How to fix C++ error "undefined reference to `MD5_Update'"

Problem:

When compiling your C++ application, you see one or more of the following or similar error messages (complete error message log example shown below)

/usr/bin/ld: md5.c:(.text+0x44): undefined reference to `MD5_Update'
/usr/bin/ld: md5.c:(.text+0x4f): undefined reference to `MD5_Final'
sha256.c:(.text+0x32): undefined reference to `SHA256_Init'
/usr/bin/ld: sha256.c:(.text+0x47): undefined reference to `SHA256_Update'
/usr/bin/ld: sha256.c:(.text+0x52): undefined reference to `SHA256_Final

Solution

You need to link OpenSSL to your executable - the libraries that need to be linked are called crypto (libcrypto.so) and ssl (libssl.so). When running gcc manually, use the -lcrypto and -lssl options, for example:

gcc -o myexe main.cpp -lcrypto -lssl

When using CMake, use

add_executable(myexe main.cpp)
target_link_libraries(myexe crypto ssl)

Full error log example:

/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o): in function `Curl_md5it':
md5.c:(.text+0x2f): undefined reference to `MD5_Init'
/usr/bin/ld: md5.c:(.text+0x44): undefined reference to `MD5_Update'
/usr/bin/ld: md5.c:(.text+0x4f): undefined reference to `MD5_Final'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o):(.data.rel.ro+0x0): undefined reference to `MD5_Init'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o):(.data.rel.ro+0x8): undefined reference to `MD5_Update'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o):(.data.rel.ro+0x10): undefined reference to `MD5_Final'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o):(.data.rel.ro+0x20): undefined reference to `MD5_Init'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o):(.data.rel.ro+0x28): undefined reference to `MD5_Update'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md5.o):(.data.rel.ro+0x30): undefined reference to `MD5_Final'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-sha256.o): in function `Curl_sha256it':
sha256.c:(.text+0x32): undefined reference to `SHA256_Init'
/usr/bin/ld: sha256.c:(.text+0x47): undefined reference to `SHA256_Update'
/usr/bin/ld: sha256.c:(.text+0x52): undefined reference to `SHA256_Final'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_sha256sum':
openssl.c:(.text+0x61): undefined reference to `EVP_MD_CTX_new'
/usr/bin/ld: openssl.c:(.text+0x69): undefined reference to `EVP_sha256'
/usr/bin/ld: openssl.c:(.text+0x76): undefined reference to `EVP_DigestInit_ex'
/usr/bin/ld: openssl.c:(.text+0x84): undefined reference to `EVP_DigestUpdate'
/usr/bin/ld: openssl.c:(.text+0x94): undefined reference to `EVP_DigestFinal_ex'
/usr/bin/ld: openssl.c:(.text+0x9c): undefined reference to `EVP_MD_CTX_free'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_md5sum':
openssl.c:(.text+0x101): undefined reference to `EVP_MD_CTX_new'
/usr/bin/ld: openssl.c:(.text+0x109): undefined reference to `EVP_md5'
/usr/bin/ld: openssl.c:(.text+0x116): undefined reference to `EVP_DigestInit_ex'
/usr/bin/ld: openssl.c:(.text+0x124): undefined reference to `EVP_DigestUpdate'
/usr/bin/ld: openssl.c:(.text+0x134): undefined reference to `EVP_DigestFinal_ex'
/usr/bin/ld: openssl.c:(.text+0x13c): undefined reference to `EVP_MD_CTX_free'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_engines_list':
openssl.c:(.text+0x17a): undefined reference to `ENGINE_get_first'
/usr/bin/ld: openssl.c:(.text+0x194): undefined reference to `ENGINE_get_next'
/usr/bin/ld: openssl.c:(.text+0x1a7): undefined reference to `ENGINE_get_id'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_close_all':
openssl.c:(.text+0x1f5): undefined reference to `ENGINE_finish'
/usr/bin/ld: openssl.c:(.text+0x201): undefined reference to `ENGINE_free'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ssl_tls_trace':
openssl.c:(.text+0x446): undefined reference to `SSL_alert_desc_string_long'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ssl_ui_writer':
openssl.c:(.text+0x645): undefined reference to `UI_get_string_type'
/usr/bin/ld: openssl.c:(.text+0x652): undefined reference to `UI_OpenSSL'
/usr/bin/ld: openssl.c:(.text+0x65a): undefined reference to `UI_method_get_writer'
/usr/bin/ld: openssl.c:(.text+0x674): undefined reference to `UI_get0_user_data'
/usr/bin/ld: openssl.c:(.text+0x681): undefined reference to `UI_get_input_flags'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ssl_ui_reader':
openssl.c:(.text+0x6b3): undefined reference to `UI_get_string_type'
/usr/bin/ld: openssl.c:(.text+0x6c0): undefined reference to `UI_OpenSSL'
/usr/bin/ld: openssl.c:(.text+0x6c8): undefined reference to `UI_method_get_reader'
