Install QT Creator 5.6.0 on Ubuntu Mate 18.04.1

[Eric_CO]

Hi. I downloaded qt-opensource-linux-x64-5.6.0.run and ran it, and I get the following:

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 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 SSLv2_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv3_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv23_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv2_server_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 CRYPTO_num_locks
qt.network.ssl: QSslSocket: cannot call unresolved function CRYPTO_set_id_callback
qt.network.ssl: QSslSocket: cannot call unresolved function CRYPTO_set_locking_callback
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_library_init
Could not register file downloader for https protocol: QSslSocket::supportsSsl() returns false
[0] Warning: QSslSocket: cannot call unresolved function SSLv23_client_method
[1] Warning: QSslSocket: cannot call unresolved function sk_num
Segmentation fault (core dumped)

I did install build-essential libgl1-mesa-dev libyajl2 libyajl-dev openssl libssl-dev beforehand.

Any ideas?

Thanks in advance!

[SGaist]

Hi and welcome to devnet,

You likely have OpenSSL 1.1 installed. Qt 5.6 uses version 1.0.

[Eric_CO]

Hi and thank you!

You're absolutely right. I changed the /usr/lib/x86_64-linux-gnu/libssl.so link to point at libssl.so.1.0.0 instead of libssl.so.1.1 and it installed just fine.

Thanks!

[SGaist]

That's not a good idea to do it like that. All application using OpenSSL might start misbehaving.