Build error for master branch

[Zogoo]

After I updated my code with the latest master branch update (openssl 1.1.1f and nginx 19.0.1).
I cannot build my project. Does somebody know what is the reason?
OS: OSX Mojae 10.14.6
Compiler: GCC and CLANG

Here is the error message I have got.

Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: /Users/user/ngx_mruby/mruby/build/test/lib/libmruby.a(nist_kw.o) has no symbols
CC    mrbgems/mruby-bin-mirb/tools/mirb/mirb.c -> build/host/mrbgems/mruby-bin-mirb/tools/mirb/mirb.o
LD    build/host/bin/mirb
Undefined symbols for architecture x86_64:
  "_ASN1_BIT_STRING_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_BIT_STRING_new", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_BIT_STRING_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_GENERALIZEDTIME_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_INTEGER_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_NULL_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_NULL_new", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_OBJECT_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_set_oid in libmruby.a(ossl_x509attr.o)
  "_ASN1_STRING_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_STRING_new", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_STRING_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_TIME_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_TYPE_free", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_ASN1_TYPE_free in libmruby.a(ossl_asn1.o)
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_ASN1_TYPE_get", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_ASN1_TYPE_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_UTCTIME_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_object_size", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_asn1cons_to_der in libmruby.a(ossl_asn1.o)
  "_ASN1_put_eoc", referenced from:
      _ossl_asn1cons_to_der in libmruby.a(ossl_asn1.o)
  "_ASN1_put_object", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_asn1cons_to_der in libmruby.a(ossl_asn1.o)
  "_BIO_ctrl", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
      _ossl_membio2str0 in libmruby.a(ossl_bio.o)
      _ossl_protect_membio2str in libmruby.a(ossl_bio.o)
      _ossl_membio2str in libmruby.a(ossl_bio.o)
  "_BIO_free", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
      _ossl_membio2str in libmruby.a(ossl_bio.o)
      ...
  "_BIO_new", referenced from:
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_BIO_new_mem_buf", referenced from:
      _ossl_obj2bio in libmruby.a(ossl_bio.o)
  "_BIO_s_mem", referenced from:
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_BN_bin2bn", referenced from:
      _ossl_bn_initialize in libmruby.a(ossl_bn.o)
  "_BN_bn2bin", referenced from:
      _mrb_ossl_bn_to_s in libmruby.a(ossl_bn.o)
  "_BN_clear_free", referenced from:
      _ossl_bn_free in libmruby.a(ossl_bn.o)
  "_BN_dec2bn", referenced from:
      _GetBNPtr in libmruby.a(ossl_bn.o)
  "_BN_dup", referenced from:
      _ossl_bn_new in libmruby.a(ossl_bn.o)
  "_BN_new", referenced from:
      _ossl_bn_new in libmruby.a(ossl_bn.o)
      _ossl_bn_initialize in libmruby.a(ossl_bn.o)
  "_BN_num_bits", referenced from:
      _mrb_ossl_bn_to_s in libmruby.a(ossl_bn.o)
  "_BN_set_negative", referenced from:
      _ossl_bn_initialize in libmruby.a(ossl_bn.o)
  "_BN_to_ASN1_INTEGER", referenced from:
      _num_to_asn1integer in libmruby.a(ossl_asn1.o)
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_CONF_get1_default_config_file", referenced from:
      _Init_ossl_config in libmruby.a(ossl_config.o)
  "_CRYPTO_free", referenced from:
      _Init_ossl_config in libmruby.a(ossl_config.o)
      _ossl_x509extfactory_free in libmruby.a(ossl_x509ext.o)
  "_CRYPTO_malloc", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_x509extfactory_initialize in libmruby.a(ossl_x509ext.o)
  "_ERR_clear_error", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_ERR_error_string", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_ERR_get_error", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_ERR_peek_error", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_ERR_reason_error_string", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_EVP_DigestFinal_ex", referenced from:
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
  "_EVP_DigestInit_ex", referenced from:
      _ctx_new in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_init in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_DigestUpdate", referenced from:
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_CTX_free", referenced from:
      _ossl_digest_free in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_CTX_md", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _ossl_evp_get_digestbyname in libmruby.a(ossl_pkey.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_CTX_new", referenced from:
      _ctx_new in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_init in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_size", referenced from:
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
  "_EVP_PKEY_assign", referenced from:
      _rsa_instance in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_base_id", referenced from:
      _ossl_pkey_new in libmruby.a(ossl_pkey.o)
      _ossl_rsa_new in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_rsa_is_private in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_n in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_e in libmruby.a(ossl_pkey_rsa.o)
      ...