/usr/bin/ld: openssl.c:(.text+0x6e4): undefined reference to `UI_get0_user_data'
/usr/bin/ld: openssl.c:(.text+0x6f4): undefined reference to `UI_get_input_flags'
/usr/bin/ld: openssl.c:(.text+0x706): undefined reference to `UI_set_result'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_data_pending':
openssl.c:(.text+0x746): undefined reference to `SSL_pending'
/usr/bin/ld: openssl.c:(.text+0x76f): undefined reference to `SSL_pending'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_version':
openssl.c:(.text+0x7a9): undefined reference to `OpenSSL_version_num'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_set_engine_default':
openssl.c:(.text+0x903): undefined reference to `ENGINE_set_default'
/usr/bin/ld: openssl.c:(.text+0x913): undefined reference to `ENGINE_get_id'
/usr/bin/ld: openssl.c:(.text+0x941): undefined reference to `ENGINE_get_id'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_seed.part.0':
openssl.c:(.text+0xbfe): undefined reference to `RAND_add'
/usr/bin/ld: openssl.c:(.text+0xc03): undefined reference to `RAND_status'
/usr/bin/ld: openssl.c:(.text+0xc1f): undefined reference to `RAND_file_name'
/usr/bin/ld: openssl.c:(.text+0xc35): undefined reference to `RAND_load_file'
/usr/bin/ld: openssl.c:(.text+0xc3a): undefined reference to `RAND_status'
/usr/bin/ld: openssl.c:(.text+0xc56): undefined reference to `RAND_status'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ossl_recv':
openssl.c:(.text+0xde7): undefined reference to `ERR_clear_error'
/usr/bin/ld: openssl.c:(.text+0xe15): undefined reference to `SSL_read'
/usr/bin/ld: openssl.c:(.text+0xe5f): undefined reference to `SSL_get_error'
/usr/bin/ld: openssl.c:(.text+0xe74): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0xfc4): undefined reference to `ERR_error_string_n'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_close':
openssl.c:(.text+0x102d): undefined reference to `SSL_shutdown'
/usr/bin/ld: openssl.c:(.text+0x103b): undefined reference to `SSL_set_connect_state'
/usr/bin/ld: openssl.c:(.text+0x1049): undefined reference to `SSL_free'
/usr/bin/ld: openssl.c:(.text+0x1063): undefined reference to `SSL_CTX_free'
/usr/bin/ld: openssl.c:(.text+0x1089): undefined reference to `SSL_shutdown'
/usr/bin/ld: openssl.c:(.text+0x1096): undefined reference to `SSL_set_connect_state'
/usr/bin/ld: openssl.c:(.text+0x10a3): undefined reference to `SSL_free'
/usr/bin/ld: openssl.c:(.text+0x10bc): undefined reference to `SSL_CTX_free'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_random':
openssl.c:(.text+0x10fb): undefined reference to `RAND_bytes'
/usr/bin/ld: openssl.c:(.text+0x111c): undefined reference to `RAND_status'
/usr/bin/ld: openssl.c:(.text+0x113f): undefined reference to `RAND_load_file'
/usr/bin/ld: openssl.c:(.text+0x1144): undefined reference to `RAND_status'
/usr/bin/ld: openssl.c:(.text+0x1161): undefined reference to `RAND_status'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ossl_new_session_cb':
openssl.c:(.text+0x11c7): undefined reference to `SSL_get_ex_data'
/usr/bin/ld: openssl.c:(.text+0x11dd): undefined reference to `SSL_get_ex_data'
/usr/bin/ld: openssl.c:(.text+0x123f): undefined reference to `CRYPTO_get_ex_new_index'
/usr/bin/ld: openssl.c:(.text+0x126f): undefined reference to `CRYPTO_get_ex_new_index'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_init':
openssl.c:(.text+0x138c): undefined reference to `OPENSSL_load_builtin_modules'
/usr/bin/ld: openssl.c:(.text+0x1391): undefined reference to `ENGINE_load_builtin_engines'
/usr/bin/ld: openssl.c:(.text+0x139f): undefined reference to `CONF_modules_load_file'
/usr/bin/ld: openssl.c:(.text+0x13e7): undefined reference to `CRYPTO_get_ex_new_index'
/usr/bin/ld: openssl.c:(.text+0x1487): undefined reference to `CRYPTO_get_ex_new_index'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_set_engine':
openssl.c:(.text+0x14cf): undefined reference to `ENGINE_by_id'
/usr/bin/ld: openssl.c:(.text+0x14ec): undefined reference to `ENGINE_finish'
/usr/bin/ld: openssl.c:(.text+0x14f8): undefined reference to `ENGINE_free'
/usr/bin/ld: openssl.c:(.text+0x150b): undefined reference to `ENGINE_init'
/usr/bin/ld: openssl.c:(.text+0x154f): undefined reference to `ENGINE_free'
/usr/bin/ld: openssl.c:(.text+0x1554): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x156b): undefined reference to `ERR_error_string_n'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_shutdown':
openssl.c:(.text+0x16b8): undefined reference to `SSL_free'
/usr/bin/ld: openssl.c:(.text+0x1701): undefined reference to `ERR_clear_error'
/usr/bin/ld: openssl.c:(.text+0x171e): undefined reference to `SSL_read'
/usr/bin/ld: openssl.c:(.text+0x1730): undefined reference to `SSL_get_error'
