
    cout << str << endl;
    #endif
}
int main() {
    test();
}

i used g++ file.cpp -lwolfssl -o file. it told me that undefined referrence sp_init();

enter image description here