  "_EVP_PKEY_free", referenced from:
      _ossl_evp_pkey_free in libmruby.a(ossl_pkey.o)
      _rsa_instance in libmruby.a(ossl_pkey_rsa.o)
      _ossl_evp_pkey_free in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_get0_RSA", referenced from:
      _mrb_ossl_rsa_is_private in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_n in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_e in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_new", referenced from:
      _ossl_pkey_init in libmruby.a(ossl_pkey.o)
      _ossl_pkey_alloc in libmruby.a(ossl_pkey.o)
      _rsa_instance in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_size", referenced from:
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_SignFinal", referenced from:
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_get_digestbyname", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ctx_new in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_init in libmruby.a(ossl_digest.o)
  "_NCONF_free", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_NCONF_load_bio", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
  "_NCONF_new", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
  "_OBJ_ln2nid", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_OBJ_nid2sn", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_get_oid in libmruby.a(ossl_x509attr.o)
  "_OBJ_obj2nid", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_get_oid in libmruby.a(ossl_x509attr.o)
  "_OBJ_sn2nid", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_OBJ_txt2obj", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_set_oid in libmruby.a(ossl_x509attr.o)
  "_PEM_read_bio_RSAPrivateKey", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_read_bio_RSAPublicKey", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_read_bio_RSA_PUBKEY", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_read_bio_X509", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
  "_PEM_read_bio_X509_REQ", referenced from:
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
  "_PEM_write_bio_RSAPrivateKey", referenced from:
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_write_bio_RSA_PUBKEY", referenced from:
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_write_bio_X509", referenced from:
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
  "_RSAPublicKey_dup", referenced from:
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_free", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_generate_key", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_get0_factors", referenced from:
      _mrb_ossl_rsa_is_private in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_get0_key", referenced from:
      _ossl_rsa_get_n in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_e in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_new", referenced from:
      _ossl_rsa_new in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_X509V3_EXT_nconf_nid", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_X509V3_set_ctx", referenced from:
      _ossl_x509extfactory_initialize in libmruby.a(ossl_x509ext.o)
  "_X509V3_set_nconf", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_X509_ATTRIBUTE_count", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_create_by_OBJ", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_free", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
      _ossl_x509attr_free in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_get0_object", referenced from:
      _ossl_x509attr_get_oid in libmruby.a(ossl_x509attr.o)
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_new", referenced from:
      _ossl_x509attr_initialize in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_set1_data", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_set1_object", referenced from:
      _ossl_x509attr_set_oid in libmruby.a(ossl_x509attr.o)
  "_X509_EXTENSION_free", referenced from:
      _ossl_x509ext_free in libmruby.a(ossl_x509ext.o)
  "_X509_EXTENSION_new", referenced from:
      _ossl_x509ext_init in libmruby.a(ossl_x509ext.o)
  "_X509_NAME_add_entry_by_txt", referenced from:
      _ossl_x509name_add_entry in libmruby.a(ossl_x509name.o)
  "_X509_NAME_free", referenced from:
      _ossl_x509name_free in libmruby.a(ossl_x509name.o)
  "_X509_NAME_new", referenced from:
      _ossl_x509name_initialize in libmruby.a(ossl_x509name.o)
  "_X509_REQ_add1_attr", referenced from:
      _ossl_x509req_add_attribute in libmruby.a(ossl_x509req.o)