/usr/bin/ld: openssl.c:(.text+0x177b): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x1831): undefined reference to `SSL_get_shutdown'
/usr/bin/ld: openssl.c:(.text+0x1861): undefined reference to `SSL_shutdown'
/usr/bin/ld: openssl.c:(.text+0x1895): undefined reference to `ERR_error_string_n'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ossl_connect_step2':
openssl.c:(.text+0x1a13): undefined reference to `ERR_clear_error'
/usr/bin/ld: openssl.c:(.text+0x1a2c): undefined reference to `SSL_connect'
/usr/bin/ld: openssl.c:(.text+0x1a47): undefined reference to `SSL_get_error'
/usr/bin/ld: openssl.c:(.text+0x1af2): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x1b24): undefined reference to `SSL_get_verify_result'
/usr/bin/ld: openssl.c:(.text+0x1b44): undefined reference to `X509_verify_cert_error_string'
/usr/bin/ld: openssl.c:(.text+0x1bf7): undefined reference to `SSL_get_current_cipher'
/usr/bin/ld: openssl.c:(.text+0x1bff): undefined reference to `SSL_CIPHER_get_name'
/usr/bin/ld: openssl.c:(.text+0x1c1e): undefined reference to `SSL_version'
/usr/bin/ld: openssl.c:(.text+0x1c96): undefined reference to `SSL_get0_alpn_selected'
/usr/bin/ld: openssl.c:(.text+0x1d2e): undefined reference to `ERR_error_string_n'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ossl_send':
openssl.c:(.text+0x1fe6): undefined reference to `ERR_clear_error'
/usr/bin/ld: openssl.c:(.text+0x2015): undefined reference to `SSL_write'
/usr/bin/ld: openssl.c:(.text+0x205e): undefined reference to `SSL_get_error'
/usr/bin/ld: openssl.c:(.text+0x2080): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x20ff): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x219b): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x2213): undefined reference to `ERR_error_string_n'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `servercert':
openssl.c:(.text+0x249b): undefined reference to `BIO_s_mem'
/usr/bin/ld: openssl.c:(.text+0x24a3): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x24cc): undefined reference to `SSL_get_peer_certificate'
/usr/bin/ld: openssl.c:(.text+0x2541): undefined reference to `X509_get_subject_name'
/usr/bin/ld: openssl.c:(.text+0x2549): undefined reference to `BIO_s_mem'
/usr/bin/ld: openssl.c:(.text+0x2551): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x2576): undefined reference to `X509_NAME_print_ex'
/usr/bin/ld: openssl.c:(.text+0x2596): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x25d6): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x2614): undefined reference to `X509_get0_notBefore'
/usr/bin/ld: openssl.c:(.text+0x2624): undefined reference to `ASN1_TIME_print'
/usr/bin/ld: openssl.c:(.text+0x2636): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2663): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2670): undefined reference to `X509_get0_notAfter'
/usr/bin/ld: openssl.c:(.text+0x267b): undefined reference to `ASN1_TIME_print'
/usr/bin/ld: openssl.c:(.text+0x268d): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x26ba): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x26c2): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x2786): undefined reference to `X509_get_ext_d2i'
/usr/bin/ld: openssl.c:(.text+0x279a): undefined reference to `OPENSSL_sk_num'
/usr/bin/ld: openssl.c:(.text+0x27ef): undefined reference to `OPENSSL_sk_value'
/usr/bin/ld: openssl.c:(.text+0x281c): undefined reference to `GENERAL_NAMES_free'
/usr/bin/ld: openssl.c:(.text+0x283c): undefined reference to `X509_get_issuer_name'
/usr/bin/ld: openssl.c:(.text+0x2844): undefined reference to `BIO_s_mem'
/usr/bin/ld: openssl.c:(.text+0x284c): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x286a): undefined reference to `X509_NAME_print_ex'
/usr/bin/ld: openssl.c:(.text+0x2888): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x28c7): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x2913): undefined reference to `BIO_s_file'
/usr/bin/ld: openssl.c:(.text+0x291b): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x2956): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x296c): undefined reference to `PEM_read_bio_X509'
/usr/bin/ld: openssl.c:(.text+0x298d): undefined reference to `X509_check_issued'
/usr/bin/ld: openssl.c:(.text+0x29cb): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x29d3): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x29e5): undefined reference to `SSL_get_verify_result'
/usr/bin/ld: openssl.c:(.text+0x2a3b): undefined reference to `X509_verify_cert_error_string'
/usr/bin/ld: openssl.c:(.text+0x2b08): undefined reference to `X509_get_X509_PUBKEY'
