Build issue about qtbitcointrader

[JulyIghor]

you are doing everything right, but you are using very old Qt version, can you use newer Qt version?

[hilbert-rozenbaum]

I think I can. All libraries where installed from default repositories.
What Qt version is recommended?

[JulyIghor]

Latest Qt is recommended, 6.2
Or Qt 5.15 at least

[nathanjcoughlin]

Currently I am using Qt5.9.8 and static compiled openssl-1.1.1k and zlib-1.2.12 in Ubuntu 20.04 Desktop.

"qmake" and "make" finished successfully. after the successful compilation, I executed the product but unexpectedly got the following "openssl" error.

qt.network.ssl: QSslSocket: cannot resolve CRYPTO_num_locks
qt.network.ssl: QSslSocket: cannot resolve CRYPTO_set_id_callback
qt.network.ssl: QSslSocket: cannot resolve CRYPTO_set_locking_callback
qt.network.ssl: QSslSocket: cannot resolve ERR_free_strings
qt.network.ssl: QSslSocket: cannot resolve EVP_CIPHER_CTX_cleanup
qt.network.ssl: QSslSocket: cannot resolve EVP_CIPHER_CTX_init
qt.network.ssl: QSslSocket: cannot resolve sk_new_null
qt.network.ssl: QSslSocket: cannot resolve sk_push
qt.network.ssl: QSslSocket: cannot resolve sk_free
qt.network.ssl: QSslSocket: cannot resolve sk_num
qt.network.ssl: QSslSocket: cannot resolve sk_pop_free
qt.network.ssl: QSslSocket: cannot resolve sk_value
qt.network.ssl: QSslSocket: cannot resolve SSL_library_init
qt.network.ssl: QSslSocket: cannot resolve SSL_load_error_strings
qt.network.ssl: QSslSocket: cannot resolve SSL_get_ex_new_index
qt.network.ssl: QSslSocket: cannot resolve SSLv3_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv23_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv3_server_method
qt.network.ssl: QSslSocket: cannot resolve SSLv23_server_method
qt.network.ssl: QSslSocket: cannot resolve X509_STORE_CTX_get_chain
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_add_all_algorithms_noconf
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_add_all_algorithms_conf
qt.network.ssl: QSslSocket: cannot resolve SSLeay
qt.network.ssl: QSslSocket: cannot resolve SSLeay_version
qt.network.ssl: QSslSocket: cannot call unresolved function SSLeay
qt.network.ssl: Incompatible version of OpenSSL
Segmentation fault (core dumped)

Then I modified the QtBitcoinTrader_Desktop.pro file for the link of the openssl 1.0.2g to the executable.
but the issue remained the same and it didn't help me.
Why could I got such error and please let me know the good solution.
Is that from the Qt or openssl version issue?

[JulyIghor]

Hello. You need to link the same openssl version that used to build specified Qt SDK build.

[nathanjcoughlin]

Thanks for your reply.
But how and where can I find that openssl version for the Qt 5.9.8?

[JulyIghor]

Thanks for your reply.
But how and where can I find that openssl version for the Qt 5.9.8?

Well, there is only choice: v1.0, v1.1, v2.0, so try other one

[nathanjcoughlin]

I am sorry but there is no v2.0 in openssl tags.

[JulyIghor]

I am sorry but there is no v2.0 in openssl tags.

Anyway your Qt version is outdated, please use 5.15+ or 6.3+
I have tested it on those.