  "_X509_REQ_free", referenced from:
      _ossl_x509req_free in libmruby.a(ossl_x509req.o)
  "_X509_REQ_new", referenced from:
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
  "_X509_REQ_set_pubkey", referenced from:
      _ossl_x509req_set_public_key in libmruby.a(ossl_x509req.o)
  "_X509_REQ_set_subject_name", referenced from:
      _ossl_x509req_set_subject in libmruby.a(ossl_x509req.o)
  "_X509_REQ_set_version", referenced from:
      _ossl_x509req_set_version in libmruby.a(ossl_x509req.o)
  "_X509_REQ_sign", referenced from:
      _ossl_x509req_sign in libmruby.a(ossl_x509req.o)
  "_X509_free", referenced from:
      _ossl_x509_free in libmruby.a(ossl_x509cert.o)
  "_X509_new", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
  "_d2i_RSAPrivateKey_bio", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_d2i_RSAPublicKey_bio", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_d2i_RSA_PUBKEY_bio", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_d2i_X509_ATTRIBUTE", referenced from:
      _ossl_x509attr_initialize in libmruby.a(ossl_x509attr.o)
  "_d2i_X509_NAME", referenced from:
      _ossl_x509name_initialize in libmruby.a(ossl_x509name.o)
  "_d2i_X509_REQ_bio", referenced from:
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
  "_d2i_X509_bio", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
  "_i2d_ASN1_TYPE", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
  "_i2d_X509_EXTENSION", referenced from:
      _ossl_x509ext_to_der in libmruby.a(ossl_x509ext.o)
  "_i2d_X509_REQ", referenced from:
      _ossl_x509req_to_der in libmruby.a(ossl_x509req.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Undefined symbols for architecture x86_64:
  "_ASN1_BIT_STRING_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_BIT_STRING_new", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_BIT_STRING_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_GENERALIZEDTIME_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_INTEGER_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_NULL_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_NULL_new", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_OBJECT_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_set_oid in libmruby.a(ossl_x509attr.o)
  "_ASN1_STRING_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_STRING_new", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_STRING_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_TIME_free", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_TYPE_free", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_ASN1_TYPE_free in libmruby.a(ossl_asn1.o)
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_ASN1_TYPE_get", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_ASN1_TYPE_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_UTCTIME_set", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_ASN1_object_size", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_asn1cons_to_der in libmruby.a(ossl_asn1.o)
  "_ASN1_put_eoc", referenced from:
      _ossl_asn1cons_to_der in libmruby.a(ossl_asn1.o)
  "_ASN1_put_object", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_asn1cons_to_der in libmruby.a(ossl_asn1.o)
  "_BIO_ctrl", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
      _ossl_membio2str0 in libmruby.a(ossl_bio.o)
      _ossl_protect_membio2str in libmruby.a(ossl_bio.o)
      _ossl_membio2str in libmruby.a(ossl_bio.o)
  "_BIO_free", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
      _ossl_membio2str in libmruby.a(ossl_bio.o)
      ...
  "_BIO_new", referenced from:
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_BIO_new_mem_buf", referenced from:
      _ossl_obj2bio in libmruby.a(ossl_bio.o)
  "_BIO_s_mem", referenced from:
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_BN_bin2bn", referenced from:
      _ossl_bn_initialize in libmruby.a(ossl_bn.o)
  "_BN_bn2bin", referenced from:
      _mrb_ossl_bn_to_s in libmruby.a(ossl_bn.o)
  "_BN_clear_free", referenced from:
      _ossl_bn_free in libmruby.a(ossl_bn.o)
  "_BN_dec2bn", referenced from:
      _GetBNPtr in libmruby.a(ossl_bn.o)
  "_BN_dup", referenced from:
      _ossl_bn_new in libmruby.a(ossl_bn.o)
  "_BN_new", referenced from:
      _ossl_bn_new in libmruby.a(ossl_bn.o)
      _ossl_bn_initialize in libmruby.a(ossl_bn.o)
  "_BN_num_bits", referenced from:
      _mrb_ossl_bn_to_s in libmruby.a(ossl_bn.o)
  "_BN_set_negative", referenced from:
      _ossl_bn_initialize in libmruby.a(ossl_bn.o)
  "_BN_to_ASN1_INTEGER", referenced from:
      _num_to_asn1integer in libmruby.a(ossl_asn1.o)
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
  "_CONF_get1_default_config_file", referenced from:
      _Init_ossl_config in libmruby.a(ossl_config.o)
  "_CRYPTO_free", referenced from:
      _Init_ossl_config in libmruby.a(ossl_config.o)
      _ossl_x509extfactory_free in libmruby.a(ossl_x509ext.o)
  "_CRYPTO_malloc", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
      _ossl_x509extfactory_initialize in libmruby.a(ossl_x509ext.o)
  "_ERR_clear_error", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_ERR_error_string", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_ERR_get_error", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_ERR_peek_error", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_ERR_reason_error_string", referenced from:
      _ossl_fetch_error in libmruby.a(ossl.o)
  "_EVP_DigestFinal_ex", referenced from:
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
  "_EVP_DigestInit_ex", referenced from:
      _ctx_new in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_init in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_DigestUpdate", referenced from:
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_CTX_free", referenced from:
      _ossl_digest_free in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_CTX_md", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _ossl_evp_get_digestbyname in libmruby.a(ossl_pkey.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_CTX_new", referenced from:
      _ctx_new in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_init in libmruby.a(ossl_digest.o)
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_MD_size", referenced from:
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
  "_EVP_PKEY_assign", referenced from:
      _rsa_instance in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_base_id", referenced from:
      _ossl_pkey_new in libmruby.a(ossl_pkey.o)
      _ossl_rsa_new in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_rsa_is_private in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_n in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_e in libmruby.a(ossl_pkey_rsa.o)
      ...
  "_EVP_PKEY_free", referenced from:
      _ossl_evp_pkey_free in libmruby.a(ossl_pkey.o)
      _rsa_instance in libmruby.a(ossl_pkey_rsa.o)
      _ossl_evp_pkey_free in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_get0_RSA", referenced from:
      _mrb_ossl_rsa_is_private in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_n in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_e in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_new", referenced from:
      _ossl_pkey_init in libmruby.a(ossl_pkey.o)
      _ossl_pkey_alloc in libmruby.a(ossl_pkey.o)
      _rsa_instance in libmruby.a(ossl_pkey_rsa.o)
  "_EVP_PKEY_size", referenced from:
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_SignFinal", referenced from:
      _mrb_ossl_pkey_sign in libmruby.a(ossl_pkey.o)
  "_EVP_get_digestbyname", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ctx_new in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_digest in libmruby.a(ossl_digest.o)
      _mrb_ossl_digest_sha256_init in libmruby.a(ossl_digest.o)
  "_NCONF_free", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_NCONF_load_bio", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
  "_NCONF_new", referenced from:
      _GetConfigPtr in libmruby.a(ossl_config.o)
  "_OBJ_ln2nid", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_OBJ_nid2sn", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_get_oid in libmruby.a(ossl_x509attr.o)
  "_OBJ_obj2nid", referenced from:
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_get_oid in libmruby.a(ossl_x509attr.o)
  "_OBJ_sn2nid", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_OBJ_txt2obj", referenced from:
      _ossl_asn1_get_asn1type in libmruby.a(ossl_asn1.o)
      _GetDigestPtr in libmruby.a(ossl_digest.o)
      _ossl_x509attr_set_oid in libmruby.a(ossl_x509attr.o)
  "_PEM_read_bio_RSAPrivateKey", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_read_bio_RSAPublicKey", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_read_bio_RSA_PUBKEY", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_read_bio_X509", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
  "_PEM_read_bio_X509_REQ", referenced from:
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
  "_PEM_write_bio_RSAPrivateKey", referenced from:
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_write_bio_RSA_PUBKEY", referenced from:
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_PEM_write_bio_X509", referenced from:
      _ossl_x509_to_pem in libmruby.a(ossl_x509cert.o)
  "_RSAPublicKey_dup", referenced from:
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_free", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_public_key in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_generate_key", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_get0_factors", referenced from:
      _mrb_ossl_rsa_is_private in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_export in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_get0_key", referenced from:
      _ossl_rsa_get_n in libmruby.a(ossl_pkey_rsa.o)
      _ossl_rsa_get_e in libmruby.a(ossl_pkey_rsa.o)
  "_RSA_new", referenced from:
      _ossl_rsa_new in libmruby.a(ossl_pkey_rsa.o)
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_X509V3_EXT_nconf_nid", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_X509V3_set_ctx", referenced from:
      _ossl_x509extfactory_initialize in libmruby.a(ossl_x509ext.o)
  "_X509V3_set_nconf", referenced from:
      _ossl_x509extfactory_create_ext in libmruby.a(ossl_x509ext.o)
  "_X509_ATTRIBUTE_count", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_create_by_OBJ", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_free", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
      _ossl_x509attr_free in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_get0_object", referenced from:
      _ossl_x509attr_get_oid in libmruby.a(ossl_x509attr.o)
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_new", referenced from:
      _ossl_x509attr_initialize in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_set1_data", referenced from:
      _ossl_x509attr_set_value in libmruby.a(ossl_x509attr.o)
  "_X509_ATTRIBUTE_set1_object", referenced from:
      _ossl_x509attr_set_oid in libmruby.a(ossl_x509attr.o)
  "_X509_EXTENSION_free", referenced from:
      _ossl_x509ext_free in libmruby.a(ossl_x509ext.o)
  "_X509_EXTENSION_new", referenced from:
      _ossl_x509ext_init in libmruby.a(ossl_x509ext.o)
  "_X509_NAME_add_entry_by_txt", referenced from:
      _ossl_x509name_add_entry in libmruby.a(ossl_x509name.o)
  "_X509_NAME_free", referenced from:
      _ossl_x509name_free in libmruby.a(ossl_x509name.o)
  "_X509_NAME_new", referenced from:
      _ossl_x509name_initialize in libmruby.a(ossl_x509name.o)
  "_X509_REQ_add1_attr", referenced from:
      _ossl_x509req_add_attribute in libmruby.a(ossl_x509req.o)
  "_X509_REQ_free", referenced from:
      _ossl_x509req_free in libmruby.a(ossl_x509req.o)
  "_X509_REQ_new", referenced from:
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
  "_X509_REQ_set_pubkey", referenced from:
      _ossl_x509req_set_public_key in libmruby.a(ossl_x509req.o)
  "_X509_REQ_set_subject_name", referenced from:
      _ossl_x509req_set_subject in libmruby.a(ossl_x509req.o)
  "_X509_REQ_set_version", referenced from:
      _ossl_x509req_set_version in libmruby.a(ossl_x509req.o)
  "_X509_REQ_sign", referenced from:
      _ossl_x509req_sign in libmruby.a(ossl_x509req.o)
  "_X509_free", referenced from:
      _ossl_x509_free in libmruby.a(ossl_x509cert.o)
  "_X509_new", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
  "_d2i_RSAPrivateKey_bio", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_d2i_RSAPublicKey_bio", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_d2i_RSA_PUBKEY_bio", referenced from:
      _mrb_ossl_pkey_rsa_init in libmruby.a(ossl_pkey_rsa.o)
  "_d2i_X509_ATTRIBUTE", referenced from:
      _ossl_x509attr_initialize in libmruby.a(ossl_x509attr.o)
  "_d2i_X509_NAME", referenced from:
      _ossl_x509name_initialize in libmruby.a(ossl_x509name.o)
  "_d2i_X509_REQ_bio", referenced from:
      _ossl_x509req_initialize in libmruby.a(ossl_x509req.o)
  "_d2i_X509_bio", referenced from:
      _ossl_x509_initialize in libmruby.a(ossl_x509cert.o)
  "_i2d_ASN1_TYPE", referenced from:
      _ossl_asn1prim_to_der in libmruby.a(ossl_asn1.o)
  "_i2d_X509_EXTENSION", referenced from:
      _ossl_x509ext_to_der in libmruby.a(ossl_x509ext.o)
  "_i2d_X509_REQ", referenced from:
      _ossl_x509req_to_der in libmruby.a(ossl_x509req.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
rake aborted!

[yyamano]

@Zogoo Could you try to build with LDFLAGS=-v as below? You can see options passed to the linker.

% env LDFLAGS=-v ./build.sh