/usr/bin/ld: openssl.c:(.text+0x2b12): undefined reference to `i2d_X509_PUBKEY'
/usr/bin/ld: openssl.c:(.text+0x2b3f): undefined reference to `X509_get_X509_PUBKEY'
/usr/bin/ld: openssl.c:(.text+0x2b4f): undefined reference to `i2d_X509_PUBKEY'
/usr/bin/ld: openssl.c:(.text+0x2b94): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x2c2d): undefined reference to `SSL_get_peer_cert_chain'
/usr/bin/ld: openssl.c:(.text+0x2c43): undefined reference to `OPENSSL_sk_num'
/usr/bin/ld: openssl.c:(.text+0x2c60): undefined reference to `BIO_s_mem'
/usr/bin/ld: openssl.c:(.text+0x2c68): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x2cb8): undefined reference to `OPENSSL_sk_value'
/usr/bin/ld: openssl.c:(.text+0x2ccf): undefined reference to `X509_get_subject_name'
/usr/bin/ld: openssl.c:(.text+0x2ce1): undefined reference to `X509_NAME_print_ex'
/usr/bin/ld: openssl.c:(.text+0x2cf8): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2d22): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2d2a): undefined reference to `X509_get_issuer_name'
/usr/bin/ld: openssl.c:(.text+0x2d3c): undefined reference to `X509_NAME_print_ex'
/usr/bin/ld: openssl.c:(.text+0x2d4e): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2d78): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2d80): undefined reference to `X509_get_version'
/usr/bin/ld: openssl.c:(.text+0x2d94): undefined reference to `BIO_printf'
/usr/bin/ld: openssl.c:(.text+0x2da6): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2dd0): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2dd8): undefined reference to `X509_get_serialNumber'
/usr/bin/ld: openssl.c:(.text+0x2e1a): undefined reference to `BIO_printf'
/usr/bin/ld: openssl.c:(.text+0x2e34): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2e5e): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2e88): undefined reference to `X509_get0_signature'
/usr/bin/ld: openssl.c:(.text+0x2ea0): undefined reference to `i2a_ASN1_OBJECT'
/usr/bin/ld: openssl.c:(.text+0x2eb4): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2ede): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2ee6): undefined reference to `X509_get_X509_PUBKEY'
/usr/bin/ld: openssl.c:(.text+0x2f01): undefined reference to `X509_PUBKEY_get0_param'
/usr/bin/ld: openssl.c:(.text+0x2f16): undefined reference to `i2a_ASN1_OBJECT'
/usr/bin/ld: openssl.c:(.text+0x2f2a): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2f54): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2f5c): undefined reference to `X509_get0_extensions'
/usr/bin/ld: openssl.c:(.text+0x2f67): undefined reference to `OPENSSL_sk_num'
/usr/bin/ld: openssl.c:(.text+0x2f9e): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x2fc4): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x2fcc): undefined reference to `OPENSSL_sk_num'
/usr/bin/ld: openssl.c:(.text+0x2fde): undefined reference to `OPENSSL_sk_value'
/usr/bin/ld: openssl.c:(.text+0x2fe6): undefined reference to `BIO_s_mem'
/usr/bin/ld: openssl.c:(.text+0x2fee): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x3002): undefined reference to `X509_EXTENSION_get_object'
/usr/bin/ld: openssl.c:(.text+0x3014): undefined reference to `i2t_ASN1_OBJECT'
/usr/bin/ld: openssl.c:(.text+0x3023): undefined reference to `X509V3_EXT_print'
/usr/bin/ld: openssl.c:(.text+0x3033): undefined reference to `X509_EXTENSION_get_data'
/usr/bin/ld: openssl.c:(.text+0x303e): undefined reference to `ASN1_STRING_print'
/usr/bin/ld: openssl.c:(.text+0x3125): undefined reference to `SSL_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3150): undefined reference to `d2i_OCSP_RESPONSE'
/usr/bin/ld: openssl.c:(.text+0x3164): undefined reference to `OCSP_response_status'
/usr/bin/ld: openssl.c:(.text+0x3177): undefined reference to `OCSP_response_get1_basic'
/usr/bin/ld: openssl.c:(.text+0x3195): undefined reference to `SSL_get_peer_cert_chain'
/usr/bin/ld: openssl.c:(.text+0x31a4): undefined reference to `SSL_CTX_get_cert_store'
/usr/bin/ld: openssl.c:(.text+0x31bc): undefined reference to `OCSP_basic_verify'
/usr/bin/ld: openssl.c:(.text+0x31cc): undefined reference to `OCSP_resp_count'
/usr/bin/ld: openssl.c:(.text+0x31e0): undefined reference to `OCSP_resp_get0'
/usr/bin/ld: openssl.c:(.text+0x3209): undefined reference to `OCSP_single_get0_status'
/usr/bin/ld: openssl.c:(.text+0x322c): undefined reference to `OCSP_check_validity'
/usr/bin/ld: openssl.c:(.text+0x323c): undefined reference to `OCSP_cert_status_str'
/usr/bin/ld: openssl.c:(.text+0x326c): undefined reference to `OCSP_BASICRESP_free'
/usr/bin/ld: openssl.c:(.text+0x3274): undefined reference to `OCSP_RESPONSE_free'
/usr/bin/ld: openssl.c:(.text+0x328c): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x3386): undefined reference to `X509_get0_notBefore'
/usr/bin/ld: openssl.c:(.text+0x3391): undefined reference to `ASN1_TIME_print'
/usr/bin/ld: openssl.c:(.text+0x33a8): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x33d2): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x33da): undefined reference to `X509_get0_notAfter'
/usr/bin/ld: openssl.c:(.text+0x33e5): undefined reference to `ASN1_TIME_print'
/usr/bin/ld: openssl.c:(.text+0x33f7): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3421): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3429): undefined reference to `X509_get_pubkey'
/usr/bin/ld: openssl.c:(.text+0x343d): undefined reference to `EVP_PKEY_id'
/usr/bin/ld: openssl.c:(.text+0x3460): undefined reference to `EVP_PKEY_free'
/usr/bin/ld: openssl.c:(.text+0x3478): undefined reference to `PEM_write_bio_X509'
/usr/bin/ld: openssl.c:(.text+0x348c): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x34b9): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x34cb): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x3502): undefined reference to `BIO_printf'
/usr/bin/ld: openssl.c:(.text+0x3523): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x354d): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x359b): undefined reference to `BIO_puts'
/usr/bin/ld: openssl.c:(.text+0x35ac): undefined reference to `GENERAL_NAMES_free'
/usr/bin/ld: openssl.c:(.text+0x35c3): undefined reference to `X509_get_subject_name'
/usr/bin/ld: openssl.c:(.text+0x35e5): undefined reference to `X509_NAME_get_index_by_NID'
/usr/bin/ld: openssl.c:(.text+0x365e): undefined reference to `CRYPTO_free'
/usr/bin/ld: openssl.c:(.text+0x3674): undefined reference to `EVP_PKEY_get0_DSA'
/usr/bin/ld: openssl.c:(.text+0x3694): undefined reference to `DSA_get0_pqg'
/usr/bin/ld: openssl.c:(.text+0x36a6): undefined reference to `DSA_get0_key'
/usr/bin/ld: openssl.c:(.text+0x36e4): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x36fe): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3729): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3771): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x3783): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x37ae): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x37f6): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x3808): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3833): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x387b): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x388d): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x38b8): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x38cc): undefined reference to `EVP_PKEY_get0_RSA'
/usr/bin/ld: openssl.c:(.text+0x38e3): undefined reference to `RSA_get0_key'
/usr/bin/ld: openssl.c:(.text+0x38f0): undefined reference to `BN_num_bits'
/usr/bin/ld: openssl.c:(.text+0x3903): undefined reference to `BIO_printf'
/usr/bin/ld: openssl.c:(.text+0x3917): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3941): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x397f): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x3999): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x39c4): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x39f4): undefined reference to `EVP_PKEY_get0_DH'
/usr/bin/ld: openssl.c:(.text+0x3a14): undefined reference to `DH_get0_pqg'
/usr/bin/ld: openssl.c:(.text+0x3a26): undefined reference to `DH_get0_key'
/usr/bin/ld: openssl.c:(.text+0x3a64): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x3a7e): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3aa9): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3af1): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x3b03): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3b2e): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3b76): undefined reference to `BN_print'
/usr/bin/ld: openssl.c:(.text+0x3b88): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3bb3): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x3be9): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x3c45): undefined reference to `ASN1_STRING_get0_data'
/usr/bin/ld: openssl.c:(.text+0x3c4e): undefined reference to `ASN1_STRING_length'
/usr/bin/ld: openssl.c:(.text+0x3c65): undefined reference to `ASN1_STRING_get0_data'
/usr/bin/ld: openssl.c:(.text+0x3c71): undefined reference to `ASN1_STRING_length'
/usr/bin/ld: openssl.c:(.text+0x3cbd): undefined reference to `GENERAL_NAMES_free'
/usr/bin/ld: openssl.c:(.text+0x3cd5): undefined reference to `ASN1_STRING_get0_data'
/usr/bin/ld: openssl.c:(.text+0x3ce1): undefined reference to `ASN1_STRING_length'
/usr/bin/ld: openssl.c:(.text+0x3d99): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x3de3): undefined reference to `OCSP_BASICRESP_free'
/usr/bin/ld: openssl.c:(.text+0x3deb): undefined reference to `OCSP_RESPONSE_free'
/usr/bin/ld: openssl.c:(.text+0x3e41): undefined reference to `OCSP_crl_reason_str'
/usr/bin/ld: openssl.c:(.text+0x3e95): undefined reference to `OCSP_RESPONSE_free'
/usr/bin/ld: openssl.c:(.text+0x3f5e): undefined reference to `X509_NAME_get_entry'
/usr/bin/ld: openssl.c:(.text+0x3f66): undefined reference to `X509_NAME_ENTRY_get_data'
/usr/bin/ld: openssl.c:(.text+0x3f7a): undefined reference to `ASN1_STRING_type'
/usr/bin/ld: openssl.c:(.text+0x3f93): undefined reference to `ASN1_STRING_to_UTF8'
/usr/bin/ld: openssl.c:(.text+0x3ff7): undefined reference to `X509_verify_cert_error_string'
/usr/bin/ld: openssl.c:(.text+0x402c): undefined reference to `OCSP_response_status_str'
/usr/bin/ld: openssl.c:(.text+0x40a9): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x40c1): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x4119): undefined reference to `CRYPTO_free'
/usr/bin/ld: openssl.c:(.text+0x4169): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x4170): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x4209): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x422d): undefined reference to `OCSP_BASICRESP_free'
/usr/bin/ld: openssl.c:(.text+0x4235): undefined reference to `OCSP_RESPONSE_free'
/usr/bin/ld: openssl.c:(.text+0x4242): undefined reference to `ASN1_STRING_length'
/usr/bin/ld: openssl.c:(.text+0x4264): undefined reference to `CRYPTO_malloc'
/usr/bin/ld: openssl.c:(.text+0x4280): undefined reference to `ASN1_STRING_get0_data'
/usr/bin/ld: openssl.c:(.text+0x42a9): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x42cc): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x432e): undefined reference to `X509_free'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `ossl_connect_step1':
openssl.c:(.text+0x4543): undefined reference to `TLS_client_method'
/usr/bin/ld: openssl.c:(.text+0x4567): undefined reference to `SSL_CTX_free'
/usr/bin/ld: openssl.c:(.text+0x4580): undefined reference to `SSL_CTX_new'
/usr/bin/ld: openssl.c:(.text+0x45b4): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x465a): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x46be): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x46e1): undefined reference to `SSL_CTX_set_options'
/usr/bin/ld: openssl.c:(.text+0x4802): undefined reference to `SSL_CTX_set_default_passwd_cb_userdata'
/usr/bin/ld: openssl.c:(.text+0x4811): undefined reference to `SSL_CTX_set_default_passwd_cb'
/usr/bin/ld: openssl.c:(.text+0x4846): undefined reference to `BIO_s_file'
/usr/bin/ld: openssl.c:(.text+0x484e): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x4871): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x4883): undefined reference to `d2i_PKCS12_bio'
/usr/bin/ld: openssl.c:(.text+0x488e): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x489c): undefined reference to `PKCS12_PBE_add'
/usr/bin/ld: openssl.c:(.text+0x48bb): undefined reference to `PKCS12_parse'
/usr/bin/ld: openssl.c:(.text+0x48cb): undefined reference to `PKCS12_free'
/usr/bin/ld: openssl.c:(.text+0x48da): undefined reference to `SSL_CTX_use_certificate'
/usr/bin/ld: openssl.c:(.text+0x48e8): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x490b): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x495f): undefined reference to `EVP_PKEY_free'
/usr/bin/ld: openssl.c:(.text+0x4969): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x4970): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x497d): undefined reference to `OPENSSL_sk_pop_free'
/usr/bin/ld: openssl.c:(.text+0x4991): undefined reference to `RAND_status'
/usr/bin/ld: openssl.c:(.text+0x49b8): undefined reference to `RAND_load_file'
/usr/bin/ld: openssl.c:(.text+0x49bd): undefined reference to `RAND_status'
/usr/bin/ld: openssl.c:(.text+0x4b4b): undefined reference to `EVP_PKEY_get1_RSA'
/usr/bin/ld: openssl.c:(.text+0x4b58): undefined reference to `RSA_flags'
/usr/bin/ld: openssl.c:(.text+0x4b64): undefined reference to `RSA_free'
/usr/bin/ld: openssl.c:(.text+0x4b6c): undefined reference to `SSL_free'
/usr/bin/ld: openssl.c:(.text+0x4baf): undefined reference to `SSL_CTX_set_cipher_list'
/usr/bin/ld: openssl.c:(.text+0x4bff): undefined reference to `SSL_CTX_set_ciphersuites'
/usr/bin/ld: openssl.c:(.text+0x4c2f): undefined reference to `SSL_CTX_set_post_handshake_auth'
/usr/bin/ld: openssl.c:(.text+0x4c5b): undefined reference to `X509_LOOKUP_file'
/usr/bin/ld: openssl.c:(.text+0x4c75): undefined reference to `SSL_CTX_get_cert_store'
/usr/bin/ld: openssl.c:(.text+0x4c80): undefined reference to `X509_STORE_add_lookup'
/usr/bin/ld: openssl.c:(.text+0x4c9e): undefined reference to `X509_load_crl_file'
/usr/bin/ld: openssl.c:(.text+0x4cc6): undefined reference to `SSL_CTX_get_cert_store'
/usr/bin/ld: openssl.c:(.text+0x4cd3): undefined reference to `X509_STORE_set_flags'
/usr/bin/ld: openssl.c:(.text+0x4d30): undefined reference to `SSL_CTX_set_verify'
/usr/bin/ld: openssl.c:(.text+0x4d55): undefined reference to `SSL_CTX_set_keylog_callback'
/usr/bin/ld: openssl.c:(.text+0x4d78): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x4d8e): undefined reference to `SSL_CTX_sess_set_new_cb'
/usr/bin/ld: openssl.c:(.text+0x4df9): undefined reference to `SSL_free'
/usr/bin/ld: openssl.c:(.text+0x4e09): undefined reference to `SSL_new'
/usr/bin/ld: openssl.c:(.text+0x4e4f): undefined reference to `SSL_set_connect_state'
/usr/bin/ld: openssl.c:(.text+0x4ec6): undefined reference to `BIO_f_ssl'
/usr/bin/ld: openssl.c:(.text+0x4ece): undefined reference to `BIO_new'
/usr/bin/ld: openssl.c:(.text+0x4eeb): undefined reference to `BIO_ctrl'
/usr/bin/ld: openssl.c:(.text+0x4f01): undefined reference to `SSL_set_bio'
/usr/bin/ld: openssl.c:(.text+0x4f42): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x4f62): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x4fa0): undefined reference to `SSL_CTX_set_msg_callback'
/usr/bin/ld: openssl.c:(.text+0x4fb9): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x5022): undefined reference to `SSL_CTX_set_alpn_protos'
/usr/bin/ld: openssl.c:(.text+0x5045): undefined reference to `SSL_CTX_set_next_proto_select_cb'
/usr/bin/ld: openssl.c:(.text+0x50c5): undefined reference to `SSL_CTX_use_certificate_chain_file'
/usr/bin/ld: openssl.c:(.text+0x5108): undefined reference to `SSL_CTX_use_PrivateKey_file'
/usr/bin/ld: openssl.c:(.text+0x511b): undefined reference to `SSL_new'
/usr/bin/ld: openssl.c:(.text+0x512f): undefined reference to `SSL_get_certificate'
/usr/bin/ld: openssl.c:(.text+0x5141): undefined reference to `X509_get_pubkey'
/usr/bin/ld: openssl.c:(.text+0x514c): undefined reference to `SSL_get_privatekey'
/usr/bin/ld: openssl.c:(.text+0x5157): undefined reference to `EVP_PKEY_copy_parameters'
/usr/bin/ld: openssl.c:(.text+0x515f): undefined reference to `EVP_PKEY_free'
/usr/bin/ld: openssl.c:(.text+0x5167): undefined reference to `SSL_get_privatekey'
/usr/bin/ld: openssl.c:(.text+0x5172): undefined reference to `EVP_PKEY_id'
/usr/bin/ld: openssl.c:(.text+0x5183): undefined reference to `SSL_free'
/usr/bin/ld: openssl.c:(.text+0x518d): undefined reference to `SSL_CTX_check_private_key'
/usr/bin/ld: openssl.c:(.text+0x51ec): undefined reference to `SSL_CTX_set_srp_username'
/usr/bin/ld: openssl.c:(.text+0x521d): undefined reference to `SSL_CTX_set_srp_password'
/usr/bin/ld: openssl.c:(.text+0x5272): undefined reference to `SSL_CTX_set_cipher_list'
/usr/bin/ld: openssl.c:(.text+0x52ba): undefined reference to `SSL_CTX_load_verify_locations'
/usr/bin/ld: openssl.c:(.text+0x5331): undefined reference to `ERR_peek_error'
/usr/bin/ld: openssl.c:(.text+0x5354): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x53c0): undefined reference to `SSL_set_fd'
/usr/bin/ld: openssl.c:(.text+0x53cd): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x53f0): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x55b9): undefined reference to `CRYPTO_get_ex_new_index'
/usr/bin/ld: openssl.c:(.text+0x560d): undefined reference to `SSL_set_session'
/usr/bin/ld: openssl.c:(.text+0x5672): undefined reference to `SSL_ctrl'
/usr/bin/ld: openssl.c:(.text+0x56a5): undefined reference to `SSL_ctrl'
/usr/bin/ld: openssl.c:(.text+0x5793): undefined reference to `SSL_CTX_get_cert_store'
/usr/bin/ld: openssl.c:(.text+0x57a0): undefined reference to `X509_STORE_set_flags'
/usr/bin/ld: openssl.c:(.text+0x586d): undefined reference to `SSL_CTX_set_default_passwd_cb_userdata'
/usr/bin/ld: openssl.c:(.text+0x587c): undefined reference to `SSL_CTX_set_default_passwd_cb'
/usr/bin/ld: openssl.c:(.text+0x58c0): undefined reference to `ENGINE_ctrl'
/usr/bin/ld: openssl.c:(.text+0x58f3): undefined reference to `ENGINE_ctrl_cmd'
/usr/bin/ld: openssl.c:(.text+0x5916): undefined reference to `SSL_CTX_use_certificate'
/usr/bin/ld: openssl.c:(.text+0x593f): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x5958): undefined reference to `SSL_CTX_use_certificate_file'
/usr/bin/ld: openssl.c:(.text+0x5966): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x5989): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x5a70): undefined reference to `SSL_set_ex_data'
/usr/bin/ld: openssl.c:(.text+0x5a90): undefined reference to `SSL_set_ex_data'
/usr/bin/ld: openssl.c:(.text+0x5ab3): undefined reference to `CRYPTO_get_ex_new_index'
/usr/bin/ld: openssl.c:(.text+0x5bc6): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x5be9): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x5cc6): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x5ce1): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x5d5f): undefined reference to `SSL_CTX_use_PrivateKey_file'
/usr/bin/ld: openssl.c:(.text+0x5dc3): undefined reference to `BIO_free'
/usr/bin/ld: openssl.c:(.text+0x5dcd): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x5df0): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x5e4c): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x5e77): undefined reference to `UI_create_method'
/usr/bin/ld: openssl.c:(.text+0x5e88): undefined reference to `UI_OpenSSL'
/usr/bin/ld: openssl.c:(.text+0x5e90): undefined reference to `UI_method_get_opener'
/usr/bin/ld: openssl.c:(.text+0x5e9b): undefined reference to `UI_method_set_opener'
/usr/bin/ld: openssl.c:(.text+0x5ea0): undefined reference to `UI_OpenSSL'
/usr/bin/ld: openssl.c:(.text+0x5ea8): undefined reference to `UI_method_get_closer'
/usr/bin/ld: openssl.c:(.text+0x5eb3): undefined reference to `UI_method_set_closer'
/usr/bin/ld: openssl.c:(.text+0x5ec2): undefined reference to `UI_method_set_reader'
/usr/bin/ld: openssl.c:(.text+0x5ed1): undefined reference to `UI_method_set_writer'
/usr/bin/ld: openssl.c:(.text+0x5eef): undefined reference to `ENGINE_load_private_key'
/usr/bin/ld: openssl.c:(.text+0x5efa): undefined reference to `UI_destroy_method'
/usr/bin/ld: openssl.c:(.text+0x5f10): undefined reference to `SSL_CTX_use_PrivateKey'
/usr/bin/ld: openssl.c:(.text+0x5f34): undefined reference to `EVP_PKEY_free'
/usr/bin/ld: openssl.c:(.text+0x5f3e): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x5f61): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x5fb3): undefined reference to `PKCS12_free'
/usr/bin/ld: openssl.c:(.text+0x5fc7): undefined reference to `SSL_CTX_use_PrivateKey'
/usr/bin/ld: openssl.c:(.text+0x600c): undefined reference to `ERR_get_error'
/usr/bin/ld: openssl.c:(.text+0x602f): undefined reference to `ERR_error_string_n'
/usr/bin/ld: openssl.c:(.text+0x60c2): undefined reference to `SSL_CTX_check_private_key'
/usr/bin/ld: openssl.c:(.text+0x60f0): undefined reference to `OPENSSL_sk_pop'
/usr/bin/ld: openssl.c:(.text+0x60fe): undefined reference to `SSL_CTX_add_client_CA'
/usr/bin/ld: openssl.c:(.text+0x6118): undefined reference to `SSL_CTX_ctrl'
/usr/bin/ld: openssl.c:(.text+0x612e): undefined reference to `OPENSSL_sk_num'
/usr/bin/ld: openssl.c:(.text+0x6143): undefined reference to `EVP_PKEY_free'
/usr/bin/ld: openssl.c:(.text+0x614d): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x6154): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x6161): undefined reference to `OPENSSL_sk_pop_free'
/usr/bin/ld: openssl.c:(.text+0x61af): undefined reference to `EVP_PKEY_free'
/usr/bin/ld: openssl.c:(.text+0x628c): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x62ac): undefined reference to `X509_free'
/usr/bin/ld: openssl.c:(.text+0x62d8): undefined reference to `SSL_CTX_use_PrivateKey_file'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-openssl.o): in function `Curl_ossl_session_free':
openssl.c:(.text+0x225): undefined reference to `SSL_SESSION_free'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-curl_ntlm_core.o): in function `setup_des_key':
curl_ntlm_core.c:(.text+0x98): undefined reference to `DES_set_odd_parity'
/usr/bin/ld: curl_ntlm_core.c:(.text+0xa3): undefined reference to `DES_set_key'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-curl_ntlm_core.o): in function `Curl_ntlm_core_lm_resp':
curl_ntlm_core.c:(.text+0x117): undefined reference to `DES_ecb_encrypt'
/usr/bin/ld: curl_ntlm_core.c:(.text+0x137): undefined reference to `DES_ecb_encrypt'
/usr/bin/ld: curl_ntlm_core.c:(.text+0x157): undefined reference to `DES_ecb_encrypt'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-curl_ntlm_core.o): in function `Curl_ntlm_core_mk_lm_hash':
curl_ntlm_core.c:(.text+0x23c): undefined reference to `DES_ecb_encrypt'
/usr/bin/ld: curl_ntlm_core.c:(.text+0x264): undefined reference to `DES_ecb_encrypt'
/usr/bin/ld: /home/uli/.conan/data/libcurl/7.69.1/_/_/package/d66c87f35a2a176e10af56a7f32a51d6e7b43e26/lib/libcurl.a(libcurl_la-md4.o): in function `Curl_md4it':
md4.c:(.text+0x2f): undefined reference to `MD4_Init'
/usr/bin/ld: md4.c:(.text+0x44): undefined reference to `MD4_Update'
/usr/bin/ld: md4.c:(.text+0x4f): undefined reference to `MD4_Final'